public static List <VertexPositionColor> GetTriangleStrip(Vector3[] points, float thickness, Color color, ref int triangleCount, Matrix worldMatrix)
{
Vector3 lastPoint = Vector3.Zero;
List <VertexPositionColor> list = new List <VertexPositionColor>();
for (int i = 0; i < points.Length; i++)
{
if (i == 0)
{
lastPoint = points[i];
continue;
}
Vector3 t1 = Vector3.Transform(lastPoint, worldMatrix);
Vector3 t2 = Vector3.Transform(points[i], worldMatrix);
Vector3 direction = t1 - t2;
Vector3 normal = Vector3.Cross(direction,
MathFunctions.GetClosestPointOnLineSegment(t1, t2, Camera.Position) - Camera.Position);
direction.Normalize();
normal.Normalize();
Vector3 p1 = t1 + normal * thickness;
Vector3 p2 = t1 - normal * thickness;
Vector3 p3 = t2 + normal * thickness;
Vector3 p4 = t2 - normal * thickness;
list.Add(new VertexPositionColor(p1, color));
list.Add(new VertexPositionColor(p2, color));
list.Add(new VertexPositionColor(p3, color));
list.Add(new VertexPositionColor(p4, color));
triangleCount += 2;
lastPoint = points[i];
}
return(list);
}