Question on Matrix Transformations

[John]

When using the C# for the Matrix Transformation for a 100x200 panel:

1. To Reverse Y axis, I can:
Matrix m = new Matrix(new Rectangle(0,0,100,200), new Point[] {
new Point(0,100), new Point(100,200), new Point(0,0)} );

2. To Reverse X axis, I can:
Matrix m = new Matrix(new Rectangle(0,0,100,200), new Point[] {
new Point(100,0), new Point(100,200), new Point(0,0)} );

My question is:
How to reverse both X and Y axis using the Matrix Transformation?

Thanks,

(e-mail address removed)

 

[S. Han]

Call RotateAt() and set the angle to 180 degrees.