private void DefaultTransformVals()
{
objCentre = InitObjCentre;
SurfCentre = InitSurfCentre;
OldScalVal = ScalVal = 1;
ScalValBox.Value = 1;
if (PyramidRB.Checked)
{
OldTransVals.X = TransVals.X = objCentre.X;
OldTransVals.Y = TransVals.Y = objCentre.Y;
OldTransVals.Z = TransVals.Z = objCentre.Z;
}
else
{
OldTransVals.X = TransVals.X = SurfCentre.X;
OldTransVals.Y = TransVals.Y = SurfCentre.Y;
OldTransVals.Z = TransVals.Z = SurfCentre.Z;
}
XTransBox.Value = (decimal)OldTransVals.X;
YTransBox.Value = (decimal)OldTransVals.Y;
ZTransBox.Value = (decimal)OldTransVals.Z;
XRotValue = YRotValue = ZRotValue = OldXRotValue = OldYRotValue = OldZRotValue = 0;
ZRotBox.Value = YRotBox.Value = XRotBox.Value = 0;
obj = (Polygon3D[])InitObj.Clone();
bs.ControlPoints = (PointF3D[, ])InitCntrlPoints.Clone();
}
public static PointF3D[] Translate3D(PointF3D[] obj, double x, double y, double z)
{
PointF3D[] TranslatedtedObj = new PointF3D[obj.Length];
obj.CopyTo(TranslatedtedObj, 0);
Matrix CurPoint;
for (int i = 0; i < TranslatedtedObj.Length; i++)
{
CurPoint = Form3DCoordsMatrix(obj[i].X, obj[i].Y, obj[i].Z);
CurPoint = Get3DTranslationMatrix(x, y, z).Multiply(CurPoint);
TranslatedtedObj[i].X = (float)CurPoint.GetElementValue(0, 0);
TranslatedtedObj[i].Y = (float)CurPoint.GetElementValue(1, 0);
TranslatedtedObj[i].Z = (float)CurPoint.GetElementValue(2, 0);
}
return(TranslatedtedObj);
}
public static PointF3D[] RotateZ3D(PointF3D[] obj, double angle, PointF3D RotationCentre)
{
PointF3D[] RotatedObj = new PointF3D[obj.Length];
obj.CopyTo(RotatedObj, 0);
RotatedObj = Translate3D(RotatedObj, -RotationCentre.X, -RotationCentre.Y, -RotationCentre.Z);
Matrix CurPoint;
for (int i = 0; i < RotatedObj.Length; i++)
{
CurPoint = Form3DCoordsMatrix(RotatedObj[i].X, RotatedObj[i].Y, RotatedObj[i].Z);
CurPoint = GetZRotation3DMatrix(angle).Multiply(CurPoint);
RotatedObj[i].X = (float)CurPoint.GetElementValue(0, 0);
RotatedObj[i].Y = (float)CurPoint.GetElementValue(1, 0);
RotatedObj[i].Z = (float)CurPoint.GetElementValue(2, 0);
}
RotatedObj = Translate3D(RotatedObj, RotationCentre.X, RotationCentre.Y, RotationCentre.Z);
return(RotatedObj);
}
public static PointF3D[] Scale3D(PointF3D[] obj, double xScal, double yScal, double zScal, PointF3D ScalingCentre)
{
PointF3D[] ScaledtedObj = new PointF3D[obj.Length];
obj.CopyTo(ScaledtedObj, 0);
ScaledtedObj = Translate3D(ScaledtedObj, -ScalingCentre.X, -ScalingCentre.Y, -ScalingCentre.Z);
Matrix CurPoint;
for (int i = 0; i < ScaledtedObj.Length; i++)
{
CurPoint = Form3DCoordsMatrix(ScaledtedObj[i].X, ScaledtedObj[i].Y, ScaledtedObj[i].Z);
CurPoint = Get3DScalingMatrix(xScal, yScal, zScal).Multiply(CurPoint);
ScaledtedObj[i].X = (float)CurPoint.GetElementValue(0, 0);
ScaledtedObj[i].Y = (float)CurPoint.GetElementValue(1, 0);
ScaledtedObj[i].Z = (float)CurPoint.GetElementValue(2, 0);
