Jessica Timczyk – Project 11

sketch

// Jessica Timczyk
// Section D
// jtimczyk@andrew.cmu.edu
// Project-

var turtle 

function setup() {
    createCanvas(480, 480);
    background(0);

    frameRate(10);
}


function draw() { 
    turtle = makeTurtle(mouseX, mouseY); // make turtle variables
    angle = turtle.angleTo(mouseX, mouseY);
    turtle.right(angle);
    turtle.forward(40);

   
    turtle.setWeight(6) // setting the specifications for the turtles lines
    strokeJoin(MITER);
    strokeCap(PROJECT);
    turtle.setColor(random(255)); //random colors

   
      turtle.penDown(); // make swirl shape
        turtle.forward(3);
        turtle.left(90);
        turtle.forward(50);
        turtle.right(90);
        turtle.forward(50);
        turtle.right(90);
        turtle.forward(37.5);
        turtle.right(90);
        turtle.forward(25);
        turtle.right(90);
        turtle.forward(12.5);
        turtle.right(90);
        turtle.forward(12.5);
        turtle.left(90);
        turtle.forward(12.5);
        turtle.left(90);
        turtle.forward(25);
        turtle.left(90);
        turtle.forward(37.5);
        turtle.left(90);
        turtle.forward(47);
        turtle.goto(mouseX,mouseY);



}

function turtleLeft(d) {
    this.angle -= d;
}


function turtleRight(d) {
    this.angle += d;
}


function turtleForward(p) {
    var rad = radians(this.angle);
    var newx = this.x + cos(rad) * p;
    var newy = this.y + sin(rad) * p;
    this.goto(newx, newy);
}


function turtleBack(p) {
    this.forward(-p);
}


function turtlePenDown() {
    this.penIsDown = true;
}


function turtlePenUp() {
    this.penIsDown = false;
}


function turtleGoTo(x, y) {
    if (this.penIsDown) {
      stroke(this.color);
      strokeWeight(this.weight);
      line(this.x, this.y, x, y);
    }
    this.x = x;
    this.y = y;
}


function turtleDistTo(x, y) {
    return sqrt(sq(this.x - x) + sq(this.y - y));
}


function turtleAngleTo(x, y) {
    var absAngle = degrees(atan2(y - this.y, x - this.x));
    var angle = ((absAngle - this.angle) + 360) % 360.0;
    return angle;
}


function turtleTurnToward(x, y, d) {
    var angle = this.angleTo(x, y);
    if (angle < 180) {
        this.angle += d;
    } else {
        this.angle -= d;
    }
}


function turtleSetColor(c) {
    this.color = c;
}


function turtleSetWeight(w) {
    this.weight = w;
}


function turtleFace(angle) {
    this.angle = angle;
}


function makeTurtle(tx, ty) {
    var turtle = {x: tx, y: ty,
                  angle: 0.0, 
                  penIsDown: true,
                  color: color(128),
                  weight: 1,
                  left: turtleLeft, right: turtleRight,
                  forward: turtleForward, back: turtleBack,
                  penDown: turtlePenDown, penUp: turtlePenUp,
                  goto: turtleGoTo, angleto: turtleAngleTo,
                  turnToward: turtleTurnToward,
                  distanceTo: turtleDistTo, angleTo: turtleAngleTo,
                  setColor: turtleSetColor, setWeight: turtleSetWeight,
                  face: turtleFace};
    return turtle;
}

I really enjoyed doing this project. I had originally intended for the swirls to make a continuous line across the screen but after multiple tries I couldn’t seem to get them to follow each other. I think using turtle to create visuals is very fun and makes it a lot easier because it allows me to create individual shapes and patterns, like these swirls that can be moved all together without having to individually put in each value. next time I would like to try to figure out to create these patterns but have them be all connected with each other in a nice line.