void setup()
{
	size(400, 400);
	background(102);
	smooth();
}

void draw() {
	variableEllipse(mouseX, mouseY, pmouseX, pmouseY);
}

void variableEllipse(int x, int y, int px, int py) {
	float speed = abs(x-px) + abs(y-py);
	stroke(speed);
	ellipse(x, y, speed, speed);
}