}
ScaledtedObj = Translate3D(ScaledtedObj, ScalingCentre.X, ScalingCentre.Y, ScalingCentre.Z);
return(ScaledtedObj);
}
public cg_lr3()
{
InitializeComponent();
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
OldTransVals = new PointF3D();
TransVals = new PointF3D();
ScalVal = OldScalVal = 1;
XRotValue = ZRotValue = YRotValue = OldXRotValue = OldYRotValue = OldZRotValue = 0;
// Lower pentagon
PointF3D LowerP1 = new PointF3D(1, 0, 0);
PointF3D LowerP2 = new PointF3D(0, 0, 3);
PointF3D LowerP3 = new PointF3D(2.5f, 0, 4.8f);
PointF3D LowerP4 = new PointF3D(5, 0, 3);
PointF3D LowerP5 = new PointF3D(4, 0, 0);
// Upper pentagon
PointF3D UpperP1 = new PointF3D(1.5f, 5, 1);
PointF3D UpperP2 = new PointF3D(1.1f, 5, 2.6f);
PointF3D UpperP3 = new PointF3D(2.5f, 5, 3.9f);
PointF3D UpperP4 = new PointF3D(4.1f, 5, 2.6f);
PointF3D UpperP5 = new PointF3D(3.5f, 5, 1f);
InitObj = new Polygon3D[] //pyramid
{
// lower pentagon
new Polygon3D(new PointF3D[] { LowerP1, LowerP2, LowerP3, LowerP4, LowerP5 }),
// lines connecting the pentagons
new Polygon3D(new PointF3D[] { LowerP1, UpperP1 }),
new Polygon3D(new PointF3D[] { LowerP2, UpperP2 }),
new Polygon3D(new PointF3D[] { LowerP3, UpperP3 }),
new Polygon3D(new PointF3D[] { LowerP4, UpperP4 }),
new Polygon3D(new PointF3D[] { LowerP5, UpperP5 }),
//upper pentagon
new Polygon3D(new PointF3D[] { UpperP1, UpperP2, UpperP3, UpperP4, UpperP5 })
};
obj = (Polygon3D[])InitObj.Clone();
InitObjCentre = new PointF3D(2, 2, 2);
objCentre = InitObjCentre;
InitCntrlPoints = new PointF3D[4, 4]
{
{ new PointF3D(0, 0, 0), new PointF3D(1, 0, 0), new PointF3D(2, 0, 0), new PointF3D(3, 0, 0) },
{ new PointF3D(0, 0, 1), new PointF3D(1, 0, 1), new PointF3D(2, 0, 1), new PointF3D(3, 0, 1) },
{ new PointF3D(0, 0, 2), new PointF3D(1, 0, 2), new PointF3D(2, 0, 2), new PointF3D(3, 0, 2) },
{ new PointF3D(0, 0, 3), new PointF3D(1, 0, 3), new PointF3D(2, 0, 3), new PointF3D(3, 0, 3) }
};
bs = new BezierSurface(InitCntrlPoints, 0.2);
InitSurfCentre = new PointF3D(1.5f, 0, 1.5f);
SurfCentre = InitSurfCentre;
RedactCPIndex = new Point(-1, -1);
DefaultTransformVals();
PointF[] ProjectedDimAxes = Affinity3D.ProjectDimetric(CoordinateLines);
PointF[] ProjectedXYAxes = Affinity3D.ProjectToXY(CoordinateLines);
PointF[] ProjectedYZAxes = Affinity3D.ProjectToYZ(CoordinateLines);
PointF[] ProjectedZXAxes = Affinity3D.ProjectToZX(CoordinateLines);
NormalisedDimetricAxes = new Point[ProjectedDimAxes.Length];
NormalisedXYAxes = new Point[ProjectedXYAxes.Length];
NormalisedYZAxes = new Point[ProjectedYZAxes.Length];
NormalisedZXAxes = new Point[ProjectedZXAxes.Length];
for (int i = 0; i < CoordinateLines.Length; i++)
{
NormalisedDimetricAxes[i].X = Normalisation.NormaliseX(ProjectedDimAxes[i].X, DimetricMinBorder, DimetricMaxBorder, paneldimetric.Width);
