pakt13
See /f0blog/pact-februari/
//pakt13
int index;
float rows, cols;
PGraphics grad;
void setup() {
size(640, 480, JAVA2D);
frameRate(60);
index= 0;
rows= 11.0;
cols= 11.0;
grad= createGraphics(width, height, JAVA2D);
grad.beginDraw();
grad.background(0);
createGradient(grad, width*0.5, height*0.5, width*2.0, color(0.5*255, 0.6*255, 0.5*255), color(0, 0, 0));
grad.endDraw();
fill(255);
noStroke();
}
void draw() {
background(0);
blendMode(DIFFERENCE);
beginShape(QUADS);
for (int y= 0; y<=rows; y++) {
for (int x= 0; x<=cols; x++) {
float xx= x/rows*width-2;
float yy= y/cols*height-2;
float vx= sin(index+(x*y))*(sin((index+x)*0.0015)+sin((index+y)*0.0062)*10.0);
float vy= cos(index+(x*y))*(sin((index+y)*0.0325)+sin((index+y)*0.0072)*10.0);
vertex(vx-xx, vy-yy);
vertex(vx+xx, vy-yy);
vertex(vx+xx, vy+yy);
vertex(vx-xx, vy+yy);
}
}
endShape();
blendMode(LIGHTEST);
image(grad, 0, 0);
index++;
}
void createGradient(PGraphics ctx, float x, float y, float radius, color c1, color c2) {
ctx.noStroke();
for (float r= radius; r>=0.0; r--) {
color col= lerpColor(c1, c2, r/radius);
ctx.fill(col);
ctx.ellipse(x, y, r, r);
}
}