Tapeworm

///////  t a p e w o r m  ////////////  ///////

                                       //  //   //

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

                                                    //

      ////// (c) martin schneider 2010 ////// ///////

     //

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

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

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

     //                                            //

    //////// p5.js version 2016 ////////////////////

​

​

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

   //                 PARAMETERS                    //

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

​

// color theme is dark

var dark = false;

​

// activate physics

var assemble = true;

​

// collision detection iteration cycles

var maxiter = 10;

​

// radius of the bubble

var bblsize = 8;

​

// cellwall thickness

var cellwall = 8;

​

// speed of bubble movement

var speed = 5;

​

// speed of gravity

var gravity = 5;

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// number of bubbles, after which the color cycle should repeat

var cycle = 100;

​

// a variable that controls if the simulation is running

var paused = false;

​

​

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

   //                 GLOBAL VARIABLES              //

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

​

var bubbles = [];

var bblcount = 0;

​

// color variables

var bg0, bg1, c1,c2;

​

​

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

   //                 MAIN CODE                     //

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

​

function setup() {

​

  createCanvas(1112, 834);

  noStroke();

​

  // create color objects

  bg0 = color(0);

  bg1 = color(255, 45);

  c1  = color("#ff6666");

  c2  = color("#6666ff");

​

}

​

​

function draw() {

​

  if(paused) {return;}

​

  var n = bubbles.length;

​

  // blur background

  fill(dark ? bg0 : bg1);

  rect(0, 0, width, height);

​

  // move bubbles

  for(var i = 0; i < n; i++) {

    bubbles[i].move();

  }

​

  // resolve collisions

  for(var cc = 0; cc < maxiter; cc++) {

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

      bubbles[i].collides();

    }

  }

​

  // draw bubbles

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

    bubbles[i].draw();

  }

​

  // user interaction for adding bubbles

  //interaction();

​

}

​

​

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

   //                 MY FUNCTIONS                  //

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

​

// mouse interaction, called explicitly from the draw loop

function mouseReleased() {

    // create a new bubble at the mouse pointer position

    var b = new Bubble(mouseX, mouseY, bblsize, bblcount);

​

    // let's only add the bubble if no collision occurs

    if(!b.collides()) {

      bubbles.push(b);

      bblcount++;

    }

}

​

​

// draw a bubble at (x, y) with radius r

function bubble(x, y, r,  cellColor, wallColor) {

​

  // draw cell wall

  fill(wallColor);

  ellipse(x, y, 2*r, 2*r);

​

  // draw cell core

  fill(cellColor);

  ellipse(x, y, 2*r-cellwall, 2*r-cellwall);

​

}

​

​

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

   //                 INTERACTION                   //

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

​

// adjust canvas to fill the entire window

function windowResized() {

  resizeCanvas(width, height);

}

​

​

// keyboard interaction

function keyTyped() {

​

  switch(key) {

​

    // [SPACE] to toggle attraction

    case ' ':

      assemble = !assemble;

      break;

​

    // [p] to play / pause

    case 'p':

      paused = !paused;

      break;

​

    // [c] for color scheme

    case 'c':

      dark = !dark;

      break;

​

    // [+] for faster

    case '+':

      speed++;

      break;

​

    // [-] for slower

    case '-':

      speed--;

      break;

​

    // [r] for reset

    case 'r':

      bubbles = [];

      bblcount = 0;

      break;

    // [s] for save screwenshot

    case 's':

      save("img_" + month() + '-' + day() + '_' + hour() + '-' + minute() + '-' + second() + ".jpg");

      break;

  }

​

  // add speed limit

  speed = constrain(speed, 1, 2*bblsize);

​

}

​

​