mstropka-Project-11-E

sketch

function setup() {
    createCanvas(400, 400);
    background(0);
    strokeJoin(MITER);
    strokeCap(PROJECT);

}

function mousePressed(){

  drawturtles(mouseX, mouseY);

}

function drawturtles() {
  var t1 = makeTurtle(mouseX + 20, mouseY);
  var t2 = makeTurtle(mouseX - 20, mouseY);
  var t3 = makeTurtle(mouseX, mouseY + 20);
  var t4 = makeTurtle(mouseX, mouseY - 20);

  t1.penDown;
  t2.penDown;
  t3.penDown;
  t4.pendown;
  for(var i = 0; i < 480; i++){
    stroke(random(0,255),0,0);
    t1.forward(random(0,40));
    t1.right (random(0, 180));
    t1.forward (random(0,40));

    stroke(random(0,255), random(0,255), random(0,255));
    t2.forward(random(0,40));
    t2.right (random(0, 180));
    t2.forward (random(0,40));

    stroke(random(0,255), random(0,255), random(0,255));
    t3.forward(random(0,40));
    t3.right (random(0, 180));
    t3.forward (random(0,40));

    stroke(random(0,255), random(0,255), random(0,255));
    t3.forward(random(0,40));
    t3.right (random(0, 180));
    t3.forward (random(0,40));


  }
}
function draw() {
  }


  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;}

For this week’s assignment, I made a program in which four turtles are drawn around the mouse when it is clicked. They move forward and right by random increments until they move off of the canvas.