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greyscale and invert in util

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This commit is contained in:
Daniel Odendahl Jr
2017-10-13 20:55:18 +00:00
parent 1a377f55b5
commit 04668928b1
5 changed files with 31 additions and 35 deletions
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commands/avatar-edit/invert.js
+2 -8
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@@ -1,6 +1,7 @@
const { Command } = require('discord.js-commando');
const { createCanvas, loadImage } = require('canvas');
const snekfetch = require('snekfetch');
const { invert } = require('../../structures/Util');
module.exports = class InvertCommand extends Command {
constructor(client) {
@@ -37,14 +38,7 @@ module.exports = class InvertCommand extends Command {
const canvas = createCanvas(avatar.width, avatar.height);
const ctx = canvas.getContext('2d');
ctx.drawImage(avatar, 0, 0);
const imgData = ctx.getImageData(0, 0, avatar.width, avatar.height);
const { data } = imgData;
for (let i = 0; i < data.length; i += 4) {
data[i] = 255 - data[i];
data[i + 1] = 255 - data[i + 1];
data[i + 2] = 255 - data[i + 2];
}
ctx.putImageData(imgData, 0, 0);
invert(ctx, 0, 0, avatar.width, avatar.height);
return msg.say({ files: [{ attachment: canvas.toBuffer(), name: 'invert.png' }] });
} catch (err) {
return msg.say(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);