Add preview shape picker to shader ball; drag controls for node properties

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Preview geometry dropdown: Sphere / Cube / Cylinder (native prims),
Teapot and Hair (bundled resources/preview/*.usdc - teapot tessellated
from the Newell patch data with the Blinn 1.3x height correction, hair
as 220 procedural B-spline strands), and Cloud Volume (UsdVolVolume
over the OpenVDB bunny_cloud sample, downloaded at CMake configure and
gitignored like the HDRIs). Shapes live under one scope with the
material bound on it; switching activates one shape and reframes the
camera. Missing assets drop out of the dropdown. usdVol added to the
USD link set. The camera starts in a Maya-style 3/4 view.

Node property values switch from Input* fields back to draggable
controls (Ctrl+click to type): live-apply while dragging, one undo
command on release.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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This commit is contained in:

indigo

2026-07-06 08:39:16 +08:00

parent 6b8cb2406e

commit 0f30e080e3

8 changed files with 181 additions and 31 deletions

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resources/preview/hair.usdc

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resources/preview/teapot.usdc

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