public override IEnumerable <SvgAttribute> GetAttributes()
{
var baseAttributes = base.GetAttributes();
if (baseAttributes != null)
{
foreach (var attr in baseAttributes)
{
yield return(attr);
}
}
var ci = CultureInfo.InvariantCulture;
yield return(new SvgAttribute("fit-to-path", null,
XmlNamespace.AurigmaVectorObjects,
() => FitToPath.ToString(ci),
v => FitToPath = SvgAttribute.ParseBooleanAttribute(v)
));
yield return(new SvgAttribute("stretch", null,
XmlNamespace.AurigmaVectorObjects,
() => Stretch.ToString(ci),
v => Stretch = SvgAttribute.ParseBooleanAttribute(v)
));
yield return(new SvgAttribute("original-font-size", "0",
XmlNamespace.AurigmaVectorObjects,
() => OriginalFontSize.ToString(ci),
v => OriginalFontSize = SvgAttribute.ParseFloatAttribute(v)
));
yield return(new SvgAttribute("fit-to-path-step", "1",
XmlNamespace.AurigmaVectorObjects,
() => FitToPathStep.ToString(ci),
v => FitToPathStep = SvgAttribute.ParseFloatAttribute(v)
));
yield return(new SvgAttribute("path-start", "0",
XmlNamespace.AurigmaVectorObjects,
() => PathStart.ToString(ci),
v => PathStart = SvgAttribute.ParseFloatAttribute(v)
));
yield return(new SvgAttribute("path-end", "1",
XmlNamespace.AurigmaVectorObjects,
() => PathEnd.ToString(ci),
v => PathEnd = SvgAttribute.ParseFloatAttribute(v)
));
}
/// <summary>
/// Creates between 1 and 5 Béziers curves from parameters specified like in WPF.
/// </summary>
public static List <XPoint> BezierCurveFromArc(XPoint point1, XPoint point2, XSize size,
double rotationAngle, bool isLargeArc, bool clockwise, PathStart pathStart)
{
// See also http://www.charlespetzold.com/blog/blog.xml from January 2, 2008:
// http://www.charlespetzold.com/blog/2008/01/Mathematics-of-ArcSegment.html
double δx = size.Width;
double δy = size.Height;
Debug.Assert(δx * δy > 0);
double factor = δy / δx;
bool isCounterclockwise = !clockwise;
// Adjust for different radii and rotation angle.
XMatrix matrix = new XMatrix();
matrix.RotateAppend(-rotationAngle);
matrix.ScaleAppend(δy / δx, 1);
XPoint pt1 = matrix.Transform(point1);
XPoint pt2 = matrix.Transform(point2);
// Get info about chord that connects both points.
XPoint midPoint = new XPoint((pt1.X + pt2.X) / 2, (pt1.Y + pt2.Y) / 2);
XVector vect = pt2 - pt1;
double halfChord = vect.Length / 2;
// Get vector from chord to center.
XVector vectRotated;
// (comparing two Booleans here!)
if (isLargeArc == isCounterclockwise)
{
vectRotated = new XVector(-vect.Y, vect.X);
}
else
{
vectRotated = new XVector(vect.Y, -vect.X);
}
vectRotated.Normalize();
// Distance from chord to center.
double centerDistance = Math.Sqrt(δy * δy - halfChord * halfChord);
if (double.IsNaN(centerDistance))
{
centerDistance = 0;
}
// Calculate center point.
XPoint center = midPoint + centerDistance * vectRotated;
// Get angles from center to the two points.
double α = Math.Atan2(pt1.Y - center.Y, pt1.X - center.X);
double β = Math.Atan2(pt2.Y - center.Y, pt2.X - center.X);
// (another comparison of two Booleans!)
if (isLargeArc == (Math.Abs(β - α) < Math.PI))
{
if (α < β)
{
α += 2 * Math.PI;
}
else
{
β += 2 * Math.PI;
}
}
// Invert matrix for final point calculation.
matrix.Invert();
double sweepAngle = β - α;
// Let the algorithm of GDI+ DrawArc to Bézier curves do the rest of the job
return(BezierCurveFromArc(center.X - δx * factor, center.Y - δy, 2 * δx * factor, 2 * δy,
α / Calc.Deg2Rad, sweepAngle / Calc.Deg2Rad, pathStart, ref matrix));
}
/// <summary>
/// Appends a Bézier curve for an arc within a full quadrant.
/// </summary>
static void AppendPartialArcQuadrant(List <XPoint> points, double x, double y, double width, double height, double α, double β, PathStart pathStart, XMatrix matrix)
{
Debug.Assert(α >= 0 && α <= 360);
Debug.Assert(β >= 0);
if (β > 360)
{
β = β - Math.Floor(β / 360) * 360;
}
Debug.Assert(Math.Abs(α - β) <= 90);
// Scanling factor.
double δx = width / 2;
double δy = height / 2;
// Center of ellipse.
double x0 = x + δx;
double y0 = y + δy;
// We have the following quarters:
// |
// 2 | 3
// ----+-----
// 1 | 0
// |
// If the angles lie in quarter 2 or 3, their values are subtracted by 180 and the
// resulting curve is reflected at the center. This algorithm works as expected (simply tried out).
// There may be a mathematically more elegant solution...
bool reflect = false;
if (α >= 180 && β >= 180)
{
α -= 180;
β -= 180;
reflect = true;
}
double cosα, cosβ, sinα, sinβ;
if (width == height)
{
// Circular arc needs no correction.
α = α * Calc.Deg2Rad;
β = β * Calc.Deg2Rad;
}
else
{
// Elliptic arc needs the angles to be adjusted such that the scaling transformation is compensated.
