public void VerifyAllEnums()
{
var acceleration = new Acceleration(1, AccelerationUnit.BaseUnit);
var angle = new Angle(1, AngleUnit.BaseUnit);
var angularAcceleration = new AngularAcceleration(1, AngularAccelerationUnit.BaseUnit);
var area = new Area(1, AreaUnit.BaseUnit);
var density = new MassDensity(1, MassDensityUnit.BaseUnit);
var electricCurrent = new ElectricCurrent(1, ElectricCurrentUnit.BaseUnit);
var electricResistance = new ElectricResistance(1, ElectricResistanceUnit.BaseUnit);
var electricVoltage = new ElectricPotential(1, ElectricPotentialUnit.BaseUnit);
var energy = new Energy(1, EnergyUnit.BaseUnit);
var force = new Force(1, ForceUnit.BaseUnit);
var frequency = new Frequency(1, FrequencyUnit.BaseUnit);
var jerk = new Jerk(1, JerkUnit.BaseUnit);
var length = new Length(1, LengthUnit.BaseUnit);
var mass = new Mass(1, MassUnit.BaseUnit);
var massFlowRate = new MassFlowRate(1, MassFlowRateUnit.BaseUnit);
var momentum = new Momentum(1, MomentumUnit.BaseUnit);
var numeric = new Numeric(1, NumericUnit.BaseUnit);
var power = new Power(1, PowerUnit.BaseUnit);
var pressure = new Pressure(1, PressureUnit.BaseUnit);
var speed = new Speed(1, SpeedUnit.BaseUnit);
var temperature = new Temperature(1, TemperatureUnit.BaseUnit);
var time = new Time(1, TimeUnit.BaseUnit);
var torque = new Torque(1, TorqueUnit.BaseUnit);
var volume = new Volume(1, VolumeUnit.BaseUnit);
var volumetricFlowRate = new VolumetricFlowRate(1, VolumetricFlowRateUnit.BaseUnit);
}
public void NumericConstructorTest1()
{
NumericTypes type = new NumericTypes(); // TODO: Initialize to an appropriate value
Nullable<int> precision = new Nullable<int>(); // TODO: Initialize to an appropriate value
Numeric target = new Numeric(type, precision);
Assert.Inconclusive("TODO: Implement code to verify target");
}
public AddDigitOperationLine(Numeric number1, Numeric number2, Numeric orderOfMagnitude)
{
this.OrderOfMagnitude = orderOfMagnitude;
var digit1 = number1.GetDigitAtMagnitude(orderOfMagnitude);
var digit2 = number2.GetDigitAtMagnitude(orderOfMagnitude);
var newDigit1 = number1.GetCompatibleNumber(digit1.Symbol);
var newDigit2 = number2.GetCompatibleNumber(digit2.Symbol);
var result = newDigit1.Clone();
result.HasAddition().Add(newDigit2);
this.Digit1 = digit1.Symbol;
this.Digit2 = digit2.Symbol;
this.ResultDigit = result.ZerothDigit.Value.Symbol;
if(result.ZerothDigit.NextNode != null)
{
this.CarryDigit = result.ZerothDigit.NextDigit().Value.Symbol;
}
}
/// <summary>
/// pads numeric format with spaces. if no format function provided, format
/// defaults to Simple
/// </summary>
/// <param name="thisNumeric"></param>
/// <param name="maxWholeNumberLength"></param>
/// <param name="maxDecimalLength"></param>
/// <returns></returns>
public static string DecimalAlignFormat(this INumeric thisNumeric,
Numeric maxWholeNumberLength,
Numeric maxDecimalLength,
Func<INumeric, string> format = null
)
{
if (thisNumeric == null)
throw new ArgumentNullException("thisNumeric");
Func<INumeric, string> actualFormat = (x) =>
{
return thisNumeric.GetSimpleFormat();
};
if (format != null)
actualFormat = format;
string val = actualFormat(thisNumeric);
Numeric eachWholeNumberLength = null;
Numeric eachDecimalLength = null;
thisNumeric.GetNumericLengths(out eachWholeNumberLength, out eachDecimalLength);
var postPadLength = maxWholeNumberLength.Clone().HasAddition();
postPadLength.Subtract(eachWholeNumberLength);
var prePadLength = maxDecimalLength.Clone().HasAddition();
prePadLength.Subtract(eachDecimalLength);
postPadLength.PerformThisManyTimes(x =>
{
val = " " + val;
});
prePadLength.PerformThisManyTimes(x =>
{
val = val + " ";
});
return val;
}
public static void TruncateToDecimalPlaces(this INumeric thisNumber,
Numeric places)
{
if (thisNumber == null)
throw new ArgumentNullException("thisNumber");
if (places == null)
throw new ArgumentNullException("places");
var currPlaces = thisNumber.GetDecimalPlaces();
if (currPlaces.IsGreaterThan(places))
{
var addy = currPlaces.HasAddition();
addy.Subtract(places);
addy.PerformThisManyTimes(x =>
{
thisNumber.DoWhileMutable(y =>
{
y.RemoveFirst();
});
});
}
}
/// <summary>
/// Gets the curve parameter for the given curve length (for length-parameterized splines).
/// </summary>
/// <param name="length">The length.</param>
/// <param name="maxNumberOfIterations">
/// The maximum number of iterations which are taken to compute the length.
/// </param>
/// <param name="tolerance">
/// The tolerance value. This method will return an approximation of the precise parameter. The
/// absolute error will be less than this tolerance.
/// </param>
/// <returns>The parameter at which the curve has the given length.</returns>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="tolerance"/> is negative or 0.
/// </exception>
/// <remarks>
/// <para>
/// This method assumes that the spline is length-parameterized; This means: The parameter of a
/// key is equal to the length of the spline at this key. If this is not the case,
/// <see cref="ParameterizeByLength"/> can be called to correct the key parameters
/// automatically.
/// </para>
/// <para>
/// Normally, the spline curve parameter is not linearly proportional to the length. Therefore,
/// if the point at a given curve length is required, this method can be used to compute the
/// curve parameter which will return the point for the given distance. The result of this
/// method can be used in <see cref="GetPoint"/>.
/// </para>
/// <para>
/// This method uses an iterative algorithm. The iterations end when the
/// <paramref name="maxNumberOfIterations"/> were performed, or when the
/// <paramref name="tolerance"/> criterion is met - whichever comes first.
/// </para>
/// </remarks>
public float GetParameterFromLength(float length, int maxNumberOfIterations, float tolerance)
{
if (tolerance <= 0)
{
throw new ArgumentOutOfRangeException("tolerance", "The tolerance must be greater than zero.");
}
int numberOfKeys = Count;
if (numberOfKeys == 0)
{
return(float.NaN);
}
// Handle CurveLoopType.Linear:
float curveStart = Items[0].Parameter;
float curveEnd = Items[numberOfKeys - 1].Parameter;
float curveLength = curveEnd - curveStart;
if (length < curveStart && PreLoop == CurveLoopType.Linear)
{
var tangent = GetTangent(curveStart);
return(curveStart - (curveStart - length) / tangent.Length);
}
if (length > curveEnd && PostLoop == CurveLoopType.Linear)
{
var tangent = GetTangent(curveEnd);
return(curveEnd + (length - curveEnd) / tangent.Length);
}
if (Numeric.IsZero(curveLength))
{
return(curveStart);
}
// Correct parameter.
float loopedLength = LoopParameter(length);
// Find key index for the parameter.
int index = GetKeyIndex(loopedLength);
if (index == numberOfKeys - 1)
{
index--; // For the last key we take the previous spline.
}
// Get spline.
var spline = GetSpline(index);
// Get relative length on the segment from length on whole curve.
float splineStart = Items[index].Parameter;
float splineEnd = Items[index + 1].Parameter;
float splineLength = (splineEnd - splineStart);
loopedLength = loopedLength - splineStart;
Debug.Assert(0 <= loopedLength && loopedLength <= splineLength);
float result = CurveHelper.GetParameter(spline, loopedLength, splineLength, maxNumberOfIterations, tolerance);
float localParameter = Items[index].Parameter + result * splineLength;
((IRecyclable)spline).Recycle();
spline = null;
// Handle looping: We return a parameter that is outside if the original length parameter is outside.
// Otherwise the returned parameter would correspond to the correct parameter on the path, but
// the total distance from the first key would wrong because some "loops" are missing.
if (length < curveStart && PreLoop != CurveLoopType.Constant)
{
int numberOfPeriods = (int)((length - curveEnd) / curveLength);
if (PreLoop == CurveLoopType.Oscillate && numberOfPeriods % 2 == -1)
{
return(curveStart + curveStart - localParameter + curveLength * (numberOfPeriods + 1)); // odd = mirrored
}
else
{
return(localParameter + numberOfPeriods * curveLength);
}
}
else if (length > curveEnd && PostLoop != CurveLoopType.Constant)
{
int numberOfPeriods = (int)((length - curveStart) / curveLength);
if (PostLoop == CurveLoopType.Oscillate && numberOfPeriods % 2 == 1)
{
return(curveEnd + curveEnd - localParameter + curveLength * (numberOfPeriods - 1)); // odd = mirrored
}
else
{
return(localParameter + numberOfPeriods * curveLength);
}
}
else
{
return(localParameter);
}
}
protected override void OnUpdateLines(int startIndex, int endIndexExclusive, double[] xPositions, double[] basePositions, double[] yPositions)
{
if (Data.Count <= 1)
{
return;
}
bool reversed = XAxis.Scale.Reversed;
bool horizontalStepLineVisible = HorizontalStepLineVisible;
bool verticalStepLineVisible = VerticalStepLineVisible;
bool filled = Filled;
var interpolation = EffectiveInterpolation;
int numberOfDataPoints = Data.Count;
// Lines are drawn from index i to i+1.
startIndex = Math.Max(0, startIndex - 1);
// For centered steps one additional data point needs to be rendered.
if (interpolation == ChartInterpolation.CenteredSteps)
{
endIndexExclusive = Math.Min(numberOfDataPoints, endIndexExclusive + 1);
}
for (int i = startIndex; i < endIndexExclusive; i++)
{
if (Numeric.IsNaN(xPositions[i]) || Numeric.IsNaN(yPositions[i]))
{
continue;
}
Point previousPoint; //, previousPointBase;
Point point, pointBase;
Point nextPoint, nextPointBase;
if (i - 1 >= 0)
{
previousPoint = new Point(xPositions[i - 1], yPositions[i - 1]);
//previousPointBase = new Point(xPositions[i - 1], basePositions[i - 1]);
}
else
{
previousPoint = new Point(double.NaN, double.NaN);
//previousPointBase = new Point(double.NaN, double.NaN);
}
point = new Point(xPositions[i], yPositions[i]);
pointBase = new Point(xPositions[i], basePositions[i]);
if (i + 1 < numberOfDataPoints)
{
nextPoint = new Point(xPositions[i + 1], yPositions[i + 1]);
nextPointBase = new Point(xPositions[i + 1], basePositions[i + 1]);
}
else
{
nextPoint = new Point(double.NaN, double.NaN);
nextPointBase = new Point(double.NaN, double.NaN);
}
var lineFigures = new PathFigureCollection();
var areaFigures = new PathFigureCollection();
// Draw lines and area from i to i+1.
