Texture GetPatternTexture(OpenGlDevice Device)
{
Texture Save = Device.texture;
if (Pattern == null)
{
return(null);
}
Rectangled R = new Rectangled(Pattern.PatternX, Pattern.PatternY, Pattern.PatternWidth, Pattern.PatternHeight);
FBO FrameBuffer = new FBO();
FrameBuffer.BackGround = System.Drawing.Color.Transparent;
Device.PushMatrix();
xyz RU = new xyz(R.Width, R.Height, 0);
xyz RD = new xyz(R.X, R.Y, 0);
Point _RU = Device.ToScr(RU);
Point _RD = Device.ToScr(RD);
FrameBuffer.Init((int)(_RU.X - _RD.X), (int)(_RD.Y - _RU.Y));
FrameBuffer.EnableWriting();
Pattern.Paint(Device);
Device.PopMatrix();
FrameBuffer.DisableWriting();
Texture result = FrameBuffer.Texture;
Device.texture = Save;
result.WorldWidth = R.Width;
result.WorldHeight = R.Height;
result.Translation = new xy(R.X, R.Y);
FrameBuffer.Dispose(true);
return(result);
}
void ReCalculateBuffer()
{
Rectangled R = DefinitionDomain;
U_Coeff = new double[100][];
double Step = (float)R.Width / 100f;
for (int i = 0; i < 100; i++)
{
U_Coeff[i] = Utils.CoeffSpline(UKnots, ControlPoints.GetLength(0), UDegree, UPeriodicity, R.Left + i * Step);
}
V_Coeff = new double[100][];
Step = (float)R.Height / 100f;
for (int i = 0; i < 100; i++)
{
V_Coeff[i] = Utils.CoeffSpline(VKnots, ControlPoints.GetLength(1), VDegree, VPeriodicity, R.Bottom + i * Step);
}
}
/// <summary>
/// a construcor which have a <see cref="Rectangled"/> and a <see cref="OpenGlDevice"/>. See also <see cref="OpenGlDevice"/>
/// </summary>
/// <param name="Rectangle"></param>
/// <param name="Device"></param>
public CtrlRectangle(Rectangled Rectangle, OpenGlDevice Device) : base(Device)
{
_A = new xy(Rectangle.X, Rectangle.Y);
_B = new xy(Rectangle.X + Rectangle.Width, Rectangle.Y + Rectangle.Height);
}
/// <summary>
/// overrides the <see cref="Surface.CheckPeriodic"/> method and set the <see cref="Surface.UPeriodicity"/> and the <see cref="Surface.VPeriodicity"/>.
/// </summary>
protected override void CheckPeriodic()
{
double Fac = 0.000001;
Rectangled R = DefinitionDomain;
try
{
if (Value(R.X, R.Y).dist(Value(R.X + R.Width, R.Y)) < 20 * Fac)
{
UPeriodicity = R.Width;
}
else
{
UPeriodicity = 1000000;
}
}
catch (Exception)
{
}
if (Value(R.X + R.Width, R.Y).dist(Value(R.X + R.Width, R.Y + R.Height)) < 20 * Fac)
{
VPeriodicity = R.Height;
}
else
{
VPeriodicity = 1000000;
}
if (Value(R.X, R.Y).dist(Value(R.X + R.Width / 4, R.Y)) < 20 * Fac)
{
DownPol = new Pol(true, R.Y);
}
else
{
DownPol = new Pol(false, -1);
}
if (Value(R.X, R.Y + R.Height).dist(Value(R.X + R.Width / 4, R.Y)) < 20 * Fac)
{
UpPol = new Pol(true, R.Y + R.Height);
}
else
{
UpPol = new Pol(false, -1);
}
if (Value(R.X, R.Y).dist(Value(R.X, R.Y + R.Height)) < 20 * Fac)
{
LeftPol = new Pol(true, R.Y);
}
else
{
LeftPol = new Pol(false, -1);
}
if (Value(R.X + R.Width, R.Y).dist(Value(R.X + R.Width, R.Y + R.Height)) < 20 * Fac)
{
RightPol = new Pol(true, R.X + R.Width);
}
else
{
RightPol = new Pol(false, -1);
}
if (UpPol.Enable & DownPol.Enable & LeftPol.Enable & RightPol.Enable)
{
}
}
/// <summary>
/// Calculates the value of the <see cref="BSplineSurface"/>.
