A small Rhino plug-in that adds two commands for creating and editing a clipping box — six depth-less clipping planes (one per box face, normals facing inward) whose half-spaces intersect to exactly the box interior. Only the model inside the box stays visible; everything outside is clipped. Because the clip region is pure geometry (no depth property), the gumball can move, rotate, and scale the whole box and the clipping follows natively.
ClippingBox— draw a box; it creates the six inward-facing clipping planes plus a wireframe outline, grouped together. The face editor opens immediately so you can adjust it.ClippingBoxEdit— push/pull a box face: pick a face handle (the arrow at each face center), then drag along its axis (the opposite face stays put). Repeat; press Enter when done. You can also double-click a clipping box to start editing it.
Rhino 8 (the plug-in targets the Rhino 8 RhinoCommon; it also loads in Rhino 9 via .NET roll-forward).
dotnet build -c Release
Produces bin/Release/ClippingBox.rhp (with its .deps.json and .runtimeconfig.json — keep them
alongside the .rhp).
Drag ClippingBox.rhp onto the Rhino window, or use PlugInManager → Install.
MIT — see LICENSE.