如何在UIPanGestureRecognizer中使用velocityView更快地拖动？

Question

Having a little trouble understanding how to implement a faster dragging speed for the code I'm using below (written by @PaulSoltz) which allows you to drag an object across the screen. I realize you have to use the velocityInView method from UIPanGestureRecognizer , and I understand it returns the x velocity vector and y velocity vector. If velocity = distance over time, then for instance velocityx = (x2 - x1) / time and I'm unsure how to use this formula to get what I need. Basically I just want to be able to adjust the speed of my movement to make it a little faster. Maybe I'm over thinking things, but if anyone could help me understand this it would be appreciated. Thanks.

- (void)handlePanGesture:(UIPanGestureRecognizer *)gestureRecognizer {

    UIView *myView = [gestureRecognizer view];

    CGPoint translate = [gestureRecognizer translationInView:[myView superview]];


    if ([gestureRecognizer state] == UIGestureRecognizerStateChanged || [gestureRecognizer state] == UIGestureRecognizerStateChanged) {
        [myView setCenter:CGPointMake(myView.center.x + translate.x, myView.center.y + translate.y)];
    [gestureRecognizer setTranslation:CGPointZero inView:[myView superview]];
    }
}

Answer 1

只需将平移向量的分量乘以某个常数即可。

[myView setCenter:CGPointMake(myView.center.x + translate.x * 2, myView.center.y + translate.y * 2)];