if (interpolation == ChartInterpolation.Linear)
{
// Linear interpolation
if (!Numeric.IsNaN(nextPoint.X) && !Numeric.IsNaN(nextPoint.Y))
{
var lineFigure = new PathFigure {
StartPoint = point
};
lineFigure.Segments.Add(new LineSegment {
Point = nextPoint
});
lineFigures.Add(lineFigure);
if (filled && !Numeric.IsNaN(pointBase.Y) && !Numeric.IsNaN(nextPointBase.Y))
{
var areaFigure = new PathFigure {
StartPoint = point
};
areaFigure.Segments.Add(new LineSegment {
Point = nextPoint
});
areaFigure.Segments.Add(new LineSegment {
Point = nextPointBase
});
areaFigure.Segments.Add(new LineSegment {
Point = pointBase
});
areaFigures.Add(areaFigure);
}
}
}
else if (interpolation == ChartInterpolation.CenteredSteps)
{
// Centered steps
double centerBefore, centerAfter;
GetCenteredStep(previousPoint, point, nextPoint, out centerBefore, out centerAfter);
if (horizontalStepLineVisible)
{
var lineFigure = new PathFigure {
StartPoint = new Point(centerBefore, point.Y)
};
lineFigure.Segments.Add(new LineSegment {
Point = new Point(centerAfter, point.Y)
});
lineFigures.Add(lineFigure);
}
if (verticalStepLineVisible && !Numeric.IsNaN(nextPoint.X) && !Numeric.IsNaN(nextPoint.Y))
{
var lineFigure = new PathFigure {
StartPoint = new Point(centerAfter, point.Y)
};
lineFigure.Segments.Add(new LineSegment {
Point = new Point(centerAfter, nextPoint.Y)
});
lineFigures.Add(lineFigure);
}
if (filled && !Numeric.IsNaN(pointBase.Y))
{
var areaFigure = new PathFigure {
StartPoint = new Point(centerBefore, point.Y)
};
areaFigure.Segments.Add(new LineSegment {
Point = new Point(centerAfter, point.Y)
});
areaFigure.Segments.Add(new LineSegment {
Point = new Point(centerAfter, pointBase.Y)
});
areaFigure.Segments.Add(new LineSegment {
Point = new Point(centerBefore, pointBase.Y)
});
areaFigures.Add(areaFigure);
}
}
else if (interpolation == ChartInterpolation.LeftSteps && !reversed ||
interpolation == ChartInterpolation.RightSteps && reversed)
{
// LeftSteps or Reversed RightSteps
if (!Numeric.IsNaN(nextPoint.X) && !Numeric.IsNaN(nextPoint.Y))
{
if (verticalStepLineVisible)
{
var lineFigure = new PathFigure {
StartPoint = point
};
lineFigure.Segments.Add(new LineSegment {
Point = new Point(point.X, nextPoint.Y)
});
lineFigures.Add(lineFigure);
}
if (horizontalStepLineVisible)
{
var lineFigure = new PathFigure {
StartPoint = new Point(point.X, nextPoint.Y)
};
lineFigure.Segments.Add(new LineSegment {
Point = nextPoint
});
lineFigures.Add(lineFigure);
}
if (filled && !Numeric.IsNaN(nextPointBase.Y))
{
var areaFigure = new PathFigure {
StartPoint = new Point(point.X, nextPoint.Y)
};
areaFigure.Segments.Add(new LineSegment {
Point = nextPoint
});
areaFigure.Segments.Add(new LineSegment {
Point = nextPointBase
});
areaFigure.Segments.Add(new LineSegment {
Point = new Point(point.X, nextPointBase.Y)
});
areaFigures.Add(areaFigure);
}
}
}
else
{
// RightSteps or Reversed LeftSteps
if (!Numeric.IsNaN(nextPoint.X) && !Numeric.IsNaN(nextPoint.Y))
{
if (horizontalStepLineVisible)
{
var lineFigure = new PathFigure {
StartPoint = point
};
lineFigure.Segments.Add(new LineSegment {
Point = new Point(nextPoint.X, point.Y)
});
lineFigures.Add(lineFigure);
}
if (verticalStepLineVisible)
{
var lineFigure = new PathFigure {
StartPoint = new Point(nextPoint.X, point.Y)
};
lineFigure.Segments.Add(new LineSegment {
Point = nextPoint
});
lineFigures.Add(lineFigure);
}
if (filled && !Numeric.IsNaN(pointBase.Y) && !Numeric.IsNaN(nextPointBase.Y))
{
var areaFigure = new PathFigure {
StartPoint = point
};
areaFigure.Segments.Add(new LineSegment {
Point = new Point(nextPoint.X, point.Y)
});
areaFigure.Segments.Add(new LineSegment {
Point = new Point(nextPointBase.X, pointBase.Y)
});
areaFigure.Segments.Add(new LineSegment {
Point = pointBase
});
areaFigures.Add(areaFigure);
}
}
}
AddSegment(i, lineFigures, areaFigures);
}
Canvas.InvalidateMeasure();
}
protected override void OnKH()
{
switch (step)
{
case 1:
encType = resultEncType;
if (!ReferenceEquals(code, null))
{
Numeric ka = program.GetValue(code.operand1);
key = new NumericArray(ka);
length = Config.NumericBits;
if (key[0].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
if (key[0].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
if (key[0].GetUnsignedBigInteger() == 0)
{
keyH = new NumericArray(new Numeric(1, 0));
}
else
{
keyH = new NumericArray(new Numeric(0, 0));
}
// jump to round 3
step = 2;
Run();
break;
}
}
}
parallelism = key.Length;
//Console.WriteLine("KH: " + key[0]);
new HammingDistanceOnKH(party, line, this, key, keyH, length).Run();
break;
case 2:
new FastEqualZeroOnKH(party, line, this, keyH, keyH, (int)Math.Ceiling(Math.Log(length + 1, 2))).Run();
break;
case 3:
SetResult(encType, keyH.GetArray());
break;
case 4:
InvokeCaller();
break;
default:
throw new Exception();
////System.Diagnostics.Debug.Assert(le >= 2 || le == 0);
//if (le > 2)
//{
// le = (int)Math.Ceiling(Math.Log(le + 1, 2));
// new HammingDistanceOnKH(party, line, this, keyH, keyH, le).Run();
//}
//else if (le == 2)
//{
// var OROperand = new Numeric[2 * parallelism];
// for (int p = 0; p < parallelism; ++p)
// {
// OROperand[2 * p] = keyH[p] >> 1;
// OROperand[2 * p + 1] = keyH[p].ModPow(1);
// }
// le = 0;
// new OROnKH(party, line, this, new NumericArray(OROperand), keyH).Run();
//}
//else
//{
// Numeric[] kf = new Numeric[parallelism];
// for (int p = 0; p < parallelism; ++p)
// {
// kf[p] = keyH[p].ModPow(1);
// //kf[p].SetEncType(EncryptionType.XOR);
// }
// SetResult(kf);
//}
//break;
}
}
public static void test_is_almost_zero()
{
Console.WriteLine("\nTesting is_almost_zero(Matrix A) ...\n");
Numeric n = new Numeric();
List<double[]> list3 = new List<double[]>() { new double[] { 4, 2, 1 }, new double[] { 2, 9, 3 }, new double[] { 1, 3, 16 } };
Matrix A = Matrix.from_list(list3);
Matrix L = n.Cholesky(A);
Console.WriteLine("\n\tA: " + A.ToString());
Console.WriteLine("\n\tExpect True: is_almost_zero(A - L*L.t) = " + n.is_almost_zero(A - L * L.Transpose()));
}
public NumericReply ReadNumReply(Numeric numeric)
{
// TODO: Implement ReadNumReply timeout
while (ReadNumReply().Numeric != numeric) { }
return last_reply;
}
public void NumericConstructorTest2()
{
NumericTypes type = new NumericTypes(); // TODO: Initialize to an appropriate value
Numeric target = new Numeric(type);
Assert.Inconclusive("TODO: Implement code to verify target");
}
protected override void OnKH()
{
switch (step)
{
case 1:
if (!ReferenceEquals(code, null))
{
Numeric
k1 = program.GetValue(code.operand1),
k2 = program.GetValue(code.operand2);
TransformEncType(k1, k2);
}
else
{
Run();
}
break;
case 2:
parallelism = key.Length / 2;
kf = new Numeric[parallelism];
encType = resultEncType;
if (!ReferenceEquals(code, null))
{
System.Diagnostics.Debug.Assert(parallelism == 1);
Numeric.Scale(key[0], key[1]);
if (key[0].GetEncType() == EncryptionType.None && key[1].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
}
// if at least one operand is not encrypted
if (key[0].GetEncType() == EncryptionType.None || key[1].GetEncType() == EncryptionType.None)
{
kf[0] = key[0] & key[1];
// jump to round 5
step = 4;
Run();
break;
}
}
scaleBits = new byte[parallelism];
// byte[] k6 = fixedKey6;
k6 = new Numeric[parallelism];
ka = new Numeric[parallelism];
Numeric[]
kbAndEnck6ka = new Numeric[2 * parallelism],
kb = new Numeric[parallelism];
for (int p = 0; p < parallelism; ++p)
{
ka[p] = key[2 * p];
kb[p] = key[2 * p + 1];
System.Diagnostics.Debug.Assert(ka[p].GetScaleBits() == kb[p].GetScaleBits());
scaleBits[p] = ka[p].GetScaleBits();
//ka[p].ResetScalingFactor();
//kb[p].ResetScalingFactor();
k6[p] = Utility.NextUnsignedNumeric(scaleBits[p]);
Numeric
enck6ka = ka[p] ^ k6[p];
kbAndEnck6ka[2 * p] = kb[p];
kbAndEnck6ka[2 * p + 1] = enck6ka;
}
byte[] toEVH = Message.AssembleMessage(line, opType, false, k6);
party.sender.SendTo(PartyType.EVH, toEVH);
byte[] toHelper = Message.AssembleMessage(line, opType, false, kbAndEnck6ka);
party.sender.SendTo(PartyType.Helper, toHelper);
party.receiver.ReceiveFrom(PartyType.EVH, line, this, enckbXORk2b);
break;
case 3:
party.receiver.ReceiveFrom(PartyType.Helper, line, this, enck5kbXORk2AndK7);
break;
case 4:
for (int p = 0; p < parallelism; ++p)
{
Numeric
enck5kbXORk2 = enck5kbXORk2AndK7[2 * p],
k7 = enck5kbXORk2AndK7[2 * p + 1],
t2 = ka[p] & enckbXORk2b[p],
t3 = k6[p] & enck5kbXORk2;
kf[p] = k7 ^ t2 ^ t3;
//kf[p].SetScalingFactor(scalingFactor[p]);
}
Run();
break;
case 5:
SetResult(encType, kf);
break;
case 6:
InvokeCaller();
break;
default:
throw new Exception();
}
}
protected override void OnEVH()
{
switch (step)
{
case 1:
if (!ReferenceEquals(code, null))
{
Numeric
enc_ka_a = program.GetValue(code.operand1),
enc_kb_b = program.GetValue(code.operand2);
TransformEncType(enc_ka_a, enc_kb_b);
}
else
{
Run();
}
break;
case 2:
parallelism = encVal.Length / 2;
enc_kf_a_AND_b = new Numeric[parallelism];
encType = resultEncType;
if (!ReferenceEquals(code, null))
{
System.Diagnostics.Debug.Assert(parallelism == 1);
Numeric.Scale(encVal[0], encVal[1]);
// **tested**
// both operands are not encrypted
if (encVal[0].GetEncType() == EncryptionType.None && encVal[1].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
}
// if at least one operand is not encrypted
if (encVal[0].GetEncType() == EncryptionType.None || encVal[1].GetEncType() == EncryptionType.None)
{
enc_kf_a_AND_b[0] = encVal[0] & encVal[1];
// jump to round 5
step = 4;
Run();
break;
}
}
scaleBits = new byte[parallelism];
enckbxork2b = new Numeric[parallelism];
enckaa = new Numeric[parallelism];
Numeric[]
enckaaAndK2 = new Numeric[2 * parallelism],
enckbb = new Numeric[parallelism];
for (int p = 0; p < parallelism; ++p)
{
enckaa[p] = encVal[2 * p];
enckbb[p] = encVal[2 * p + 1];
System.Diagnostics.Debug.Assert(enckaa[p].GetScaleBits() == enckbb[p].GetScaleBits());
scaleBits[p] = enckaa[p].GetScaleBits();
//enckaa[p].ResetScalingFactor();
//enckbb[p].ResetScalingFactor();
Numeric
k2 = Utility.NextUnsignedNumeric(scaleBits[p]);
enckbxork2b[p] = enckbb[p] ^ k2;
enckaaAndK2[2 * p] = enckaa[p];
enckaaAndK2[2 * p + 1] = k2;
}
byte[] toKH = Message.AssembleMessage(line, opType, false, enckbxork2b),
toHelper = Message.AssembleMessage(line, opType, true, enckaaAndK2);
party.sender.SendTo(PartyType.KH, toKH);
party.sender.SendTo(PartyType.Helper, toHelper);
party.receiver.ReceiveFrom(PartyType.KH, line, this, k6);
break;
case 3:
party.receiver.ReceiveFrom(PartyType.Helper, line, this, enck7p7Andk5);
break;
case 4:
for (int p = 0; p < parallelism; ++p)
{
Numeric
t0 = enckaa[p] & enckbxork2b[p],
enck7p7 = enck7p7Andk5[2 * p],
k5 = enck7p7Andk5[2 * p + 1];
enc_kf_a_AND_b[p] = t0 ^ enck7p7 ^ (k5 & k6[p]);
//enckfab[p].SetScalingFactor(scalingFactor[p]);
}
Run();
break;
case 5:
SetResult(encType, enc_kf_a_AND_b);
break;
case 6:
InvokeCaller();
break;
default:
throw new Exception();
}
}
public void Add(Numeric.TimeDomain.Acoustic_Compact_FDTD.Node Node, int x, int y, int z, double dx, Rhino.Geometry.Point3d corner)
{
double dx3 = dx / 3;
if (Node.GetType() == typeof(Numeric.TimeDomain.Acoustic_Compact_FDTD.Bound_Node))
{
Point3d START = corner + new Rhino.Geometry.Point3d(dx * x, dx * y, dx * z);
DisplayMesh.Add(Mesh.CreateFromBox(new BoundingBox(START, START + new Point3d(dx, dx, dx)), 1, 1, 1));
List<Numeric.TimeDomain.Acoustic_Compact_FDTD.Bound_Node.Boundary> B = (Node as Numeric.TimeDomain.Acoustic_Compact_FDTD.Bound_Node_RDD).B_List;
Mesh[] corners = new Mesh[B.Count];
for (int i = 0; i < B.Count; i++)
{
switch (B[i])
{
case Acoustic_Compact_FDTD.Bound_Node.Boundary.AXNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, dx3, 0), START + new Point3d(2 * dx3, 2 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.AXPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, dx3, 2 * dx3), START + new Point3d(2 * dx3, 2 * dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.AYNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, 0, dx3), START + new Point3d(2 * dx3, dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.AYPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, 2 * dx3, dx3), START + new Point3d(2 * dx3, 3 * dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.AZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, dx3, dx3), START + new Point3d(dx3, 2 * dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.AZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, dx3, dx3), START + new Point3d(3 * dx3, 2 * dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXNegYNegZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START, START + new Point3d(dx3, dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXNegYNegZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, 0, 2 * dx3), START + new Point3d(dx3, dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXNegYPosZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, 2 * dx3, 0), START + new Point3d(dx3, 3 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXNegYPosZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, 2 * dx3, 2 * dx3), START + new Point3d(dx3, 3 * dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXPosYNegZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, 0, 0), START + new Point3d(3 * dx3, dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXPosYNegZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, 0, 2 * dx3), START + new Point3d(3 * dx3, dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXPosYPosZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, 2 * dx3, 0), START + new Point3d(3 * dx3, 3 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.DXPosYPosZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, 2 * dx3, 2 * dx3), START + new Point3d(3 * dx3, 3 * dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXNegYNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, 0, dx3), START + new Point3d(dx3, dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXNegYPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, 2 * dx3, 0), START + new Point3d(dx3, 3 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXNegZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, dx3, 0), START + new Point3d(dx3, 2 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXNegZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(0, dx3, 2 * dx3), START + new Point3d(dx3, 2 * dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXPosYNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, 0, dx3), START + new Point3d(3 * dx3, dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXPosYPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, 2 * dx3, dx3), START + new Point3d(3 * dx3, 3 * dx3, 2 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXPosZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, dx3, 0), START + new Point3d(3 * dx3, 2 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDXPosZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(2 * dx3, dx3, 2 * dx3), START + new Point3d(3 * dx3, 2 * dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDYNegZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, 0, 0), START + new Point3d(2 * dx3, dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDYNegZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, 0, 2 * dx3), START + new Point3d(2 * dx3, dx3, 3 * dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDYPosZNeg:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, 2 * dx3, 0), START + new Point3d(2 * dx3, 3 * dx3, dx3)), 1, 1, 1);
break;
case Acoustic_Compact_FDTD.Bound_Node.Boundary.SDYPosZPos:
corners[i] = Mesh.CreateFromBox(new BoundingBox(START + new Point3d(dx3, 2 * dx3, 2 * dx3), START + new Point3d(2 * dx3, 3 * dx3, 3 * dx3)), 1, 1, 1);
break;
}
DirMesh.Add(corners);
}
}
this.Enabled = true;
}
public Message(string sender, Numeric command, params string[] argv)
: this(sender, ((int)command).ToString("000"), argv)
{
}
public void SendNumeric(Numeric numeric, params string[] argv)
{
var args = new List<string>();
args.Add(username);
args.AddRange(argv);
SendFromServer(numeric, args.ToArray());
}
public void SendFromServer(Numeric numeric, params string[] argv)
{
Send(new Message(LOCALHOST, numeric, argv));
}
public void Send(string sender, Numeric numeric, params string[] argv)
{
Send(new Message(sender, numeric, argv));
}
/* Function: solve_secant
* Purpose: Solves f(x) = 0 when function is differentiable by replacing f'(x)
* with difference quotient, using the current point and previous
* point visited in algorithm
* Parameters: x - Initial guess for solution x
* ap - absolute precision
* rp - relative precision
* ns - max number of iterations
* Returns: Approximation for exact solution.
