Project 07 Curves

This project was a lot of fun to experiment with. I originally planned to make something different, but as I experimented I developed this idea. I used the Scarabaeus Curve and realized it resembled a club from a deck of cards, which differed from my original idea to make it a flower. I had trouble with modifying the curve at first, but it got easier as I worked on it.

sketch

//Rebecca Enright
//Section A
//renright@andrew.cmu.edu
//Curve Composition

function setup() {
    createCanvas(640, 480);   
}

function draw() {
    background(255, 0, 0);    
    //draw club
    push();
    translate(width/2, height/2);
    CreateClub();
    pop();
    
}

function CreateClub() {
    //create variables for a, b, and nPoints
    var a = 50;
    var b = 100;
    var nPoints = 100;
    var pw = constrain((mouseX/50), 0, 10);
    var ph = constrain((mouseY/50), 0, 10);
    //create Scarabaeus curve
    fill(0);
    beginShape();
    for (var i = 0; i < nPoints; i++) {
        var t = map(i, 0, nPoints, 0, TWO_PI);  
        //function for curve      
        var r = b * cos(2 * t) - a * cos(t); 
        
        //create x and y for vertex
        var x = r * cos(pw + t);
        var y = r * sin(ph + t);
        
        vertex(x,y);  
    }
    endShape(CLOSE);
}