How to change color of intersected parts of CAShapeLayer in Objective-C?

Question

I am trying to draw CGPaths using CAShapeLayer. I want to change the color of the parts where lines are intersected.

Following screenshots explain the goal easier.

score 0 · Answer 1 · edited May 23 '17 at 12:06

0

Check @Alex Nichol's Answer on this post, How to determine intersection of CGPaths .

He developed an Open Source solution to CGPath collision detection, as well as a youtube video showing it in Action.

Hope this helps !

edited May 23 '17 at 12:06

Community

answered Jun 09 '12 at 18:17

skram

I checked that solution and tried the code but it does not work for me. That code only returns one pixel of the intersected parts, if lines have width more than 1 pixel there is no straightforward way to change whole intersected part's color. I need something to burn colors somehow. – Can Leloğlu Jun 09 '12 at 18:21

1 Answers1