如何在窗口上渲染图像使其适合圆形或椭圆形？ [英] How does one render an image on a window making it fit into a circle or an ellipse?

问题描述

给定基于矩形或正方形的图像，如何在窗口上渲染它以使图像适合我自己选择的圆形或椭圆形？



我尝试了什么：



我已经使用google搜索解决方案但无法找到任何解决方案。

Given a rectangular or square based image, how do I render it on a window so that the image fit into a circle or ellipse of my own choice?

What I have tried:

I have googled fora solution but was unable to find any.

推荐答案

如果您只想绘制部分图像，则必须仅绘制这些部分。通过一些数学，您可以检测坐标及其像素是否与我们的绘图区域相似。



另一种方式是与地区合作。深入研究地区创建者一文。



我的建议是坚持使用区域，因为微软有一些功能。

If you want to draw only parts of the image you must draw only these parts. With somemath you can detect whether a coordinate and its pixel belomg to our drawing region.

Another way is to work with regions. Take a dive into the article A Region Creator.

My tip is to stick with regions, because Microsoft has some functionality built into Windows.

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