dotCooCoo 73c7c7511b 3D and Materials: shadows behind or below the object, with Distance and Bounds ...

Revolve, Extrude & Bevel, Inflate and Rotate take a Shadows switch on the
Lighting tab, with Position (Behind Object or Below Object), Distance from
Object (0 to 100%) and Shadow Bounds (10 to 400%), saved in the effect as
shadow, shadowPosition, shadowDistance and shadowBounds.

With shadows on, the first light casts a hard-edged vector shadow of the
solid: every face of every solid of the object projected along the light
onto a plane behind the object (square to the view) or below it (square to
its own vertical axis and turned with it), filled black with the nonzero
rule at 50% times the opacity of the art that casts it, in that art's
blending mode, and drawn behind the solids. Distance moves the plane away
by a share of the object's largest size; Bounds ends the plane at a square
about the foot of the object's center, four times that size across at
100%. No shadow is drawn while Shading is off, when the first light's
intensity is 0, or when it does not reach the plane. A member's opacity
mask and blending mode apply to the part of the shadow it casts. A shadow
is cast from at most 327,680 faces; past that, commands are refused and a
loaded file draws the source path. The canvas, SVG and PDF exports draw the
shadow, and Expand Appearance keeps it as a path. Values out of range are
refused before the document changes.

Docs: docs/three-d.md, docs/mcp.md, docs/effects-parity.md and the
docs/target-app-parity.md evidence list.

2026-11-11 17:50:33 -08:00

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tests.rs

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