tmpad color pressure

test.js

var serial = require('./lib/serial')
  , Tpad = require('./lib/tpad')
  , color = require('color')
  ;

serial.init()

var spinnerTimer = function () {}

serial.on('searching', function() {
  process.stdout.write('searching  ');
  spinnerTimer = setInterval(function() {
    process.stdout.write(spinner[spinnerPos]);
    spinnerPos++;
    if (spinnerPos >= spinner.length) {
      spinnerPos = 0;
    }
  }, 50);
});

serial.on('connected', function(config) {
  clearInterval(spinnerTimer)

  console.log('\n\nconnected to a', config.tpad.name, 'with', config.tpad.pads, 'pads')

  var currentSerialPort = config.serialport
  var tpad = new Tpad(config)

  var colors = 
    [ '#1B28E0'
    , '#E30B0B'
    , '#07FA34'
    , '#FAA507'
    ]
  
  var index = 0
    , count = 0
    ;

  // tpad.animate(200, [0,1,2,3], function(pad) {
  //   tpad.color('000'); // turn all the lights off
  //   pad.color(colors[index]); // turn the current pad red
  //   count++
  //   if (count === 4) {
  //     if (index === 3) index = 0
  //     else index++
  //     count = 0
  //   }
  // });
  
  var padstats = initStats()
  
  function initStats() {
    return {
      0: {values: [], last: 0},
      1: {values: [], last: 0},
      2: {values: [], last: 0},
      3: {values: [], last: 0}
    }
  }
  
  function average(ary) {
    var sum = 0
    for (var i = 0; i < ary.length; i++) {
        sum += parseInt(ary[i])
    }
    return sum/(ary.length)
  }
  
  function difference(num1, num2) {
    num1 = Math.abs(num1)
    num2 = Math.abs(num2)
    return (num1 > num2) ? num1 - num2 : num2 - num1
  }
  
  function translate(n, sourceLow, sourceHigh, targetLow, targetHigh) { 
    return (n - sourceLow) / (sourceHigh - sourceLow) * (targetHigh - targetLow) + targetLow
  }
  
  var bucketsize = 5
  var colorchangethreshhold = 5
  var lowerpressure = 2000
  var upperpressure = 18000
  var lastTouch

  tpad.each(function(pad, index) {
    
    setInterval(function() {
      if ( (new Date() - lastTouch) > 200 ) {
        pad.color('#609FFF')
        padstats = initStats()
      }
    }, 199)
    
    pad.on('pressure', function(p) {
      lastTouch = new Date()
      var bucket = padstats[p.index]
      if (bucket.values.length > bucketsize) bucket.values.pop()
      if (p.value < lowerpressure) p.value = lowerpressure
      if (p.value > upperpressure) p .value = upperpressure
      var num = translate(p.value, lowerpressure, upperpressure, 0, 255)
      num = Math.floor(num)
      bucket.values.unshift(num)
      var avg = Math.floor(average(bucket.values))
      var val = bucket.last
      if (difference(avg, bucket.last) > colorchangethreshhold) val = avg
      var c = color({r: val, g: 255 - val, b: 255})
      console.log(val, c.hexString())
      p.color(c.hexString())
      bucket.last = val
    });
    
    pad.on('depress', function(p) {
      padstats = initStats()
    });

  });

});

serial.on('disconnected', function() {
  console.log('disconnected');
});

psst. line 67 "sum/ary.length" ;)

DONT JUDGE MY HACKY FUNCODE RICK!

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