α = α * Calc.Deg2Rad;
sinα = Math.Sin(α);
if (Math.Abs(sinα) > 1E-10)
{
α = Math.PI / 2 - Math.Atan(δy * Math.Cos(α) / (δx * sinα));
}
β = β * Calc.Deg2Rad;
sinβ = Math.Sin(β);
if (Math.Abs(sinβ) > 1E-10)
{
β = Math.PI / 2 - Math.Atan(δy * Math.Cos(β) / (δx * sinβ));
}
}
double κ = 4 * (1 - Math.Cos((α - β) / 2)) / (3 * Math.Sin((β - α) / 2));
sinα = Math.Sin(α);
cosα = Math.Cos(α);
sinβ = Math.Sin(β);
cosβ = Math.Cos(β);
//XPoint pt1, pt2, pt3;
if (!reflect)
{
// Calculation for quarter 0 and 1.
switch (pathStart)
{
case PathStart.MoveTo1st:
points.Add(matrix.Transform(new XPoint(x0 + δx * cosα, y0 + δy * sinα)));
break;
case PathStart.LineTo1st:
points.Add(matrix.Transform(new XPoint(x0 + δx * cosα, y0 + δy * sinα)));
break;
case PathStart.Ignore1st:
break;
}
points.Add(matrix.Transform(new XPoint(x0 + δx * (cosα - κ * sinα), y0 + δy * (sinα + κ * cosα))));
points.Add(matrix.Transform(new XPoint(x0 + δx * (cosβ + κ * sinβ), y0 + δy * (sinβ - κ * cosβ))));
points.Add(matrix.Transform(new XPoint(x0 + δx * cosβ, y0 + δy * sinβ)));
}
else
{
// Calculation for quarter 2 and 3.
switch (pathStart)
{
case PathStart.MoveTo1st:
points.Add(matrix.Transform(new XPoint(x0 - δx * cosα, y0 - δy * sinα)));
break;
case PathStart.LineTo1st:
points.Add(matrix.Transform(new XPoint(x0 - δx * cosα, y0 - δy * sinα)));
break;
case PathStart.Ignore1st:
break;
}
points.Add(matrix.Transform(new XPoint(x0 - δx * (cosα - κ * sinα), y0 - δy * (sinα + κ * cosα))));
points.Add(matrix.Transform(new XPoint(x0 - δx * (cosβ + κ * sinβ), y0 - δy * (sinβ - κ * cosβ))));
points.Add(matrix.Transform(new XPoint(x0 - δx * cosβ, y0 - δy * sinβ)));
}
}
/// <summary>
/// Creates between 1 and 5 Béziers curves from parameters specified like in GDI+.
/// </summary>
public static List <XPoint> BezierCurveFromArc(double x, double y, double width, double height, double startAngle, double sweepAngle,
PathStart pathStart, ref XMatrix matrix)
{
List <XPoint> points = new List <XPoint>();
// Normalize the angles.
double α = startAngle;
if (α < 0)
{
α = α + (1 + Math.Floor((Math.Abs(α) / 360))) * 360;
}
else if (α > 360)
{
α = α - Math.Floor(α / 360) * 360;
}
Debug.Assert(α >= 0 && α <= 360);
double β = sweepAngle;
if (β < -360)
{
β = -360;
}
else if (β > 360)
{
β = 360;
}
if (α == 0 && β < 0)
{
α = 360;
}
else if (α == 360 && β > 0)
{
α = 0;
}
// Is it possible that the arc is small starts and ends in same quadrant?
bool smallAngle = Math.Abs(β) <= 90;
β = α + β;
if (β < 0)
{
β = β + (1 + Math.Floor((Math.Abs(β) / 360))) * 360;
}
bool clockwise = sweepAngle > 0;
int startQuadrant = Quadrant(α, true, clockwise);
int endQuadrant = Quadrant(β, false, clockwise);
if (startQuadrant == endQuadrant && smallAngle)
{
AppendPartialArcQuadrant(points, x, y, width, height, α, β, pathStart, matrix);
}
else
{
int currentQuadrant = startQuadrant;
bool firstLoop = true;
while (true)
{
if (currentQuadrant == startQuadrant && firstLoop)
{
double ξ = currentQuadrant * 90 + (clockwise ? 90 : 0);
AppendPartialArcQuadrant(points, x, y, width, height, α, ξ, pathStart, matrix);
}
else if (currentQuadrant == endQuadrant)
{
double ξ = currentQuadrant * 90 + (clockwise ? 0 : 90);
AppendPartialArcQuadrant(points, x, y, width, height, ξ, β, PathStart.Ignore1st, matrix);
}
else
{
double ξ1 = currentQuadrant * 90 + (clockwise ? 0 : 90);
double ξ2 = currentQuadrant * 90 + (clockwise ? 90 : 0);
AppendPartialArcQuadrant(points, x, y, width, height, ξ1, ξ2, PathStart.Ignore1st, matrix);
}
// Don't stop immediately if arc is greater than 270 degrees.
