public IndexQuad(IndexPoint point0, IndexPoint point1, IndexPoint point2, IndexPoint point3, bool forwardSlash = false)
: base(point0, point1, point2, point3) => _forwardSlash = forwardSlash;
// Counter-clockwise winding
// 2
// / \
// / \
// 0-----1
/// <summary>
/// Creates an index triangle with counter-clockwise winding.
/// </summary>
/// <param name="point0">On an equilateral triangle, this is the bottom left point.</param>
/// <param name="point1">On an equilateral triangle, this is the bottom right point.</param>
/// <param name="point2">On an equilateral triangle, this is the top point.</param>
public IndexTriangle(IndexPoint point0, IndexPoint point1, IndexPoint point2)
{
_points.Add(point0);
_points.Add(point1);
_points.Add(point2);
}