Function invert

invert(out: mat2d.Mat2d, a: mat2d.Mat2d): mat2d.Mat2d | null
Inverts a mat2d
Parameters
- out: mat2d.Mat2d
  the receiving matrix
- a: mat2d.Mat2d
  the source matrix
Returns mat2d.Mat2d | null
out, or null if source matrix is not invertible
- Defined in core/mat2d.ts:103