*/
public double solve_secant(double x, double ap = 0.000001, double rp = 0.0001, int ns = 20)
{
double fx = f(x);
double Dfx = Df(x);
double x_old = 0.0;
double fx_old = 0.0;
Numeric n = new Numeric();
try
{
for (int k = 0; k < ns; k++)
{
if (Math.Abs(Dfx) < ap)
{
throw new ArithmeticException("Unstable Solution");
}
x_old = x;
fx_old = fx;
x = x - fx / Dfx;
if ((k > 2) && (Math.Abs(x - x_old) < Math.Max(ap, Math.Abs(x) * rp)))
{
return x;
}
fx = f(x);
Dfx = (fx - fx_old) / (x - x_old);
}
throw new ArithmeticException("No convergence.");
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
return Double.NaN;
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
ThrowIfDisposed();
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (nodes.Count == 0)
{
return;
}
context.Validate(_effect);
context.ThrowIfCameraMissing();
var graphicsDevice = context.GraphicsService.GraphicsDevice;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
graphicsDevice.RasterizerState = RasterizerState.CullNone;
graphicsDevice.DepthStencilState = DepthStencilState.DepthRead;
graphicsDevice.BlendState = BlendState.AlphaBlend;
// Camera properties
var cameraNode = context.CameraNode;
Pose cameraPose = cameraNode.PoseWorld;
Matrix view = (Matrix) new Matrix44F(cameraPose.Orientation.Transposed, new Vector3F(0));
Matrix projection = cameraNode.Camera.Projection;
_effectParameterViewProjection.SetValue(view * projection);
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as SkyObjectNode;
if (node == null)
{
continue;
}
// SkyObjectNode is visible in current frame.
node.LastFrame = frame;
// Get billboard axes from scene node pose.
Matrix33F orientation = node.PoseWorld.Orientation;
Vector3F right = orientation.GetColumn(0);
Vector3F up = orientation.GetColumn(1);
Vector3F normal = orientation.GetColumn(2);
Vector3F forward = -normal;
_effectParameterNormal.SetValue((Vector3)(normal));
// ----- Render object texture.
var texture = node.Texture;
if (texture != null)
{
_effectParameterUp.SetValue((Vector3)(up));
_effectParameterRight.SetValue((Vector3)(right));
_effectParameterSunLight.SetValue((Vector3)node.SunLight);
_effectParameterAmbientLight.SetValue(new Vector4((Vector3)node.AmbientLight, node.Alpha));
_effectParameterObjectTexture.SetValue(texture.TextureAtlas);
_effectParameterLightWrapSmoothness.SetValue(new Vector2(node.LightWrap, node.LightSmoothness));
_effectParameterSunDirection.SetValue((Vector3)node.SunDirection);
float halfWidthX = (float)Math.Tan(node.AngularDiameter.X / 2);
float halfWidthY = (float)Math.Tan(node.AngularDiameter.Y / 2);
// Texture coordinates of packed texture.
Vector2F texCoordLeftTop = texture.GetTextureCoordinates(new Vector2F(0, 0), 0);
Vector2F texCoordRightBottom = texture.GetTextureCoordinates(new Vector2F(1, 1), 0);
float texCoordLeft = texCoordLeftTop.X;
float texCoordTop = texCoordLeftTop.Y;
float texCoordRight = texCoordRightBottom.X;
float texCoordBottom = texCoordRightBottom.Y;
_effectParameterTextureParameters.SetValue(new Vector4(
(texCoordLeft + texCoordRight) / 2,
(texCoordTop + texCoordBottom) / 2,
1 / ((texCoordRight - texCoordLeft) / 2), // 1 / half extent
1 / ((texCoordBottom - texCoordTop) / 2)));
_vertices[0].Position = (Vector3)(forward - right * halfWidthX - up * halfWidthY);
_vertices[0].TextureCoordinate = new Vector2(texCoordLeft, texCoordBottom);
_vertices[1].Position = (Vector3)(forward - right * halfWidthX + up * halfWidthY);
_vertices[1].TextureCoordinate = new Vector2(texCoordLeft, texCoordTop);
_vertices[2].Position = (Vector3)(forward + right * halfWidthX - up * halfWidthY);
_vertices[2].TextureCoordinate = new Vector2(texCoordRight, texCoordBottom);
_vertices[3].Position = (Vector3)(forward + right * halfWidthX + up * halfWidthY);
_vertices[3].TextureCoordinate = new Vector2(texCoordRight, texCoordTop);
if (context.IsHdrEnabled())
{
_effectPassObjectLinear.Apply();
}
else
{
_effectPassObjectGamma.Apply();
}
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _vertices, 0, 2);
}
// ----- Render glows.
if (node.GlowColor0.LengthSquared > 0 || node.GlowColor1.LengthSquared > 0)
{
_effectParameterGlow0.SetValue(new Vector4((Vector3)node.GlowColor0, node.GlowExponent0));
_effectParameterGlow1.SetValue(new Vector4((Vector3)node.GlowColor1, node.GlowExponent1));
float halfWidth0 = (float)Math.Tan(Math.Acos(Math.Pow(node.GlowCutoffThreshold / node.GlowColor0.LargestComponent, 1 / node.GlowExponent0)));
if (!Numeric.IsPositiveFinite(halfWidth0))
{
halfWidth0 = 0;
}
float halfWidth1 = (float)Math.Tan(Math.Acos(Math.Pow(node.GlowCutoffThreshold / node.GlowColor1.LargestComponent, 1 / node.GlowExponent1)));
if (!Numeric.IsPositiveFinite(halfWidth1))
{
halfWidth1 = 0;
}
float halfWidth = Math.Max(halfWidth0, halfWidth1);
_vertices[0].Position = (Vector3)(forward - right * halfWidth - up * halfWidth);
_vertices[0].TextureCoordinate = (Vector2) new Vector2F(0, 1);
_vertices[1].Position = (Vector3)(forward - right * halfWidth + up * halfWidth);
_vertices[1].TextureCoordinate = (Vector2) new Vector2F(0, 0);
_vertices[2].Position = (Vector3)(forward + right * halfWidth - up * halfWidth);
_vertices[2].TextureCoordinate = (Vector2) new Vector2F(1, 1);
_vertices[3].Position = (Vector3)(forward + right * halfWidth + up * halfWidth);
_vertices[3].TextureCoordinate = (Vector2) new Vector2F(1, 0);
if (context.IsHdrEnabled())
{
_effectPassGlowLinear.Apply();
}
else
{
_effectPassGlowGamma.Apply();
}
graphicsDevice.DrawUserPrimitives(PrimitiveType.TriangleStrip, _vertices, 0, 2);
}
}
savedRenderState.Restore();
}
protected override double FindRoot(Func <double, double> function, double x0, double x1)
{
NumberOfIterations = 0;
double yLow = function(x0);
double yHigh = function(x1);
// Is one of the bounds the solution?
if (Numeric.IsZero(yLow, EpsilonY))
{
return(x0);
}
if (Numeric.IsZero(yHigh, EpsilonY))
{
return(x1);
}
// Is the bracket valid?
if (Numeric.AreEqual(x0, x1, EpsilonX) || yLow * yHigh >= 0)
{
return(double.NaN);
}
// Setup xLow and xHigh.
double xLow, xHigh;
if (yLow < 0)
{
xLow = x0;
xHigh = x1;
}
else
{
xLow = x1;
xHigh = x0;
MathHelper.Swap(ref yLow, ref yHigh);
}
for (int i = 0; i < MaxNumberOfIterations; i++)
{
NumberOfIterations++;
// The step size. dx steps from xLow to xHigh.
double dx = xHigh - xLow;
// Assume that the function is linear between xLow and xHigh.
// And choose x for f(x) = 0 under this assumption
double x = xLow + dx * yLow / (yLow - yHigh);
double y = function(x);
// Stop if x is the result or if the stepsize dx is less than Epsilon.
if (Numeric.IsZero(y, EpsilonY) || Numeric.IsZero(dx, EpsilonX))
{
return(x);
}
// Choose new bracket.
if (y < 0)
{
xLow = x;
yLow = y;
}
else
{
xHigh = x;
yHigh = y;
}
}
return(double.NaN);
}
protected override void OnKH()
{
switch (step)
{
case 1:
if (!ReferenceEquals(code, null))
{
Numeric
k1 = program.GetValue(code.operand1),
k2 = program.GetValue(code.operand2);
TransformEncType(k1, k2);
}
else
{
Run();
}
break;
case 2:
parallelism = key.Length / 2;
scaleBits = new byte[parallelism];
kf = new Numeric[parallelism];
encType = resultEncType;
if (!ReferenceEquals(code, null))
{
scaleBits[0] = Numeric.Scale(key[0], key[1]);
// both not encrypted
if (key[0].GetEncType() == EncryptionType.None && key[1].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
if (scaleBits[0] == 0)
{
kf[0] = key[0] * key[1];
kf[0].SetScaleBits(0);
}
else
{
kf[0] = new Numeric((key[0].GetSignedBigInteger() * key[1].GetSignedBigInteger()) >> scaleBits[0], scaleBits[0]);
}
// jump to round 7
step = 6;
Run();
break;
}
// one is encrypted, the other is not
else if (key[0].GetEncType() == EncryptionType.None || key[1].GetEncType() == EncryptionType.None)
{
if (scaleBits[0] == 0)
{
kf[0] = key[0] * key[1];
kf[0].SetScaleBits(0);
// jump to round 7
step = 6;
Run();
break;
}
else
{
// if both operands are fixed-pointer integers,
// we treat the non-encryped operand as if the encrpted value is the original value and the key is 0,
// then we use the confidential protocol to computer the result.
if (key[0].GetEncType() == EncryptionType.None)
{
key[0] = new Numeric(0, scaleBits[0]);
//kf[0] = new Numeric(key[0].GetSignedBigInteger() * key[1].GetUnsignedBigInteger(), 0);
}
else
{
key[1] = new Numeric(0, scaleBits[0]);
//kf[0] = new Numeric(key[0].GetUnsignedBigInteger() * key[1].GetSignedBigInteger(), 0);
}
//krIdxMap.Add(0, 0);
//kr.Add(key[0]);
//// jump to round 5
//round = 4;
//Run();
//break;
}
}
}
k6 = new Numeric[parallelism];
ka = new Numeric[parallelism];
Numeric[]
kbAndEnck6ka = new Numeric[2 * parallelism],
kb = new Numeric[parallelism];
for (int p = 0; p < parallelism; ++p)
{
ka[p] = new Numeric(key[2 * p]);
kb[p] = new Numeric(key[2 * p + 1]);
System.Diagnostics.Debug.Assert(ka[p].GetScaleBits() == kb[p].GetScaleBits());
scaleBits[p] = ka[p].GetScaleBits();
ka[p].ResetScaleBits();
kb[p].ResetScaleBits();
k6[p] = Utility.NextUnsignedNumeric(0);
Numeric enck6ka = (new Numeric(0, 0) - ka[p]) + k6[p];
kbAndEnck6ka[2 * p] = kb[p];
kbAndEnck6ka[2 * p + 1] = enck6ka;
}
var toEVH = Message.AssembleMessage(line, opType, false, k6);
party.sender.SendTo(PartyType.EVH, toEVH);
byte[] toHelper = Message.AssembleMessage(line, opType, false, kbAndEnck6ka);
party.sender.SendTo(PartyType.Helper, toHelper);
party.receiver.ReceiveFrom(PartyType.Helper, line, this, enck5kbplusk2AndK7);
break;
case 3:
party.receiver.ReceiveFrom(PartyType.EVH, line, this, enckbplusk2b);
break;
case 4:
int count = 0;
for (int p = 0; p < parallelism; ++p)
{
//System.Diagnostics.Debug.Assert(enck5kbplusk2AndK7[2 * p].GetScalingFactor() == scalingFactor[p]);
//System.Diagnostics.Debug.Assert(enck5kbplusk2AndK7[2 * p + 1].GetScalingFactor() == scalingFactor[p]);
//System.Diagnostics.Debug.Assert(enckbplusk2b[p].GetScalingFactor() == scalingFactor[p]);
Numeric
enck5kbplusk2 = enck5kbplusk2AndK7[2 * p],
k7 = enck5kbplusk2AndK7[2 * p + 1],
t2 = (new Numeric(0, 0) - ka[p]) * enckbplusk2b[p],
t3 = (new Numeric(0, 0) - k6[p]) * enck5kbplusk2;
kf[p] = k7 - t2 - t3;
if (scaleBits[p] != 0)
{
krIdxMap.Add(count++, p);
kr.Add(kf[p]);
}
}
Run();
break;
case 5:
if (kr.Count != 0)
{
newKey = new NumericArray();
new AddModToAddOnKH(party, line, this, new NumericArray(kr.ToArray()), newKey).Run();
}
else
{
Run();
}
break;
case 6:
if (kr.Count != 0)
{
for (int i = 0; i < kr.Count; ++i)
{
System.Diagnostics.Debug.Assert(newKey[i].GetUnsignedBigInteger() == newKey[i].GetSignedBigInteger());
kf[krIdxMap[i]] = new Numeric(newKey[i].GetUnsignedBigInteger() >> scaleBits[krIdxMap[i]], scaleBits[krIdxMap[i]]);
//kf[krIdxMap[i]] = new Numeric((BigInteger)(newKey[i].GetVal() / Math.Pow(2, scaleBits[krIdxMap[i]])), scaleBits[krIdxMap[i]]);
//kf[krIdxMap[i]].SetEncType(EncryptionType.AddMod);
}
}
Run();
break;
case 7:
SetResult(encType, kf);
break;
case 8:
InvokeCaller();
break;
default:
throw new Exception();
}
}
public void ToStringTest()
{
NumericTypes type = new NumericTypes(); // TODO: Initialize to an appropriate value
Numeric target = new Numeric(type); // TODO: Initialize to an appropriate value
string expected = string.Empty; // TODO: Initialize to an appropriate value
string actual;
actual = target.ToString();
Assert.AreEqual(expected, actual);
Assert.Inconclusive("Verify the correctness of this test method.");
}
protected override void OnEVH()
{
switch (step)
{
case 1:
if (!ReferenceEquals(code, null))
{
Numeric
enc_ka_a = program.GetValue(code.operand1),
enc_kb_b = program.GetValue(code.operand2);
TransformEncType(enc_ka_a, enc_kb_b);
}
else
{
Run();
}
break;
case 2:
encType = resultEncType;
parallelism = encVal.Length / 2;
enckfab = new Numeric[parallelism];
scaleBits = new byte[parallelism];
if (!ReferenceEquals(code, null))
{
scaleBits[0] = Numeric.Scale(encVal[0], encVal[1]);
// both not encrypted
// **tested**
if (encVal[0].GetEncType() == EncryptionType.None && encVal[1].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
if (scaleBits[0] == 0)
{
enckfab[0] = encVal[0] * encVal[1];
enckfab[0].SetScaleBits(0);
}
else
{
enckfab[0] = new Numeric((encVal[0].GetSignedBigInteger() * encVal[1].GetSignedBigInteger()) >> scaleBits[0], scaleBits[0]);
}
// jump to round 7
step = 6;
Run();
break;
}
// one is encrypted, the other is not
else if (encVal[0].GetEncType() == EncryptionType.None || encVal[1].GetEncType() == EncryptionType.None)
{
// **tested**
if (scaleBits[0] == 0)
{
enckfab[0] = encVal[0] * encVal[1];
enckfab[0].SetScaleBits(0);
// jump to round 7
step = 6;
Run();
break;
}
// **tested**
else
{
// if both operands are fixed-pointer integers,
// we treat the non-encryped operand as if the encrpted value is the original value and the key is 0,
// then we use the confidential protocol to computer the result.
