23

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);
}

void keyPressed(){
if(key == 'k'){
save("23.jpg");
}
}