if (currentQuadrant == endQuadrant && smallAngle)
{
break;
}
smallAngle = true;
if (clockwise)
{
currentQuadrant = currentQuadrant == 3 ? 0 : currentQuadrant + 1;
}
else
{
currentQuadrant = currentQuadrant == 0 ? 3 : currentQuadrant - 1;
}
firstLoop = false;
}
}
return(points);
}
/// <summary>
/// Evaluates a Zero or More Path
/// </summary>
/// <param name="context">Evaluation Context</param>
/// <returns></returns>
public override BaseMultiset Evaluate(SparqlEvaluationContext context)
{
List <List <INode> > paths = new List <List <INode> >();
BaseMultiset initialInput = context.InputMultiset;
int step = 0, prevCount = 0, skipCount = 0;
String subjVar = PathStart.VariableName;
String objVar = PathEnd.VariableName;
bool bothTerms = (subjVar == null && objVar == null);
bool reverse = false;
if (subjVar == null || (context.InputMultiset.ContainsVariable(subjVar)))
{
// Work Forwards from the Starting Term or Bound Variable
// OR if there is no Ending Term or Bound Variable work forwards regardless
if (subjVar == null)
{
paths.Add(((NodeMatchPattern)PathStart).Node.AsEnumerable().ToList());
}
else if (context.InputMultiset.ContainsVariable(subjVar))
{
paths.AddRange((from s in context.InputMultiset.Sets
where s[subjVar] != null
select s[subjVar]).Distinct().Select(n => n.AsEnumerable().ToList()));
}
}
else if (objVar == null || (context.InputMultiset.ContainsVariable(objVar)))
{
// Work Backwards from Ending Term or Bound Variable
if (objVar == null)
{
paths.Add(((NodeMatchPattern)PathEnd).Node.AsEnumerable().ToList());
}
else
{
paths.AddRange((from s in context.InputMultiset.Sets
where s[objVar] != null
select s[objVar]).Distinct().Select(n => n.AsEnumerable().ToList()));
}
reverse = true;
}
if (paths.Count == 0)
{
GetPathStarts(context, paths, reverse);
}
// Traverse the Paths
do
{
prevCount = paths.Count;
foreach (List <INode> path in paths.Skip(skipCount).ToList())
{
foreach (INode nextStep in EvaluateStep(context, path, reverse))
{
List <INode> newPath = new List <INode>(path);
newPath.Add(nextStep);
paths.Add(newPath);
}
}
// Update Counts
// skipCount is used to indicate the paths which we will ignore for the purposes of
// trying to further extend since we've already done them once
step++;
if (paths.Count == 0)
{
break;
}
skipCount = prevCount;
// Can short circuit evaluation here if both are terms and any path is acceptable
if (bothTerms)
{
bool exit = false;
foreach (List <INode> path in paths)
{
if (reverse)
{
if (PathEnd.Accepts(context, path[0]) && PathStart.Accepts(context, path[path.Count - 1]))
{
exit = true;
break;
}
}
else
{
if (PathStart.Accepts(context, path[0]) && PathEnd.Accepts(context, path[path.Count - 1]))
{
exit = true;
break;
}
}
}
if (exit)
{
break;
}
}
} while (paths.Count > prevCount || (step == 1 && paths.Count == prevCount));
if (paths.Count == 0)
{
// If all path starts lead nowhere then we get the Null Multiset as a result
context.OutputMultiset = new NullMultiset();
}
else
{
context.OutputMultiset = new Multiset();
// Evaluate the Paths to check that are acceptable
HashSet <ISet> returnedPaths = new HashSet <ISet>();
foreach (List <INode> path in paths)
{
if (reverse)
{
if (PathEnd.Accepts(context, path[0]) && PathStart.Accepts(context, path[path.Count - 1]))
{
Set s = new Set();
if (!bothTerms)
{
if (subjVar != null)
{
s.Add(subjVar, path[path.Count - 1]);
}
if (objVar != null)
{
s.Add(objVar, path[0]);
}
}
// Make sure to check for uniqueness
if (returnedPaths.Contains(s))
{
continue;
}
context.OutputMultiset.Add(s);
returnedPaths.Add(s);
// If both are terms can short circuit evaluation here
// It is sufficient just to determine that there is one path possible
if (bothTerms)
{
break;
}
}
}
else
{
if (PathStart.Accepts(context, path[0]) && PathEnd.Accepts(context, path[path.Count - 1]))
{
Set s = new Set();
if (!bothTerms)
{
if (subjVar != null)
{
s.Add(subjVar, path[0]);
}
if (objVar != null)
{
s.Add(objVar, path[path.Count - 1]);
}
}
// Make sure to check for uniqueness
if (returnedPaths.Contains(s))
{
continue;
}
context.OutputMultiset.Add(s);
returnedPaths.Add(s);
// If both are terms can short circuit evaluation here
// It is sufficient just to determine that there is one path possible
if (bothTerms)
{
break;
}
}
}
}
// Now add the zero length paths into
IEnumerable <INode> nodes;
if (subjVar != null)
{
if (objVar != null)
{
nodes = (from s in context.OutputMultiset.Sets
where s[subjVar] != null
select s[subjVar]).Concat(from s in context.OutputMultiset.Sets
where s[objVar] != null
select s[objVar]).Distinct();
}
else
{
nodes = (from s in context.OutputMultiset.Sets
where s[subjVar] != null
select s[subjVar]).Distinct();
}
}
else if (objVar != null)
{
nodes = (from s in context.OutputMultiset.Sets
where s[objVar] != null
select s[objVar]).Distinct();
}
else
{
nodes = Enumerable.Empty <INode>();
}
if (bothTerms)
{
// If both were terms transform to an Identity/Null Multiset as appropriate
if (context.OutputMultiset.IsEmpty)
{
context.OutputMultiset = new NullMultiset();
}
else
{
context.OutputMultiset = new IdentityMultiset();
}
}
// Then union in the zero length paths
context.InputMultiset = initialInput;
ZeroLengthPath zeroPath = new ZeroLengthPath(PathStart, PathEnd, Path);
BaseMultiset currResults = context.OutputMultiset;
context.OutputMultiset = new Multiset();
BaseMultiset results = context.Evaluate(zeroPath);//zeroPath.Evaluate(context);
context.OutputMultiset = currResults;
foreach (ISet s in results.Sets)
{
if (!context.OutputMultiset.Sets.Contains(s))
{
context.OutputMultiset.Add(s.Copy());
}
}
}
context.InputMultiset = initialInput;
return(context.OutputMultiset);
}
/// <summary>
/// Gets the String representation of the Algebra
/// </summary>
/// <returns></returns>
public override string ToString()
{
return("ZeroOrMorePath(" + PathStart.ToString() + ", " + Path.ToString() + ", " + PathEnd.ToString() + ")");
}
/// <summary>
/// Creates between 1 and 5 Béziers curves from parameters specified like in WPF.