NormalisedDimetricAxes[i].Y = Normalisation.NormaliseY(ProjectedDimAxes[i].Y, DimetricMinBorder, DimetricMaxBorder, paneldimetric.Height);
NormalisedXYAxes[i].X = Normalisation.NormaliseX(ProjectedXYAxes[i].X, SideProjMinBorder, SideProjMaxBorder, panelxy.Width);
NormalisedXYAxes[i].Y = Normalisation.NormaliseY(ProjectedXYAxes[i].Y, SideProjMinBorder, SideProjMaxBorder, panelxy.Height);
NormalisedYZAxes[i].X = Normalisation.NormaliseX(ProjectedYZAxes[i].X, SideProjMinBorder, SideProjMaxBorder, panelyz.Width);
NormalisedYZAxes[i].Y = Normalisation.NormaliseY(ProjectedYZAxes[i].Y, SideProjMinBorder, SideProjMaxBorder, panelyz.Height);
NormalisedZXAxes[i].X = Normalisation.NormaliseX(ProjectedZXAxes[i].X, SideProjMinBorder, SideProjMaxBorder, panelzx.Width);
NormalisedZXAxes[i].Y = Normalisation.NormaliseY(ProjectedZXAxes[i].Y, SideProjMinBorder, SideProjMaxBorder, panelzx.Height);
}
}
private void TransformObject()
{
if (OldXRotValue != XRotValue)
{
if (PyramidRB.Checked)
{
for (int i = 0; i < obj.Length; i++)
{
obj[i].Outline = obj[i].RotateX(XRotValue - OldXRotValue, objCentre);
}
}
else
{
bs.ControlPoints = bs.RotateX(XRotValue - OldXRotValue, SurfCentre);
}
OldXRotValue = XRotValue;
}
if (OldYRotValue != YRotValue)
{
if (PyramidRB.Checked)
{
for (int i = 0; i < obj.Length; i++)
{
obj[i].Outline = obj[i].RotateY(YRotValue - OldYRotValue, objCentre);
}
}
else
{
bs.ControlPoints = bs.RotateY(YRotValue - OldYRotValue, SurfCentre);
}
OldYRotValue = YRotValue;
}
if (OldZRotValue != ZRotValue)
{
if (PyramidRB.Checked)
{
for (int i = 0; i < obj.Length; i++)
{
obj[i].Outline = obj[i].RotateZ(ZRotValue - OldZRotValue, objCentre);
}
}
else
{
bs.ControlPoints = bs.RotateZ(ZRotValue - OldZRotValue, SurfCentre);
}
OldZRotValue = ZRotValue;
}
if (OldTransVals != TransVals)
{
if (PyramidRB.Checked)
{
for (int i = 0; i < obj.Length; i++)
{
obj[i].Outline = obj[i].Translate(new PointF3D(TransVals.X - OldTransVals.X, TransVals.Y - OldTransVals.Y, TransVals.Z - OldTransVals.Z));
}
objCentre.X += TransVals.X - OldTransVals.X;
objCentre.Y += TransVals.Y - OldTransVals.Y;
objCentre.Z += TransVals.Z - OldTransVals.Z;
}
else
{
bs.ControlPoints = bs.Translate(new PointF3D(TransVals.X - OldTransVals.X, TransVals.Y - OldTransVals.Y, TransVals.Z - OldTransVals.Z));
SurfCentre.X += TransVals.X - OldTransVals.X;
SurfCentre.Y += TransVals.Y - OldTransVals.Y;
SurfCentre.Z += TransVals.Z - OldTransVals.Z;
}
OldTransVals = TransVals;
}
if (OldScalVal != ScalVal)
{
float curscalval = ScalVal / OldScalVal;
if (PyramidRB.Checked)
{
for (int i = 0; i < obj.Length; i++)
{
obj[i].Outline = obj[i].Scale(new PointF3D(curscalval, curscalval, curscalval), objCentre);
}
}
else
{
bs.ControlPoints = bs.Scale(new PointF3D(curscalval, curscalval, curscalval), SurfCentre);
}
OldScalVal = ScalVal;
}
}
/// <summary>
/// Draws Bezier surface to the Graphics object.
