Project 7

sketch

//Michelle Dang
//mtdang@andrew.cmu.edu
//Section D
//07 Project
var a3 = 150;
function setup() {
    createCanvas(400, 400);
    background(220);
}

function draw() {
    background(60, 64, 91);
    cissoid(); //background curve
    astroidpedal1(); //yellow curve
    astroidpedal2(); //green curve

}

function astroidpedal1() {
    beginShape()
    noFill();
    strokeWeight(2);
    stroke(244, 241, 222)
    var a = mouseY;
    for (var i=0; i< 100; i++) {
    var theta = map(i, 0, 100, 0, 150);
    var x = width/2+a * (cos(theta))^3; //parametric equation: x=a*cos^3t
    var y = height/2+a * (sin(theta))^3; //parametric equation: y=a*sin^3t
    vertex(x, y)
    }
    endShape();
}

function astroidpedal2() {
    beginShape()
    noFill();
    stroke(129, 179, 154)
    var a2=mouseX
    for (var i=0; i< 400; i++) {
    var theta = map(i, 0, 400, 0, TWO_PI);
    var x = width/2+a2 * cos(theta)^3; 
    var y = height/2+a2 * sin(theta)^3; 
    vertex(x, y)
    }
     endShape();

}

function cissoid() {
    push();
    beginShape()
    noFill();
    stroke(mouseX, mouseY)
    translate(200,200)
    for (var i=0; i< 80; i++) {
    var theta = map(i, 50, 100, 0, 100);
    var x = 2*a3*sin(theta)^2; //parametric equation: x=a*sin^2t
    var y = (2*a3*sin(theta)^3) / cos(theta) //parametric equation: y=a*cost(t)
    vertex(x, y)
    }
     endShape();
     pop();


}