Plant primitives
ELLIPSOIDHEAD2
Creates Autodesk's 2:1 ellipsoidal head. R is the only native input; the head height is derived as 0.5 × R.
- Where to find it
- Home > Primitives > Plant primitives > ELLIPSOIDHEAD2
- When to use it
- 2:1 ellipsoidal heads with Plant-derived height
On this page
Step by step
- Pick the base/insertion point.
- Set radius R.
- Finish placement; H is derived by the native primitive.
- Confirm orientation and attachment snaps.
Parameters
Autodesk Annex B defines ELLIPSOIDHEAD2(s, R). H is a derived/read-only primitive result, not a placement or export input.
Export
Plant export emits the native R-only ELLIPSOIDHEAD2 call.
Keep in mind
- Parameter Graph and Inspector expose R only. Old saved SF data is ignored for this primitive.
Documentation reviewed