Module mesh_hidden_lines 

Hidden-line drawings (orthographic and perspective) and visible face regions (orthographic) of triangle meshes.

The contracts and their types (ADR 0090, ADR 0094). The exact scalar providers arrive with the hidden-lines-provider feature, or a caller supplies its own. The contract is part of discrete; application adds the providers and Application::hidden_lines (ADR 0105).

Modules

conformance

Shared conformance checks for portable hidden-line providers.

Structs

EdgeSelection

Which edges to draw.

FaceGroup

Caller-chosen id of a set of triangles that share one surface pattern.

HiddenLineError

A refused hidden-line request: the GeomError and, when one input mesh is at fault, which.

HiddenLineEvidence

Auditable counts for one hidden-line operation.

HiddenLineLimits

Hard bounds for one hidden-line request.

HiddenLineMesh

One input mesh with its identity and role.

HiddenLineOutcome

Image-space segments plus evidence.

HiddenLineRequest

One hidden-line request.

HiddenLineSegment

A maximal positive-length piece of one source edge with one visibility.

MeshId

Caller-chosen identity of one input mesh, echoed in every segment and refusal that concerns it. Ids must be unique within a request.

RefusedMesh

One input mesh that the per-mesh audit refuses, with the reason.

ScalarHiddenLines

Reference provider: visibility decided exactly in the view’s frame. Portable exact hidden-line provider for orthographic and perspective views.

ScalarVisibleFaces

Reference provider: visible face regions decided exactly in the view’s frame. Portable exact orthographic visible-face provider.

SourceEdge

A source mesh edge.

View

A view: orthographic by default, or perspective (see ViewProjection).

VisibleFaceEvidence

Auditable counts for one visible-face operation.

VisibleFaceLimits

Hard bounds for one visible-face request.

VisibleFaceOutcome

Visible regions plus evidence.

VisibleFaceRequest

One visible-face request.

VisibleRegion

A maximal region of the image where one source is frontmost.

Enums

EdgeKind

Why an edge is drawn.

FaceGroups

The face groups of one mesh.

FaceSource

What a visible region is a region of.

HiddenLineSource

Provenance of a hidden-line drawing.

MeshRole

How an input mesh occludes and whether it is capped by a near plane.

ViewProjection

How a view maps model points to the image.

Visibility

Whether a piece of an edge can be seen.

Constants

CAPABILITY_ID

FACES_CAPABILITY_ID

Capability proven by implementing MeshVisibleFaces (ADR 0094).

Traits

MeshHiddenLines

Provider for deterministic hidden-line drawings of triangle meshes.

MeshVisibleFaces

Provider for deterministic visible-face regions of triangle meshes.

Type Aliases

OrthographicViewDeprecated

The former name of View, from when every view was orthographic (ADR 0107).