将两个CGPoints转换为CGRect [英] Turn two CGPoints into a CGRect

问题描述

如果有两个不同的 CGPoints ，我怎么能把它们变成 CGRect ？

How can I, given two different CGPoints, turn them into an CGRect?

示例：

CGPoint p1 = CGPointMake(0,10);
CGPoint p2 = CGPointMake(10,0);

如何将其转换为 CGRect ？

推荐答案

这将占用两个任意点，并为您提供将它们作为对角的CGRect。

This will take two arbitrary points and give you the CGRect that has them as opposite corners.

CGRect r = CGRectMake(MIN(p1.x, p2.x), 
                      MIN(p1.y, p2.y), 
                      fabs(p1.x - p2.x), 
                      fabs(p1.y - p2.y));

较小的x值与较小的y值配对将始终是rect的原点（前两个）参数）。 x值之间的差值的绝对值将是宽度，y值之间的差值的绝对值是高度。

The smaller x value paired with the smaller y value will always be the origin of the rect (first two arguments). The absolute value of the difference between x values will be the width, and between y values the height.

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