ssharada-project11-composition

sketch-132.js

//shariwa sharada 
//ssharada@andrew.cmu.edu
//section a 
//project 11

//setting initial starting points for the turtles
dx = 127
dX = 127

function setup(){
  createCanvas(200, 480);

//creating the turtles using the below trutle commands
  turtle  = new makeTurtle(dx+20, 50);
  turtle2  = new makeTurtle(dx+50, 305);
  turtle3  = new makeTurtle(dx+90, 255);
  turtle4  = new makeTurtle(dx-60, 285);
  turtle5  = new makeTurtle(dx-90, 0);
  turtle6  = new makeTurtle(dx-110, 275);
  turtle7  = new makeTurtle(dx+100, 575);

}

function draw(){

  background(0, 10);
  noFill();

//drawing turtle shapes
  drawShape1();
  drawShape2();
  drawShape3();
  drawShape4();
  drawShape5();
  drawShape6();
  drawShape7();

}

//creating the different circles 
//sizing is varied using  the size of the object moving forward
//speed of the circles moving is depedent on the angle

//the stroke weight of each line depends on the position of the y point of the cursor
//radius of each circle is dependent on the mouseX cursor position

function drawShape1(){
    turtle.setWeight(1 + mouseY/30)
    turtle.right(2 + mouseX/100);
    turtle.forward(1);
}

function drawShape2(){
    turtle2.setWeight(random(2 + mouseY/30,9 + mouseY/30))
    turtle2.right(-3 );
    turtle2.forward(4 + mouseX/100);
}

function drawShape3(){
    turtle3.setWeight(random(1 + mouseY/30, 2 + mouseY/30))
    turtle3.right(6 + mouseX/150);
    turtle3.forward(10);
}

function drawShape4(){
    turtle4.setWeight(random(3 + mouseY/30,6 + mouseY/30))
    turtle4.right(10);
    turtle4.forward(6 + mouseX/175);
}

function drawShape4(){
    turtle4.setWeight(random(4 + mouseY/30, 2 + mouseY/30))
    turtle4.right(10);
    turtle4.forward(6 + mouseX/200);
}

function drawShape5(){
    turtle5.setWeight(random(3 + mouseY/30,6 + mouseY/30))
    turtle5.right(7);
    turtle5.forward(20 + mouseX/225);
}

function drawShape6(){
    turtle6.setWeight(random(1 + mouseY/30, 5 + mouseY/30))
    turtle6.right(-7);
    turtle6.forward(13 + mouseX/250);
}

function drawShape7(){
    turtle7.setWeight(random(1 + mouseY/30, 5 + mouseY/30))
    turtle7.right(-4);
    turtle7.forward(10 + mouseX/250);
}


//-----------------------------------------------------------------------
//-----------------------------------------------------------------------

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(255, random(40, 110)),
                  weight: 5,
                  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;
}

For this project I was inspired by brush strokes and watercolour paint because of which I tried to create these circles by making the flow of the circles the brush stroke style. As the cursor moved, the thickness of the stroke changes like the brush stroke.

^thin line weights with a lower mouseY value

^thick line weights with a higher mouseY value