Arc
Circular arc with direct radius, start, end, and segment controls.
Radius
Angles
Open example
OpenGeometry Three
Core examples
Primitives
6 core demos
Curve
Control-point curve example with direct edits to the inner control points.
Control Points
Curve
Open example
Elliptical Arc
Elliptical arc with independent X and Z radius, start, end, and segment controls.
Radius X
Radius Z
Angles
Open example
Line
Two-point line primitive with direct start and end point controls.
Start
End
Open example
Polyline
Ordered point-list polyline example with direct edits to the inner points.
Points
Path
Open example
Rectangle
Parametric rectangular primitive for base profiles.
Width
Breadth
Open example
Shapes
9 core demos
Cuboid
Rectangular solid for massing, rooms, and equipment blocks.
Width
Depth
Open example
Cuboid Placement
Focused placement example for translation, rotation, and scale on one cuboid.
Translation
Rotation
Scale
Open example
Cylinder
Cylindrical volume for ducts, pipes, and shafts.
Radius
Segments
Open example
Opening
Opening helper volume for void and penetration previews.
Width
Height
Open example
Polygon
Polygon face example with direct profile changes and an optional hole.
Vertices
Holes
Open example
Sphere
UV sphere for equipment envelopes and clearance studies.
Radius
Segments
Open example
Sweep
Sweep solid built from a visible path and a simple profile.
Path
Profile
Open example
Window Frame Sweep
Closed-loop sweep regression verifier with expected-vs-observed frame dimensions.
Regression
Window Frame
Open example
Wedge
Tapered solid for ramps and sloped technical elements.
Height
Depth
Open example
Operations
9 core demos
Boolean Operations
Solid union, intersection, and subtraction with inputs on the left and the result on the right.
Solid
Select
Open example
Polygon Boolean Operations
Coplanar polygon union, intersection, and subtraction on one page.
Polygon
Select
Open example
Extruded Boolean Operations
Uses polygon.extrude(height) to build solids before booleaning them.
Extrude
BRep Solid
Open example
Parametric and Freeform
Start parametric, convert to freeform, then push-pull one face on the copy.
Parametric
Freeform
Open example
Offset
Offset generation with acute-corner and bevel parameters.
Polyline
Offset
Open example
Variable Ring Offset
Per-edge ring inset (setback envelope) with live front/side/rear distances and a splitting dumbbell parcel.
Ring
Offset
Setback
Open example
General Extrude
Directional extrude with arbitrary direction and extent type.
Extrude
BRep
Open example
Analytic STEP Export
Cylinder exported as one exact CYLINDRICAL_SURFACE + circle edges, not a facet fan (D1+D9).
Analytic
STEP
Open example
Units & STEP
Export the same model tagged mm / cm / m / inch; inspect the emitted unit context (D8).
Units
STEP
Open example
Profile Validation
Winding correction, self-intersection, duplicate & degeneracy diagnostics (D7).
Profile
Robustness
Open example
B-rep Validity & Healing
Geometric validity report (closed shell, manifold, orientation) + vertex-weld healing (D5).
Validity
Healing
Open example
Work Plane Sketch
A 2D sketch lifted to 3D purely by a datum frame (origin + normal + axes) (D6).
Work Plane
Sketch
Open example
STEP Export
Single-shape STEP export workflow with direct download.
STEP
Export
Open example
STL Export
Single-shape binary STL export workflow with direct download.
STL
Export
Open example
Sweep Path + Profile
Sweep example that keeps both the path and profile easy to follow.
Path
Profile
Open example
Wall from Offsets
Build a wall solid from one centerline and its two offsets.
Wall
Offsets
Open example
Analysis
1 demo
LeBlanc Stand-Off Frame
Structural analysis of the LeBlanc 36" Stand-Off Frame under wind load.
Analysis
Deflection
Open example