//if (encVal[0].GetEncType() == EncryptionType.None)
//{
// enckfab[0] = new Numeric(encVal[0].GetSignedBigInteger() * encVal[1].GetUnsignedBigInteger(), 0);
//}
//else
//{
// enckfab[0] = new Numeric(encVal[0].GetUnsignedBigInteger() * encVal[1].GetSignedBigInteger(), 0);
//}
//erIdxMap.Add(0, 0);
//er.Add(enckfab[0]);
//// jump to round 5
//round = 4;
//Run();
//break;
}
}
}
enckbplusk2b = new Numeric[parallelism];
enckaa = new Numeric[parallelism];
Numeric[]
enckaaAndK2 = new Numeric[2 * parallelism],
enckbb = new Numeric[parallelism];
for (int p = 0; p < parallelism; ++p)
{
enckaa[p] = new Numeric(encVal[2 * p]);
enckbb[p] = new Numeric(encVal[2 * p + 1]);
System.Diagnostics.Debug.Assert(enckaa[p].GetScaleBits() == enckbb[p].GetScaleBits());
scaleBits[p] = enckaa[p].GetScaleBits();
enckaa[p].ResetScaleBits();
enckbb[p].ResetScaleBits();
// System.Diagnostics.Debug.Assert(encVal[2 * p + 1].GetScalingFactor() == scalingFactor[p]);
// byte[] k2 = fixedKey2;
Numeric
k2 = Utility.NextUnsignedNumeric(0);
enckbplusk2b[p] = enckbb[p] + k2;
enckaaAndK2[2 * p] = enckaa[p];
enckaaAndK2[2 * p + 1] = k2;
}
var toKH = Message.AssembleMessage(line, opType, false, enckbplusk2b);
party.sender.SendTo(PartyType.KH, toKH);
var toHelper = Message.AssembleMessage(line, opType, true, enckaaAndK2);
party.sender.SendTo(PartyType.Helper, toHelper);
party.receiver.ReceiveFrom(PartyType.KH, line, this, k6);
break;
case 3:
party.receiver.ReceiveFrom(PartyType.Helper, line, this, enck7p7iAndK5);
break;
case 4:
int count = 0;
for (int p = 0; p < parallelism; ++p)
{
//System.Diagnostics.Debug.Assert(k6[p].GetScalingFactor() == scalingFactor[p]);
//System.Diagnostics.Debug.Assert(enck7p7iAndK5[2 * p].GetScalingFactor() == scalingFactor[p]);
//System.Diagnostics.Debug.Assert(enck7p7iAndK5[2 * p + 1].GetScalingFactor() == scalingFactor[p]);
Numeric
t0 = enckaa[p] * enckbplusk2b[p],
enck7p7 = enck7p7iAndK5[2 * p],
k5 = enck7p7iAndK5[2 * p + 1];
enckfab[p] = t0 + enck7p7 + ((new Numeric(0, 0) - k5) * (new Numeric(0, 0) - k6[p]));
if (scaleBits[p] != 0)
{
erIdxMap.Add(count++, p);
//er.Add(new Numeric(enckfab[p].ToUnsignedBigInteger() & Numeric.oneMaskMap[scalingFactor[p]], 0));
er.Add(enckfab[p]);
}
}
Run();
break;
case 5:
if (er.Count != 0)
{
enc_newKey_a = new NumericArray();
new AddModToAddOnEVH(party, line, this, new NumericArray(er.ToArray()), enc_newKey_a).Run();
}
else
{
Run();
}
break;
case 6:
if (er.Count != 0)
{
for (int i = 0; i < er.Count; ++i)
{
//System.Diagnostics.Debug.WriteLine(enc_newKey_a[i].GetUnsignedBigInteger());
//System.Diagnostics.Debug.WriteLine(enc_newKey_a[i].GetSignedBigInteger());
System.Diagnostics.Debug.Assert(enc_newKey_a[i].GetUnsignedBigInteger() == enc_newKey_a[i].GetSignedBigInteger());
enckfab[erIdxMap[i]] = new Numeric(enc_newKey_a[i].GetUnsignedBigInteger() >> scaleBits[erIdxMap[i]], scaleBits[erIdxMap[i]]);
// enckfab[erIdxMap[i]] = new Numeric((BigInteger)(enc_paddedKey_a[i].GetVal() / Math.Pow(2, scaleBits[erIdxMap[i]])), scaleBits[erIdxMap[i]]);
}
}
Run();
break;
case 7:
SetResult(encType, enckfab);
break;
case 8:
InvokeCaller();
break;
default:
throw new Exception();
}
}
/// <summary>
/// returns the lengths of the number
/// </summary>
/// <param name="thisNumber"></param>
/// <param name="wholeNumberLength"></param>
/// <param name="decimalLength"></param>
public static void GetNumericLengths(this INumeric thisNumber,
out Numeric wholeNumberLength,
out Numeric decimalLength)
{
if (thisNumber == null)
throw new ArgumentNullException("thisNumber");
var counter1 = thisNumber.GetCompatibleZero().HasAddition();
var counter2 = thisNumber.GetCompatibleZero().HasAddition();
thisNumber.ZoneIterate((node) =>
{
counter1.AddOne();
}, (node) =>
{
counter2.AddOne();
}, false);
wholeNumberLength = counter1.InnermostNumeric;
decimalLength = counter2.InnermostNumeric;
}
// -----------------------
// ------ VALUE ----------
// -----------------------
public T Value(T x)
{
Numeric <T, C> xNew = x - x0;
return(((a * xNew + b) * xNew + c) * xNew + d);
}
public static void test_condition_number()
{
Numeric n = new Numeric();
List<double[]> list1 = new List<double[]>() { new double[] { 1, 2 }, new double[] { 3, 4 } };
Console.WriteLine("\nTesting test_condition_number(Matrix A) ...\n");
try
{
Console.WriteLine("\tExpecting:\tCondition number of Matrix [[1, 2], [3, 4]] = 21");
Console.WriteLine("\t Result:\tCondition number of Matrix " + Matrix.from_list(list1) + " = " + n.condition_number(Matrix.from_list(list1)));
}
catch (Exception e)
{
Console.WriteLine("{0} Exception caught.", e.ToString());
}
Console.WriteLine("\nTesting test_condition_number(f, x=None, h=0.000001) ...\n");
try
{
MyFunction3 fn = new MyFunction3();
Console.WriteLine("\tExpecting:\tCondition number of function f(x) = (x * x) - (5.0 * x) = 0.75");
Console.WriteLine("\t Result:\tCondition number of function f(x) = (x * x) - (5.0 * x) = " + n.condition_number(fn, 1));
}
catch (Exception e)
{
Console.WriteLine("{0} Exception caught.", e.ToString());
}
}
/// <summary>
/// for a given list of numbers gets the longest lengths
/// </summary>
/// <param name="thisList"></param>
/// <param name="wholeNumberLength"></param>
/// <param name="decimalLength"></param>
public static void GetNumericListLengths(this List<INumeric> thisList,
out Numeric wholeNumberLength,
out Numeric decimalLength)
{
if (thisList == null)
throw new ArgumentNullException("thisList");
Numeric maxWholeNumberLength = null;
Numeric maxDecimalLength = null;
thisList.WithEach(num =>
{
Numeric eachWholeNumberLength = null;
Numeric eachDecimalLength = null;
num.GetNumericLengths(out eachWholeNumberLength, out eachDecimalLength);
if (eachWholeNumberLength.IsGreaterThan(maxWholeNumberLength))
maxWholeNumberLength = eachWholeNumberLength;
if (eachDecimalLength.IsGreaterThan(maxDecimalLength))
maxDecimalLength = eachDecimalLength;
});
wholeNumberLength = maxWholeNumberLength;
decimalLength = maxDecimalLength;
}
public static AddDigitOperationLine New(Numeric number1, Numeric number2, Numeric orderOfMagnitude)
{
return new AddDigitOperationLine(number1, number2, orderOfMagnitude);
}
// Add newAabb to the finalAabb list. If there is an overlap, the new AABB is clipped.
// The final list will not have any overlaps.
private void AddAabbWithClipping(List <Aabb> finalAabbs, ref Aabb newAabb)
{
// Add all new AABBs to stack.
_aabbStack.Clear();
_aabbStack.Push(newAabb);
// Test all AABBs from the stack against the final AABBs. If an AABB passes all final AABB
// overlap tests, it is added to final AABBs. If an AABB overlaps a final AABB, it is cut
// into two parts. These two parts replace the AABB on the stack.
int finalAabbsIndex = 0;
while (_aabbStack.Count > 0)
{
// Get AABB from stack but do not remove it.
var aabb = _aabbStack.Peek();
if (finalAabbsIndex >= finalAabbs.Count)
{
// AABB was checked against all final AABBs.
// Move from stack to final list.
_aabbStack.Pop();
finalAabbs.Add(aabb);
finalAabbsIndex = 0;
continue;
}
// Cut against finalAabbs[finalAabbsIndex].
var finalAabb = finalAabbs[finalAabbsIndex];
if (!HaveContactXZ(ref aabb, ref finalAabb))
{
// No overlap. check against next AABB.
finalAabbsIndex++;
continue;
}
finalAabbsIndex = 0;
// Overlap! Cut this AABB into two.
// Remove from stack.
_aabbStack.Pop();
var aabbA = aabb;
var aabbB = aabb;
if (aabb.Minimum.X < finalAabb.Minimum.X)
{
// Cut at final AABB min x:
aabbA.Maximum.X = finalAabb.Minimum.X;
aabbB.Minimum.X = finalAabb.Minimum.X;
}
else if (aabb.Maximum.X > finalAabb.Maximum.X)
{
// Cut at final AABB max x:
aabbA.Maximum.X = finalAabb.Maximum.X;
aabbB.Minimum.X = finalAabb.Maximum.X;
}
else if (aabb.Minimum.Z < finalAabb.Minimum.Z)
{
// Cut at final AABB min z:
aabbA.Maximum.Z = finalAabb.Minimum.Z;
aabbB.Minimum.Z = finalAabb.Minimum.Z;
}
else if (aabb.Maximum.Z > finalAabb.Maximum.Z)
{
// Cut at final AABB max z:
aabbA.Maximum.Z = finalAabb.Maximum.Z;
aabbB.Minimum.Z = finalAabb.Maximum.Z;
}
else
{
// AABB is totally inside and is not needed.
continue;
}
// Add non-empty AABBs to stack.
if (!Numeric.AreEqual(aabbA.Minimum.X, aabbA.Maximum.X) &&
!Numeric.AreEqual(aabbA.Minimum.Z, aabbA.Maximum.Z))
{
_aabbStack.Push(aabbA);
}
if (!Numeric.AreEqual(aabbB.Minimum.X, aabbB.Maximum.X) &&
!Numeric.AreEqual(aabbB.Minimum.Z, aabbB.Maximum.Z))
{
_aabbStack.Push(aabbB);
}
}
}
protected override void OnEVH()
{
switch (step)
{
case 1:
parallelism = encVal.Length;
encType = resultEncType;
if (!ReferenceEquals(code, null))
{
Numeric enckaa = program.GetValue(code.operand1);
encVal = new NumericArray(enckaa);
length = Config.NumericBits;
if (encVal[0].GetEncType() == EncryptionType.None)
{
encType = EncryptionType.None;
if (encVal[0].GetUnsignedBigInteger() == 0)
{
encH = new NumericArray(new Numeric(1, 0));
}
else
{
encH = new NumericArray(new Numeric(0, 0));
}
// jump to round 4
step = 3;
Run();
break;
}
}
new HammingDistanceOnEVH(party, line, this, encVal, encH, length).Run();
break;
case 2:
new FastEqualZeroOnEVH(party, line, this, encH, encH, (int)Math.Ceiling(Math.Log(length + 1, 2))).Run();
break;
case 3:
// as subfunction, the result should be 0 if secret == 0
// however the result from FastEqualZero if 1 if secret == 0
if (ReferenceEquals(code, null))
{
for (int p = 0; p < parallelism; p++)
{
encH[p] ^= new Numeric(1, 0);
}
}
Run();
break;
case 4:
SetResult(encType, encH.GetArray());
break;
case 5:
InvokeCaller();
break;
default:
throw new Exception();
////System.Diagnostics.Debug.Assert(le >= 2 || le == 0);
//if (le > 2)
//{
// le = (int)Math.Ceiling(Math.Log(le + 1, 2));
// new HammingDistanceOnEVH(party, line, this, encH, encH, le).Run();
//}
//else if (le == 2)
//{
// var OROperand = new Numeric[2 * parallelism];
// for (int p = 0; p < parallelism; ++p)
// {
// OROperand[2 * p] = encH[p] >> 1;
// OROperand[2 * p + 1] = encH[p].ModPow(1);
// }
// le = 0;
// new OROnEVH(party, line, this, new NumericArray(OROperand), encH).Run();
//}
//else
//{
// Numeric[] enckf = new Numeric[parallelism];
// for (int p = 0; p < parallelism; ++p)
// {
// enckf[p] = encH[p].ModPow(1);
// //enckf[p].SetEncType(EncryptionType.XOR);
// }
// if(!ReferenceEquals(code, null))
// {
// // not as a subfunction
// enckf[0] ^= new Numeric(1, 0);
// }
// SetResult(enckf);
//}
//break;
}
}
protected override Size ArrangeOverride(Size finalSize)
{
// Ensure that all axes are up to date.
foreach (Axis axis in _monitoredAxes)
{
axis.Update();
}
UIElementCollection children = Children;
for (int i = 0; i < children.Count; ++i)
{
UIElement child = children[i];
if (child == null)
{
continue;
}
// Get the child or one of its descendants that needs to be positioned.
DependencyObject elementThatRequiresArrange = GetElementThatRequiresArrange(child);
if (elementThatRequiresArrange == null)
{
// This child ignores the attached properties (X1, Y1, X2, Y2).
Rect childBounds = new Rect(new Point(), finalSize);
// Arrange element,
child.Arrange(childBounds);
// Clip to chart area.
if (GetClipToChartArea(child))
{
ClipElementToChartArea(child, childBounds);
}
}
else
{
// Determine alignment.
HorizontalAlignment horizontalAlignment = HorizontalAlignment.Left;
VerticalAlignment verticalAlignment = VerticalAlignment.Top;
if (elementThatRequiresArrange is FrameworkElement)
{
FrameworkElement frameworkElement = (FrameworkElement)elementThatRequiresArrange;
horizontalAlignment = frameworkElement.HorizontalAlignment;
verticalAlignment = frameworkElement.VerticalAlignment;
}
// Get associated axes.
Axis xAxis = GetXAxis(elementThatRequiresArrange);
Axis yAxis = GetYAxis(elementThatRequiresArrange);
// Check whether we have to position the element relative to a point (X1, Y1)
// or inside a region (X1, Y1) - (X2, Y2).