/// </summary>
public static List<XPoint> BezierCurveFromArc(XPoint point1, XPoint point2, XSize size,
double rotationAngle, bool isLargeArc, bool clockwise, PathStart pathStart)
{
// See also http://www.charlespetzold.com/blog/blog.xml from January 2, 2008:
// http://www.charlespetzold.com/blog/2008/01/Mathematics-of-ArcSegment.html
double δx = size.Width;
double δy = size.Height;
Debug.Assert(δx * δy > 0);
double factor = δy / δx;
bool isCounterclockwise = !clockwise;
// Adjust for different radii and rotation angle.
XMatrix matrix = new XMatrix();
matrix.RotateAppend(-rotationAngle);
matrix.ScaleAppend(δy / δx, 1);
XPoint pt1 = matrix.Transform(point1);
XPoint pt2 = matrix.Transform(point2);
// Get info about chord that connects both points.
XPoint midPoint = new XPoint((pt1.X + pt2.X) / 2, (pt1.Y + pt2.Y) / 2);
XVector vect = pt2 - pt1;
double halfChord = vect.Length / 2;
// Get vector from chord to center.
XVector vectRotated;
// (comparing two Booleans here!)
if (isLargeArc == isCounterclockwise)
vectRotated = new XVector(-vect.Y, vect.X);
else
vectRotated = new XVector(vect.Y, -vect.X);
vectRotated.Normalize();
// Distance from chord to center.
double centerDistance = Math.Sqrt(δy * δy - halfChord * halfChord);
if (double.IsNaN(centerDistance))
centerDistance = 0;
// Calculate center point.
XPoint center = midPoint + centerDistance * vectRotated;
// Get angles from center to the two points.
double α = Math.Atan2(pt1.Y - center.Y, pt1.X - center.X);
double β = Math.Atan2(pt2.Y - center.Y, pt2.X - center.X);
// (another comparison of two Booleans!)
if (isLargeArc == (Math.Abs(β - α) < Math.PI))
{
if (α < β)
α += 2 * Math.PI;
else
β += 2 * Math.PI;
}
// Invert matrix for final point calculation.
matrix.Invert();
double sweepAngle = β - α;
// Let the algorithm of GDI+ DrawArc to Bézier curves do the rest of the job
return BezierCurveFromArc(center.X - δx * factor, center.Y - δy, 2 * δx * factor, 2 * δy,
α / Calc.Deg2Rad, sweepAngle / Calc.Deg2Rad, pathStart, ref matrix);
}
/// <summary>
/// Appends a Bézier curve for an arc within a full quadrant.
/// </summary>
static void AppendPartialArcQuadrant(List<XPoint> points, double x, double y, double width, double height, double α, double β, PathStart pathStart, XMatrix matrix)
{
Debug.Assert(α >= 0 && α <= 360);
Debug.Assert(β >= 0);
if (β > 360)
β = β - Math.Floor(β / 360) * 360;
Debug.Assert(Math.Abs(α - β) <= 90);
// Scanling factor.
double δx = width / 2;
double δy = height / 2;
// Center of ellipse.
double x0 = x + δx;
double y0 = y + δy;
// We have the following quarters:
// |
// 2 | 3
// ----+-----
// 1 | 0
// |
// If the angles lie in quarter 2 or 3, their values are subtracted by 180 and the
// resulting curve is reflected at the center. This algorithm works as expected (simply tried out).
// There may be a mathematically more elegant solution...
bool reflect = false;
if (α >= 180 && β >= 180)
{
α -= 180;
β -= 180;
reflect = true;
}
double cosα, cosβ, sinα, sinβ;
if (width == height)
{
// Circular arc needs no correction.
α = α * Calc.Deg2Rad;
β = β * Calc.Deg2Rad;
}
else
{
// Elliptic arc needs the angles to be adjusted such that the scaling transformation is compensated.
α = α * Calc.Deg2Rad;
sinα = Math.Sin(α);
if (Math.Abs(sinα) > 1E-10)
α = Math.PI / 2 - Math.Atan(δy * Math.Cos(α) / (δx * sinα));
β = β * Calc.Deg2Rad;
sinβ = Math.Sin(β);
if (Math.Abs(sinβ) > 1E-10)
β = Math.PI / 2 - Math.Atan(δy * Math.Cos(β) / (δx * sinβ));
}
double κ = 4 * (1 - Math.Cos((α - β) / 2)) / (3 * Math.Sin((β - α) / 2));
sinα = Math.Sin(α);
cosα = Math.Cos(α);
sinβ = Math.Sin(β);
cosβ = Math.Cos(β);
//XPoint pt1, pt2, pt3;
if (!reflect)
{
// Calculation for quarter 0 and 1.
switch (pathStart)
{
case PathStart.MoveTo1st:
points.Add(matrix.Transform(new XPoint(x0 + δx * cosα, y0 + δy * sinα)));
break;
case PathStart.LineTo1st:
points.Add(matrix.Transform(new XPoint(x0 + δx * cosα, y0 + δy * sinα)));
break;
case PathStart.Ignore1st:
break;
}
points.Add(matrix.Transform(new XPoint(x0 + δx * (cosα - κ * sinα), y0 + δy * (sinα + κ * cosα))));
points.Add(matrix.Transform(new XPoint(x0 + δx * (cosβ + κ * sinβ), y0 + δy * (sinβ - κ * cosβ))));
points.Add(matrix.Transform(new XPoint(x0 + δx * cosβ, y0 + δy * sinβ)));
}
else
{
// Calculation for quarter 2 and 3.
