Applying a texture to stroke a CGContextStrokePath

Question

I am working on making a simple drawing program. So far I am able to stroke the path with a given color and that all works out fine. I was wondering if there was a way to stroke it with a texture instead of a color. Say for instance I want to give the path the look of a pencil line. Any idea on how I would go about doing that?

Thanks in advance for your help!

Answer 1

1. Begin a transparency layer.
2. Get the path's bounds.
3. Stroke the path with any non-transparent color.
4. Set the blend mode to source in.
5. Fill the bounding rectangle from step 2 with the desired texture pattern.
6. End the transparency layer.