y = M.codes[i][0].position.y - height;
c = M.codes[i][0].canvas;
ctx = c.getContext('2d');
M.ctx.drawImage(c, x, y, M.settings.COL_WIDTH, height);
if ((M.codes[i][0].position.y - height) < M.HEIGHT) {
M.codes[i][0].position.y += velocity;
} else {
M.codes[i][0].position.y = 0;
}
}
}
},
createCode: function() {
if (M.codesCounter > M.COLUMNS) {
clearTimeout(M.createCodeLoop);
return;
}
var randomInterval = M.randomFromInterval(0, 100);
var column = M.assignColumn();
if (column) {
var codeLength = M.randomFromInterval(M.settings.CODE_LENGTH_PARAMS.min, M.settings.CODE_LENGTH_PARAMS.max);
var codeVelocity = (Math.random() * (M.settings.VELOCITY_PARAMS.max - M.settings.VELOCITY_PARAMS.min)) + M.settings.VELOCITY_PARAMS.min;
var lettersLength = M.letters.length;
M.codes[column][0].position = {
'x': (column * M.settings.COL_WIDTH),
'y': 0
};
M.codes[column][0].velocity = codeVelocity;
M.codes[column][0].strength = M.codes[column][0].velocity / M.settings.VELOCITY_PARAMS.max;
for (var i = 1; i <= codeLength; i++) {
var newLetter = M.randomFromInterval(0, (lettersLength - 1));
M.codes[column][i] = M.letters[newLetter];
}
M.createCanvii(column);
M.codesCounter++;
}
M.createCodeLoop = setTimeout(M.createCode, randomInterval);
},
createCanvii: function(i) {
var codeLen = M.codes[i].length - 1;
var canvHeight = codeLen * M.settings.COL_HEIGHT;
var velocity = M.codes[i][0].velocity;
var strength = M.codes[i][0].strength;
var text, fadeStrength;
var newCanv = document.createElement('canvas');
var newCtx = newCanv.getContext('2d');
newCanv.width = M.settings.COL_WIDTH;
newCanv.height = canvHeight;
for (var j = 1; j < codeLen; j++) {
text = M.codes[i][j];
newCtx.globalCompositeOperation = 'source-over';
newCtx.font = '30px matrix-code';
if (j < 5) {
newCtx.shadowColor = 'hsl(104, 79%, 74%)';
newCtx.shadowOffsetX = 0;
newCtx.shadowOffsetY = 0;
newCtx.shadowBlur = 10;
newCtx.fillStyle = 'hsla(104, 79%, ' + (100 - (j * 5)) + '%, ' + strength + ')';
} else if (j > (codeLen - 4)) {
fadeStrength = j / codeLen;
fadeStrength = 1 - fadeStrength;
newCtx.shadowOffsetX = 0;
newCtx.shadowOffsetY = 0;
newCtx.shadowBlur = 0;
newCtx.fillStyle = 'hsla(104, 79%, 74%, ' + (fadeStrength + 0.3) + ')';
} else {
newCtx.shadowOffsetX = 0;
newCtx.shadowOffsetY = 0;
newCtx.shadowBlur = 0;
newCtx.fillStyle = 'hsla(104, 79%, 74%, ' + strength + ')';
}
newCtx.fillText(text, 0, (canvHeight - (j * M.settings.COL_HEIGHT)));
}
M.codes[i][0].canvas = newCanv;
},
swapCharacters: function() {
var randomCodeIndex;
var randomCode;
var randomCodeLen;
var randomCharIndex;
var newRandomCharIndex;
var newRandomChar;
for (var i = 0; i < 20; i++) {
