Project 07: Curves

//Anthony Pan
//Section C

//Cardioid Curve Interaction
//polar coordinate equation r = a*(1-cos(theta))
//parametric equation
    //x = a * cos(t) * (1 - cos(t))
    //y = a * sin(t) * (1 - cos(t))
//mouseX change colors
//mouseY changes how many are drawn



function setup() {
    createCanvas(480, 480);
    background(220, 100, 150);
}

function draw() {
    //var x1 = 0
    //var y1 = 0

    push();
    //drawRect(x1,y1); //draw another shape
    translate(width/2, height/2);
    drawCardioidCurve();
}


function drawCardioidCurve() {
    var x;
    var y;

    var a = 80;
    var h = mouseX; //mouseX interaction
    var h1 = map(mouseY, 0, 480, 0, 256); //mouseY interaction

    fill((h1 * 0.7)%256, 0, h1);
    beginShape();
    for(var i = 0; i < 101; i++) {
        var theta = map(i, 0, 101, 0, TWO_PI);

        x = (h + a) * cos(theta) * (1 - cos(theta));
        y = (h + a) * sin(theta) * (1 - cos(theta));
        vertex(x, y);
    }
    endShape(CLOSE);
}