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#Blender 3d animation nodes force fields how to
#Blender 3d animation nodes force fields software
#Blender 3d animation nodes force fields code
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We will pick all of our values at random and there will be no logical relationship whatsoever between the distance to the sun, the radius and the surface colour of the planets. Now, let’s be clear: this will not be a physical simulation.

#Blender 3d animation nodes force fields how to

To see how powerful Blender’s Python API can be and how to use it, let’s work on a basic example: instantiating a bunch of planets around a sun (all being simple spheres) with random size, speed and colour, and having the planets rotate around the sun along circular orbits. Spawning and animating a random solar system! The idea is to start off with random values and then somehow “ control the craziness” so it is valid. There are plenty of tools for generation engines – and to be honest, a large amount relies on randomness. Procedural generation is a very vast and complex topic.

#Blender 3d animation nodes force fields software

But, of course, it’s usually a bit harder than hand-design because you need to teach your software the right and wrong patterns (i.e., the “rules”). The big advantage is that, once you’re done making the engine, you can create as many instances as you want! Moreover, this generation can be pretty quick, dynamic depending on given conditions and infinite (for example for never-ending games like runners). I’ve already discussed the benefits of this approach in other articles roughly put, procedural generation is about defining a set of rules and a machine that uses those rules to automatically create valid instances. Today, we’ll focus on generating objects thanks to this API, so we’ll be doing some procedural generation.

bpy.ops: that’s the real meat of the API – it’s what allows you to perform actions and call operators on your objects or your views it’s basically how you can simulate user actions via scripting (like selecting an object, entering edit mode, applying subdivisions, changing to “flat” shading, maximising a window…).

bpy.data: it gives you access to the resources in your scene (the objects, the materials, the meshes…) so you can load, add or delete them.

the panel in your window) that is currently being accessed

bpy.context: it contains getters and readers on read-only values that describe your current working context or even the area (i.e.

The API in itself, bpy (for “Blender Python”), can be browsed on Blender’s specific docs it is subdivided in several submodules, the 3 most important / commonly used being: Moreover, the fact that it’s in Python, a language famous for being easy-to-learn and for which there is just an endless number of tutorials on the net, makes it neat for beginners to dive in (without the fear of old C/C++-based APIs that required, in my opinion, higher coding skills…).īy the way: this Python API is not just a shiny toy for wannabe-devs: it’s actually part of the Blender soft itself and it’s used internally by the program as a core tool, although the user inputs and the results are wrapped in a user-friendly UI 😉 There are, in truth, lots of use cases where it can be useful to automate a task: whether you want to quickly randomise your scene population algorithm, count objects and get custom stats on your scene or even create an entire world from scratch that can be reproduced accurately with seeds… having a way to integrate procedural generation or tailor-made tools directly into a CG context is just an amazing opportunity! I mean: why embed a creative tool with stuff for coders?

You might be wondering why it’s interesting to have a Python API for a 3D soft. Ok, now: how does Blender allow us to “program a scene”? Via its Python API.

#Blender 3d animation nodes force fields code

Today, I want to show how this programmatic approach to Blender allows you to instantly create a basic solar system like this one:Īre you ready? Then let’s dive in! 🙂 If you want to get the code directly,i t's available as a Github gist 🚀 But Blender, just like its competitors, also has another side for developers: a way to program your 3D scenes. So, yes – at first, CGI software is primarily aimed at artists. This has introduced a profound change of mindframe in the world of 3D because it showed people that anyone could try and have a go at this form of art and that it could achieve pretty incredible results.

#Blender 3d animation nodes force fields free

… while it is completely free and open-source!

Did you know that you could program in Blender to automatically create 3D objects and animations?īlender is a well-known piece of software for 3D modeling, sculpting, texturing, animation and more! As the versions kept on coming out, this tool has slowly earned its place in the CGI industry, so much so that there are now a few long-feature films that are made entirely using Blender and that there are Youtube channels like Blender Guru entirely dedicated to learning the ins and outs of this soft…