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Basic circle packing in Processing
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| /* | |
| VARIATIONS: | |
| Draw lines between all circles | |
| Draw lines between new circle and closest neighboor | |
| Move new circle to exactly touch closest neighboor | |
| Change fill or stroke depending on circle size | |
| Change overlap threshold (slight overlap ok / large margin) | |
| */ | |
| Circle[] circles = new Circle[1000]; | |
| int count = 0; | |
| int maxDiameter = 100; | |
| int minDiameter = 10; | |
| int lastAdded = 0; | |
| int lastAddedTimeout = 100; | |
| void setup() { | |
| size(500, 500); | |
| smooth(); | |
| background(255); | |
| noFill(); | |
| } | |
| void draw() { | |
| //background(255); | |
| if (count < circles.length) { | |
| circles[count] = new Circle(5, maxDiameter); | |
| for (int i=0; i<count; i++) { | |
| if (circles[count].intersects(circles[i])) { | |
| circles[count] = null; | |
| break; | |
| } | |
| } | |
| if (circles[count] != null) { | |
| circles[count].draw(); | |
| if (count > 1) { | |
| float nearest = 100000; | |
| float current = 0; | |
| int nearestIndex = -1; | |
| for (int i=0; i<count; i++) { | |
| current = dist(circles[i].x, circles[i].y, circles[count].x, circles[count].y); | |
| if (current < nearest) { | |
| nearest = current; | |
| nearestIndex = i; | |
| } | |
| } | |
| stroke(255, 255, 0); | |
| line(circles[nearestIndex].x, circles[nearestIndex].y, circles[count].x, circles[count].y); | |
| stroke(0); | |
| } | |
| count++; | |
| lastAdded = 0; | |
| } else { | |
| if (lastAdded > lastAddedTimeout && maxDiameter > minDiameter) { | |
| maxDiameter--; | |
| lastAdded = 0; | |
| } | |
| lastAdded++; | |
| } | |
| } | |
| } | |
| class Circle | |
| { | |
| float x, y, radius; | |
| Circle(float minDiameter, float maxDiameter) { | |
| radius = random(minDiameter, maxDiameter) / 2.0; | |
| x = random(radius, width - radius); | |
| y = random(radius, height - radius); | |
| } | |
| boolean intersects(Circle c) { | |
| return dist(c.x, c.y, x, y) < c.radius + radius; | |
| } | |
| void draw() { | |
| color c = lerpColor(color(255), color(0), radius/50.0); | |
| fill(c); | |
| ellipse(x, y, radius*2, radius*2); | |
| } | |
| } |
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