问题描述
能否取悦别人解释我（ASCII真的欢迎）的步幅参数代表着什么的<$c$c>Canvas.drawBitmap()而在<$c$c>Bitmap.setPixels()/getPixels()?我知道这是一种方式来跳过颜色数组中的元素，但如何？
Could please somebody explain me (ASCII is really welcome) what the stride argument stands for in Canvas.drawBitmap() and in Bitmap.setPixels()/getPixels()? I understand it's a way to skip elements in the colors array, but how?
推荐答案
在大多数情况下，步幅是相同的宽度。跨距是，如果你要复制/绘制位图的次区域是有用的。举例来说，如果你有一个100×100的位图，你想画的50×50右上角，你可以使用一个宽度50像素的和100px的一大步。
In most cases the stride is the same as the width. The stride is useful if you are trying to copy/draw a sub-region of a Bitmap. For instance, if you have a 100x100 bitmap and you want to draw the 50x50 top-right corner, you can use a width of 50px and a stride of 100px.
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