Prepare to support curved surfaces

experiments/2024-12-09/src/geometry/mod.rs

@@ -1,9 +1,11 @@
 mod sketch;
+mod surface;
 mod tri_mesh;
 mod triangle;
 
 pub use self::{
     sketch::Sketch,
+    surface::SurfaceGeometry,
     tri_mesh::{MeshTriangle, TriMesh},
     triangle::Triangle,
 };

experiments/2024-12-09/src/geometry/surface.rs

@@ -0,0 +1,26 @@
+use crate::math::{Plane, Point, Vector};
+
+pub trait SurfaceGeometry {
+    fn point_from_local(&self, point: Point<2>) -> Point<3>;
+    fn project_point(&self, point: Point<3>) -> Point<2>;
+    fn flip(&self) -> Box<dyn SurfaceGeometry>;
+    fn translate(&self, offset: Vector<3>) -> Box<dyn SurfaceGeometry>;
+}
+
+impl SurfaceGeometry for Plane {
+    fn point_from_local(&self, point: Point<2>) -> Point<3> {
+        self.point_from_local(point)
+    }
+
+    fn project_point(&self, point: Point<3>) -> Point<2> {
+        self.project_point(point)
+    }
+
+    fn flip(&self) -> Box<dyn SurfaceGeometry> {
+        Box::new((*self).flip())
+    }
+
+    fn translate(&self, offset: Vector<3>) -> Box<dyn SurfaceGeometry> {
+        Box::new((*self).translate(offset))
+    }
+}

experiments/2024-12-09/src/model.rs

@@ -27,13 +27,13 @@ pub fn model() -> HandleAny {
         ]);
 
         let surface = Handle::new(Surface {
-            geometry: Plane {
+            geometry: Box::new(Plane {
                 origin: Point::from([0., 0., 1.]),
                 coords: Bivector {
                     a: Vector::from([1., 0., 0.]),
                     b: Vector::from([0., 1., 0.]),
                 },
-            },
+            }),
         });
 
         let face = sketch.to_face(surface);

experiments/2024-12-09/src/operations/connect.rs

@@ -53,9 +53,9 @@ impl ConnectExt for Handle<Face> {
                 };
 
                 let surface = Handle::new(Surface {
-                    geometry: Plane::from_points(
+                    geometry: Box::new(Plane::from_points(
                         [&q.start, r, s].map(|vertex| vertex.point),
-                    ),
+                    )),
                 });
                 let face = Face::new(
                     surface,

experiments/2024-12-09/src/topology/surface.rs

@@ -1,15 +1,15 @@
 use std::fmt;
 
-use crate::math::Plane;
+use crate::geometry::SurfaceGeometry;
 
 pub struct Surface {
-    pub geometry: Plane,
+    pub geometry: Box<dyn SurfaceGeometry>,
 }
 
 impl fmt::Debug for Surface {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("Surface")
-            .field("geometry", &self.geometry)
+            .field("geometry", &"Box<dyn SurfaceGeometry>")
             .finish()
     }
 }