//Feilds int level = 0; boolean firstClick = false; boolean rev = true; int x = 0; int y = 0; void setup(){ size(500, 1000); noStroke(); smooth(); noLoop(); } void draw(){ if(firstClick == false){ background(0); fill(255); } else pattern(250, 900, 1000, level); } void pattern(float x, float y, int radius, int level){ float c = random(y/4); float colour = c / level*1.1; fill(colour, 10); drawCross(x, y, radius); if(level > 1){ level--; pattern(x, y - radius/2, radius/2, level); pattern(x, y + radius/2, radius/2, level); pattern(x - radius/2, y, radius/2, level); pattern(x + radius/2, y, radius/2, level); pattern(x - radius/2, y - radius/2, radius/2, level); pattern(x - radius/2, y + radius/2, radius/2, level); pattern(x + radius/2, y - radius/2, radius/2, level); pattern(x + radius/2, y + radius/2, radius/2, level); } } void drawCross(float x, float y, int rad){ translate(x,y); rotate(PI/4); ellipse(0, 0, rad, rad*0.375); ellipse(0, 0, rad*0.375, rad); fill(255,50); ellipse(0, 0, rad*.09, rad*.09); fill(59, 76, 90); rotate(PI*3/4 + PI); translate(-x,-y); } void mouseClicked(){ if (firstClick == false) firstClick = true; if (rev == false) level--; if (rev == true) level++; if (level >= 6){ rev = false; level--; } if (level <= 0){ rev = true; level++; } redraw(); }

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Using recursion in with a custom method for making a cross and fading it down the Graphics pane.