public static void AddLine(
Vector2 start, Vector2 end, Vector2 dir,
Geometry geometry,
float startThickness,
float endThickness)
{
Vector2 right = MathsHelper.Perp2D(dir);
Vector2 startRight = right * (startThickness / 2f);
Vector2 endRight = right * (endThickness / 2f);
int baseIndex = geometry.Vertices.Count;
geometry.Vertices.Add(end - endRight);
geometry.Vertices.Add(start + startRight);
geometry.Vertices.Add(end + endRight);
geometry.Vertices.Add(start - startRight);
//if (geometry.ColliderPoints != null)
//{
// for (int i = baseIndex; i < geometry.Vertices.Count; ++i)
// {
// geometry.ColliderPoints.Add((Vector2)geometry.Vertices[i]);
// }
//}
geometry.UVs.Add(new Vector2(0, 1));
geometry.UVs.Add(new Vector2(1, 0));
geometry.UVs.Add(new Vector2(1, 1));
geometry.UVs.Add(new Vector2(0, 0));
geometry.Indices.Add(baseIndex + 0);
geometry.Indices.Add(baseIndex + 2);
geometry.Indices.Add(baseIndex + 1);
geometry.Indices.Add(baseIndex + 0);
geometry.Indices.Add(baseIndex + 1);
geometry.Indices.Add(baseIndex + 3);
geometry.CreateDefaultNormals();
}