// Convert positions given in data values to pixel positions.
double x1 = xAxis.GetPosition(GetX1(elementThatRequiresArrange));
double y1 = yAxis.GetPosition(GetY1(elementThatRequiresArrange));
double x2 = xAxis.GetPosition(GetX2(elementThatRequiresArrange));
double y2 = yAxis.GetPosition(GetY2(elementThatRequiresArrange));
bool isX1Valid = Numeric.IsFinite(x1);
bool isY1Valid = Numeric.IsFinite(y1);
bool isX2Valid = Numeric.IsFinite(x2);
bool isY2Valid = Numeric.IsFinite(y2);
double availableWidth = Double.PositiveInfinity;
double availableHeight = Double.PositiveInfinity;
if (!isX1Valid && !isX2Valid)
{
// No coordinates set. Use 0 and 'left' alignment.
x1 = 0;
x2 = Double.NaN;
horizontalAlignment = HorizontalAlignment.Left;
}
else if (!isX1Valid)
{
// Only X2 set. Use X2 as position.
x1 = x2;
x2 = Double.NaN;
}
else if (isX2Valid)
{
// X1 and X2 are set.
int result = Numeric.Compare(x1, x2);
if (result < 0)
{
// X1 < X2: Horizontal region.
availableWidth = x2 - x1;
}
else if (result == 0)
{
// X1 == X2: Use only X1.
x2 = Double.NaN;
}
else
{
// X2 > X1: Horizontal region, but swapped.
ChartHelper.Swap(ref x1, ref x2);
availableWidth = x2 - x1;
}
}
if (!isY1Valid && !isY2Valid)
{
// No coordinates set. Use 0 and 'top' alignment.
y1 = 0;
y2 = Double.NaN;
verticalAlignment = VerticalAlignment.Top;
}
else if (!isY1Valid)
{
// Only Y2 set. Use Y2 as position.
y1 = y2;
y2 = Double.NaN;
}
else if (isY2Valid)
{
// Y1 and Y2 are set.
int result = Numeric.Compare(y1, y2);
if (result < 0)
{
// Y1 < Y2: Horizontal region.
availableHeight = y2 - y1;
}
else if (result == 0)
{
// Y1 == Y2: Use only Y1.
y2 = Double.NaN;
}
else
{
// Y2 > Y1: Horizontal region, but swapped.
ChartHelper.Swap(ref y1, ref y2);
availableHeight = y2 - y1;
}
}
// Get size of child.
double elementWidth = child.DesiredSize.Width;
double elementHeight = child.DesiredSize.Height;
if (elementWidth == 0.0 && elementHeight == 0.0 && child is FrameworkElement)
{
// Fix for Silverlight.
FrameworkElement frameworkElement = (FrameworkElement)child;
elementWidth = frameworkElement.ActualWidth;
elementHeight = frameworkElement.ActualHeight;
}
// Compute bounds of the child element.
Rect childBounds = new Rect();
// Position child horizontally.
if (Numeric.IsNaN(x2))
{
// Position child relative to point.
switch (horizontalAlignment)
{
case HorizontalAlignment.Left:
case HorizontalAlignment.Stretch:
childBounds.X = x1;
childBounds.Width = elementWidth;
break;
case HorizontalAlignment.Center:
childBounds.X = x1 - elementWidth / 2.0;
childBounds.Width = elementWidth;
break;
case HorizontalAlignment.Right:
childBounds.X = x1 - elementWidth;
childBounds.Width = elementWidth;
break;
}
}
else
{
// Position child inside horizontal region.
switch (horizontalAlignment)
{
case HorizontalAlignment.Left:
childBounds.X = x1;
childBounds.Width = elementWidth;
break;
case HorizontalAlignment.Center:
childBounds.X = x1 + availableWidth / 2.0 - elementWidth / 2.0;
childBounds.Width = elementWidth;
break;
case HorizontalAlignment.Right:
childBounds.X = x2 - elementWidth;
childBounds.Width = elementWidth;
break;
case HorizontalAlignment.Stretch:
childBounds.X = x1;
childBounds.Width = availableWidth;
break;
}
}
// Position child vertically.
if (Numeric.IsNaN(y2))
{
// Position child relative to point.
switch (verticalAlignment)
{
case VerticalAlignment.Top:
case VerticalAlignment.Stretch:
childBounds.Y = y1;
childBounds.Height = elementHeight;
break;
case VerticalAlignment.Center:
childBounds.Y = y1 - elementHeight / 2.0;
childBounds.Height = elementHeight;
break;
case VerticalAlignment.Bottom:
childBounds.Y = y1 - elementHeight;
childBounds.Height = elementHeight;
break;
}
}
else
{
// Position child inside vertical region.
switch (verticalAlignment)
{
case VerticalAlignment.Top:
childBounds.Y = y1;
childBounds.Height = elementHeight;
break;
case VerticalAlignment.Center:
childBounds.Y = y1 + availableHeight / 2.0 - elementHeight / 2.0;
childBounds.Height = elementHeight;
break;
case VerticalAlignment.Bottom:
childBounds.Y = y2 - elementHeight;
childBounds.Height = elementHeight;
break;
case VerticalAlignment.Stretch:
childBounds.Y = y1;
childBounds.Height = availableHeight;
break;
}
}
// Arrange element.
child.Arrange(childBounds);
// Clip to chart area.
if (elementThatRequiresArrange is UIElement && GetClipToChartArea(elementThatRequiresArrange))
{
UIElement element = (UIElement)elementThatRequiresArrange;
ClipElementToChartArea(element, childBounds);
}
}
}
return(finalSize);
}
public static void RunTest()
{
Console.WriteLine("choose the test:");
Console.WriteLine(" 1. nested while loop");
Console.WriteLine(" 2. nested if-else statement");
Console.WriteLine(" 3. while Loop in if-else statement");
Console.WriteLine(" 4. if-else statement in while loop");
int whichTest = Convert.ToInt32(Console.ReadLine());
int keyLen = 64;
int numericBitLen = 40;
byte scaleBits = 21;
Config.SetGlobalParameters(keyLen, numericBitLen, scaleBits, false);
int attempts = 1;
Random rnd = new Random(1);
int corrCount = 0;
for (int i = 0; i < attempts; i++)
{
//int x = (Math.Abs(rnd.Next()) % 10);
double x = 6;
//int x = 0;
double err = 0;
double corr = 0;
Numeric res = null;
switch (whichTest)
{
case 1:
corr = CorrNestedWhileTest(x);
res = NestedWhileTest(x);
break;
case 2:
corr = CorrNestedIfElseTest(x);
res = NestedIfElseTest(x);
break;
case 3:
corr = CorrWhileInIfElseTest(x);
res = WhileInIfElseTest(x);
break;
case 4:
corr = CorrIfElseInWhileTest(x);
res = IfElseInWhileTest(x);
break;
default:
throw new ArgumentException();
}
err = Math.Abs(res.GetVal() - corr);
if (err < 0.1)
{
corrCount++;
}
Console.WriteLine("x: " + x + ", corr: " + corr + ", computed: " + res.GetVal());
}
Console.WriteLine("accuracy: " + corrCount / attempts);
}
public AdditionStep(Numeric arg1, Numeric arg2)
{
this.Arg1 = arg1;
this.Arg2 = arg2;
this.CarryLine = arg1.GetCompatibleZero();
//get the order of magnitudes
List<INumeric> list = new List<INumeric>();
if(arg1 != null)
list.Add(arg1);
if(arg2 != null)
list.Add(arg2);
list.g
}
protected override void AddNodeEx(SceneNode node, RenderContext context)
{
bool hasMaxDistance = Numeric.IsPositiveFinite(node.MaxDistance);
var lodGroupNode = node as LodGroupNode;
bool isLodGroupNode = (lodGroupNode != null);
float distance = 0;
if (hasMaxDistance || isLodGroupNode)
{
// ----- Calculate view-normalized distance.
// The view-normalized distance is the distance between scene node and
// camera node corrected by the camera field of view. This metric is used
// for distance culling and LOD selection.
var cameraNode = context.LodCameraNode;
distance = GraphicsHelper.GetViewNormalizedDistance(node, cameraNode);
// Apply LOD bias. (The LOD bias is a factor that can be used to increase
// or decrease the viewing distance.)
distance *= cameraNode.LodBias * context.LodBias;
}
// ----- Distance Culling: Check whether scene node is within MaxDistance.
if (hasMaxDistance && distance >= node.MaxDistance)
{
return; // Ignore scene node.
}
// ----- Optional: Fade out scene node near MaxDistance to avoid popping.
if (context.LodBlendingEnabled && node.SupportsInstanceAlpha())
{
float d = node.MaxDistance - distance;
float alpha = (d < context.LodHysteresis) ? d / context.LodHysteresis : 1;
node.SetInstanceAlpha(alpha);
}
if (isLodGroupNode)
{
// ----- Evaluate LOD group.
var lodSelection = lodGroupNode.SelectLod(context, distance);
// ----- Optional: LOD Blending.
if (lodSelection.Next != null &&
context.LodBlendingEnabled &&
lodSelection.Current.SupportsInstanceAlpha() &&
lodSelection.Next.SupportsInstanceAlpha())
{
// The LOD group is currently transitioning between two LODs. Both LODs
// have an "InstanceAlpha" material parameter, i.e. we can create a
// smooth transition by blending between both LODs.
// --> Render both LODs using screen door transparency (stipple patterns).
// The current LOD (alpha = 1 - t) is faded out and the next LOD is faded
// in (alpha = t).
// The fade-in uses the regular stipple pattern and the fade-out needs to
// use the inverted stipple pattern. If the alpha value is negative the
// shader will use the inverted stipple pattern - see effect Material.fx.)
AddSubtree(lodSelection.Current, context);
lodSelection.Current.SetInstanceAlpha(-(1 - lodSelection.Transition));
AddSubtree(lodSelection.Next, context);
lodSelection.Next.SetInstanceAlpha(lodSelection.Transition);
}
else
{
// No blending between two LODs. Just show current LOD.
if (lodSelection.Current.SupportsInstanceAlpha())
{
lodSelection.Current.SetInstanceAlpha(1);
}
AddSubtree(lodSelection.Current, context);
}
}
else
{
// ----- Handle normal nodes.
AddNode(node);
}
}
public static AdditionStep New(Numeric arg1, Numeric arg2)
{
return new AdditionStep(arg1, arg2);
}
/// <summary>
/// Measures the child elements of a <see cref="ChartPanel"/> in anticipation of arranging
/// them during the <see cref="ArrangeOverride(Size)"/> pass.
/// </summary>
/// <param name="availableSize">
/// An upper limit <see cref="Size"/> that should not be exceeded.
/// </param>
/// <returns>
/// A <see cref="Size"/> that represents the size that is required to arrange child content.
/// </returns>
protected override Size MeasureOverride(Size availableSize)
{
// Ensure that all axes are up to date.
foreach (Axis axis in _monitoredAxes)
{
axis.Update();
}
// Measure each child and calculate the bounds of child.
UIElementCollection children = Children;
for (int i = 0; i < children.Count; ++i)
{
// Get child element.
UIElement child = children[i];
if (child == null)
{
continue;
}
// Get the child or one of its descendants that needs to be positioned.
DependencyObject elementThatRequiresArrange = GetElementThatRequiresArrange(child);
if (elementThatRequiresArrange == null)
{
// This child ignores the attached properties (X1, Y1, X2, Y2).
child.Measure(availableSize);
continue;
}
// Get associated axes.
Axis xAxis = GetXAxis(elementThatRequiresArrange);
Axis yAxis = GetYAxis(elementThatRequiresArrange);
// Check whether we have to position the element relative to a point (X1, Y1)
// or inside a region (X1, Y1) - (X2, Y2).
// Convert positions given in data values to pixel positions.
double x1 = xAxis.GetPosition(GetX1(elementThatRequiresArrange));
double y1 = yAxis.GetPosition(GetY1(elementThatRequiresArrange));
double x2 = xAxis.GetPosition(GetX2(elementThatRequiresArrange));
double y2 = yAxis.GetPosition(GetY2(elementThatRequiresArrange));
double availableWidth = Double.PositiveInfinity;
double availableHeight = Double.PositiveInfinity;
if (Numeric.IsFinite(x1) && Numeric.IsFinite(x2))
{
// X1 and X2 are set.
double range = Math.Abs(x2 - x1);
if (!Numeric.IsZero(range))
{
availableWidth = range;
}
}
if (Numeric.IsFinite(y1) && Numeric.IsFinite(y2))
{
// Y1 and Y2 are set.
double range = Math.Abs(y2 - y1);
if (!Numeric.IsZero(range))
{
availableHeight = range;
}
}
// Measure child and store its desired arrangement.
Size elementConstraint = new Size(availableWidth, availableHeight);
child.Measure(elementConstraint);
}
// Do not demand any size.
// (The ChartPanel is similar to a canvas.)
return(new Size());
}
protected override float FindRoot(Func <float, float> function, float x0, float x1)
{
Debug.Assert(function != null);
Debug.Assert(Derivative != null);
NumberOfIterations = 0;
float yLow = function(x0);
float yHigh = function(x1);
// Is one of the bounds the solution?
if (Numeric.IsZero(yLow, EpsilonY))
{
return(x0);
}
if (Numeric.IsZero(yHigh, EpsilonY))
{
return(x1);
}
// Is the bracket valid?
if (Numeric.AreEqual(x0, x1, EpsilonX) || yLow * yHigh >= 0)
{
return(float.NaN);
}
float xLow, xHigh;
if (yLow < 0)
{
xLow = x0;
xHigh = x1;
}
else
{
xLow = x1;
xHigh = x0;
}
// Initial guess:
float x = (x0 + x1) / 2;
// The step size before the last.
float dxOld = Math.Abs(x1 - x0);
// The step size.
float dx = dxOld;
float y = function(x);
// Stop if x is the result or if the step size dx is less than Epsilon.
if (Numeric.IsZero(y, EpsilonY) || Numeric.IsZero(dx, EpsilonX))
{
return(x);
}
for (int i = 0; i < MaxNumberOfIterations; i++)
{
NumberOfIterations++;
float dyOverDt = Derivative(x);
// Choose new x.
