我想显示图像的一部分而不是显示整个图像.首先显示完整图像，但在延迟时间后显示该图像的一部分.我不明白我该怎么做.就像我们可以通过固定标签的尺寸来显示部分文本一样.但是在图像的情况下，我如何使用精灵或其他方式来做到这一点.

I want to display portion of image not to display the total image.At first display the full image but after a delay time display the a portion of this image. I can not understand how can i do this. Like we can display portion of text by fixing the dimension of Label.But in case of image how can i do that using sprite or other.

推荐答案

在CCSprite上设置纹理矩形.

Set the texture rect on the CCSprite.

//create a sprite, e.g. myFile is 128x128 pixels
CCSprite* mySprite = [CCSprite spriteWithFile:@"myFile.png"];

//position it somewhere
[mySprite setPosition:ccp(xPos,yPos)];

//show only the first 64x64 square
[mySprite setTextureRect:CGRectMake(0, 0, 64, 64)];

//add it to the root
[self addChild:mySprite];