这里给出一种精确长方形减去一半的方法:
演示设备:联想 AIO520-22一体机、WIN7、PS CS6 。
一、如下图,这里有两个一模一样的白色长方形,分别在两个图层中,要把其中一个长方形去掉一半,另一个是做为参照物的。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/359b033b5bb5c9eac7b14571c739b6003bf3b3e6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
二、 这里首先把其中一个长方形开启自由变换(快捷键Ctrl+T)。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/64380cd7912397dd473bde964b82b2b7d1a287e6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
三、然后在自由变换工具条中,把水平缩放数值改为50% 。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/bd315c6034a85edf9531b8b15b540923dc5475e6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
四、如下图,改为50%之后,这个长方形就精确去掉了一半。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/4610b912c8fcc3ce867d8fa18045d688d53f20e6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
五、回车键关闭自由变换,V键把这个长方形对齐另一个长方形,能够看出,调整过的长方形是原长方形的一半大小。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d50735fae6cd7b89c1d17c111d2442a7d8330ee6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)