switch (pathStart)
{
case PathStart.MoveTo1st:
points.Add(matrix.Transform(new XPoint(x0 - δx * cosα, y0 - δy * sinα)));
break;
case PathStart.LineTo1st:
points.Add(matrix.Transform(new XPoint(x0 - δx * cosα, y0 - δy * sinα)));
break;
case PathStart.Ignore1st:
break;
}
points.Add(matrix.Transform(new XPoint(x0 - δx * (cosα - κ * sinα), y0 - δy * (sinα + κ * cosα))));
points.Add(matrix.Transform(new XPoint(x0 - δx * (cosβ + κ * sinβ), y0 - δy * (sinβ - κ * cosβ))));
points.Add(matrix.Transform(new XPoint(x0 - δx * cosβ, y0 - δy * sinβ)));
}
}
/// <summary>
/// Creates between 1 and 5 Béziers curves from parameters specified like in GDI+.
/// </summary>
public static List<XPoint> BezierCurveFromArc(double x, double y, double width, double height, double startAngle, double sweepAngle,
PathStart pathStart, ref XMatrix matrix)
{
List<XPoint> points = new List<XPoint>();
// Normalize the angles.
double α = startAngle;
if (α < 0)
α = α + (1 + Math.Floor((Math.Abs(α) / 360))) * 360;
else if (α > 360)
α = α - Math.Floor(α / 360) * 360;
Debug.Assert(α >= 0 && α <= 360);
double β = sweepAngle;
if (β < -360)
β = -360;
else if (β > 360)
β = 360;
if (α == 0 && β < 0)
α = 360;
else if (α == 360 && β > 0)
α = 0;
// Is it possible that the arc is small starts and ends in same quadrant?
bool smallAngle = Math.Abs(β) <= 90;
β = α + β;
if (β < 0)
β = β + (1 + Math.Floor((Math.Abs(β) / 360))) * 360;
bool clockwise = sweepAngle > 0;
int startQuadrant = Quadrant(α, true, clockwise);
int endQuadrant = Quadrant(β, false, clockwise);
if (startQuadrant == endQuadrant && smallAngle)
AppendPartialArcQuadrant(points, x, y, width, height, α, β, pathStart, matrix);
else
{
int currentQuadrant = startQuadrant;
bool firstLoop = true;
do
{
if (currentQuadrant == startQuadrant && firstLoop)
{
double ξ = currentQuadrant * 90 + (clockwise ? 90 : 0);
AppendPartialArcQuadrant(points, x, y, width, height, α, ξ, pathStart, matrix);
}
else if (currentQuadrant == endQuadrant)
{
double ξ = currentQuadrant * 90 + (clockwise ? 0 : 90);
AppendPartialArcQuadrant(points, x, y, width, height, ξ, β, PathStart.Ignore1st, matrix);
}
else
{
double ξ1 = currentQuadrant * 90 + (clockwise ? 0 : 90);
double ξ2 = currentQuadrant * 90 + (clockwise ? 90 : 0);
AppendPartialArcQuadrant(points, x, y, width, height, ξ1, ξ2, PathStart.Ignore1st, matrix);
}
// Don't stop immediately if arc is greater than 270 degrees.
if (currentQuadrant == endQuadrant && smallAngle)
break;
smallAngle = true;
if (clockwise)
currentQuadrant = currentQuadrant == 3 ? 0 : currentQuadrant + 1;
else
currentQuadrant = currentQuadrant == 0 ? 3 : currentQuadrant - 1;
firstLoop = false;
} while (true);
}
return points;
}
void AppendPartialArc(System.Windows.Point point1, System.Windows.Point point2, double rotationAngle,
System.Windows.Size size, bool isLargeArc, System.Windows.Media.SweepDirection sweepDirection, PathStart pathStart)
{
#if true
//AppendPartialArc(currentPoint, seg.Point, seg.RotationAngle, seg.Size, seg.IsLargeArc, seg.SweepDirection, PathStart.Ignore1st);
int pieces;
PointCollection points = GeometryHelper.ArcToBezier(point1.X, point1.Y, size.Width, size.Height, rotationAngle, isLargeArc,
sweepDirection == SweepDirection.Clockwise, point2.X, point2.Y, out pieces);
int count = points.Count;
int start = count % 3 == 1 ? 1 : 0;
if (start == 1)
AppendFormat("{0:0.####} {1:0.####} m\n", points[0].X, points[0].Y);
for (int idx = start; idx < count; idx += 3)
AppendFormat("{0:0.####} {1:0.####} {2:0.####} {3:0.####} {4:0.####} {5:0.####} c\n",
points[idx].X, points[idx].Y,
points[idx + 1].X, points[idx + 1].Y,
points[idx + 2].X, points[idx + 2].Y);
#else
List<XPoint> points = GeometryHelper.BezierCurveFromArc((XPoint)point1, (XPoint)point2, rotationAngle, (XSize)size,
isLargeArc, sweepDirection == SweepDirection.Clockwise, pathStart);
int count = points.Count;
int start = count % 3 == 1 ? 1 : 0;
if (start == 1)
AppendFormat("{0:0.####} {1:0.####} m\n", points[0].X, points[0].Y);
for (int idx = start; idx < count; idx += 3)
AppendFormat("{0:0.####} {1:0.####} {2:0.####} {3:0.####} {4:0.####} {5:0.####} c\n",
points[idx].X, points[idx].Y,
points[idx + 1].X, points[idx + 1].Y,
points[idx + 2].X, points[idx + 2].Y);
#endif
}
// Use this for initialization
void Start()
{
// get the path manager
WaveManager = GameObject.Find("PathPoint (0)").GetComponent <PathStart>();
}
/// <summary>
/// Evaluates a Zero Length Path.
