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Prepare for expanding geometry::util

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This commit is contained in:
Hanno Braun 2024-10-11 18:20:48 +02:00
parent 380cbb84ce
commit 6ba93fff82
2 changed files with 38 additions and 35 deletions
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36
crates/fj-core/src/geometry/util/mod.rs
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@ -7,38 +7,4 @@
//! module provides an easy place to put new things, before it's clear what to //! module provides an easy place to put new things, before it's clear what to
//! do with them long-term. //! do with them long-term.
use fj_math::{Aabb, Point}; pub mod polyline;
use super::{traits::GenPolyline, CurveBoundary, Tolerance};
/// # Convert a point on a curve from curve coordinates to surface coordinates
pub fn curve_point_to_surface_point(
curve: &dyn GenPolyline<2>,
point_curve: impl Into<Point<1>>,
tolerance: impl Into<Tolerance>,
) -> Point<2> {
let point_curve = point_curve.into();
let tolerance = tolerance.into();
let line_segment = curve.line_segment_at(point_curve, tolerance);
let line = line_segment.to_line();
line.point_from_line_coords(point_curve)
}
/// # Generate a 2D axis-aligned bounding box for a curve in a given range
pub fn surface_aabb_from_bounded_curve(
curve: &dyn GenPolyline<2>,
boundary: impl Into<CurveBoundary<Point<1>>>,
tolerance: impl Into<Tolerance>,
) -> Aabb<2> {
let boundary = boundary.into();
let tolerance = tolerance.into();
let points_curve = curve.generate_polyline(boundary, tolerance);
let points_surface = points_curve.into_iter().map(|point_curve| {
curve_point_to_surface_point(curve, point_curve, tolerance)
});
Aabb::<2>::from_points(points_surface)
}

37
crates/fj-core/src/geometry/util/polyline.rs Normal file
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@ -0,0 +1,37 @@
//! # Geometric utility code based on polylines
use fj_math::{Aabb, Point};
use crate::geometry::{traits::GenPolyline, CurveBoundary, Tolerance};
/// # Convert a point on a curve from curve coordinates to surface coordinates
pub fn curve_point_to_surface_point(
curve: &dyn GenPolyline<2>,
point_curve: impl Into<Point<1>>,
tolerance: impl Into<Tolerance>,
) -> Point<2> {
let point_curve = point_curve.into();
let tolerance = tolerance.into();
let line_segment = curve.line_segment_at(point_curve, tolerance);
let line = line_segment.to_line();
line.point_from_line_coords(point_curve)
}
/// # Generate a 2D axis-aligned bounding box for a curve in a given range
pub fn surface_aabb_from_bounded_curve(
curve: &dyn GenPolyline<2>,
boundary: impl Into<CurveBoundary<Point<1>>>,
tolerance: impl Into<Tolerance>,
) -> Aabb<2> {
let boundary = boundary.into();
let tolerance = tolerance.into();
let points_curve = curve.generate_polyline(boundary, tolerance);
let points_surface = points_curve.into_iter().map(|point_curve| {
curve_point_to_surface_point(curve, point_curve, tolerance)
});
Aabb::<2>::from_points(points_surface)
}