Project 07- Curves

//Shruti Prasanth
//Section C
//Project 07 Curves


var numPoints = 400;
function setup() {
    createCanvas(480, 480);
}


function draw() {
    background(105,179,183); //BLUE background
    
    for (var x = 80; x <= 460; x += 80) {   //number of elements in the grid
        for (var y = 80; y <= 460; y += 80) {
            push();
            translate(x, y);
            HypocycloidPedal();
            pop();
        }
    }

}

function HypocycloidPedal() {
    //radius
    var a = map(mouseX, 0, 480, 0, 120); 
    var b = map(mouseX, 0, 480, 0, 120);

    strokeWeight(mouseY/50, mouseX/50); //change in stroke thickness
    stroke(255); //WHITE 
    noFill();

  
    beginShape();
    for (var i=0; i<numPoints; i++) {
        var angle = map(i, 0, 100, 0, TWO_PI);
        var n = 8; //number of petals

        x = a * (((n-1) * cos(angle)) + (cos((n-1) * angle)) );
        y = a * (((n-1) * sin(angle)) - (sin((n-1) * angle)) );

        vertex(x, y);       
    }
    endShape();     
}