public Polygon(List <Vertex> verts)
{
Vertex = verts;
_Normal = CrossProduct(verts[0]._Point - verts[1]._Point, verts[1]._Point - verts[2]._Point);
_Normal /= _Normal.GetLength();
foreach (Vertex v in verts)
{
v.Polygon.Add(this);
}
}
protected override void OnDeviceUpdate(object s, GDIDeviceUpdateArgs e)
{
if (PrevApproxLevel != ApproxLevel)
{
ComputeObject();
PrevApproxLevel = ApproxLevel;
}
if (e.Heigh < e.Width)
{
WindowScale = (double)e.Heigh / InitialHeight;
}
else
{
WindowScale = (double)e.Width / InitialWidth;
}
switch (ProjMode)
{
case ProjectionMode.FR:
rotX = Rotation.X;
rotY = Rotation.Y;
rotZ = Rotation.Z;
break;
case ProjectionMode.ISO:
rotX = -35.0;
rotY = -45.0;
rotZ = 0.0;
break;
case ProjectionMode.ORT_F:
rotX = 0.0;
rotY = 0.0;
rotZ = 0.0;
break;
case ProjectionMode.ORT_L:
rotX = 0.0;
rotY = 90.0;
rotZ = 0.0;
break;
case ProjectionMode.ORT_T:
rotX = -90.0;
rotY = 0.0;
rotZ = 0.0;
break;
}
// compute transformation ( scale and rotation ) matrix
DMatrix4 mat = DMatrix4.Identity;
double scale = 100.0;
RotateMatrix(ref mat, rotX, rotY, rotZ);
ScaleMatrix(ref mat, scale * Scale.X * WindowScale, scale * Scale.Y * WindowScale, scale * Scale.Z * WindowScale);
// transform verticis of object
foreach (Vertex v in Vertecis)
{
v.Point = mat * v._Point;
}
Polygons.QuickSort(p => p.Vertex.Average(v => v.Point.Z));
// draw main object
foreach (Polygon p in Polygons)
{
p.Normal = CrossProduct(p.Vertex[0].Point - p.Vertex[1].Point, p.Vertex[1].Point - p.Vertex[2].Point);
p.Normal /= p.Normal.GetLength();
if (p.Normal.Z > 0)
{
DrawPolygonFixGaps2(p, e.Graphics, e.Width, e.Heigh);
}
}
// some optional features
foreach (Polygon p in Polygons)
{
if (p.Normal.Z > 0)
{
if (EnableNormals)
{
DrawNormal(p, e.Graphics, e.Width, e.Heigh);
}
if (EnableVertexNumbers)
{
DrawVertexNumbers(p, e.Graphics, e.Width, e.Heigh);
}
}
}
// Drawing axis (in the right lower corner)
DVector4 ox = mat * (new DVector4(1.0, 0.0, 0.0, 0.0));
DVector4 oy = mat * (new DVector4(0.0, 1.0, 0.0, 0.0));
DVector4 oz = mat * (new DVector4(0.0, 0.0, 1.0, 0.0));
ox = ox / ox.GetLength() * 50.0 * WindowScale;
oy = oy / oy.GetLength() * 50.0 * WindowScale;
oz = oz / oz.GetLength() * 50.0 * WindowScale;
DVector4 pos = new DVector4(e.Width - 70.0 * WindowScale, e.Heigh - 70.0 * WindowScale, 0.0, 0.0);
DrawAxis(e.Graphics, ox, oy, oz, pos);
}
