Month: November 2018

sketch

/*
Victoria Reiter
Section B
vreiter@andrew.cmu.edu
Assignment-10-b
*/

// makes turtle
var turtle;
// angle for the pretty plant design thing!
var chooseAngle = 200;

//makes plus shape
function plus() {
        turtle.penDown();
        turtle.forward(5);
        turtle.left(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
        turtle.left(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
        turtle.left(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
        turtle.left(90);
        turtle.forward(5);
        turtle.right(90);
        turtle.forward(5);
}

function setup() {
    createCanvas(600, 400);
    background(80, 0, 255);
    // makes turtle at center of canvas
    turtle = makeTurtle(width / 2, height / 2);
    turtle.setColor(color(202, 255, 112, 80));
    turtle.setWeight(.25);
    turtle.penUp();    
}

function draw() {
    plus(20, 30);
    for (var i = 0; i < 100; i++) {
        var distt = mouseX / 7;
        turtle.penUp();
        turtle.forward(distt);
        plus();
        turtle.penUp();
        // returns turtle to center so it progressively moves greater distances
        turtle.back(distt);
        // rotates by golden angle
        turtle.left(chooseAngle);
    }

}


// --------------------------------
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;}

///GRACE DAY TAKEN///

For this week’s project I took inspiration from the “golden angle” and natural angles of plants and things in nature from last week. I wanted to know what it would be like if I manipulated it to work through an angle of my choosing, and other aspects of my choosing, such as a plus shape instead of hexagons. I made the stroke weight very fine and the opacity more sheer to add added effects. I also introduced animation by incorporating variation with mouseX.

I think this design is interesting because as you move the mouse, it looks as though there is a flower itself in the middle rotating around and around, but really it’s just the shapes building on themselves. How interesting!

((This is unrelated but I went to the Children’s Museum today and saw the Letter Rain mentioned in the Deliverables for the week and that wE. cOdED. so I thought that was cool! Here’s a quick picture just for fun hehehe))

click to change colors

sketch

//Xiaoying Meng
//B
//xiaoyinm@andrew.cmu.edu
//Project 11
var myTurtle;
var R = [255,200,150,100,50,0];
var G = [255,200,150,100,50,0];
var B = [0,50,100,150,200,255];
var i=0;

function triangles(){
    for (var i = 0; i < 3; i++){
        myTurtle.penDown();
        myTurtle.forward(5);
        myTurtle.left(120);
    }
}

function setup() {
    createCanvas(480, 400);
    background(0);
}
function mousePressed(){
    //change colors
    i = i+1;
    if (i===5){
        i=0;
    }
}
function draw() {
    myTurtle = makeTurtle(480-mouseX,400-mouseY);
    myTurtle.setColor(color(R[i],G[i],B[i]));
    myTurtle.penUp();

    for (var x=0; x< 100; x++){
        myTurtle.penUp;
        //go out
        var dist = x*2;
        myTurtle.forward(dist);
        
        //draw
        triangles();

        //go back
        myTurtle.penUp();
        myTurtle.left(180);
        myTurtle.forward(dist);
        myTurtle.left(180);

        //rotate angle based on location of mouseX
        var a =180*(3-sqrt(5))-mouseX/100;
        myTurtle.left(a);
    }
}


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 wanted to create something interactive with the turtles. Allowing the users to draw with them. But to add some interesting factors, I made the turtle go the opposite direction of the mouse and the “pen” rotate according to mouseX.

sketch

/*
Romi Jin
Section B
rsjin@andrew.cmu.edu
Project-11
*/


function setup() {

    createCanvas(480, 480);
    background("black");

}

function draw() {

    var myTurtle = makeTurtle(width/2, height/2);
    myTurtle.penDown();
    myTurtle.setColor("white");
    myTurtle.setWeight(0.05);
    strokeJoin(MITER);
    strokeCap(PROJECT);
    var step = 1; //different patterns

    for (i = 0; i <= 150; i++) { 

        //flower drawing
        myTurtle.forward(step);
        myTurtle.left(step);
        myTurtle.forward(step);
        myTurtle.left(step);
        myTurtle.forward(step);
        myTurtle.left(step);
        myTurtle.forward(step);
        myTurtle.left(step);

        //angle
        myTurtle.right(200);
        //spacing
        myTurtle.forward(i*3);
    }

}


/////////////////////////////////////////////////////////////

//turtle code

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 project, I decided to play around with angles and lines and see what kind of shapes I could make with different patterns and sizing. I eventually ended up with a flower / pinwheel, drawn spiraling out to a certain angle. It was interesting to see the difference between using turtle graphics to draw this versus not using it.