Android的像素渲染 [英] Android subpixel rendering
本文介绍了Android的像素渲染的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一条线,应该得到更薄它得到了更长的时间。问题是,你可以清楚地看到一个跳跃时,得到一个像素更薄。有没有办法做到像素渲染/反锯齿在Android?
I have a line that should get thinner the longer it gets. The problem is, that you can clearly see a jump when it gets a pixel thinner. Is there a way to do subpixel rendering/antialiasing on Android?
canvas.drawRect()
接受浮点值,但它忽略那些。这里的code:
canvas.drawRect()
takes float values, but it's ignoring those. Here's the code:
@Override
protected void onDraw(Canvas canvas) {
float width = getMeasuredWidth() / (float) getMeasuredHeight() * getMinimumHeight();
float left = (getMeasuredWidth() - width) / 2.0f;
canvas.drawRect(left, 0, left + width, getMeasuredHeight(), paint);
super.onDraw(canvas);
}
该漆对象 ANTI_ALIAS_FLAG
启用,包含纯色。
这是默认的行:
这是当它变得更长和更薄。它应该有对双方的一些抗锯齿,虽然使整个过渡更加平滑似乎
This is when it gets longer and thinner. It should have some anti aliasing on the sides, though to make the whole transition seems smoother.
推荐答案
这似乎做得更好:
@Override
protected void onDraw(Canvas canvas) {
float width = getMeasuredWidth() / (float) getMeasuredHeight() * getMinimumHeight();
float left = (getMeasuredWidth() - width) / 2.0f;
paint.setStrokeWidth(width * getResources().getDisplayMetrics().density);
canvas.drawLine(left, 0, left, getMeasuredHeight(), paint);
super.onDraw(canvas);
}
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