Color Gradients 2-6

clrGrad_2_6.pde

  color evaluate(float percent) {
    int sz = colors.size();
    if (sz == 0) {
      return 0x00000000;
    }
    
    float diff;
    float fraction;
    ColorStop current;
    ColorStop prev;
    for (int i = 0; i < sz; ++i) {
      current = colors.get(i);
      if (percent < current.percent) {
        prev = colors.get(i - 1 < 0 ? 0 : i - 1);
        diff = prev.percent - current.percent;
        fraction = diff == 0 ? 0
          : (percent - current.percent) / diff;
        return lerpColor(current.clr, prev.clr, fraction);
      }
    }
    return colors.get(sz - 1).clr;
  }