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grasshopper-generator
Generate Rhino 7 Grasshopper (.ghx) files programmatically.
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// RATINGS
Not yet listed on ClawHub or SkillsMP
// README
Grasshopper Generator
An OpenClaw skill that generates Rhino 7 Grasshopper (.ghx) files from natural language descriptions or images.
What It Does
- Generates valid
.ghx(XML) files compatible with Rhino 7 Grasshopper - Supports 152 authentic native Grasshopper components with real GUIDs
- GhPython Script components for custom geometry logic
- Automatic wiring between components
- Built-in validation to ensure generated files are structurally correct
Quick Start
As an OpenClaw Skill
Install the .skill file and use it via your agent:
> Generate a parametric twisted tower Grasshopper definition
Standalone Python Library
from ghx_generator import GHXGenerator
gen = GHXGenerator("My Definition", "Description")
# Add a slider
radius = gen.add_slider("Radius", 20, 1, 100, x=50, y=50)
# Add a native component
circle = gen.add_component("Circle", inputs=["Base Plane", "Radius"],
outputs=["Circle"], x=300, y=50)
# Wire them
gen.connect(radius, "output", circle, "Radius")
# Save
gen.save("output.ghx")
CLI
# Generate demo file
python scripts/ghx_generator.py
# Custom output
python scripts/ghx_generator.py -o my_definition.ghx
# List all known components
python scripts/ghx_generator.py --list
# Validate a .ghx file
python scripts/ghx_generator.py --validate myfile.ghx
Components Database
152 authentic component GUIDs extracted from real Grasshopper installations, organized by category:
| Category | Examples |
|---|---|
| Params | Number Slider, Panel, Point, Curve |
| Math | Addition, Multiplication, Division |
| Vector | Unit X/Y/Z, Construct Point, Planes |
| Curve | Line, Circle, Rectangle, Divide Curve, Voronoi |
| Surface | Loft, Extrude, Boundary Surfaces, Sweep1 |
| Transform | Move, Rotate, Scale, Mirror, Orient |
| Intersect | Solid Union, Solid Difference |
| Mesh | Mesh Brep, Mesh Join |
| Script | GhPython Script |
For components not in the database, use GhPython Script — it has full Rhino.Geometry API access.
File Structure
grasshopper-generator/
├── SKILL.md # Skill definition and workflow
├── scripts/
│ └── ghx_generator.py # Core generator with CLI
└── references/
├── component_guids.json # 152 authentic component GUIDs
└── template_voronoi.ghx # Reference template from real GH file
GhPython Example
py = gen.add_python("Twisted Tower", """
import Rhino.Geometry as rg
import math
pts = []
for i in range(floors):
t = i / max(floors - 1, 1)
angle = math.radians(twist * t)
x = radius * math.cos(angle)
y = radius * math.sin(angle)
z = height * t
pts.append(rg.Point3d(x, y, z))
a = rg.NurbsCurve.CreateInterpolated(pts, 3)
""", inputs=["radius", "height", "twist", "floors"],
outputs=["a"], x=300, y=200)
License
MIT
// HOW IT'S BUILT
KEY FILES