led.js

var width = 13;
var height = 13;

var pixelCount = width * height * 3; 

var rgb = new Uint8ClampedArray(pixelCount);
//var g = Object.create(g.__proto__.constructor["prototype"]);
var g = Graphics.createArrayBuffer(13, 13, 24, {zigzag:true, color_order: 'brg'});
g.buffer = new ArrayBuffer(pixelCount);
g.flip = function () {SPI2.send4bit(g.buffer, 0b0001, 0b0011);};
var pos = 50;
var logo = 1;
var arr = [  ];
function fillRand(c) {
  for (var i = 0; i < c*3; i++) {
    var l = E.hwRand().toString();
    var n = parseInt(l[2]+l[3]+l[4]);
    if (n <= 255) arr.push(n);
    if (n > 255) {
      c = c -1;
    }
  }
SPI2.send4bit(arr, 0b0001, 0b0011);
}
/*function hue2rgb(p, q, t) {
  if (t < 0) t += 1;
  if (t > 1) t -= 1;
  if (t < 1/6) return p + (q - p) * 6 * t;
  if (t < 1/2) return q;
  if (t < 2/3) return p + (q - p) * (2/3 - t) * 6;
  return p;
}
function hslToRgb(h, s, l) {
  var r, g, b;
  if (s == 0) {
    r = g = b = l; // achromatic
  } else {
    var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
    var p = 2 * l - q;
    r = hue2rgb(p, q, h + 1/3);
    g = hue2rgb(p, q, h);
    b = hue2rgb(p, q, h - 1/3);
  }
  return [ r, g, b ];
}*/
function getRainbowColor(WheelPos) {
  if (WheelPos < 85) {
    return [WheelPos * 3, 255 - WheelPos * 3, 0];
  } else if (WheelPos < 170) {
    WheelPos -= 85;
    return [255 - WheelPos * 3, 0, WheelPos * 3];
  } else {
    WheelPos -= 170;
    return [0, WheelPos * 3, 255 - WheelPos * 3];
  }
}

max_index = 13 * 13
off = 0

function getColor(progress) {
  console.log(progress);
  var rgb = hslToRgb(progress,1,.5)
    var c = [rgb[0]*255, rgb[1]*255, rgb[2]*255]
    return c
}
  function offset(n, i, m){
    return (n + i) % m
  }

function lightsOff() {
  pos++;
  for (var i=0;i<rgb.length;i+=3) {
    rgb[i  ] = 0;
    rgb[i+1] = 0;
    rgb[i+2] = 0;
  }
  SPI2.send4bit(rgb, 0b0001, 0b0011);
}
var patterns = [
  function () {
  "compile";
  pos++;
  for (var i=0;i<rgb.length;i+=3) {
     //rgb[i  ] = (1 + Math.sin((i+pos)*0.1324)) * 127;
    rgb[i  ] = (1 + Math.sin((i+pos)*0.124)) * 127;
     rgb[i+1] = (1 + Math.sin((i+pos)*0.1654)) * 127;
     rgb[i+2] = (1 + Math.sin((i+pos)*0.1)) * 127;
  }
},
  function () {
  "compile";
  pos++;
  for (var i=0;i<rgb.length;i+=3) {
     var col = (Math.sin(i+pos*0.2)+1) * 127;
     rgb[i  ] = col;
     rgb[i+1] = col;
     rgb[i+2] = col;
  }
},
  function () {
  "compile";
  for (var i=0;i<rgb.length;i+=3) {
     rgb[i  ] = Math.random()*255;
     rgb[i+1] = 0;
     rgb[i+2] = 0;
  }
},
  function () {
  "compile";
  for (var i=0;i<rgb.length;i+=3) {
     rgb[i  ] = 0;
     rgb[i+1] = Math.random()*255;
     rgb[i+2] = 0;
  }
},
  function () {
  "compile";
  for (var i=0;i<rgb.length;i+=3) {
     rgb[i  ] = 0;
     rgb[i+1] = 0;
     rgb[i+2] = Math.random()*255;
  }
 },
  function () {
   
