feat(layout): center_of_high_level_node (for topological navmesh generation)

src/layout/layout.rs

@@ -336,6 +336,37 @@ impl<R: AccessRules> Layout<R> {
         }
     }
 
+    /// Checks if a node is "high-level", and if yes, returns its center
+    pub fn center_of_high_level_node(&self, node: NodeIndex) -> Option<Point> {
+        match node {
+            NodeIndex::Primitive(primitive) => {
+                use crate::drawing::{
+                    graph::MakePrimitive,
+                    primitive::{GetWeight, Primitive},
+                };
+                use crate::geometry::{compound::ManageCompounds, GetSetPos};
+                if self
+                    .drawing()
+                    .geometry()
+                    .compounds(GenericIndex::<()>::new(primitive.petgraph_index()))
+                    .next()
+                    .is_some()
+                {
+                    return None;
+                }
+                match primitive.primitive(self.drawing()) {
+                    Primitive::FixedDot(dot) => Some(dot.weight().pos()),
+                    // Primitive::LooseDot(dot) => Some(dot.weight().pos()),
+                    _ => None,
+                }
+            }
+            NodeIndex::Compound(cwidx) => {
+                use crate::geometry::shape::AccessShape;
+                Some(self.node_shape(node).center())
+            }
+        }
+    }
+
     pub fn rules(&self) -> &R {
         self.drawing.rules()
     }