Is it feasible to load images and models directly from byte arrays in three.js? For instance, downloading a compressed file, extracting it in JavaScript, and feeding the byte array into the loaders?
Thank you
Is it feasible to load images and models directly from byte arrays in three.js? For instance, downloading a compressed file, extracting it in JavaScript, and feeding the byte array into the loaders?
Thank you
Great news, I've located the solutions.
To achieve this task, we can implement our custom extension methods on the relevant objects. For handling texture loading, one way is to load a binary array by introducing a new function to imageutils as shown below:
THREE.ImageUtils.prototype.loadTextureBinary = function ( data, mapping, callback ) {
var image = new Image(), texture = new THREE.Texture( image, mapping );
image.onload = function () { texture.needsUpdate = true; if ( callback ) callback( this ); };
image.crossOrigin = this.crossOrigin;
image.src = "data:image/png;base64," + Base64.encode(data);
return texture;
};
If you need to load JSON in string format, convert your data into a string and utilize the following extension method of JSONLoader:
THREE.JSONLoader.prototype.loadJson = function ( data, callback, texturePath ) {
var worker, scope = this;
texturePath = texturePath ? texturePath : this.extractUrlBase( url );
this.onLoadStart();
var json = JSON.parse( data );
context.createModel( json, callback, texturePath );
};
Note that the code above pertains to Three.js version r49. In case newer versions entail modifications, remember to update these methods accordingly.
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