Added /pride

This commit is contained in:
CBenni 2018-02-25 18:47:47 +01:00
parent b262c002af
commit a3ab0e3ef7
5 changed files with 64 additions and 6 deletions

View file

@ -436,6 +436,23 @@
"size": 1200
}
}
},
"pride": {
"src": "./resources/PrideOverlay.png",
"z": 2,
"anchor": {
"x": {
"position": 0,
"offset": 0,
"size": 512
},
"y": {
"position": 0,
"offset": 0,
"size": 512
}
},
"filter": "pride"
}
}
}

31
filters.js Normal file
View file

@ -0,0 +1,31 @@
const _ = require('lodash');
const Canvas = require('canvas');
const { _drawImage } = require('./imageex');
const { createCanvas, Image } = Canvas;
const filters = {
pride: (canvas, source, x, y, props) => {
_.each(canvas.frames, frame => {
const tmpCanvas = createCanvas(frame.canvas.width, frame.canvas.height);
const tmpCtx = tmpCanvas.getContext('2d');
_drawImage(tmpCtx, frame.canvas, x, y, props);
const multiplyProps = _.extend({}, props, { attributes: { globalCompositeOperation: 'multiply' } });
_drawImage(tmpCtx, source.frames[0].canvas, x, y, multiplyProps);
const tmpCanvas2 = createCanvas(frame.canvas.width, frame.canvas.height);
const tmpCtx2 = tmpCanvas2.getContext('2d');
_drawImage(tmpCtx2, frame.canvas, x, y, props);
const sourceInProps = _.extend({}, props, { attributes: { globalCompositeOperation: 'source-in' } });
_drawImage(tmpCtx2, source.frames[0].canvas, x, y, sourceInProps);
const combineProps2 = _.extend({}, props, { attributes: { globalCompositeOperation: 'source-atop', globalAlpha: 0.9 } });
_drawImage(frame.ctx, tmpCanvas2, x, y, combineProps2);
const combineProps = _.extend({}, props, { attributes: { globalCompositeOperation: 'source-atop', globalAlpha: 0.8 } });
_drawImage(frame.ctx, tmpCanvas, x, y, combineProps);
});
return canvas;
}
};
module.exports = filters;

View file

@ -289,5 +289,6 @@ class CanvasEx {
module.exports = {
CanvasEx,
ImageEx
ImageEx,
_drawImage
};

View file

@ -9,6 +9,8 @@ const twemoji = require('./twemoji');
const app = express();
const config = require('./config.default.json');
const filters = require('./filters.js');
try {
_.extend(config, require('./config')); // eslint-disable-line global-require
} catch (err) {
@ -113,10 +115,11 @@ function render(template, img, size, flipH) {
w: template.image.width * templateScale,
name: `template ${template.src}`,
flipH,
attributes: template.attributes
attributes: template.attributes,
filter: filters[template.filter]
}].sort((u, v) => u.z > v.z);
const canvas = new CanvasEx(resultingWidth, resultingHeight);
let canvas = new CanvasEx(resultingWidth, resultingHeight);
for (let i = 0; i < toDraw.length; ++i) {
const subject = toDraw[i];
@ -127,9 +130,15 @@ function render(template, img, size, flipH) {
transform.translate = [resultingWidth, 0];
transform.scale = [-1, 1];
}
canvas.drawImage(subject.image, subject.x, subject.y, {
width: subject.w, height: subject.h, transform, attributes: subject.attributes
});
if (subject.filter) {
canvas = subject.filter(canvas, subject.image, subject.x, subject.y, {
width: subject.w, height: subject.h, transform, attributes: subject.attributes
});
} else {
canvas.drawImage(subject.image, subject.x, subject.y, {
width: subject.w, height: subject.h, transform, attributes: subject.attributes
});
}
} catch (err) {
console.error(err);
throw new Error(JSON.stringify({ status: 400, error: 'Invalid template' }));

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resources/PrideOverlay.png Normal file

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