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adds randomly noice to the images #237

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adds randomly noice to the images #237

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20 changes: 18 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,19 @@ const {
const console = require("console");
const canvas = createCanvas(width, height);
const ctx = canvas.getContext("2d");

//add noise to the images randomly
const drawNoise = (ctx, width, height, opacity) => {
const imageData = ctx.createImageData(width, height);
const data = imageData.data;
for (let i = 0; i < data.length; i += 4) {
const value = Math.random() * 255;
data[i] = value;
data[i + 1] = value;
data[i + 2] = value;
data[i + 3] = opacity * 255;
}
ctx.putImageData(imageData, 0, 0);
};
// saves the generated image to the output folder, using the edition count as the name
const saveImage = (_editionCount) => {
fs.writeFileSync(
Expand Down Expand Up @@ -217,7 +229,7 @@ const startCreating = async () => {

// elements are loaded asynchronously
// -> await for all to be available before drawing the image
await Promise.all(loadedElements).then((elementArray) => {
await Promise.all(loadedElements).then(async (elementArray) => {
// create empty image
ctx.clearRect(0, 0, width, height);
// draw a random background color
Expand All @@ -228,7 +240,11 @@ const startCreating = async () => {
elementArray.forEach((element) => {
drawElement(element);
attributesList.push(getAttributeForElement(element));
drawElement(element);
});
if(applyNoise){
drawNoise(ctx,width,height,0.1)
}
// add an image signature as the edition count to the top left of the image
signImage(`#${editionCount}`);
// write the image to the output directory
Expand Down