/*

    In this example we explore basic pendulum motion. Take a look at
    the Pendulum.pde file to explore the inner workings of our pendulum
    simulation.
*/

// we'll use one pendulum
Pendulum p;

void setup() {

    // setup the environment
    size(400, 400);
    background(0);
    colorMode(RGB, 255, 255, 255, 100);
    smooth();
    
    // create a new pendulum with a fulcrum at the center of the
    // screen and an arm of length 150
    p = new Pendulum(new Vector2D(width / 2, height / 2), 150.0f);
}

void draw() {

    // slowly fade out the screen
    fill(0, 5);
    rect(0, 0, width, height);
    
    // run our pendulum simulation
    p.simulate();
}

void mousePressed() {

    // let the pendulum know the mouse was clicked
    p.clicked(mouseX, mouseY);
}

void mouseReleased() {

    // tell the pendulum the mouse has been released.
    p.stopDragging();
}