deltaTransformPoint method
Given a point in the pre-transformed coordinate space, returns the
coordinates of that point after the transformation occurs. Unlike the
standard transformation applied using the transformPoint()
method, the
deltaTransformPoint()
method's transformation does not consider the
translation parameters tx
and ty
.
The point
for which you want to get the result of the matrix
transformation.
Returns the point resulting from applying the matrix transformation.
Implementation
GPoint deltaTransformPoint(GPoint point, [GPoint? out]) {
out ??= GPoint();
return out.setTo(point.x * a + point.y * c, point.x * b + point.y * d);
}