蒙版和剪辑GLSurfaceView [英] Mask and Clip GLSurfaceView

问题描述

我使用的SDK通过回调提供了矩形glsurfaceview.

I work with an SDK that provides a rectangular glsurfaceview through a callback.

我希望能够以圆形布局呈现此视图. (即)我想在圆形视图上显示该视图

I want to be able to render this view in a circular layout. (i.e.) I would like to display the view on a circular view

我尝试使用掩膜版式，例如使用可蒙版版式 https://github.com/christophesmet/android_maskable_layout (适用于图像，不适用于视频)

I have tried using masking layout such as using a maskable layout https://github.com/christophesmet/android_maskable_layout (works great for images, not so much for videos)

如何裁剪和渲染为圆?

How do I go about clipping and rendering this as a circle?

(背景是不断变化的，因此我无法在此视频视图的顶部叠加透明视图.目的是要获得矩形的玻璃表面视图，在其上面具有圆形的玻璃表面视图)

(The background is constantly changing, so i cant overlay a transparent view on top of this video view. The aim is to have a rectangular glsurface view on top of which there is a circular glsurface view)

** UI目标:**

**UI Objective : **

推荐答案

我现在对一个项目有几乎相同的要求，其中包括屏蔽

I have pretty much the same requirement with a project right now, which involves masking a GLSurfaceView provided by PexKit. The solution that works for me is making a subclass of FrameLayout (or any other ViewGroup) and placing the GLSurfaceView inside it.

然后在FrameLayout子类中使用canvas.clipPath:

Then in the FrameLayout subclass use canvas.clipPath:

private Path clippingPath;

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    if (w != oldw || h != oldh) {
        int radius = Math.min(w, h)/2;
        clippingPath = new Path();
        clippingPath.addCircle(w/2, h/2, radius, Path.Direction.CW);
    }
}

@Override
protected void dispatchDraw(Canvas canvas) {
    int count = canvas.save();
    canvas.clipPath(clippingPath);
    super.dispatchDraw(canvas);
    canvas.restoreToCount(count);
}

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