jwchou-Project07-Curves

sketch 66

// Jackie Chou
// Section E
// jwchou@andrew.cmu.edu
// Project-07-Curves

function setup() {
    createCanvas(480, 480);
    frameRate(60);
    angleMode(DEGREES); //change angle mode
}

//goal: draw a flower with a center that pops up as the flower takes form
//then flower abstracts and center dissapears

function draw() {
    background(200, 210, 253);
    var R = map(mouseX, 0, width, 200, 255); //change stroke color of flower as mouseX changes
    var G = map(mouseX, 0, width, 140, 250);
    var B = map(mouseX, 0, width, 60, 130);

    drawRanunculoiud(); //draw curve function

    //flower center
    translate(-width/2, - height/2); //move flower center to center
    fill(170, 80, 130); 
    
    if (mouseX < 200 & mouseX > 50) {   //draw flower center when flower starts to be visible
    var ellipseSize = map(mouseX, 0, 200, 80, 0)
    noStroke();
    ellipse(width/2, height/2, ellipseSize, ellipseSize);
}

function drawRanunculoiud(){
    beginShape();
    noFill();
    stroke(R, G, B); 
    translate(width/2, height/2); //move curve to center


    for (var i = 0; i < width/5; i++){ //mouseX controls number of curves
        constrain(mouseX/3, 100, 300); //constrain mouseX

        var x;
        var y;

        var a = map(mouseX, 0, width, 30, 10);
        var t = map(i, 0, mouseX, 10, 360);

        //Ranunculoid http://mathworld.wolfram.com/Ranunculoid.html
 		x = a * (6 * cos(t) - cos(6 * t));
        y = a * (6 * sin(t) - sin(6 * t));
        vertex(x, y);

    endShape();
    }
}
}

For this project, I had a bit of a hard time implementing the equation. However, looking and actually studying the diagrams on the site helped me understand what each variable affected the curve.

I eventually created a Ranunculoid, which looks like a flower with 5 pedals. When the mouse moves to the right, the flower grows but then eventually abstracts. When the form looks like a flower, a center disk forms. However, when the form abstracts, the center disk dissappears.

The first three frames showcase the growth of the flower.

The next three frames showcase the abstraction.