Module sketch 

2D sketch data model: points, entities (lines, circles, arcs), and constraints, plus closed-profile extraction for the CSG backends.

A sketch lives in its node’s local XZ plane: sketch coordinates (x, y) map to local (x, 0, y), matching how the mesh backends evaluate 2D primitives. Constraint solving lives in the rscad-sketch crate (it needs std + ezpz); this module only stores the data and derives closed profile loops from it.

Structs

Profile

Closed profile loops extracted from a sketch, ready for the CSG backends.

SketchData

A 2D sketch: points, entities, and the constraints between them.

SketchEntity

SketchIntersection

An intersection between two entities, as found by SketchData::nearest_intersection.

SketchPoint

A free point in sketch coordinates.

Enums

SketchConstraint

Geometric constraints between sketch points and entities.

SketchEntityKind

Geometry carried by a sketch entity.

Constants

DEFAULT_ARC_SEGMENTS

Default tessellation density (segments per full circle) used when a consumer has no better setting.

Functions

profile_loops

Extract closed loops from the sketch’s lines and arcs (chained through shared or Coincident endpoints) plus standalone circles.

signed_area

Signed loop area (positive = counter-clockwise = outer boundary after profile_loops normalization).

Type Aliases

SketchId

Stable identifier for sketch points and entities (one shared id space).