Function that convert an equirectangular/latlong map into an array of cubemap faces (like you would use to send to OpenGL).
This is a 'node-ified' wrap around ThomCC's implementation
Relies on node-canvas which can run without a GPU dependency (which means it will run on a cheap EC2 instance). For installation instructions for node-canvas (which requires Cairo and Pango), refer to their relevant readme
npm i node-equirect-cubemap-faces
Example:
const NodeEquirectToCubemap = require('node-equirect-cubemap-faces');
NodeEquirectToCubemap.fromFile('Hallway_seq.005.jpg', 512).then(faces => {
faces.map((img, index) => {
// writes pngs to a file (in this case, 'face_top.png', 'face_left.png', etc.)
let out = fs.createWriteStream(__dirname + '/face_' + NodeEquirectToCubemap.order[index] + '.png');
let str = img.pngStream();
str.on('data', chunk => {
out.write(chunk);
});
});
});Or, if you already read a file, just send it through as buffer and run transform like this:
const NodeEquirectToCubemap = require('node-equirect-cubemap-faces');
fs.readFile('Hallway_seq.005.jpg', (err, image) =>
{
NodeEquirectToCubemap.fromImage(image, 1024).then(faces => {
// in this case, the output is written to an Object
let out = {};
for(let i = 0; i < faces.length; ++i)
{
out[NodeEquirectToCubemap.order[i]] = faces[i];
}
console.log(out);
});
});Returns: 6 Images.
The MIT License (MIT)
Copyright (c) 2017 Arthur Dam
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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