Transformation Normalize

Transformation Normalize

- (CGFloat)getTransformScale {
    CGAffineTransform transform = self.transform;
    CGFloat scale = sqrt(transform.a*transform.a + transform.c*transform.c);
    return scale;
}

- (CGFloat)getTransformAngle {
    CGAffineTransform transform = self.transform;
    CGFloat angle = atan2(transform.b, transform.a);
    return angle;
}

- (void)normalizeTransform {
    CGFloat angle = [self getTransformAngle];
    CGFloat scale = [self getTransformScale];
    CGPoint center = self.center;
    
    self.transform = CGAffineTransformIdentity;
    self.frame = [SCViewUtil multiplyRect:self.frame byScale:scale];
    self.center = center;
    self.transform  = CGAffineTransformMakeRotation(angle);
}