  pos++;
  for (var i=0;i<rgb.length;i+=3) {
    rgb[i  ] = 0;
    rgb[i+1] = 0;
    rgb[i+2] = 0;
    }
  },
  function () {
  pos++;
  off = (pos / 10) % 1;
  for (var i=0;i<rgb.length;i+=3) {
    a  = i/3;
    // i = x + y*width
    var x = (a % 26);
    var y = parseInt(a / 13) + 1;
    if (x > 12) {
      x = 25 - x;
    }
    var step = 1. / max_index;

    t = getRainbowColor(parseInt(offset(x * y * step, off, 1)*255));
    //console.log(t);
    rgb[i  ] = t[0];
    rgb[i+1] = t[1];
    rgb[i+2] = t[2];
  }
  SPI2.send4bit(rgb, 0b0001, 0b0011);
}
 ];
function getRandom() {
  var r = getTime() * 10000;
  r -= parseInt(r);
  r = Math.round(r *100) / 100;
  return r;
}
function alpaca() {
  "compile";
  g.clear();
  g.setRotation(0, true); // reflect horizontally, display is wired up right to left
  //set color (=blue) for rectangles
  g.setColor(0.106,0.875,0.655);
  //draw rectangles
  g.drawRect(2,1,3,1);
  g.drawRect(9,1,10,1);
  g.drawRect(1,2,4,2);
  g.drawRect(8,2,11,2);
  g.drawRect(1,3,11,3);
  g.drawRect(1,4,11,4);
  g.drawRect(1,5,11,5);
  g.drawRect(1,5,10,5);
 // g.drawRect(10,5,11,5);
  //set individual pixels
  g.setPixel(1,6);
  g.setPixel(11,6);
  g.setPixel(1,7);
  g.setPixel(11,7);
  g.setPixel(1,8);
  g.setPixel(11,8);
  // even more rectangles (#todo: use .fillRect instead)
  g.drawRect(1,9,2,9);
  g.drawRect(10,9,11,9);
  g.drawRect(2,10,3,10);
  g.drawRect(9,10,10,10);
  g.drawRect(3,11,9,11);
  //g.drawRect(3,11,8,11);
  // set color white
  g.setColor(255,255,255);
  // rectangles!
  g.drawRect(3,5,9,5);
  g.drawRect(2,6,9,6);
  g.fillRect(2,7,10,8);
  g.fillRect(3,9,9,9);
  g.drawRect(4,10,8,10);
  g.setPixel(10,6);
  // set color black, set pixels
  g.setColor(0,0,0);
  g.setPixel(3,7);
  g.setPixel(9,7);
  g.setPixel(5,8);
  g.setPixel(7,8);
  g.setPixel(5,9);
  g.setPixel(6,9);
  g.setPixel(7,9);
  g.flip();
}
var getPattern = function() {
  "compile";
  pos++;
  for (var i=0;i<rgb.length;i+=3) {
    //rgb[i  ] = (1 + Math.sin((i+pos)*0.1324)) * 127;
    rgb[i  ] = (1 + Math.sin((i+pos)*0.124)) * 127;
    rgb[i+1] = (1 + Math.sin((i+pos)*0.1654)) * 127;
    rgb[i+2] = (1 + Math.sin((i+pos)*0.1)) * 127;
  }
};
function doLights() {
    
  if (logo % patterns.length === 0) {
    alpaca();
  } else {
    getPattern();
    SPI2.send4bit(rgb, 0b0001, 0b0011);
  }
}
var patternNumber = 5;
function changePattern() {
  patternNumber = (patternNumber+1) % patterns.length;
  getPattern = patterns[patternNumber];
}
var cycle = 1;
//setInterval(doLights, 200);

setInterval(function(e){
  var start = new Date().getTime();
    doLights();
    var end = new Date().getTime();
    console.log(end - start);
},1);

/*setInterval(function(e){
    alpaca();
    g.setColor(255, 255, 255);
    g.setPixel(9,7);
    g.flip();
    
    setTimeout(alpaca, 800);
}, 4000);*/

setTimeout(function (e) {
    logo++;
    changePattern();
}, 200);
//Executed when button pressed
/*setWatch(function (e) {
    logo++;
    changePattern();
}, "A5", { repeat:true, edge:'falling', debounce : 49.99923706054 });*/
SPI2.setup({"baud":3200000,"mosi":B15});
pinMode(B15, "af_output", true);
save();