define Subpath struct in gcore and refactor node-graph

Author: indierusty

Cargo.lock

@@ -29,7 +29,6 @@ rustc-hash = { workspace = true }
 dyn-any = { workspace = true }
 ctor = { workspace = true }
 rand_chacha = { workspace = true }
-bezier-rs = { workspace = true }
 specta = { workspace = true }
 image = { workspace = true }
 tinyvec = { workspace = true }

node-graph/gcore/Cargo.toml

@@ -22,6 +22,7 @@ pub mod raster_types;
 pub mod registry;
 pub mod render_complexity;
 pub mod structural;
+pub mod subpath;
 pub mod table;
 pub mod text;
 pub mod transform;

node-graph/gcore/src/lib.rs

@@ -1,16 +1,24 @@
+use kurbo::{Line, PathSeg};
+
 use crate::math::quad::Quad;
 use crate::math::rect::Rect;
-use bezier_rs::Bezier;
+use crate::subpath::Bezier;
+use crate::vector::misc::dvec2_to_point;
 
 pub trait QuadExt {
 	/// Get all the edges in the rect as linear bezier curves
 	fn bezier_lines(&self) -> impl Iterator<Item = Bezier> + '_;
+	fn to_lines(&self) -> impl Iterator<Item = PathSeg>;
 }
 
 impl QuadExt for Quad {
 	fn bezier_lines(&self) -> impl Iterator<Item = Bezier> + '_ {
 		self.all_edges().into_iter().map(|[start, end]| Bezier::from_linear_dvec2(start, end))
 	}
+
+	fn to_lines(&self) -> impl Iterator<Item = PathSeg> {
+		self.all_edges().into_iter().map(|[start, end]| PathSeg::Line(Line::new(dvec2_to_point(start), dvec2_to_point(end))))
+	}
 }
 
 pub trait RectExt {

node-graph/gcore/src/math/math_ext.rs

@@ -0,0 +1,4 @@
+// Implementation constants
+
+/// Constant used to determine if `f64`s are equivalent.
+pub const MAX_ABSOLUTE_DIFFERENCE: f64 = 1e-3;