/// </summary>
/// <param name="u">Parameter u.</param>
/// <param name="v">Parameter v.</param>
/// <returns>The Evaluation of the bspline.</returns>
public override xyz Value(double u, double v)
{
try
{
if (UKnots == null)
{
UKnots = Utils.StandardKnots(ControlPoints.GetLength(0), UDegree);
}
if (VKnots == null)
{
VKnots = Utils.StandardKnots(ControlPoints.GetLength(1), VDegree);
}
Rectangled R = DefinitionDomain;
xyz Result = new xyz(0, 0, 0);
int UCount = ControlPoints.GetLength(0);
int VCount = ControlPoints.GetLength(1);
double[] UCoeff = Utils.CoeffSpline(UKnots, UCount, UDegree, UPeriodicity, v);
double[] VCoeff = Utils.CoeffSpline(VKnots, VCount, VDegree, VPeriodicity, u);
int FirstUCoeffNonZero = 0;
for (int i = 0; i < UCoeff.Length; i++)
{
if (UCoeff[i] != 0)
{
FirstUCoeffNonZero = i;
break;
}
}
int FirstVCoeffNonZero = 0;
for (int i = 0; i < VCoeff.Length; i++)
{
if (VCoeff[i] != 0)
{
FirstVCoeffNonZero = i;
break;
}
}
int UntilU = Math.Min(FirstUCoeffNonZero + UDegree, UCoeff.Length - 1);
int UntilV = Math.Min(FirstVCoeffNonZero + VDegree, VCoeff.Length - 1);
for (int i = 0; i < UCoeff.Length; i++)
{
for (int k = 0; k < VCoeff.Length; k++)
{
Result = Result + ControlPoints[i, k] * (UCoeff[i] * VCoeff[k]);
}
}
if (ZHeight(u, v) != 0)
{
return(Base.Absolut(Result + Normal(u, v) * ZHeight(u, v)));
}
else
{
return(Base.Absolut(Result));
}
}
catch (Exception)
{
if ((ControlPoints.GetLength(0) + UDegree + 1) != UKnots.Length)
{
System.Windows.Forms.MessageBox.Show("the definition of the UKnots is wrong. . It must be UKnots.Length=ControlPoints.GetLength(0) + UDegree + 1");
}
else
if ((ControlPoints.GetLength(1) + VDegree + 1) != VKnots.Length)
{
System.Windows.Forms.MessageBox.Show("the definition of the VKnots is wrong. It must be VKnots.Length=ControlPoints.GetLength(1) + VDegree + 1");
}
return(new xyz(0, 0, 0));
}
}
void RefreshVertices()
{
Position = new xyzf[(UResolution + 1) * (VResolution + 1)];
Normals = new xyzf[(UResolution + 1) * (VResolution + 1)];
Rectangled R = new Rectangled(0, 0, 1, 1);
double xStep = (float)1 / (float)(UResolution);
double yStep = (float)1 / (float)(VResolution);
xyzf _Point = new xyzf(0, 0, 0);
xyzf _Normal = new xyzf(0, 0, 0);
float ustep = (float)(Width / (float)UResolution);
float vstep = (float)(Height / (float)VResolution);
for (int u = 0; u < UResolution + 1; u++)
{
int URow = u * (VResolution + 1);
for (int v = 0; v < VResolution + 1; v++)
{
Position[URow + v] = new xyzf((float)Origin.x + u * ustep, (float)Origin.y + v * vstep, (float)Origin.z);
}
}
for (int u = 0; u < UResolution + 1; u++)
{
int URow = u * (VResolution + 1);
for (int v = 0; v < VResolution + 1; v++)
{
Normals[URow + v] = new xyzf(0, 0, 1);
}
}
TextureCoords = new xyf[(UResolution + 1) * (VResolution + 1)];
ustep = (float)(1 / (float)UResolution);
vstep = (float)(1 / (float)VResolution);
for (int u = 0; u < UResolution + 1; u++)
{
int URow = u * (VResolution + 1);
for (int v = 0; v < VResolution + 1; v++)
{
TextureCoords[URow + v] = new xyf(u * ustep, v * vstep);
}
}
if (UseQuads)
{
Indices = new int[UResolution * VResolution * 4];
int ID = 0;
for (int u = 0; u < UResolution; u++)
{
int URow = u * (VResolution + 1);
for (int v = 0; v < VResolution; v++)
{
Indices[ID] = u * (VResolution + 1) + v;
Indices[ID + 1] = u * (VResolution + 1) + v + 1;
Indices[ID + 2] = (u + 1) * (VResolution + 1) + v + 1;
Indices[ID + 3] = (u + 1) * (VResolution + 1) + v;
ID += 4;
}
}
TriangleIndices = getTriangleIndices();
}
else
{
Indices = getTriangleIndices();
}
}
