worldExtents method
Computes this rectangle's world-space half-extents under transform.
Implementation
void worldExtents(Matrix3 transform, MVector2 ex, MVector2 ey) {
ex.setValues(transform[0] * size.x / 2, transform[1] * size.x / 2);
ey.setValues(transform[3] * size.y / 2, transform[4] * size.y / 2);
}