Companion

An identity Matrix33:

Creates a Matrix33 to rotate by |deg| about a pivot point at (0, 0).

Creates a Matrix33 to rotate by |deg| about a pivot point at pivot.

Creates a Matrix33 to rotate by |deg| about a pivot point at (pivotx, pivoty).

Creates a Matrix33 to scale by s. Returned matrix is:

Creates a Matrix33 to scale by (sx, sy). Returned matrix is:

Creates a Matrix33 to skew by (sx, sy). Returned matrix is:

Creates a Matrix33 to translate by (dx, dy). Returned matrix is: