Struct ProfileProcessor 

pub struct ProfileProcessor { /* private fields */ }

Profile processor - processes IFC profiles into 2D contours

Implementations

impl ProfileProcessor

pub fn get_line_points_3d( &self, line: &DecodedEntity, decoder: &mut EntityDecoder<'_>, t_start: f64, t_end: f64, ) -> Result<Vec<Point3<f64>>>

Sample a bare (untrimmed) IfcLine as the two-point segment spanning the parameter range [t_start, t_end]. Public so the swept-disk processor can apply a solid’s StartParam/EndParam to a raw line directrix.

pub fn get_polyline_points_trimmed( &self, curve: &DecodedEntity, decoder: &mut EntityDecoder<'_>, start_param: Option<f64>, end_param: Option<f64>, ) -> Result<Vec<Point3<f64>>>

Sample an IfcPolyline directrix and trim by parameter range. IFC parameterises a polyline as [0, N-1] where N is the number of points and each segment between consecutive points contributes 1.0 to the parameter. StartParam / EndParam are converted to a fraction of the polyline and trim_polyline does the actual cutting (linear interpolation between sampled vertices, which is exact for piecewise-linear input).

impl ProfileProcessor

pub fn new(schema: IfcSchema) -> Self

Create new profile processor

pub fn set_tessellation_quality(&self, quality: TessellationQuality)

Set the tessellation detail for subsequent curve sampling.

process and get_curve_points set this themselves; call it explicitly before the lower-level samplers (get_composite_curve_points_trimmed, get_polyline_points_trimmed) that don’t take a quality argument.

pub fn process( &self, profile: &DecodedEntity, decoder: &mut EntityDecoder<'_>, quality: TessellationQuality, ) -> Result<Profile2D>

Process any IFC profile definition at the given tessellation quality.

Profile-plane tessellation (the 2D outline that becomes an extruded cap or an opening cutter) never gets finer above Medium — denser opening circles only multiply the earcut cap-bridge slivers that show up as scar lines on plates with bolt holes (issue #976). Below Medium they do get coarser: circular profiles via TessellationQuality::circle_profile_segments, and profile arcs/fillets (rounded rectangles, steel-section root fillets, trimmed conics, indexed-polycurve arcs) via TessellationQuality::profile_arc_segments. The quality knob drives the curved 3D surfaces instead — swept paths (via get_curve_points), cylinders, surfaces of revolution, NURBS, and brep edges — where faceting is actually visible.

pub fn get_curve_points( &self, curve: &DecodedEntity, decoder: &mut EntityDecoder<'_>, quality: TessellationQuality, ) -> Result<Vec<Point3<f64>>>

Get 3D points from a curve (for swept disk solid, etc.) at the given tessellation quality.

pub fn get_composite_curve_points_trimmed( &self, curve: &DecodedEntity, decoder: &mut EntityDecoder<'_>, start_param: Option<f64>, end_param: Option<f64>, ) -> Result<Vec<Point3<f64>>>

Process composite curve into 3D points, honoring IfcSweptDiskSolid’s StartParam/EndParam. Per IFC, a composite curve is parameterised so segment i covers [i, i+1]. Segments fully outside [start, end] are dropped; boundary segments are truncated by linearly interpolating along their sampled point list (a per-segment normalised parameter).

Non-conformant out-of-range EndParam values (notably Revit, which emits a cumulative-per-segment parameter that can exceed num_segments) are clamped to the upper bound of the spec domain — this matches the authoring tool’s effective intent (render the whole curve) without guessing at a length-unit interpretation that proved wrong on real files (see #631 follow-up notes).