/// <summary>
/// draws a 2d-polygon, which is stored in Array. See also <see cref="xyArray"/>.
/// </summary>
/// <param name="Array"><see cref="xyArray"/>.</param>
public void drawPolyLine(xyArray Array)
{
Object Handle = null;
if ((RenderKind == RenderKind.SnapBuffer))
{
Handle = Selector.RegisterSnapItem(new PolyLineSnappItem(Array));
}
if (PolygonMode == PolygonMode.Fill)
{
Loxy L = new Loxy();
L.Add(Array);
drawFilledArray2d(this, L);
if ((RenderKind == RenderKind.SnapBuffer))
{
Selector.UnRegisterSnapItem(Handle);
}
if (PolygonMode == PolygonMode.Fill)
{
return;
}
}
Primitives2d.drawArrayLined(this, Array);
if ((RenderKind == RenderKind.SnapBuffer))
{
Selector.UnRegisterSnapItem(Handle);
}
}
void _drawPolyPolyCurve(Loxy L, Loca Loca, int id)
{
Object Handle = null;
if (PolygonMode == PolygonMode.Fill)
{
if ((RenderKind == RenderKind.SnapBuffer))
{
Handle = Selector.RegisterSnapItem(getSI(id, Loca, L, -1));
}
drawFilledArray2d(this, L);
if ((RenderKind == RenderKind.SnapBuffer))
{
MeshCreator.Renew();
Selector.UnRegisterSnapItem(Handle);
}
return;
}
if ((RenderKind == RenderKind.SnapBuffer))
{
SnappItem S = (getSI(id, Loca, L, -1));
Handle = Selector.RegisterSnapItem(S);
}
{
for (int i = 0; i < L.Count; i++)
{
//IndexType[] Indices = new IndexType[L[i].Count];
//for (int k = 0;k < L[i].Count; k++)
//{
// Indices[k] = k;
//}
//xyzf[] Points = new xyzf[L[i].Count];
//for (int k = 0; k < L[i].Count; k++)
//{
// Points[k] = new xyzf((float)L[i][k].X, (float)L[i][k].y, 0f);
//}
//Primitives3d.drawTriangles(this,Indices, Points, null, null, null);
////if ((RenderKind == RenderKind.SnapBuffer))
//// Selector.ToSnapBuffer((uint)i);
Primitives2d.drawArrayLined(this, L[i]);
}
}
if ((RenderKind == RenderKind.SnapBuffer))
{
Selector.UnRegisterSnapItem(Handle);
}
}
private void drawFilledArray2d(OpenGlDevice Device, Loxy L)
{
if (L.Count == 0)
{
return;
}
double xMax = -10000000;
double yMax = -10000000;
double xMin = 10000000;
double yMin = 10000000;
if ((Device.texture != null) && (Device.texture.SoBigAsPossible != Drawing3d.Texture.BigAsPosible.None))
{
for (int i = 0; i < L[0].Count; i++)
{
if (L[0][i].X > xMax)
{
xMax = L[0][i].X;
}
if (L[0][i].X < xMin)
{
xMin = L[0][i].X;
}
if (L[0][i].Y > yMax)
{
yMax = L[0][i].Y;
}
if (L[0][i].Y < yMin)
{
yMin = L[0][i].Y;
}
}
}
double xDiff = xMax - xMin;
double yDiff = yMax - yMin;
List <IndexType> Indices = new List <IndexType>();
xyf[] Points = null;
L.TriAngulation(Indices, ref Points);
xyf[] Texture = new xyf[Points.Length];
float Aspectx = 1;
float Aspecty = 1;
if ((Device.texture != null) && (Device.texture.SoBigAsPossible != Drawing3d.Texture.BigAsPosible.None))
{
if (Device.texture.Bitmap != null)
{
double w = (float)Device.texture.Bitmap.Width / Device.PixelsPerUnit;
double h = (float)Device.texture.Bitmap.Height / Device.PixelsPerUnit;
if (Device.texture.KeepAspect)
{
if (Device.texture.SoBigAsPossible == Drawing3d.Texture.BigAsPosible.Height)
{
Aspectx = (float)(h / w);
}
else
{
Aspecty = (float)(w / h);
}
}
}
for (int i = 0; i < Points.Length; i++)
{
if (Device.texture.KeepAspect)
{
if (Aspecty != 1)
{
Texture[i] = new xyf((Points[i].x - (float)xMin) / (float)(xDiff), (Points[i].y - (float)yMin) / (float)(xDiff / Aspecty));
}
if (Aspectx != 1)
{
Texture[i] = new xyf((Points[i].x - (float)xMin) / (float)(yDiff / Aspectx), (Points[i].y - (float)yMin) / (float)(yDiff));
}
}
else
{
Texture[i] = new xyf((Points[i].x - (float)xMin) / (float)(xDiff), (Points[i].y - (float)yMin) / (float)(yDiff));
}
}
}
else
{
for (int i = 0; i < Points.Length; i++)
{
Texture[i] = Points[i] + Points[0] * (-1);
}
}
Primitives2d.drawTriangles2d(Device, Indices, Points, Texture);
}
