jacksund

Sorry to disappoint, but I don’t have any examples. As far I as I know, I’m the only one trying to script with this method. I have everything working (Verge3D + Blender + Django -> all in python), but I can’t publish it yet as much of the code includes my progress towards a research publication (I’m a chemist). I will say that this full python approach isn’t ideal for non-scientists. In 99% of cases, it’s best to go with javascript, which is probably why I’m the only one doing it.

You can get Verge3d + Blender working in python using the steps I describe above (#20753) – note that if the bpy module doesn’t work, then you have to build it yourself. The tricky part is throwing Django in the mix, which I don’t describe here.

Depending on what you’re trying to accomplish, maybe I could give some guidance…? Otherwise, I can’t point you to a github example until I publish my research. Sorry!

-Jack

Looks like this only works if load=<relative_path>, where the file is also on the cdn.soft8soft.com server. Web browsers throw an error when I try load=<url_path>, such as load=https://mywebsite.com/chemical-id/example.gltf. This is blocked because it is a cross-origin request, which looks to be flagged as a security issue.

Here’s the html error:

Access to XMLHttpRequest at ‘http://mywebsite.com/chemical-id/chemical.gltf&#8217; from origin ‘https://cdn.soft8soft.com&#8217; has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

There’s also a warning on the webpage:

A cookie associated with a cross-site resource at http://soft8soft.com/ was set without the SameSite attribute. A future release of Chrome will only deliver cookies with cross-site requests if they are set with SameSite=None and Secure.

So maybe I just need to set up permissions correctly…? I’m not sure if that opens up security issues for my site though. It is probably better if I don’t combine locally made files with a CDN.

For three.js, loading a gltf looks pretty easy (see below). Is there an analogous command like v3d.GLTFLoader()?

var loader= new THREE.GLTFLoader();
loader.load(
  'http://mywebsite.com/chemical-id/chemical.gltf', 
  function(gltf) { scene.add(gltf.scene); },
  undefined, 
  function (error) { console.error(error); }
);

I’m unfortunately unable to get this to work. bpy looks like it loads all add-ons when it initializes, so verge3D needs to be in that directory when I use ‘import bpy’. I’ve also tried this, but I’m still getting errors.

Currently bpy (as installed via anaconda : https://anaconda.org/kitsune.one/python-blender) throws an error with all add-ons. Trying to make my own build of bpy is failing at the build stage as well — though this is just because of my inexperience with cmake.

I’ve even tried adding all of blender’s python path to my external python, but without any luck there. Errors are thrown when the module tries importing binaries (e.g. import _bpy).

I’ll likely link this discussion to a post in the general blender forums because I need help with the build bpy module.

-Jack

I do have scripts successfully running by that method, but that’s actually the reverse of what I’d like to do! With this approach, you always need to run scripts via the ‘blender’ command, which in turn checks for a built-in python. You also can remove the built-in python from blender, and the ‘blender -P’ command will fall back to the system’s default python. That’s a step in the right direction, but it’s not useful for when you want to add bpy functionality to your existing scripts without being forced to use the ‘blender -P’ command instead of ‘py’.

In my case, I have a conda enviornment with a bunch of high-level modules (django, scipy, plotly, pymatgen, etc.), where I’d add bpy to the server’s functionality — rather than change to running every app/script with the command ‘blender’ instead of ‘py’. If this is possible, then the bpy module becomes much much more accessible to those that have complex environments already built – particularly those that run a django server and those in data science research (like me!).

The two links that I sent in my original post make the stand-alone python module for blender — I’d like to replicate that with blender 2.80 + Verge3D. So far I’m struggling to do this, but I have since found instructions on building Blender (without Verge3D): https://wiki.blender.org/wiki/Building_Blender/Other/BlenderAsPyModule

I’m close, but I need help building the module with Verge3D incorporated. Alternatively, we can make a bpy module via the method in the link above and then make a separate Verge3D module that uses bpy as a dependency. I’m not sure which route would be easiest.

-Jack