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https://github.com/GraphiteEditor/Graphite.git
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Hannah Li
d8424fc0af
* Refactor bezier lib file into a separate folder * Add better implementation comments * Update import of Subpath from bezier-rs * Add comment to describe compare.rs * Remove printlns and adjust spacing
38 lines
1.7 KiB
Rust
38 lines
1.7 KiB
Rust
/// Comparison functions used for tests in the bezier module
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use super::{Bezier, CircleArc};
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use crate::consts::MAX_ABSOLUTE_DIFFERENCE;
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use crate::utils::f64_compare;
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use glam::DVec2;
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// Compare two f64s with some maximum absolute difference to account for floating point errors
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pub fn compare_f64s(f1: f64, f2: f64) -> bool {
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f64_compare(f1, f2, MAX_ABSOLUTE_DIFFERENCE)
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}
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/// Compare points by allowing some maximum absolute difference to account for floating point errors
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pub fn compare_points(p1: DVec2, p2: DVec2) -> bool {
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p1.abs_diff_eq(p2, MAX_ABSOLUTE_DIFFERENCE)
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}
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/// Compare vectors of points by allowing some maximum absolute difference to account for floating point errors
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pub fn compare_vec_of_points(a: Vec<DVec2>, b: Vec<DVec2>, max_absolute_difference: f64) -> bool {
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a.len() == b.len() && a.into_iter().zip(b.into_iter()).all(|(p1, p2)| p1.abs_diff_eq(p2, max_absolute_difference))
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}
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/// Compare vectors of beziers by allowing some maximum absolute difference between points to account for floating point errors
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pub fn compare_vector_of_beziers(beziers: &[Bezier], expected_bezier_points: Vec<Vec<DVec2>>) -> bool {
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beziers
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.iter()
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.zip(expected_bezier_points.iter())
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.all(|(&a, b)| compare_vec_of_points(a.get_points().collect::<Vec<DVec2>>(), b.to_vec(), MAX_ABSOLUTE_DIFFERENCE))
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}
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/// Compare circle arcs by allowing some maximum absolute difference between values to account for floating point errors
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pub fn compare_arcs(arc1: CircleArc, arc2: CircleArc) -> bool {
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compare_points(arc1.center, arc2.center)
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&& f64_compare(arc1.radius, arc1.radius, MAX_ABSOLUTE_DIFFERENCE)
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&& f64_compare(arc1.start_angle, arc2.start_angle, MAX_ABSOLUTE_DIFFERENCE)
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&& f64_compare(arc1.end_angle, arc2.end_angle, MAX_ABSOLUTE_DIFFERENCE)
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}
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