/// <summary>
/// overrides the <see cref="Surface.OnDraw(OpenGlDevice)"/> method.
/// </summary>
/// <param name="Device">the <see cref="OpenGlDevice"/> in which will be painted.</param>
protected override void OnDraw(OpenGlDevice Device)
{
if (!plane)
{
base.OnDraw(Device); return;
}
object Handle = null;
if ((Device.RenderKind == RenderKind.SnapBuffer) || (Entity.Compiling))
{
SurfaceSnappItem S = new SurfaceSnappItem();
Handle = Device.Selector.RegisterSnapItem(S);
S.Surface = this;
}
IndexType[] Indices = null;
xyzf[] Points = null;
xyzf[] Normals = null;
xyf[] Texture = null;
// if ((BoundedCurves != null) && (BoundedCurves.Count > 0))
{
Indices = new IndexType[] { 0, 1, 2, 0, 2, 3 };
Points = new xyzf[] { A, B, C, D };
Normals = new xyzf[] { N00.toXYZF(), N00.toXYZF(), N00.toXYZF(), N00.toXYZF() };
Texture = new xyf[] { new xyf(0, 0), new xyf(0, 0), new xyf(0, 0), new xyf(0, 0) };
}
//else
// GetTrianglesFull(ref Indices, ref Points, ref Normals, ref Texture);
if (Device.PolygonMode == PolygonMode.Fill)
{
Primitives3d.drawTriangles(Device, Indices, Points, Normals, Texture, null);
}
else
{
Primitives3d.drawFouranglesLined(Device, Indices, Points, Normals, Texture);
}
Entity.CheckCompiling();
if ((Device.RenderKind == RenderKind.SnapBuffer) || (Entity.Compiling))
{
Device.Selector.UnRegisterSnapItem(Handle);
}
}
/// <summary>
/// internal.
/// </summary>
/// <param name="Device"></param>
/// <param name="Indices"></param>
/// <param name="Points"></param>
/// <param name="Texture"></param>
public static void drawTriangles2d(OpenGlDevice Device, List <IndexType> Indices, xyf[] Points, xyf[] Texture)
{ //ok
refIndices = Indices.ToArray();
refPoints2d = Points;
refTexture = Texture;
double dir = 1;
for (int i = 0; i < Indices.Count; i += 3)
{
xy A = new xy(Points[Indices[i + 1]].x - Points[Indices[i]].x, Points[Indices[i + 1]].y - Points[Indices[i]].y);
xy B = new xy(Points[Indices[i + 2]].x - Points[Indices[i]].x, Points[Indices[i + 2]].y - Points[Indices[i]].y);
double F = A & B;
if (System.Math.Abs(F) > 0.0001)
{
if (F < 0)
{
dir = 1; // schaut welche Richtung der Normal vektor haben muss
}
else
{
dir = -1;
}
break;
}
}
xyzf[] Normals = new xyzf[Points.Length];
for (int i = 0; i < Points.Length; i++)
{
Normals[i] = new xyz(0, 0, dir).toXYZF();
}
xyzf[] _Points = new xyzf[Points.Length];
for (int i = 0; i < Points.Length; i++)
{
_Points[i] = new xyzf(Points[i].x, Points[i].y, 0);
}
refNormals = Normals;
Primitives3d.drawTriangles(Device, Indices.ToArray(), _Points, Normals, Texture, null);
}