signed distance for bidi

Author: Torsten-Mumme

src/main/java/net/itarray/automotion/internal/geometry/ExtendGiving.java

@@ -12,7 +12,7 @@ public interface ExtendGiving<V extends MetricSpace<V>> {
     default V extend(Rectangle rectangle) {
         return transform().apply(rectangle.getCorner().minus(rectangle.getOrigin()));
     }
-    default V signedDistance(V p1, V p2) { return p2.minus(p1); }
+    V signedDistance(V p1, V p2);
 
     Function<Vector, V> transform();
 }

src/main/java/net/itarray/automotion/internal/geometry/VectorExtendGiving.java

@@ -43,4 +43,9 @@ public Vector end(Rectangle rectangle) {
     public Function<Vector, Vector> transform() {
         return v -> new Vector(x.transform().apply(v), y.transform().apply(v));
     }
+
+    @Override
+    public Vector signedDistance(Vector p1, Vector p2) {
+        return new Vector(x.signedDistance(p1.getX(), p2.getX()), y.signedDistance(p1.getY(), p2.getY()));
+    }
 }