// Bisect if Newton would jump out of the brackets or step size would be too small.
if ((((x - xHigh) * dyOverDt - y) * ((x - xLow) * dyOverDt - y) > 0) ||
(Math.Abs(2 * y) > Math.Abs(dxOld * dyOverDt)))
{
// Bisect.
dxOld = dx;
dx = (xHigh - xLow) / 2;
x = xLow + dx;
}
else
{
// Newton step.
dxOld = dx;
dx = y / dyOverDt;
x -= dx;
}
y = function(x);
// Stop if x is the result or if the step size dx is less than Epsilon.
if (Numeric.IsZero(y, EpsilonY) || Numeric.IsZero(dx, EpsilonX))
{
return(x);
}
// Choose new bracket.
if (y < 0)
{
xLow = x;
}
else
{
xHigh = x;
}
}
return(float.NaN);
}
public void Length2()
{
Vector3 v = new Vector3(1.0f, 2.0f, 3.0f);
v.Length = 0.5f;
Assert.IsTrue(Numeric.AreEqual(0.5f, v.Length));
}
public void ComputeCollision()
{
RayBoxAlgorithm algo = new RayBoxAlgorithm(new CollisionDetection());
CollisionObject ray = new CollisionObject(new GeometricObject
{
Shape = new RayShape(new Vector3F(0, 0, 0), new Vector3F(-1, 0, 0), 10),
Pose = new Pose(new Vector3F(0, 0, 0)),
});
CollisionObject box = new CollisionObject(new GeometricObject
{
Shape = new BoxShape(2, 4, 8),
});
ContactSet set;
set = algo.GetClosestPoints(ray, box);
Assert.AreEqual(true, algo.HaveContact(ray, box));
Assert.AreEqual(true, algo.HaveContact(box, ray));
Assert.AreEqual(0, set[0].PenetrationDepth);
Assert.AreEqual(0, algo.GetContacts(box, ray)[0].PenetrationDepth);
Assert.AreEqual(new Vector3F(), algo.GetContacts(box, ray)[0].Position);
// Hit + x face.
((GeometricObject)box.GeometricObject).Pose = new Pose(new Vector3F(-1, 2, -4));
((GeometricObject)ray.GeometricObject).Pose = new Pose(new Vector3F(1, 0.5f, -2));
set = algo.GetClosestPoints(ray, box);
Assert.AreEqual(true, algo.HaveContact(ray, box));
Assert.AreEqual(true, algo.HaveContact(box, ray));
Assert.AreEqual(1, set[0].PenetrationDepth);
Assert.AreEqual(1, algo.GetContacts(box, ray)[0].PenetrationDepth);
Assert.AreEqual(-Vector3F.UnitX, algo.GetContacts(ray, box)[0].Normal);
Assert.AreEqual(new Vector3F(0, 0.5f, -2), algo.GetContacts(box, ray)[0].Position);
((GeometricObject)ray.GeometricObject).Pose = new Pose(new Vector3F(3, 2, -2));
((RayShape)ray.GeometricObject.Shape).Direction = new Vector3F(-1, 1, 0).Normalized;
algo.UpdateContacts(set, 0);
Assert.AreEqual(false, algo.HaveContact(ray, box));
Assert.AreEqual(false, algo.HaveContact(box, ray));
Assert.AreEqual(0, set.Count);
Assert.IsTrue(Numeric.AreEqual(-(float)Math.Sqrt(0.5 * 0.5 + 0.5 * 0.5), algo.GetClosestPoints(ray, box)[0].PenetrationDepth));
// Face is separating plane.
((GeometricObject)ray.GeometricObject).Pose = new Pose(new Vector3F(3, 2, -2));
((RayShape)ray.GeometricObject.Shape).Direction = new Vector3F(0, 1, 0);
algo.UpdateContacts(set, 0);
Assert.AreEqual(false, algo.HaveContact(ray, box));
Assert.AreEqual(false, algo.HaveContact(box, ray));
Assert.AreEqual(0, set.Count);
// Hit -x face.
((GeometricObject)ray.GeometricObject).Pose = new Pose(new Vector3F(-5, -1, 0));
((RayShape)ray.GeometricObject.Shape).Direction = new Vector3F(1, 1, 0).Normalized;
set = set.Swapped;
algo.UpdateContacts(set, 0);
Assert.AreEqual(true, algo.HaveContact(ray, box));
Assert.AreEqual(true, algo.HaveContact(box, ray));
Assert.IsTrue(Numeric.AreEqual((float)Math.Sqrt(3 * 3 + 3 * 3), set[0].PenetrationDepth));
Assert.AreEqual(-Vector3F.UnitX, set[0].Normal);
}
public virtual void Visit(Numeric numeric)
{
}
internal static bool HaveContact(Aabb aabb, Vector3F rayOrigin, Vector3F rayDirectionInverse, float rayLength, float epsilon)
{
// Note: If HaveContact is called several times for the same ray, we could return
// tMin and tMax --> Parameter (ref float tMin and ref float tMax). Check tMin and tMax
// against the first results.
// The points on a ray are x = rayOrigin + t * rayDirection.
// The points on a plane follow this equation: x . planeNormal = planeDistanceFromOrigin.
// Substituting the x in the second equation, we can solve for t and get:
// t = (planeDistanceFromOrigin - rayOrigin . planeNormal) / (rayDirection . planeNormal)
//
// For Aabbs the planeNormals are the unit vectors.
// The planeDistances are the components of Aabb.Minimum and Maximum.
// Compute tMin and tMax for all plane intersections. If a tMin is greater than a
// tMax we can abort early. If tMin <= rayLength and tMax >= 0 we have a hit.
float tMin = 0;
float tMax = rayLength;
{
// tMinX
float nearPlaneDistanceX = (rayDirectionInverse.X > 0) ? aabb.Minimum.X - epsilon : aabb.Maximum.X + epsilon;
float tMinX = (nearPlaneDistanceX - rayOrigin.X) * rayDirectionInverse.X;
if (tMinX > tMax)
{
return(false);
}
if (tMinX > tMin)
{
tMin = tMinX;
}
// tMaxX
float farPlaneDistanceX = (rayDirectionInverse.X > 0) ? aabb.Maximum.X + epsilon : aabb.Minimum.X - epsilon;
float tMaxX = (farPlaneDistanceX - rayOrigin.X) * rayDirectionInverse.X;
if (tMin > tMaxX)
{
return(false);
}
if (tMaxX < tMax)
{
tMax = tMaxX;
}
// Note: tMinX/tMaxX can be NaN if the ray origin is in the min or max X plane and the
// ray is parallel to the plane. In this degenerate case we do not care about the
// result, so no special treatment is needed.
Debug.Assert(tMinX <= tMaxX || Numeric.IsNaN(tMinX) || Numeric.IsNaN(tMaxX));
}
{
// tMaxY
float farPlaneDistanceY = (rayDirectionInverse.Y > 0) ? aabb.Maximum.Y + epsilon: aabb.Minimum.Y - epsilon;
float tMaxY = (farPlaneDistanceY - rayOrigin.Y) * rayDirectionInverse.Y;
if (tMin > tMaxY)
{
return(false);
}
if (tMaxY < tMax)
{
tMax = tMaxY;
}
// tMinY
float nearPlaneDistanceY = (rayDirectionInverse.Y > 0) ? aabb.Minimum.Y - epsilon : aabb.Maximum.Y + epsilon;
float tMinY = (nearPlaneDistanceY - rayOrigin.Y) * rayDirectionInverse.Y;
if (tMinY > tMax)
{
return(false);
}
if (tMinY > tMin)
{
tMin = tMinY;
}
}
{
// tMinZ
float nearPlaneDistanceZ = (rayDirectionInverse.Z > 0) ? aabb.Minimum.Z - epsilon: aabb.Maximum.Z + epsilon;
float tMinZ = (nearPlaneDistanceZ - rayOrigin.Z) * rayDirectionInverse.Z;
if (tMinZ > tMax)
{
return(false);
}
if (tMinZ > tMin)
{
tMin = tMinZ;
}
// tMaxZ
float farPlaneDistanceZ = (rayDirectionInverse.Z > 0) ? aabb.Maximum.Z + epsilon : aabb.Minimum.Z - epsilon;
float tMaxZ = (farPlaneDistanceZ - rayOrigin.Z) * rayDirectionInverse.Z;
if (tMin > tMaxZ)
{
return(false);
}
if (tMaxZ < tMax)
{
tMax = tMaxZ;
}
}
Debug.Assert(tMin <= tMax + epsilon || tMax < 0 || tMin >= rayLength || Numeric.IsNaN(tMin) || Numeric.IsNaN(tMax));
if (tMax < 0)
{
return(false);
}
if (tMin > rayLength)
{
return(false);
}
return(true);
}
public override Vector2F GetTangent(float parameter)
{
int numberOfKeys = Count;
if (numberOfKeys == 0)
{
return(new Vector2F());
}
CurveKey2F firstKey = Items[0];
CurveKey2F lastKey = Items[numberOfKeys - 1];
float curveStart = firstKey.Parameter;
float curveEnd = lastKey.Parameter;
if (PreLoop == CurveLoopType.Constant && parameter < curveStart ||
PostLoop == CurveLoopType.Constant && parameter > curveEnd)
{
return(Vector2F.UnitX);
}
// Correct parameter.
float loopedParameter = LoopParameter(parameter);
ICurve <float, float> xSpline, ySpline;
// Note: Tangents from splines are relative to the spline parameter range [0,1]. We have
// to divide by the spline length measured in the curve parameter unit.
// Handle CurveLoopType.Linear:
// If parameter is outside: Use spline tangent. Exceptions are Bézier and Hermite
// were the exact tangent is given in the outer keys.
if (loopedParameter < curveStart)
{
Debug.Assert(PreLoop == CurveLoopType.Linear);
Vector2F tangent;
switch (firstKey.Interpolation)
{
case SplineInterpolation.Bezier:
tangent = (firstKey.Point - firstKey.TangentIn) * 3;
break;
case SplineInterpolation.Hermite:
tangent = firstKey.TangentIn;
break;
case SplineInterpolation.StepLeft:
case SplineInterpolation.StepCentered:
case SplineInterpolation.StepRight:
tangent = Vector2F.UnitX;
break;
default:
if (numberOfKeys > 1)
{
GetSplines(0, out xSpline, out ySpline);
tangent = new Vector2F(xSpline.GetTangent(0), ySpline.GetTangent(0));
((IRecyclable)xSpline).Recycle();
((IRecyclable)ySpline).Recycle();
}
else
{
tangent = Vector2F.UnitX;
}
break;
}
float splineLength = (numberOfKeys > 1) ? Items[1].Parameter - curveStart : 0;
return((splineLength > 0) ? tangent / splineLength : tangent);
}
else if (loopedParameter > curveEnd)
{
Debug.Assert(PostLoop == CurveLoopType.Linear);
Vector2F tangent;
switch (lastKey.Interpolation)
{
case SplineInterpolation.Bezier:
tangent = (lastKey.TangentOut - lastKey.Point) * 3;
break;
case SplineInterpolation.Hermite:
tangent = lastKey.TangentOut;
break;
case SplineInterpolation.StepLeft:
case SplineInterpolation.StepCentered:
case SplineInterpolation.StepRight:
tangent = Vector2F.UnitX;
break;
default:
if (numberOfKeys > 1)
{
GetSplines(numberOfKeys - 2, out xSpline, out ySpline);
tangent = new Vector2F(xSpline.GetTangent(1), ySpline.GetTangent(1));
((IRecyclable)xSpline).Recycle();
((IRecyclable)ySpline).Recycle();
}
else
{
tangent = Vector2F.UnitX;
}
break;
}
float splineLength = (numberOfKeys > 1) ? curveEnd - Items[numberOfKeys - 2].Parameter : 0;
return((splineLength > 0) ? tangent / splineLength : tangent);
}
else
{
if (numberOfKeys == 1)
{
// Degenerate curves with 1 key.
// Note: The following tangents are not scaled because we do not have enough information.
if (PostLoop == CurveLoopType.Linear)
{
// Pick outgoing tangent.
CurveKey2F p = firstKey;
if (p.Interpolation == SplineInterpolation.Bezier)
{
return((p.TangentOut - p.Point) * 3);
}
if (p.Interpolation == SplineInterpolation.Hermite)
{
return(p.TangentOut);
}
}
else if (PreLoop == CurveLoopType.Linear)
{
// Pick incoming tangent.
CurveKey2F p = firstKey;
if (p.Interpolation == SplineInterpolation.Bezier)
{
return((p.Point - p.TangentIn) * 3);
}
if (p.Interpolation == SplineInterpolation.Hermite)
{
return(p.TangentIn);
}
}
return(Vector2F.UnitX);
}
int index = GetKeyIndex(loopedParameter);
if (index == numberOfKeys - 1)
{
index--; // For the last key we take the previous spline.
}
Debug.Assert(0 <= index && index < numberOfKeys - 1);
CurveKey2F p2 = Items[index];
CurveKey2F p3 = Items[index + 1];
// Special case: Step interpolation.
if (p2.Interpolation == SplineInterpolation.StepLeft ||
p2.Interpolation == SplineInterpolation.StepCentered ||
p2.Interpolation == SplineInterpolation.StepRight)
{
return(Vector2F.UnitX);
}
float splineStart = p2.Parameter;
float splineEnd = p3.Parameter;
float splineLength = splineEnd - splineStart;
// Get splines for this segment.
GetSplines(index, out xSpline, out ySpline);
// Find correct parameter.
float relativeParameter = 0;
if (!Numeric.IsZero(splineLength))
{
if (Items[index].Interpolation == SplineInterpolation.Bezier ||
Items[index].Interpolation == SplineInterpolation.BSpline ||
Items[index].Interpolation == SplineInterpolation.CatmullRom ||
Items[index].Interpolation == SplineInterpolation.Hermite)
{
// x spline is not linearly proportional. Need root finding.
relativeParameter = CurveHelper.GetParameter(xSpline, loopedParameter, 20);
if (Numeric.IsNaN(relativeParameter) && Items[index].Interpolation == SplineInterpolation.BSpline)
{
// Search neighbor splines. BSpline do not normally go exactly from p2 to p3.
// Try left neighbor spline first.
if (index - 1 >= 0 && Items[index - 1].Interpolation == SplineInterpolation.BSpline)
{
((IRecyclable)xSpline).Recycle();
((IRecyclable)ySpline).Recycle();
GetSplines(index - 1, out xSpline, out ySpline);
relativeParameter = CurveHelper.GetParameter(xSpline, loopedParameter, 20);
}
// If we didn't get a solution search the right neighbor.
if (Numeric.IsNaN(relativeParameter) && index + 1 < numberOfKeys - 1 &&
Items[index + 1].Interpolation == SplineInterpolation.BSpline)
{
((IRecyclable)xSpline).Recycle();
((IRecyclable)ySpline).Recycle();
GetSplines(index + 1, out xSpline, out ySpline);
relativeParameter = CurveHelper.GetParameter(xSpline, loopedParameter, 20);
}
}
Debug.Assert(
Items[index].Interpolation == SplineInterpolation.BSpline
|| // BSplines do sometimes not include the boundary points, but for the rest we expect a solution.
Numeric.AreEqual(
xSpline.GetPoint(relativeParameter),
loopedParameter,
Math.Max(Math.Abs(splineLength) * Numeric.EpsilonF * 10, Numeric.EpsilonF)));
}
else
{
relativeParameter = (loopedParameter - splineStart) / splineLength;
}
}
float tangentX = xSpline.GetTangent(relativeParameter);
float tangentY = ySpline.GetTangent(relativeParameter);
if (IsInMirroredOscillation(parameter))
{
tangentY = -tangentY; // Mirrored direction.
}
((IRecyclable)xSpline).Recycle();
((IRecyclable)ySpline).Recycle();
return(new Vector2F(tangentX, tangentY) / splineLength);
}
}
/// <summary>
/// Called when the simulation wants this force effect to apply forces to rigid bodies.
