Reaction Diffusion is a mathematical model involving two or more interacting elements that spread over a surface and form complex, organic shapes. You can use Geometry Nodes in Blender to create Reaction Diffusion simulations for abstract animations or real-life animal skin patterns, bacteria growth and even chemical interactions. Users can modify parameters like diffusion speeds and reaction strengths to access endless textures that continuously evolve and shift.

Alex Martinelli – Reaction Diffusion (Blender Geometry-Nodes) Features

• Reaction-Diffusion: Use a mathematical model to produce ever-changing organic patterns.
• Geometry Nodes: Fully procedural and customizable in Blender.
• Real-Time: Change parameters and view results instantly.
• 2D & 3D: For the premium mod, this allows simulating on meshes or volumetric grids.
• Gray-Scott: Interact with multiple presets simultaneously (premium version).
• Brush: Influence the simulation in real-time.
• Custom: Displacement, shaders or volumetric rendering can be used to achieve distinct logos.
• Advanced: Alter mesh density to achieve finer details.

Preview Reaction Diffusion

Image 1: Input mesh and Conditioning

Image 2: Mesh Topology and Blur