/// </summary>
/// <param name="g">0 - dimetric, 1 - xy, 2 - yz, 3 - zx</param>
private void DrawSurface(Graphics g, int drawTo)
{
int PointCount = bs.DrawPoints.GetLength(0);
PointF3D[] Surfpoints = new PointF3D[PointCount * PointCount];
PointF[] prSurfPoints;
Point[] nPrSurfPoints = new Point[Surfpoints.Length];
switch (drawTo)
{
case 0:
prSurfPoints = bs.ProjectDimetric();
for (int i = 0; i < nPrSurfPoints.Length; i++)
{
nPrSurfPoints[i].X = Normalisation.NormaliseX(prSurfPoints[i].X, DimetricMinBorder, DimetricMaxBorder, paneldimetric.Width);
nPrSurfPoints[i].Y = Normalisation.NormaliseY(prSurfPoints[i].Y, DimetricMinBorder, DimetricMaxBorder, paneldimetric.Height);
}
break;
case 1:
prSurfPoints = bs.ProjectXY();
for (int i = 0; i < nPrSurfPoints.Length; i++)
{
nPrSurfPoints[i].X = Normalisation.NormaliseX(prSurfPoints[i].X, SideProjMinBorder, SideProjMaxBorder, panelxy.Width);
nPrSurfPoints[i].Y = Normalisation.NormaliseY(prSurfPoints[i].Y, SideProjMinBorder, SideProjMaxBorder, panelxy.Height);
}
break;
case 2:
prSurfPoints = bs.ProjectYZ();
for (int i = 0; i < nPrSurfPoints.Length; i++)
{
nPrSurfPoints[i].X = Normalisation.NormaliseX(prSurfPoints[i].X, SideProjMinBorder, SideProjMaxBorder, panelyz.Width);
nPrSurfPoints[i].Y = Normalisation.NormaliseY(prSurfPoints[i].Y, SideProjMinBorder, SideProjMaxBorder, panelyz.Height);
}
break;
case 3:
prSurfPoints = bs.ProjectZX();
for (int i = 0; i < nPrSurfPoints.Length; i++)
{
nPrSurfPoints[i].X = Normalisation.NormaliseX(prSurfPoints[i].X, SideProjMinBorder, SideProjMaxBorder, panelzx.Width);
nPrSurfPoints[i].Y = Normalisation.NormaliseY(prSurfPoints[i].Y, SideProjMinBorder, SideProjMaxBorder, panelzx.Height);
}
break;
}
Point[,] nPrSP2Dim = new Point[PointCount, PointCount];
for (int r = 0; r < PointCount; r++)
{
for (int c = 0; c < PointCount; c++)
{
nPrSP2Dim[r, c] = nPrSurfPoints[r * PointCount + c];
}
}
Pen pen = new Pen(Color.Red);
for (int r = 0; r < PointCount - 1; r++)
{
for (int c = 0; c < PointCount - 1; c++)
{
g.DrawLine(pen, nPrSP2Dim[r, c], nPrSP2Dim[r, c + 1]);
g.DrawLine(pen, nPrSP2Dim[r, c], nPrSP2Dim[r + 1, c]);
}
}
for (int i = 0; i < PointCount - 1; i++)
{
g.DrawLine(pen, nPrSP2Dim[i, PointCount - 1], nPrSP2Dim[i + 1, PointCount - 1]);
g.DrawLine(pen, nPrSP2Dim[PointCount - 1, i], nPrSP2Dim[PointCount - 1, i + 1]);
}
if (checkBox1.Checked)
{
PointF cp = new Point();
SolidBrush brush = new SolidBrush(Color.Black);
int circleRad = 3;
for (int r = 0; r < 4; r++)
{
for (int c = 0; c < 4; c++)
{
cp = Affinity3D.ProjectDimetric(new PointF3D[] { bs.ControlPoints[r, c] })[0];
cp.X = Normalisation.NormaliseX(cp.X, DimetricMinBorder, DimetricMaxBorder, paneldimetric.Width);
cp.Y = Normalisation.NormaliseY(cp.Y, DimetricMinBorder, DimetricMaxBorder, paneldimetric.Height);
g.FillEllipse(brush, cp.X - circleRad, cp.Y - circleRad, circleRad * 2, circleRad * 2);
g.DrawString("P" + (r + 1) + (c + 1), Font, brush, cp);
}
}
}
}
