Learn RHINO-GRASSHOPPER-SCRIPTING with Real Code Examples

Rhino provides precise NURBS-based 3D modeling.

Grasshopper allows node-based, visual programming for parametric models.

Scripting enables custom logic, automation, and integration.

Supports multiple scripting languages (Python, C#, VB.NET) within Rhino/Grasshopper.

Widely used in architecture, jewelry, product design, and digital fabrication.

Geometry creation and manipulation (points, curves, surfaces, solids)

Data trees and parametric control in Grasshopper

Event-driven updates and triggers

Custom components and scripting in Grasshopper

Automation and batch processing via Rhino scripts

Rhino geometry: points, curves, surfaces, solids

Grasshopper components and wires

Data trees: hierarchical data structures

Parameters and sliders for controlling geometry

Scripting nodes to manipulate geometry programmatically

Base Rhino file (.3dm)

Grasshopper definition (.gh)

Scripts folder for Python/C# components

Assets folder for textures, CAD files

Documentation and notes for parametric logic

Model base geometry in Rhino

Create parametric definition in Grasshopper

Use sliders, toggles, and inputs to control design

Add scripting components for custom logic

Bake final geometry into Rhino for output or fabrication

Beginner: simple parametric forms with sliders

Intermediate: basic automation using Python or C# scripts

Advanced: generative design and optimization loops

Expert: plugin development and batch automation

Architect: full-scale parametric building designs

Grasshopper vs Dynamo: GH more flexible for freeform geometry; Dynamo better for Revit integration

RhinoScript vs Python: RhinoScript legacy, Python more modern and versatile

GH scripting vs direct Rhino modeling: scripting allows parametric control and automation

GH vs CatScript: GH professional parametric modeling, CatScript for playful learning

GH vs Processing: GH for CAD/fab, Processing for creative coding and visualization

1998 - Rhino initial release

2007 - Grasshopper introduced as plugin

2010 - GH gains wider adoption in architecture

2015 - Rhino 5/6 supports Python scripting natively

2020 - Rhino 7 introduces SubD and GH updates

2025 - Current parametric and scripting workflows mature

Component - visual node in GH

Data Tree - hierarchical data structure in GH

Bake - convert parametric geometry to Rhino model

Parametric - geometry defined by variables and relationships

Grasshopper Definition (.gh) - saved parametric script