Radial Gradient
/**
* Radial Gradient.
*
* Draws a series of concentric circles to create a gradient
* from one color to another.
*/
int dim;
void setup() {
size(640, 360);
dim = width / 2;
background(0);
colorMode(HSB, 360, 100, 100);
noStroke();
ellipseMode(RADIUS);
frameRate(1);
}
void draw() {
background(0);
for (int x = 0; x <= width; x += dim) {
drawGradient(x, height / 2);
}
}
void drawGradient(float x, float y) {
int radius = dim / 2;
float h = random(0, 360);
for (int r = radius; r > 0; --r) {
fill(h, 90, 90);
ellipse(x, y, r, r);
// still need this change: C++ float modulo
h = fmod(h + 1, 360);
}
}