开发者

Android Bitmap contour

I'm trying to draw the contour of my drawable,

I tried to use Blur, as in this page:

How to make glow effect around a bitmap?

Its effect is not what I want,

I want a "solid" c开发者_如何学JAVAontour,

not blurred.

anyone knows how?


There is no outline type filter or mask that I can find, while blur and shadow mask are not very strong. Hence you could create your own effect by using color filter and scale. This example would create a red contour

ColorFilter filter;
filter = new PorterDuffColorFilter(0xFFFF0000, PorterDuff.Mode.SRC_IN);         

paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColorFilter(filter);

canvas.save();
canvas.scale(1.1f, 1.1f,imageCenterX , imageCenterY);
canvas.drawBitmap(image, imageX, imageY, paint);
canvas.restore();

canvas.drawBitmap(image, imageX, imageY, null);

It is fast enough for a game frame animation, I've tested it.

0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