/// </summary>
protected override void OnApply()
{
RigidBody chassis = Vehicle.Chassis;
Pose chassisPose = chassis.Pose;
float mass = chassis.MassFrame.Mass;
Vector3 up = chassisPose.ToWorldDirection(Vector3.UnitY);
float deltaTime = Simulation.Settings.Timing.FixedTimeStep;
int numberOfWheels = Vehicle.Wheels.Count;
for (int i = 0; i < numberOfWheels; i++)
{
var wheel = Vehicle.Wheels[i];
// Update contact info.
wheel.PreviousSuspensionLength = wheel.SuspensionLength;
wheel.UpdateContactInfo();
float normalDotUp = Vector3.Dot(wheel.GroundNormal, up);
if (!wheel.HasGroundContact || Numeric.IsLessOrEqual(normalDotUp, 0))
{
// ----- The simple case: The wheel is in the air.
// To keep it simple: The wheel continues spinning in the same direction.
// Damp angular velocity.
wheel.AngularVelocity *= 0.99f;
// Update rotation angle.
wheel.RotationAngle += wheel.AngularVelocity * deltaTime;
// TODO: Slow down or stop spin when braking.
// TODO: Reverse velocity when force reverses.
continue;
}
// ----- The wheel touches the ground.
// ----- Suspension force
float springForce = wheel.SuspensionStiffness
* mass
* (wheel.SuspensionRestLength - wheel.SuspensionLength)
* normalDotUp;
// The compression velocity:
// (Note: Alternatively we could compute the velocity from point velocities of chassis
// and the hit body.)
float compressionVelocity = (wheel.PreviousSuspensionLength - wheel.SuspensionLength) / deltaTime;
float damping = (compressionVelocity > 0) ? wheel.SuspensionCompressionDamping : wheel.SuspensionRelaxationDamping;
float dampingForce = damping * mass * compressionVelocity;
// Force acting on chassis in up direction:
float normalForce = MathHelper.Clamp(springForce + dampingForce, 0, wheel.MaxSuspensionForce);
// If the suspension has reached the minimum length, we must add a large force
// that stops any further compression.
if (wheel.SuspensionLength <= wheel.MinSuspensionLength)
{
// ComputeStopImpulse computes an impulse that stops any movement between the
// ground and the wheel in a given direction (up direction in this case).
float force = ComputeStopImpulse(wheel, up) / deltaTime; // force = impulse / dt
// force can be negative if the ground and the chassis are already separating.
// Only apply the force if is positive (= it pushes the chassis away from the ground).
if (force > 0)
{
normalForce += force;
}
}
AddForce(chassis, normalForce * up, wheel.GroundPosition);
AddForce(wheel.TouchedBody, -normalForce * up, wheel.GroundPosition);
// ----- Ground tangents
Vector3 right = chassisPose.ToWorldDirection(Matrix.CreateRotationY(wheel.SteeringAngle) * Vector3.UnitX);
Vector3 groundForward = Vector3.Cross(wheel.GroundNormal, right).Normalized;
Vector3 groundRight = Vector3.Cross(groundForward, wheel.GroundNormal).Normalized;
// ----- Side force
float sideForce = ComputeStopImpulse(wheel, groundRight) / deltaTime; // force = impulse / dt
// Assume that all wheels act together:
sideForce /= numberOfWheels;
// ----- Forward force
float rollingFrictionForce;
if (Math.Abs(wheel.MotorForce) > wheel.BrakeForce)
{
// If the motor is driving the car, assume that the friction force has the same
// magnitude (100% friction, the whole motor force is delivered to the ground.)
rollingFrictionForce = wheel.MotorForce - wheel.BrakeForce;
}
else
{
// The motor is off, or we are braking.
// Compute a friction force that would stop the car.
rollingFrictionForce = ComputeStopImpulse(wheel, groundForward) / deltaTime;
// Limit the friction force by the wheel.RollingFrictionForce (can be 0) or the
// the current brake force.
float brakeForce = wheel.BrakeForce - Math.Abs(wheel.MotorForce);
float maxFriction = Math.Max(wheel.RollingFrictionForce, brakeForce);
rollingFrictionForce = MathHelper.Clamp(rollingFrictionForce, -maxFriction, maxFriction);
}
// The current side force and rolling friction force assume perfect friction. But the
// friction force is limited by the normal force that presses onto the ground:
// MaxFrictionForce = µ * NormalForce
float maxFrictionForce = wheel.Friction * normalForce;
// Compute combined force parallel to ground surface.
Vector3 tangentForce = rollingFrictionForce * groundForward + sideForce * groundRight;
float tangentForceLength = tangentForce.Length;
if (tangentForceLength > maxFrictionForce)
{
// Not enough traction - that means, we are sliding!
var skidForce = tangentForceLength - maxFrictionForce;
var skidVelocity = skidForce * deltaTime / mass;
wheel.SkidEnergy = maxFrictionForce * skidVelocity * deltaTime;
// The friction forces must be scaled.
float factor = maxFrictionForce / tangentForceLength;
rollingFrictionForce *= factor;
sideForce *= factor;
}
else
{
// The force is within the friction cone. No sliding.
wheel.SkidEnergy = 0;
}
// Apply rolling friction force. This drives the car.
AddForce(chassis, rollingFrictionForce * groundForward, wheel.GroundPosition);
AddForce(wheel.TouchedBody, -rollingFrictionForce * groundForward, wheel.GroundPosition);
// Apply side friction force
// If we apply the side force on the ground position, the car starts rolling (tilt) in
// tight curves. If we apply the force on a higher position, rolling is reduced.
Vector3 sideForcePosition = wheel.GroundPosition + wheel.RollReduction * (wheel.SuspensionLength + wheel.Radius) * up;
AddForce(chassis, sideForce * groundRight, sideForcePosition);
AddForce(wheel.TouchedBody, -sideForce * groundRight, sideForcePosition);
// ----- Update AngularVelocity and Rotation.
// We set the angular velocity, so that the wheel matches the moving underground.
Vector3 relativeContactVelocity = chassis.GetVelocityOfWorldPoint(wheel.GroundPosition)
- wheel.TouchedBody.GetVelocityOfWorldPoint(wheel.GroundPosition);
float forwardVelocity = Vector3.Dot(relativeContactVelocity, groundForward);
wheel.AngularVelocity = forwardVelocity / wheel.Radius;
wheel.RotationAngle += wheel.AngularVelocity * deltaTime;
// TODO: Use a more realistic AngularVelocity!
// - Apply the skid energy to show sliding wheels.
// - Set AngularVelocity to 0 when brakes are active - for more dramatic effect.
}
}
public bool IsNumerc_IsValid(string propertyValue)
{
//Create Validator
var validator = new Numeric<Contact>();
RuleValidatorContext<Contact, string> context = BuildContextForLength(propertyValue);
var notification = new ValidationNotification();
//Validate the validator only, return true of no error returned
return validator.Validate(context, null, notification);
}
public void registerNumeric <A>(
string name, Ref <A> a, Numeric <A> num,
ImmutableList <A> quickSetValues = null
) =>
registerNumeric(name, a, num, num.fromInt(1), quickSetValues);
internal static void GetMass(Shape shape, Vector3F scale, float densityOrMass, bool isDensity, float relativeDistanceThreshold, int iterationLimit,
out float mass, out Vector3F centerOfMass, out Matrix33F inertia)
{
if (shape == null)
{
throw new ArgumentNullException("shape");
}
if (densityOrMass <= 0)
{
throw new ArgumentOutOfRangeException("densityOrMass", "The density or mass must be greater than 0.");
}
if (relativeDistanceThreshold < 0)
{
throw new ArgumentOutOfRangeException("relativeDistanceThreshold", "The relative distance threshold must not be negative.");
}
mass = 0;
centerOfMass = Vector3F.Zero;
inertia = Matrix33F.Zero;
// Note: We support all shape types of DigitalRune Geometry.
// To support user-defined shapes we could add an interface IMassSource which can be
// implemented by shapes. In the else-case below we can check whether the shape implements
// the interface.
if (shape is EmptyShape)
{
return;
}
else if (shape is InfiniteShape)
{
mass = float.PositiveInfinity;
inertia = Matrix33F.CreateScale(float.PositiveInfinity);
}
else if (shape is BoxShape)
{
GetMass((BoxShape)shape, scale, densityOrMass, isDensity, out mass, out inertia);
}
else if (shape is CapsuleShape)
{
GetMass((CapsuleShape)shape, scale, densityOrMass, isDensity, out mass, out inertia);
}
else if (shape is ConeShape)
{
GetMass((ConeShape)shape, scale, densityOrMass, isDensity, out mass, out centerOfMass, out inertia);
}
else if (shape is CylinderShape)
{
GetMass((CylinderShape)shape, scale, densityOrMass, isDensity, out mass, out inertia);
}
else if (shape is ScaledConvexShape)
{
var scaledConvex = (ScaledConvexShape)shape;
GetMass(scaledConvex.Shape, scale * scaledConvex.Scale, densityOrMass, isDensity, relativeDistanceThreshold, iterationLimit, out mass, out centerOfMass, out inertia);
}
else if (shape is SphereShape)
{
GetMass((SphereShape)shape, scale, densityOrMass, isDensity, out mass, out inertia);
}
else if (shape is TransformedShape)
{
var transformed = (TransformedShape)shape;
// Call GetMass for the contained GeometricObject.
GetMass(transformed.Child, scale, densityOrMass, isDensity, relativeDistanceThreshold, iterationLimit, out mass, out centerOfMass, out inertia);
}
else if (shape is HeightField)
{
// Height fields should always be static. Therefore, they we can treat them as having
// infinite or zero mass.
return;
}
else if (shape is CompositeShape)
{
var composite = (CompositeShape)shape;
float density = (isDensity) ? densityOrMass : 1;
foreach (var child in composite.Children)
{
// Call GetMass for the child geometric object.
float childMass;
Vector3F childCenterOfMass;
Matrix33F childInertia;
GetMass(child, scale, density, true, relativeDistanceThreshold, iterationLimit, out childMass, out childCenterOfMass, out childInertia);
// Add child mass to total mass.
mass = mass + childMass;
// Add child inertia to total inertia and consider the translation.
inertia += GetTranslatedMassInertia(childMass, childInertia, childCenterOfMass);
// Add weighted centerOfMass.
centerOfMass = centerOfMass + childCenterOfMass * childMass;
}
// centerOfMass must be divided by total mass because child center of mass were weighted
// with the child masses.
centerOfMass /= mass;
// Make inertia relative to center of mass.
inertia = GetUntranslatedMassInertia(mass, inertia, centerOfMass);
if (!isDensity)
{
// Yet, we have not computed the correct total mass. We have to adjust the total mass to
// be equal to the given target mass.
AdjustMass(densityOrMass, ref mass, ref inertia);
}
}
else if (iterationLimit <= 0)
{
// We do not have a special formula for this kind of shape and iteration limit is 0 or less.
// --> Use mass properties of AABB.
var aabb = shape.GetAabb(scale, Pose.Identity);
var extent = aabb.Extent;
centerOfMass = aabb.Center;
GetMass(extent, densityOrMass, isDensity, out mass, out inertia);
}
else
{
// We do not have a special formula for this kind of shape.
// --> General polyhedron mass from triangle mesh.
var mesh = shape.GetMesh(relativeDistanceThreshold, iterationLimit);
mesh.Transform(Matrix44F.CreateScale(scale));
GetMass(mesh, out mass, out centerOfMass, out inertia);
// Mass was computed for density = 1. --> Scale mass.
if (isDensity)
{
var volume = mesh.GetVolume();
var targetMass = volume * densityOrMass;
AdjustMass(targetMass, ref mass, ref inertia);
}
else
{
AdjustMass(densityOrMass, ref mass, ref inertia);
}
if (Numeric.IsLessOrEqual(mass, 0))
{
// If the mass is not valid, we fall back to the AABB mass.
// This can happen for non-closed meshes that have a "negative" volume.
GetMass(shape, scale, densityOrMass, isDensity, relativeDistanceThreshold, -1, out mass, out centerOfMass, out inertia);
return;
}
}
}
/// <summary>
/// Raises the <see cref="ChartElement.Updated"/> event.
/// </summary>
/// <remarks>
/// <strong>Notes to Inheritors:</strong> When overriding <see cref="OnUpdate"/> in a
/// derived class, be sure to call the base class's <see cref="OnUpdate"/> method so that
/// the base class <see cref="Chart"/> can update the data source if required.
/// </remarks>
protected override void OnUpdate()
{
base.OnUpdate(); // Updates the data source, if required.
Debug.Assert(Canvas.Children.Count == 0, "Canvas should be cleared in base class.");
if (Data == null || Data.Count == 0 || DataPointTemplate == null)
{
// A relevant property is not set.
return;
}
Axis xAxis = XAxis;
Axis yAxis = YAxis;
Orientation orientation = EffectiveOrientation;
Axis baseAxis = (orientation == Orientation.Vertical) ? xAxis : yAxis;
// Number of bars in a cluster:
int numberOfBarCharts = GetNumberOfBarCharts();
// Index of this bar in the cluster:
int currentClusterPosition = GetClusterPosition();
double barWidth = GetBarWidth();
double effectiveBarGapWidth = EffectiveBarGapWidth;
var group = Group as BarChartGroup;
bool isClustered = (group != null && group.Grouping == BarChartGrouping.Clustered);
// Prepare for clipping
double leftCutoff = baseAxis.Scale.Min;
double rightCutoff = baseAxis.Scale.Max;
int numberOfDataPoints = Data.Count;
for (int i = 0; i < numberOfDataPoints; ++i)
{
// Check to see if any values are null. If so, then continue.
double barHeight;
DataPoint data = GetPointWithGrouping(i, out barHeight);
if (Numeric.IsNaN(data.X) || Numeric.IsNaN(data.Y))
{
continue;
}
#region ----- Horizontal clipping of data values for speed-up -----
{
// We cannot clip the current value because the value could be outside of the
// scale, but the bar could still be visible.
// Therefore we use the left and the right neighbor to check if the current
// value is too far off the scale.
if (i > 0)
{
double xPrevious = GetPointWithGrouping(i - 1).X;
double yPrevious = GetPointWithGrouping(i - 1).Y;
if (orientation == Orientation.Vertical && xPrevious > rightCutoff ||
orientation == Orientation.Horizontal && yPrevious > rightCutoff)
{
continue;
}
}
if (i < numberOfDataPoints - 1)
{
double xNext = GetPointWithGrouping(i + 1).X;
double yNext = GetPointWithGrouping(i + 1).Y;
if (orientation == Orientation.Vertical && xNext < leftCutoff ||
orientation == Orientation.Horizontal && yNext < leftCutoff)
{
continue;
}
}
}
#endregion
double basePosition; // Position on base axis.
double dataPosition; // Position on data axis
double baseLinePosition; // Get position of zero value base line on data axis.
if (orientation == Orientation.Vertical)
{
basePosition = xAxis.GetPosition(data.X);
dataPosition = yAxis.GetPosition(data.Y);
baseLinePosition = yAxis.GetPosition(data.Y - barHeight);
}
else
{
basePosition = yAxis.GetPosition(data.Y);
dataPosition = xAxis.GetPosition(data.X);
baseLinePosition = xAxis.GetPosition(data.X - barHeight);
}
if (isClustered)
{
// Clustered drawing of bars:
double leftBarPosition = basePosition - (((double)numberOfBarCharts) / 2 - 0.5f) * barWidth - ((double)numberOfBarCharts - 1) / 2 * barWidth * effectiveBarGapWidth;
basePosition = leftBarPosition + currentClusterPosition * (barWidth + barWidth * effectiveBarGapWidth);
}
// Get bar bounding rectangle.
