Is it possible to create a JSON file from a model built with Three.js in Webgl, similar to exporting a JSON model from Blender and loading it with THREE.JSONLoader().load? I would like to know if anyone has experience or information on this.
Is it possible to create a JSON file from a model built with Three.js in Webgl, similar to exporting a JSON model from Blender and loading it with THREE.JSONLoader().load? I would like to know if anyone has experience or information on this.
Before we proceed, I want to make sure I understand your query correctly. Are you looking to package your object3D in a JSON format similar to an .obj file? Essentially, creating a file that can be read and used to generate the geometry in another location at a different time?
It appears that you are aiming to establish a reverse route of "blender -> json -> three.js", is my assumption correct?
In my viewpoint, it is crucial to grasp the coding structure of a model when transforming it into a JSON file. This way, you can mimic the process as though you were working within blender. Subsequently, you would need to develop a serialization method to compile the relevant data into a JSON format.
If your goal is to construct a JSON file that serves as a custom template or alternative to the .obj or .blend formats, then you should also devise a de-serialization approach.
Allow me to clarify further.
Your geometry encompasses vertices, faces, uvs, normals, among other elements. When serializing, you must meticulously outline each of these components in a specific sequence to complete the process successfully. Once you comprehend this paradigm, you will be proficient in reading and de-serializing the data.
If there has been any misunderstanding on my part, please do not hesitate to inform me.
Farewell
Absolutely, it is indeed possible. To achieve this, you will need to have a specific plugin installed in your Blender software in order to export to Three.js.
Get the Plugin from Git: Blender exporter to Three.js
After downloading the plugin, place the io_three folder into your ~/.config/blender/2.69/scripts/addons/ directory.
Next step is to navigate to File > User preferences and move on to the Addons section. Look up Three.js and activate the plugin that appears in the search results. This should give you access to a new option under File menu - Export > Three.js. Make sure to check the Face Materials box on this panel to ensure materials are included, as without them, Three.js may not successfully import your mesh.
Implementation with Three.js
var mesh = null;
function initMesh() {
var loader = new THREE.JSONLoader();
loader.load('./marmelab-logo.json', function(geometry) {
mesh = new THREE.Mesh(geometry);
scene.add(mesh);
});
}
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