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Particles Nodes
Confirmed, NormalPublicTO DO

Authored By
Dalai Felinto (dfelinto)
Jan 22 2020, 6:56 PM
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Description

Status: Project on hold. Active development in this area can be found in the geometry nodes project.


Team

Commissioner: @Brecht Van Lommel (brecht)
Project leader: @Jacques Lucke (JacquesLucke)
Project members: @Sebastián Barschkis (sebbas) @William Reynish (billreynish)

Description

Big picture: Implement a stable (reliable) flexible node based particle system.

Use cases:

  • Motion-graph work that relies on time-based animations.
  • Set dressing of environment elements.
  • Generative weathering of surfaces.
  • Fireworks (particles that spawn new particles).
  • Dew drops on a leaf.

Design:

  • Re-usable effects
  • High level nodes out of the box
  • ? (mental model for different types of nodes)

Engineer plan:

  • C++ libraries in blenlib.
  • New builtin simulation node system.
  • The functions framework with a runtime type system for efficient evaluation of node trees.
  • The particles system that parses a particle node tree and performs the simulation.
Work plan

Milestone 1
Time estimate: 2-4 months

  • Particle nodes
    • Add Simulation node tree type
    • Add placeholders for built-in simulation nodes
    • Add placeholders for built-in function nodes
    • Define list of built-in nodes
    • Define list of group nodes to ship with Blender
    • Define categories and menu organization
    • Finalize naming of nodes and sockets
    • Support for storing ID pointers in sockets for object/image sockets
  • Explore different ways to visualize sockets and links of different type (https://code.blender.org/2020/03/feb-2020-ui-workshop/)
  • New Simulation data-block containing node tree and cache parameters
    • Basic implementation of ID type
    • Dependency graph and copy-on-write integration
  • Point cloud (basic) object type (@Brecht Van Lommel (brecht))
  • Modifier for point cloud copies simulated particles from simulation
  • Simulation caching
  • Functions nodes system
  • Particle solver capable of solving multiple particle simulations with emitters, events and forces (T77266)
  • Find system to ship node groups with Blender (asset system or if not ready, something temporary) (in branch currently)
  • Implement all built-in nodes

Milestone 2 - Feature completion

  • Use cases are supported (particle scattering, weathering, ...).

Unknown Milestone

  • Good collision handling in solver
  • Access any particle attribute in material
  • Access particle data from Python

Relevant links:

Event Timeline

There are a very large number of changes, so older changes are hidden. Show Older Changes
Gad (gadas) added a subscriber: Gad (gadas).
Colin (Kdaf) added a subscriber: Colin (Kdaf).
Arken awarded a token.Jun 20 2020, 2:41 PM

I wish you can create a more powerful "Keyed Physics" in the new particle system. I wish we can morph between objects easily without limitation (e.g. The two objects has to have the same number of vertices). I really want to thank all the people and developers who work on blender. You are really great and fantastic people. Good job and god bless you all.

Jacques Lucke (JacquesLucke) lowered the priority of this task from High to Normal.Nov 19 2020, 5:39 PM

@Doeke (clankill3r) the Blender subpage of stackexchange is not hosted or moderated by the blender.org project. So I can't respond to the accuracy of their information.

The particles project itself is on hold, waiting for the geometry nodes project to cover that topic.

If you want to join early adopters go to: https://devtalk.blender.org/t/geometry-nodes/16108

But isn't there an old version somewhere that I can download?

I wish you start doing particle nodes soon. They are more interesting that geo nodes.