Originally developed by Matt Gallagher, further developed by Roy Ratcliffe, ported to iPhone by Ole Begemann, and now with additional refactoring by Roy Ratcliffe. Call it a team effort!
- Matt's original post: Drawing gloss gradients in CoreGraphics
- Roy's further-development post: Gloss-Caustic Shading
- Ole's iPhone-port post: Porting RRGlossCausticShader to the iPhone
- Roy's additional-refactoring post: Gloss Caustic Shader for iPhone
- Add the files in the root folder to your Xcode project, namely:
mfor the gloss-caustic shader,
mfor the caustic colour matcher,
mfor the exponential helper,
mfor luminance conversion,
UIColorextensions (iPhone only).
- Create an instance of
- Optionally modify the shader's base colour and parameters (see
RRCausticColorMatcher.hfor the possible settings).
-drawRect:method, do something like this:
CGRect bounds = self.bounds; [shader drawShadingFromPoint:bounds.origin toPoint:CGPointMake(bounds.origin.x, bounds.origin.y + bounds.size.height) inContext:UIGraphicsGetCurrentContext()];
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