Point upperLeftCorner = new Point();
double width;
double height;
if (orientation == Orientation.Vertical)
{
// Base is X.
upperLeftCorner.X = basePosition - barWidth / 2;
upperLeftCorner.Y = Math.Min(dataPosition, baseLinePosition);
width = barWidth;
height = Math.Abs(dataPosition - baseLinePosition);
}
else
{
// Base is Y.
upperLeftCorner.X = Math.Min(dataPosition, baseLinePosition);
upperLeftCorner.Y = basePosition - barWidth / 2;
width = Math.Abs(dataPosition - baseLinePosition);
height = barWidth;
}
// Create the bar from the data template.
var bar = CreateDataPoint(data.DataContext ?? data);
if (bar == null)
{
return;
}
Canvas.SetLeft(bar, upperLeftCorner.X);
Canvas.SetTop(bar, upperLeftCorner.Y);
bar.Width = width;
bar.Height = height;
bar.Tag = Data[i].Point;
// Let derived classes change the appearance of the bar.
OnPrepareBar(i, data, bar);
Canvas.Children.Add(bar);
}
}
/// <summary>
/// creates a number using a digit and an order of magnitude
/// </summary>
/// <param name="orderOfMag"></param>
/// <param name="digit"></param>
/// <returns></returns>
public static IDigitNode GetDigitAtMagnitude(this INumeric thisNumber,
Numeric orderOfMag)
{
if (thisNumber == null)
throw new ArgumentNullException("thisNumber");
if (orderOfMag == null)
throw new ArgumentNullException("orderOfMag");
if (orderOfMag.IsEqualTo(orderOfMag.GetCompatibleZero()))
return thisNumber.ZerothDigit;
IDigitNode rv = null;
if (orderOfMag.IsPositive)
{
rv = thisNumber.ZerothDigit;
orderOfMag.PerformThisManyTimes(x =>
{
if (rv != null)
rv = rv.NextDigit();
});
}
else
{
rv = thisNumber.ZerothDigit;
orderOfMag.GetNegativeOf().PerformThisManyTimes(x =>
{
if (rv != null)
rv = rv.PreviousDigit();
});
}
return rv;
}
private List <DRMorphTargetContent> BuildMorphTargets(GeometryContent geometry, List <MeshContent> inputMorphTargets, int index)
{
int[] vertexReorderMap = _vertexReorderMaps[index];
var morphTargets = new List <DRMorphTargetContent>();
foreach (var inputMorphTarget in inputMorphTargets)
{
int numberOfVertices = geometry.Vertices.VertexCount;
var morphGeometry = inputMorphTarget.Geometry[index];
// Copy relative positions and normals into vertex buffer.
var positions = morphGeometry.Vertices.Positions;
var normals = morphGeometry.Vertices.Channels.Get <Vector3>(VertexChannelNames.Normal());
Vector3[] data = new Vector3[numberOfVertices * 2];
for (int i = 0; i < numberOfVertices; i++)
{
int originalIndex = vertexReorderMap[i];
data[2 * i] = positions[originalIndex];
data[2 * i + 1] = normals[originalIndex];
}
// Determine if morph target is empty.
bool isEmpty = true;
for (int i = 0; i < data.Length; i++)
{
// File formats and preprocessing can introduce some inaccuracies.
// --> Use a relative large epsilon. (The default Numeric.EpsilonF is too small.)
const float epsilon = 1e-4f;
if (!Numeric.IsZero(data[i].LengthSquared(), epsilon * epsilon))
{
Debug.Write(string.Format(
CultureInfo.InvariantCulture,
"Morph target \"{0}\", submesh index {1}: Position/normal delta is {2}.",
inputMorphTarget.Name, index, data[i].Length()));
isEmpty = false;
break;
}
}
if (!isEmpty)
{
// (Note: VertexStride is set explicitly in CreateMorphTargetVertexBuffer().)
// ReSharper disable once PossibleInvalidOperationException
int vertexOffset = _morphTargetVertexBuffer.VertexData.Length / _morphTargetVertexBuffer.VertexDeclaration.VertexStride.Value;
_morphTargetVertexBuffer.Write(
_morphTargetVertexBuffer.VertexData.Length,
12, // The size of one Vector3 in data is 12.
data);
morphTargets.Add(new DRMorphTargetContent
{
Name = inputMorphTarget.Name,
VertexBuffer = _morphTargetVertexBuffer,
StartVertex = vertexOffset,
});
}
}
return((morphTargets.Count > 0) ? morphTargets : null);
}
public static void SetDigitAtMagnitude(this INumeric thisNumber,
Numeric orderOfMag, string digit)
{
var dig = thisNumber.GetDigitAtMagnitude(orderOfMag);
dig.SetValue(digit);
}
private void ComputeTicks_FirstPass(double axisLength, double minDistance, List <double> majorTicks, List <double> minorTicks)
{
// Determine distance between large ticks.
bool shouldCullMiddle;
double majorTickStep = DetermineMajorTickStep(axisLength, minDistance, out shouldCullMiddle);
if (majorTickStep < 0.0)
{
throw new ChartException("Internal error in LinearScale: Tick distance is negative.");
}
// Determine starting position.
double first;
if (!Numeric.IsNaN(MajorTickAnchor))
{
first = MajorTickAnchor + Math.Ceiling((Min - MajorTickAnchor) / majorTickStep) * majorTickStep;
}
else
{
if (Min > 0.0)
{
double n = Math.Floor(Min / majorTickStep) + 1.0f;
first = n * majorTickStep;
}
else
{
double n = Math.Floor(-Min / majorTickStep) - 1.0f;
first = -n * majorTickStep;
}
// The above calculation misses the first tick, if it is exactly at Min.
if ((first - majorTickStep) >= Min)
{
first -= majorTickStep;
}
}
// Now make list of major tick positions.
majorTicks.Clear();
double position = first;
int safetyCount = 0;
while (position < Max && ++safetyCount < 5000)
{
majorTicks.Add(position);
position += majorTickStep;
// Clamp near zero-Values to zero, otherwise we could get a value like 5.553434e-17 instead of 0.
if (Math.Abs(majorTickStep) > 1e-7 && Math.Abs(position) < 1e-7) // Arbitrary epsilon value.
{
position = 0;
}
}
// The last value could be the Max limit + an epsilon. In this case we add a tick for the
// Max value.
if (Numeric.AreEqual(position, Max))
{
majorTicks.Add(Max);
}
// If the physical extent is too small, and the middle ticks should be turned into minor
// ticks, then do this now.
minorTicks.Clear();
if (shouldCullMiddle)
{
if (majorTicks.Count > 2)
{
for (int i = 1; i < majorTicks.Count - 1; ++i)
{
minorTicks.Add(majorTicks[i]);
}
}
var culledPositions = new List <double>
{
majorTicks[0],
majorTicks[majorTicks.Count - 1]
};
majorTicks.Clear();
foreach (double value in culledPositions)
{
majorTicks.Add(value);
}
}
}
public static void test_cholesky()
{
Console.WriteLine("\nTesting Cholesky(Matrix A) ...\n");
Numeric n = new Numeric();
List<double[]> list3 = new List<double[]>() { new double[] { 4, 2, 1 }, new double[] { 2, 9, 3 }, new double[] { 1, 3, 16 } };
Matrix A = Matrix.from_list(list3);
Matrix L = n.Cholesky(A);
Console.WriteLine("\n\tA: " + A.ToString());
Console.WriteLine("\n\tExpect: Cholesky(A) = [[2.0, 0, 0], [1.0, 2.8284271247461903, 0], [0.5, 0.88388347648318433, 3.8689468851355402]]");
Console.WriteLine("\t Result:Cholesky(A) = " + L.ToString());
}
private double DetermineMajorTickStep(double axisLength, double minDistance, out bool shouldCullMiddle)
{
shouldCullMiddle = false;
// If the major tick has been explicitly set, then return this.
if (!Numeric.IsNaN(MajorTickStep))
{
if (MajorTickStep <= 0.0f)
{
throw new ChartException("MajorTickStep must be greater than zero.");
}
return(MajorTickStep);
}
// Otherwise we need to calculate the major tick step ourselves.
// Adjust world max and min for offset and scale properties of axis.
double range = Max - Min;
// If axis has zero range, then return arbitrary number.
if (Numeric.AreEqual(Min, Max))
{
return(1.0f);
}
double approxTickStep = minDistance / axisLength * range;
double exponent = Math.Floor(Math.Log10(approxTickStep));
double mantissa = Math.Pow(10.0, Math.Log10(approxTickStep) - exponent);
// Determine next whole mantissa below the approx one.
int mantissaIndex = Mantissas.Length - 1;
for (int i = 1; i < Mantissas.Length; ++i)
{
if (mantissa < Mantissas[i])
{
mantissaIndex = i - 1;
break;
}
}
// Then choose next largest spacing.
mantissaIndex += 1;
if (mantissaIndex == Mantissas.Length)
{
mantissaIndex = 0;
exponent += 1.0;
}
// Now make sure that the returned value is such that at least two major tick marks will be
// displayed.
double tickStep = Math.Pow(10.0, exponent) * Mantissas[mantissaIndex];
double physicalStep = tickStep / range * axisLength;
while (physicalStep > axisLength / 2)
{
shouldCullMiddle = true;
mantissaIndex -= 1;
if (mantissaIndex == -1)
{
mantissaIndex = Mantissas.Length - 1;
exponent -= 1.0;
}
tickStep = Math.Pow(10.0, exponent) * Mantissas[mantissaIndex];
physicalStep = tickStep / range * axisLength;
}
// And we're done.
return(Math.Pow(10.0, exponent) * Mantissas[mantissaIndex]);
}
public static void test_is_almost_symmetric()
{
Console.WriteLine("\nTesting is_almost_symmetric() ...\n");
Numeric n = new Numeric();
Matrix A = Matrix.from_list(new List<double[]>() { new double[] { 1, 7, 3 }, new double[] { 7, 4, -5 }, new double[] { 3, -5, 6 } });
Console.WriteLine("\n\tA: " + A.ToString());
Console.WriteLine("\n\t\tA is_almost_symmetric (expect success): " + n.is_almost_symmetric(A));
Matrix B = Matrix.from_list(new List<double[]>() { new double[] { 1, 2 }, new double[] { 3, 4 } });
Console.WriteLine("\n\tB: " + B.ToString());
Console.WriteLine("\n\t\tB is_almost_symmetric (expect fail): " + n.is_almost_symmetric(B));
}
/// <inheritdoc/>
protected override Vector2F OnMeasure(Vector2F availableSize)
{
// Similar to UIControl.OnMeasure, but we sum up the desired sizes in the stack panel
// orientation. In the other direction we take the maximum of the children - unless a
// Width or Height was set explicitly. If there are VisualChildren that are not Children,
// they do not contribute to the DesiredSize.
float width = Width;
float height = Height;
bool hasWidth = Numeric.IsPositiveFinite(width);
bool hasHeight = Numeric.IsPositiveFinite(height);
if (hasWidth && width < availableSize.X)
{
availableSize.X = width;
}
if (hasHeight && height < availableSize.Y)
{
availableSize.Y = height;
}
Vector4 padding = Padding;
availableSize.X -= padding.X + padding.Z;
availableSize.Y -= padding.Y + padding.W;
foreach (var child in VisualChildren)
{
child.Measure(availableSize);
}
if (hasWidth && hasHeight)
{
return(new Vector2F(width, height));
}
Vector2F desiredSize = new Vector2F(width, height);
float maxWidth = 0;
float sumWidth = 0;
float maxHeight = 0;
float sumHeight = 0;
// Sum up widths and heights.
foreach (var child in Children)
{
float childWidth = child.DesiredWidth;
float childHeight = child.DesiredHeight;
maxWidth = Math.Max(maxWidth, childWidth);
maxHeight = Math.Max(maxHeight, childHeight);
sumWidth += childWidth;
sumHeight += childHeight;
}
if (!hasWidth)
{
if (Orientation == Orientation.Horizontal)
{
desiredSize.X = sumWidth;
}
else
{
desiredSize.X = maxWidth;
}
}
if (!hasHeight)
{
if (Orientation == Orientation.Vertical)
{
desiredSize.Y = sumHeight;
}
else
{
desiredSize.Y = maxHeight;
}
}
desiredSize.X += padding.X + padding.Z;
desiredSize.Y += padding.Y + padding.W;
return(desiredSize);
}
public static void test_is_positive_definite()
{
Console.WriteLine("\nTesting is_positive_definite(Matrix A) ...\n");
Numeric n = new Numeric();
List<double[]> list1 = new List<double[]>() { new double[] { 1, 2 }, new double[] { 2, 1 } }; //false
List<double[]> list2 = new List<double[]>() { new double[] { 2, -1, 0 }, new double[] { -1, 2, -1 }, new double[] { 0, -1, 2 } }; //true
Console.Write("\n\tExpect Fail: is_positive_definite(" + Matrix.from_list(list1) + ") = ");
Console.WriteLine(n.is_positive_definite(Matrix.from_list(list1)));
Console.WriteLine("\tExpect True: is_positive_definite(" + Matrix.from_list(list2) + ") = " + n.is_positive_definite(Matrix.from_list(list2)));
}
/// <summary>
/// multiplies 2 digits given their positions
/// </summary>
/// <param name="digit1"></param>
/// <param name="digit2"></param>
/// <param name="digit1Pos"></param>
/// <param name="digit2Pos"></param>
/// <returns></returns>
private Numeric MultiplyDigits(string digit1, string digit2,
Numeric digit1Pos, Numeric digit2Pos)
{
Debug.WriteLine("multiplying digits {0} and {1} at positions {2} and {3}",
digit1, digit2, digit1Pos.SymbolsText, digit2Pos.SymbolsText);
var val = this._multMap.Get(digit1, digit2);
Debug.WriteLine("{0} * {1} = {2}",
digit1, digit2, val.SymbolsText);
var rv = val.Clone().HasShift();
var number1 = Numeric.New(this.NumberSystem, digit1).HasShift();
var number2 = Numeric.New(this.NumberSystem, digit2).HasShift();
var counter = digit1Pos.HasAddition();
rv.ShiftRight(counter);
number1.ShiftRight(counter);
counter = digit2Pos.HasAddition();
rv.ShiftRight(counter);
number2.ShiftRight(counter);
Debug.WriteLine("equivalent to {0} * {1} = {2}",
number1.SymbolsText, number2.SymbolsText, rv.SymbolsText);
return rv.InnermostNumeric;
}