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CGRect助手？(CGRect Assistant?)

 这有点模糊，但我会尝试具体。  
 你如何使用CGRect和CGRectMake？ 是否有助手或其他东西可以用来快速找到积分？ 我查看了Interface Builder，但在我看来，没有快速找到在CGRect中使用的点的方法。 如果有人能指出我正确的方向，那就太好了。 

This is a little vague, but i'll try to be specific. 
How do you use CGRect and CGRectMake? Is there an assistant or something which you can use to find points quickly? I've looked in Interface Builder, but it seems to me that there is no quick way of finding the points to use in CGRect. If anyone could point me in the right direction, it would be great.

原文：https://stackoverflow.com/questions/11161892

更新时间：2023-07-29 22:07

最满意答案

 生成一个无处不在的数组A在其他地方有1和0：  
>> A == 1
ans =
     0     0     0     1     0     0     1
     1     0     0     0     0     0     1
     0     0     0     0     1     0     0
     0     0     0     1     0     0     0
 
 然后你可以使用sum ：  
sum(A == 1, 2)

Generate an array that has a 1 everywhere A has a 1, and 0 everywhere else: 
>> A == 1
ans =
     0     0     0     1     0     0     1
     1     0     0     0     0     0     1
     0     0     0     0     1     0     0
     0     0     0     1     0     0     0
 
Then you can just use sum: 
sum(A == 1, 2)

CGRect助手？(CGRect Assistant?)

最满意答案

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