/// </summary>
/// <param name="context">Evaluation Context.</param>
/// <returns></returns>
public override BaseMultiset Evaluate(SparqlEvaluationContext context)
{
if (AreBothTerms())
{
if (AreSameTerms())
{
return(new IdentityMultiset());
}
else
{
return(new NullMultiset());
}
}
String subjVar = PathStart.VariableName;
String objVar = PathEnd.VariableName;
context.OutputMultiset = new Multiset();
// Determine the Triples to which this applies
if (subjVar != null)
{
// Subject is a Variable
if (context.InputMultiset.ContainsVariable(subjVar))
{
// Subject is Bound
if (objVar != null)
{
// Object is a Variable
if (context.InputMultiset.ContainsVariable(objVar))
{
// Both Subject and Object are Bound
foreach (ISet s in context.InputMultiset.Sets.Where(x => x[subjVar] != null && x[objVar] != null && PathStart.Accepts(context, x[subjVar]) && PathEnd.Accepts(context, x[objVar])))
{
ISet x = new Set();
x.Add(subjVar, x[subjVar]);
context.OutputMultiset.Add(x);
x = new Set();
x.Add(objVar, x[objVar]);
context.OutputMultiset.Add(x);
}
}
else
{
// Subject is bound but Object is Unbound
foreach (ISet s in context.InputMultiset.Sets.Where(x => x[subjVar] != null && PathStart.Accepts(context, x[subjVar])))
{
ISet x = s.Copy();
x.Add(objVar, x[subjVar]);
context.OutputMultiset.Add(x);
}
}
}
else
{
// Object is a Term
// Preseve sets where the Object Term is equal to the currently bound Subject
INode objTerm = ((NodeMatchPattern)PathEnd).Node;
foreach (ISet s in context.InputMultiset.Sets)
{
INode temp = s[subjVar];
if (temp != null && temp.Equals(objTerm))
{
context.OutputMultiset.Add(s.Copy());
}
}
}
}
else
{
// Subject is Unbound
if (objVar != null)
{
// Object is a Variable
if (context.InputMultiset.ContainsVariable(objVar))
{
// Object is Bound but Subject is unbound
foreach (ISet s in context.InputMultiset.Sets.Where(x => x[objVar] != null && PathEnd.Accepts(context, x[objVar])))
{
ISet x = s.Copy();
x.Add(subjVar, x[objVar]);
context.OutputMultiset.Add(x);
}
}
else
{
// Subject and Object are Unbound
HashSet <INode> nodes = new HashSet <INode>();
foreach (Triple t in context.Data.Triples)
{
nodes.Add(t.Subject);
nodes.Add(t.Object);
}
foreach (INode n in nodes)
{
Set s = new Set();
s.Add(subjVar, n);
s.Add(objVar, n);
context.OutputMultiset.Add(s);
}
}
}
else
{
// Object is a Term
// Create a single set with the Variable bound to the Object Term
Set s = new Set();
s.Add(subjVar, ((NodeMatchPattern)PathEnd).Node);
context.OutputMultiset.Add(s);
}
}
}
else if (objVar != null)
{
// Subject is a Term but Object is a Variable
if (context.InputMultiset.ContainsVariable(objVar))
{
// Object is Bound
// Preseve sets where the Subject Term is equal to the currently bound Object
INode subjTerm = ((NodeMatchPattern)PathStart).Node;
foreach (ISet s in context.InputMultiset.Sets)
{
INode temp = s[objVar];
if (temp != null && temp.Equals(subjTerm))
{
context.OutputMultiset.Add(s.Copy());
}
}
}
else
{
// Object is Unbound
// Create a single set with the Variable bound to the Suject Term
Set s = new Set();
s.Add(objVar, ((NodeMatchPattern)PathStart).Node);
context.OutputMultiset.Add(s);
}
}
else
{
// Should already have dealt with this earlier (the AreBothTerms() and AreSameTerms() branch)
throw new RdfQueryException("Reached unexpected point of ZeroLengthPath evaluation");
}
return(context.OutputMultiset);
}
// Use this for initialization
void Start()
{
// set the model as a random model in the inputed list
GetComponent <MeshFilter>().mesh = models[Random.Range(0, models.Count)];
WaveManager = GameObject.Find("PathPoint (0)").GetComponent <PathStart>();
}
void AppendPartialArc(SysPoint point1, SysPoint point2, double rotationAngle,
SysSize size, bool isLargeArc, SweepDirection sweepDirection, PathStart pathStart)
{
const string format = Config.SignificantFigures4;
Debug.Assert(pathStart == PathStart.Ignore1st);
int pieces;
PointCollection points = GeometryHelper.ArcToBezier(point1.X, point1.Y, size.Width, size.Height, rotationAngle, isLargeArc,
sweepDirection == SweepDirection.Clockwise, point2.X, point2.Y, out pieces);
int count = points.Count;
int start = count % 3 == 1 ? 1 : 0;
if (start == 1)
AppendFormatPoint("{0:" + format + "} {1:" + format + "} m\n", points[0].X, points[0].Y);
for (int idx = start; idx < count; idx += 3)
AppendFormat3Points("{0:" + format + "} {1:" + format + "} {2:" + format + "} {3:" + format + "} {4:" + format + "} {5:" + format + "} c\n",
points[idx].X, points[idx].Y,
points[idx + 1].X, points[idx + 1].Y,
points[idx + 2].X, points[idx + 2].Y);
}
