ejercicio setup y draw 3

void setup() {
size(500,400);
smooth();
background(109);
frameRate(30);
}
void draw(){
stroke(mouseX,0,mouseY);
float distance=dist(pmouseX,pmouseY,mouseX,mouseY);
float maxStroke=80;
strokeWeight(maxStroke-constrain(distance,0,maxStroke));
line(pmouseX,pmouseY,mouseX,mouseY);
}
void mouseClicked(){
rectMode(CENTER);
fill(mouseY,400,mouseX);
noStroke();
triangle(mouseX,mouseY,30,30,40,50);
}
void keyPressed(){
background(0);
}