question: public CGPoint inverseTransform ( CGPoint src , CGPoint dst ) throws NoninvertibleTransformException { double det = getDeterminant ( ) ; if ( Math . abs ( det ) < ZERO ) { throw new NoninvertibleTransformException ( "Determinant is zero" ) ; } if ( dst == null ) { dst = CGPoint . zero ( ) ; } double x = src . x - m02 ; double y = src . y - m12 ; dst . x = ( float ) ( ( x * m11 - y * m01 ) / det ) ; dst . y = ( float ) ( ( y * m00 - x * m10 ) / det ) ; return dst ; }
target:  Transforms the point according to the inverse of this AffineTransformation.