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Hanno Braun 2024-06-24 22:23:30 +02:00
parent 978d4c00f1
commit e7edc33bcb
1 changed files with 50 additions and 39 deletions
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89
crates/fj-core/src/algorithms/approx/half_edge.rs
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@ -27,48 +27,59 @@ impl Approx for (&Handle<HalfEdge>, &Handle<Surface>) {
geometry: &Geometry,
) -> Self::Approximation {
let (half_edge, surface) = self;
let tolerance = tolerance.into();
let boundary = geometry.of_half_edge(half_edge).boundary;
let [start_position_curve, _] = boundary.inner;
let start = approx_vertex(
half_edge.start_vertex().clone(),
half_edge.curve(),
surface,
start_position_curve,
&mut cache.start_position,
geometry,
);
let rest = approx_curve_with_cache(
half_edge.curve(),
surface,
boundary,
tolerance,
&mut cache.curve,
geometry,
);
let points = iter::once(start)
.chain(rest.points)
.map(|point| {
let point_surface = geometry
.of_curve(half_edge.curve())
.unwrap()
.local_on(surface)
.unwrap()
.path
.point_from_path_coords(point.local_form);
ApproxPoint::new(point_surface, point.global_form)
})
.collect();
HalfEdgeApprox { points }
approx_half_edge(half_edge, surface, tolerance, cache, geometry)
}
}
/// Approximate the provided half-edge
pub fn approx_half_edge(
half_edge: &Handle<HalfEdge>,
surface: &Handle<Surface>,
tolerance: impl Into<Tolerance>,
cache: &mut HalfEdgeApproxCache,
geometry: &Geometry,
) -> HalfEdgeApprox {
let tolerance = tolerance.into();
let boundary = geometry.of_half_edge(half_edge).boundary;
let [start_position_curve, _] = boundary.inner;
let start = approx_vertex(
half_edge.start_vertex().clone(),
half_edge.curve(),
surface,
start_position_curve,
&mut cache.start_position,
geometry,
);
let rest = approx_curve_with_cache(
half_edge.curve(),
surface,
boundary,
tolerance,
&mut cache.curve,
geometry,
);
let points = iter::once(start)
.chain(rest.points)
.map(|point| {
let point_surface = geometry
.of_curve(half_edge.curve())
.unwrap()
.local_on(surface)
.unwrap()
.path
.point_from_path_coords(point.local_form);
ApproxPoint::new(point_surface, point.global_form)
})
.collect();
HalfEdgeApprox { points }
}
/// An approximation of a [`HalfEdge`]
///
/// The approximation of a half-edge is its first vertex, combined with the