Android : How can I tile a texture from a bitmap to a non-rectangular shape?

Question

I am trying to draw non-rectangular shapes on canvas. I need to fill them up with textures like grass and tarmac(for roads). How can I do that? I have already tried to overlap bitmaps of different shapes to achieve this effect on one frame but the shapes keep changing as time progresses, so I need another solution. Thanks in advance Sameer Raina

score 0 · Answer 1 · edited May 23 '17 at 12:21

0

You can use BitmapDrawable to draw seamless pattern images like this

 BitmapDrawable tileImg = new BitmapDrawable(getResources(), R.drawable.image);
 tileImg.setBounds(bounds);
 tileImg.setTileModeXY(TileMode.REPEAT, TileMode.REPEAT); 
 tileImg.draw(canvas); // this will fill the canvas.

To create shapes with it you should clip the canvas to a path that corresponds to your shape, and then calling the tileImg.draw(canvas); method, to fill the clipped area only.

Be careful though, because there are some issues with using clipPath(), read more about that here and here

edited May 23 '17 at 12:21

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answered Jun 24 '13 at 08:56

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I actually achieved the effect by using paint.setShader(BitmapShader). – user1990654 Jun 25 '13 at 12:01

Android : How can I tile a texture from a bitmap to a non-rectangular shape?

1 Answers1