Prepare to lift fmt::Display requirement

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

@@ -3,6 +3,7 @@ use std::{fmt, ops::Deref, rc::Rc};
 use super::tri_mesh::TriMesh;
 
 pub trait Operation: fmt::Display {
+    fn label(&self) -> &'static str;
     fn tri_mesh(&self) -> TriMesh;
     fn children(&self) -> Vec<AnyOp>;
 }
@@ -68,6 +69,10 @@ impl fmt::Display for AnyOp {
 }
 
 impl Operation for AnyOp {
+    fn label(&self) -> &'static str {
+        self.inner.label()
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         self.inner.tri_mesh()
     }

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

@@ -31,6 +31,10 @@ impl fmt::Display for Shape {
 }
 
 impl Operation for Shape {
+    fn label(&self) -> &'static str {
+        "Shape"
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         if let Some(op) = self.sequence.last() {
             op.tri_mesh()
@@ -54,6 +58,10 @@ struct OperationInSequence {
 }
 
 impl Operation for OperationInSequence {
+    fn label(&self) -> &'static str {
+        self.operation.label()
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         let mesh = if let Some(op) = &self.previous {
             op.tri_mesh()

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

@@ -27,6 +27,10 @@ impl fmt::Display for Triangle {
 }
 
 impl Operation for Triangle {
+    fn label(&self) -> &'static str {
+        "Triangle"
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         TriMesh {
             triangles: vec![self.clone()],

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

@@ -47,6 +47,10 @@ impl fmt::Display for Face {
 }
 
 impl Operation for Face {
+    fn label(&self) -> &'static str {
+        "Face"
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         // This is a placeholder implementation that only supports convex faces.
 

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

@@ -29,6 +29,10 @@ impl fmt::Display for Vertex {
 }
 
 impl Operation for Vertex {
+    fn label(&self) -> &'static str {
+        "Vertex"
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         TriMesh::new()
     }

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

@@ -128,6 +128,10 @@ impl fmt::Display for OperationView {
 }
 
 impl Operation for OperationView {
+    fn label(&self) -> &'static str {
+        self.operation.label()
+    }
+
     fn tri_mesh(&self) -> TriMesh {
         self.operation.tri_mesh()
     }