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/*
Q Light Controller Plus
Noise.js
Copyright (c) Doug Puckett
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0.txt
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Development tool access
var testAlgo;
(
function()
{
var algo = new Object;
algo.apiVersion = 2;
algo.name = "Noise";
algo.author = "Doug Puckett";
algo.properties = [];
algo.acceptColors = 1;
algo.noisePercentage = "High";
var dCounter = 0;
algo.properties.push("name:noisePercentage|type:list|display:Noise Coverage|values:Low,Medium,High|write:setAmount|read:getAmount");
algo.setAmount = function (_amount) {
algo.noisePercentage = _amount;
};
algo.getAmount = function () {
return algo.noisePercentage;
};
// QLC+ rgbMap function where the work is done
algo.rgbMap = function (width, height, rgb, step)
{
var map = new Array(height);
for (var y = 0; y < height; y++)
{
map[y] = [];
for (var x = 0; x < width; x++)
{
var r = (rgb >> 16) & 0x00FF; // split color of user selected color
var g = (rgb >> 8) & 0x00FF;
var b = rgb & 0x00FF;
// create random color level from 1 to 255
var colorLevel = Math.floor(Math.random() * 255);
// Assign random color value to temp variables
var rr = colorLevel;
var gg = colorLevel;
var bb = colorLevel;
// Limit each color element to the maximum for chosen color or make 0 if below 0
if (rr > r) { rr = r; }
if (rr < 0) { rr = 0; }
if (gg > g) { gg = g; }
if (gg < 0) { gg = 0; }
if (bb > b) { bb = b; }
if (bb < 0) { bb = 0; }
var cColor = (rr << 16) + (gg << 8) + bb; // put rgb parts back together
var vDiv = 0; // for noise amount use
// setup for noise reduction :)
switch (algo.noisePercentage)
{
case "Low":
vDiv = Math.random() * 4 + 7;
break;
case "Medium":
vDiv = Math.random() * 5;
break;
case "High":
vDiv = 0;
break;
}
dCounter += 1; // counter for noise trigger
if (dCounter >= vDiv) { // compare counter to user noise amount selection value
dCounter = 0; // clear the counter
map[y][x] = cColor; // set pixel to color created above
}
else {
map[y][x] = 0; // otherwise, clear it
}
}
}
return map;
};
algo.rgbMapStepCount = function (width, height) {
return width * height;
};
// Development tool access
testAlgo = algo;
return algo;
}
)();
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