void AppendPartialArc(System.Windows.Point point1, System.Windows.Point point2, double rotationAngle,
System.Windows.Size size, bool isLargeArc, System.Windows.Media.SweepDirection sweepDirection, PathStart pathStart)
{
List<XPoint> points = GeometryHelper.BezierCurveFromArc((XPoint)point1, (XPoint)point2, rotationAngle, (XSize)size,
isLargeArc, sweepDirection == SweepDirection.Clockwise, pathStart);
int count = points.Count;
int start = count % 3 == 1 ? 1 : 0;
if (start == 1)
AppendFormat("{0:0.####} {1:0.####} m\n", points[0].X, points[0].Y);
for (int idx = start; idx < count; idx += 3)
AppendFormat("{0:0.####} {1:0.####} {2:0.####} {3:0.####} {4:0.####} {5:0.####} c\n",
points[idx].X, points[idx].Y,
points[idx + 1].X, points[idx + 1].Y,
points[idx + 2].X, points[idx + 2].Y);
}
public void OnGUI()
{
#region UIRendering
//load the gui skin
GUI.skin = skin;
int ResolutionWidth = Screen.width;
int ResolutionHeight = Screen.height;
PathStart WaveManager = GameObject.Find("PathPoint (0)").GetComponent <PathStart>();
//draw the tower selection grid
int boxNumber = ((Screen.height - 315) / 100) * 2;
List <GUIContent> TowerSelectionGrid = new List <GUIContent>();
for (int i = towerPage * boxNumber; i < Towers.Count && i < boxNumber + towerPage * boxNumber; i++)
{
TowerSelectionGrid.Add(new GUIContent(Towers[i].Name + "\n<size=16>cost:" + Towers[i].TowerObject.GetComponent <Tower>().getCost() + "</size>", Towers[i].GuiTexture == null ? NoTowerImage : Towers[i].GuiTexture));
}
for (int i = TowerSelectionGrid.Count; i < boxNumber; i++)
{
TowerSelectionGrid.Add(new GUIContent(""));
}
//draw the box for money and health;
GUI.Box(new Rect(ResolutionWidth - 200, 0, 200, 100), new GUIContent("Health:" + GameObject.FindGameObjectWithTag("ProtectedObject").GetComponent <ProtectedObject>().health
+ "\n Money:" + money + "\n Score:" + PathManager.Score));
selectorGrid = GUI.SelectionGrid(new Rect(ResolutionWidth - 200, 105, 200, ResolutionHeight - 315), selectorGrid, TowerSelectionGrid.ToArray(), 2);
//draw the next button for tower page
if (towerPage == TowerPageMax)
{
GUI.Box(new Rect(ResolutionWidth - 98, ResolutionHeight - 205, 98, 100), new GUIContent("<color=#808080ff>next</color>"));
}
else
if (GUI.Button(new Rect(ResolutionWidth - 98, ResolutionHeight - 205, 98, 100), new GUIContent("next")))
{
towerPage += 1;
}
//draw the previous button for tower page
if (towerPage == 0)
{
GUI.Box(new Rect(ResolutionWidth - 200, ResolutionHeight - 205, 98, 100), new GUIContent("<color=#808080ff>Previous</color>"));
}
else
if (GUI.Button(new Rect(ResolutionWidth - 200, ResolutionHeight - 205, 98, 100), new GUIContent("Previous")))
{
towerPage -= 1;
}
//check if the player can go to the next wave
if (WaveManager.CanNextWave)
{
//check if the level is finished
if (WaveManager.isFinalWave)
{
// create finished texture
GUIStyle OuterBox = new GUIStyle(GUI.skin.box);
Texture2D texture = new Texture2D(1, 1);
texture.SetPixel(0, 0, Color.white);
texture.Apply();
OuterBox.normal.background = texture;
//display finished message and the button to end the game
GUI.Label(new Rect(ResolutionWidth / 2 - 500, ResolutionHeight / 2 - 100, 500, 150), "", OuterBox);
GUI.Label(new Rect(ResolutionWidth / 2 - 500, ResolutionHeight / 2 - 100, 500, 150), new GUIContent("<size=128><color=Black>Great Job</color></size>"));
if (GUI.Button(new Rect(ResolutionWidth - 200, ResolutionHeight - 100, 200, 100), new GUIContent("Exit to Main Menu")))
{
PlayerPrefs.SetInt("level:" + UnityEngine.SceneManagement.SceneManager.GetActiveScene().buildIndex, (int)PathManager.Score);
UnityEngine.SceneManagement.SceneManager.LoadScene(0);
}
}
//otherwise show a button to go to next level
else if (GUI.Button(new Rect(ResolutionWidth - 200, ResolutionHeight - 100, 200, 100), new GUIContent("Next Wave" + WaveManager.TimeToNextWave)))
{
WaveManager.nextWave();
}
}
else
{
GUI.Box(new Rect(ResolutionWidth - 200, ResolutionHeight - 100, 200, 100), new GUIContent("Wave In Progress"));
}
//show options button
if (GUI.Button(new Rect(8, ResolutionHeight - 40, 32, 32), GearSymbol))
{
Options = !Options;
}
//show music button
if (GUI.Button(new Rect(48, ResolutionHeight - 40, 32, 32), music ? MusicSymbol : NoMusicSymbol))
{
music = !music;
PlayerPrefs.SetInt("music", music ? 1 : 0);
AudioListener.volume = music ? 1 : 0;
}
#endregion
#region UIControls
//move camera around
if (Input.GetAxis("Mouse ScrollWheel") < 0 || Input.GetAxis("Mouse ScrollWheel") > 0 && Camera.main != null)
{
Camera.main.orthographicSize = Mathf.Max(Mathf.Min(-8 * scrollSpeed * Input.GetAxis("Mouse ScrollWheel") + Camera.main.orthographicSize, 50), 5);
