Procedural Placement Graph

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Procedural Placement Graph ​

A node-based procedural placement system for Unity. Design scatter workflows visually using a graph editor, then execute to place objects in your scene.

Features ​

  • Visual Graph Editor with real-time preview
  • 53 built-in nodes across 10 categories
  • Attribute system for per-point metadata (float, int, bool, vector, quaternion, string)
  • Spline integration via Unity Splines package
  • Terrain support with layer-based density and steepness
  • Material property transfer via MaterialPropertyBlock
  • Extensible with custom nodes via simple C# interfaces

Quick Start ​

  1. Install the package via Unity Package Manager
  2. Open Window > Procedural Placement Graph > Graph Editor
  3. Create a graph asset and start adding nodes
  4. See Getting Started for a step-by-step tutorial

Documentation ​

User Guide ​

Node Reference ​

  • Generators — Create Points, Create Points Grid, Random Points, Poisson Disk Sampling
  • Samplers — Surface Sampler, Mesh Surface Sampler, Terrain Sampler, Terrain Surface Sampler, Texture Sampler, Volume Sampler
  • Filters — Density, Steepness, Bounds, Normal, Attribute, Index, Spline, Difference, Union, Intersection
  • Point Operations — Transform, Merge, Copy, Distance, Self Pruning, Lloyd Relaxation, and more
  • Attributes — Create Attribute, Math Operation, Attribute Remap, Attribute Noise, Attribute to Color/Transform
  • Spline — Spline Sampler (OnSpline / OnInterior)
  • Instancers — Prefab Instancer, Weighted Instancer, Prefab Graph Instancer
  • Flow — Branch, Loop, Sub Graph
  • IO — Get Binding, Variables, Graph Input/Output, Data Assets, Reroute

API Reference ​

Other ​

Changelog ​

Procedural Placement Graph for Unity