Project-07: Composition with Curves

/*Name:Camellia(Siyun) Wang; 
Section: C; 
Email Address: siyunw@andrew.cmu.edu;*/


function setup() {
    createCanvas(480, 480);

    nPoints = 100;
}


function draw() {
    background(245,222,179);
    push();
    translate(width / 2, height / 2);
    drawBulletnose();
    pop();
}

function drawBulletnose(){
    var x;
    var y;
    var a = constrain(mouseX / 2,0,200);
    var b = constrain(mouseY / 2,0,200);

    stroke(240,248,255);
    strokeWeight(5);
    fill(230,230,250);
    beginShape();
    for(var i = 1; i < nPoints; i++){
        var t  = map(i,0,nPoints,0,PI);
        //Bullet Nose
        x = a * cos(t);
        y = b * (1/tan(t));
        vertex(x,y);
    }
    for(var i = 1; i < nPoints; i++){
        var t  = map(i,0,nPoints,0,PI);
        //Bullet Nose
        x = -a * cos(t);
        y = b * (1/tan(t));
        vertex(x,y);
    }
    endShape();


}