Arc shaped Gradient fill

jazzballg

Hello!

I'm trying to fill arcs drawn using the arc() function with a gradient fill. This seems a little tricky, is there a simple way to do this?

Thanks, Govind.

TfGuy44

No.

TfGuy44

size(400,400);
noStroke();
background(0);
for(int i=0;i<90;i++){
  fill(map(i,0,90,128,255),255-map(i,0,90,128,255),0);
  arc(20,20,width,height,i*HALF_PI/90,HALF_PI);
}

jazzballg

Great! Thanks for the sample code!

PhiLho

Another way is to draw the gradient on a rectangular shape, then to use arc as a mask shape.

Similar technique shown in http://bazaar.launchpad.net/~philho/+junk/Processing/view/head:/_QuickExperiments/TexturePaint2/TexturePaint2.pde