Orrery Terrain · OrreryTerrainEditor module · struct

FOrreryTerrainStampWire

Editor only

One build of a stamp's wire ghost (built on a worker thread): EvaluateStampPreview's 65 × 65 grid of the stamp's result over the ground sampled at StampPreviewPoint, which cuts, and the lines the tool draws.

Declaration

struct FOrreryTerrainStampWire

Header: #include "Tools/OrreryTerrainStampPreviewMesh.h"
Module: PublicDependencyModuleNames.Add("OrreryTerrainEditor"); in an editor module’s Build.cs: an editor module, not in packaged games.
Stability: Stable: changes within a major version only add.
Thread: Any thread once published.

Description

Lines and CutLines are segment pairs in world cm, lifted 30 cm off the result, between neighbouring points the stamp writes. A segment whose ends both lie on or above the ground goes to Lines, drawn depth-tested; one whose ends both lie below it (MarkStampPreviewCuts) goes to CutLines, drawn through the ground; a segment that crosses the ground is split where its change from the ground passes zero. CutDepths gives each cut segment its depth, so a shallow cut draws faint and a deep one strong, as the shaded mesh's cut does. Immutable once built.

Note.

Any thread once published. Tier 3.

Properties

Name	Type	Default	Meaning
`Ghost`	`FOrreryTerrainStampGhost`	—	The grid: Side, Points_cm (Z the result), Inside, bLoaded; BuildMs is the worker's.
`Ground_mm`	`TArray<int32>`	—	The sampled ground per point (the stamp's base where there is none).
`Result_mm`	`TArray<int32>`	—	The stamp's result per point, the kernel's millimetres.
`Cut`	`TArray<uint8>`	—	1 where the point is inside and its result lies below the ground.
`CutCount`	`int32`	`0`	Points marked in Cut.
`Lines`	`TArray<FVector>`	—	Segment pairs on or above the ground, world cm.
`CutLines`	`TArray<FVector>`	—	Segment pairs below the ground, world cm.
`CutDepths`	`TArray<float>`	—	One per CutLines pair: the mean depth of its ends under the ground, 0 to 1 over the first 30 cm.