class Circle{
	
	constructor(x, y, r){
		this.x = x;
		this.y = y;
		this.r = r;
		this.done = false;
		this.valid = true;
	}
	
	draw(){ellipse(this.x, this.y, this.r * 2, this.r * 2);}
	
	grow(){this.r ++;}
	
	touchesEdges(){
		if (this.x + this.r > windowWidth || this.x - this.r < 0
		   || this.y + this.r > windowHeight || this.y - this.r < 0) return true;
	}
	
	touchesCircle(){
		for (var c of circles){
			if (c == this) continue;
			if (dist(this.x, this.y, c.x, c.y) < this.r + c.r) return true;
		} 
	}
	
}