HUD h1,h2,h3; //create HUD slider objects

void setup(){
size(500, 500);

//slidername= new HUD( slidername, slider number, total number of sliders, slider size, color, strokeWeight);
h1= new HUD("h1",0,3,15,color(255,0,0),2);
h2= new HUD("h2",1,3,15,color(255,0,0),2);
h3= new HUD("h3",2,3,15,color(255,0,0),2);

ellipseMode(CENTER);
smooth();
noFill();
}

void draw(){
background(255);

h1.draw();
h2.draw();
h3.draw();

//nameofSlider.v gives the value of the slider at itŐs current position
//values range from -1 to 1 so multiply with a number as needed
stroke(h1.v*255,120,0);
ellipse(width*1/6,width/3,h1.v*100,h1.v*100);

stroke(h2.v*255,120,0);
ellipse(width*3/6,width/3,h2.v*100,h2.v*100);

stroke(h3.v*255,120,0);
ellipse(width*5/6,width/3,h3.v*100,h3.v*100);
}