/// <summary>
/// Triangulate the polygon into a lot of triangles
/// </summary>
private void DoTriangulate()
{
triangles = null;
if (points.Count <= 3)
{
return;
}
// Convert to Vector4[]
Vector4[] controlPoints = new Vector4[points.Count];
for (int i = 0; i < points.Count; i++)
{
controlPoints[i] = new Vector4(points[i].X, points[i].Y, 0);
}
// Triangulate the polygon
triangleIndices = PolygonModifier.Triangulate(controlPoints);
// Save triangle vertex for later drawing.
triangles = new Vector4[triangleIndices.Length][];
for (int i = 0; i < triangleIndices.Length; i++)
{
int[] triangleFace = triangleIndices[i];
Vector4[] triangle = triangles[i] = new Vector4[3];
triangle[0] = controlPoints[triangleFace[0]];
triangle[1] = controlPoints[triangleFace[1]];
triangle[2] = controlPoints[triangleFace[2]];
}
}
