ofxAddons
Simple of addon to create linear color gradients
Forks
Forks pushed to more recently than armadillu/ofxColorGradient itself, plus any admin-confirmed fork with commits of its own — worth checking if you're hitting issues with the original.
README
ofxColorGradient
added in this fork:
// draw orientation (default is horizontal) gradient.setDrawVertical(true);
// draw gradient direction (invert default direction) gradient.setDrawDirFlip(true); Simple OpenFrameworks addon to create linear color gradients
ofxColorGradient<ofColor> gradient; //first, fill in the gradient with colors, left to right gradient.addColor( ofColor::red ); gradient.addColor( ofColor::green ); gradient.addColor( ofColor::yellow );
//query the gradient for a color at a specific spot ofColor color = gradient.getColorAtPercent(0.2);
//rinse and repeat to draw the full gradient for(float i = 0.0f; i < 1.0f; i+= 0.1f){ ofSetColor( gradient.getColorAtPercent(i) ); //draw using that color } It also allows creating a gradient from an image.
It also provides Google's Turbo Rainbow Colormap, which comes with an Apache-2.0 license.
License
ofxColorGradient is made available under the MIT license.
It includes Google's Turbo Rainbow Colormap, which uses the Apache-2.0 license.