}
//if user presses e open the options menu
if (Input.GetKeyDown(KeyCode.Escape) & Time.unscaledTime - buttonTime > .5f)
{
Options = !Options;
buttonTime = Time.unscaledTime;
}
//show options menu
if (Options)
{
//draw options box
Rect OptionsBox = new Rect((ResolutionWidth - 200) / 2, (ResolutionHeight - 132) / 2, 200, 152);
GUI.Box(OptionsBox, "");
//draw the quit buttons
if (GUI.Button(new Rect(OptionsBox.xMin + (OptionsBox.width - 150) / 2, OptionsBox.yMin + 16, 150, 50), "Quit To Windows"))
{
Application.Quit();
}
if (GUI.Button(new Rect(OptionsBox.xMin + (OptionsBox.width - 150) / 2, OptionsBox.yMin + 66, 150, 50), "Quit To Main Menu"))
{
UnityEngine.SceneManagement.SceneManager.LoadScene(0);
}
hardness = !GUI.Toggle(new Rect(OptionsBox.xMin + (OptionsBox.width - 150) / 2, OptionsBox.yMin + 116, 150, 50), hardness, "Hard Mode");
PlayerPrefs.SetInt("Hardness", hardness?1:0);
}
//show the diologue for selling towers
else if (ThingToSell != null)
{
//convert 3d point to 2d screen position
Vector3 screenPosition = Camera.main.WorldToScreenPoint(ThingToSell.transform.position + Vector3.up); // gets screen position.\
screenPosition.y = Screen.height - (screenPosition.y + 1); // inverts y
Rect rect = new Rect(screenPosition.x - 50,
screenPosition.y - 12, 100, 60); // makes a rect centered at the player ( 100x24 )
GUI.Box(rect, "", GUI.skin.box);
//shjow sell button
if (GUI.Button(new Rect(rect.xMin + 4, rect.yMin + 4, 92, 24), "Sell", GUI.skin.button))
{
money += hardness? ThingToSell.getCost() / 2:0;
Destroy(ThingToSell.gameObject);
}
//show cancel button
else if (GUI.Button(new Rect(rect.xMin + 4, rect.yMin + 28, 92, 24), "Cancel", GUI.skin.button))
{
ThingToSell = null;
}
}
//check for user mouse click
else if (Input.GetMouseButtonDown(0))
{
if (justclicked == false)
{
//check iuf the user clicked on a tile
RaycastHit hit;
Ray clicked3D = Camera.main.ScreenPointToRay(Input.mousePosition);
Physics.Raycast(clicked3D, out hit, 100000f);
if (hit.transform != null && hit.transform.gameObject.tag == "BuildTile")
{
//if clicked on a tile create tower
BuildTile Tile = hit.transform.gameObject.GetComponent <BuildTile>();
if (Tile.Tower == null)
{
if (money >= Towers[selectorGrid + towerPage * boxNumber].TowerObject.GetComponent <Tower>().getCost())
{
money -= Towers[selectorGrid + towerPage * boxNumber].TowerObject.GetComponent <Tower>().getCost();
Tile.Tower = (Instantiate(Towers[selectorGrid + towerPage * boxNumber].TowerObject, hit.transform.position + new Vector3(0, .75f, 0), new Quaternion()) as GameObject);
}
}
}
//if user clicked on tower show sell diologue
else if (hit.transform != null && hit.transform.gameObject.tag == "Tower")
{
ThingToSell = hit.transform.gameObject.GetComponent <Tower>();
}
}
justclicked = !justclicked;
}
//move camera based on arrow keys and wasd
MousePositionMoving = new Vector3(0, 0, 0);
if (Input.GetMouseButton(2) == true)
{
MousePositionMoving = new Vector3(MouseLastX - Input.mousePosition.x, MouseLastY - Input.mousePosition.y, 0) * (Camera.main.orthographicSize / 160);
}
MouseLastX = (int)Input.mousePosition.x;
MouseLastY = (int)Input.mousePosition.y;
Camera.main.transform.Translate(new Vector3(Input.GetAxis("Horizontal") * cameraMouseSpeed, Input.GetAxis("Vertical") * cameraMouseSpeed, 0) + MousePositionMoving);
//if user presses e turn the camera
if (Input.GetKey(KeyCode.E))
{
//Find point from camera and angle to y = zero point
float angle;
Vector3 axis;
this.transform.rotation.ToAngleAxis(out angle, out axis);
Vector3 LookDir = this.transform.rotation * new Vector3(0, 0, 1);
Vector2 RatioDir = new Vector2(LookDir.x, LookDir.z);
RatioDir.Normalize();
//rotate around this point
Vector3 endPoint = new Vector3(transform.position.x + RatioDir.x * transform.position.y, 0, transform.position.z + RatioDir.y * transform.position.y);
this.transform.RotateAround(endPoint, Vector3.up, scrollSpeed / -3);
}
//if user presses e turn the camera
if (Input.GetKey(KeyCode.Q))
{
//Find point from camera and angle to y = zero point
float angle;
Vector3 axis;
this.transform.rotation.ToAngleAxis(out angle, out axis);
Vector3 LookDir = this.transform.rotation * new Vector3(0, 0, 1);
Vector2 RatioDir = new Vector2(LookDir.x, LookDir.z);
RatioDir.Normalize();
//rotate around this point
Vector3 endPoint = new Vector3(transform.position.x + RatioDir.x * transform.position.y, 0, transform.position.z + RatioDir.y * transform.position.y);
this.transform.RotateAround(endPoint, Vector3.up, scrollSpeed / 3);
}
#endregion
}
