reachable

main/CompGeo.pde

@@ -67,4 +67,7 @@ public static class CompGeo {
     }
     return sum;
   }
+
+
+
 }

main/HalfEdge.pde

@@ -253,6 +253,21 @@ public class HalfEdge {
     System.out.println();
   }
 
+  private boolean isReachable(HalfEdge h) {
+    if (this == h) { return true; }
+    if (counted == false) {
+      counted = true;
+      return (twin.isReachable(h) || next.isReachable(h) || previous.isReachable(h));
+    }
+    return false;
+  }
+
+  public boolean canReach(HalfEdge h) {
+    boolean out = isReachable(h);
+    reset();
+    return out;
+  }
+
 
   // may not want getters, but for now they are here.
   public void setprevious(HalfEdge p) {

main/Point.pde

@@ -52,4 +52,6 @@ public class Point {
     return ref.countReset();
   }
 
+
+
 }

main/PointList.pde

@@ -23,4 +23,21 @@ public class PointList {
   public boolean removePoint(Point p) {
     return points.remove(p); 
   } 
+
+  public ArrayList<HalfEdge> getAllStructures() {
+    int num = points.size();
+    ArrayList<HalfEdge> struct = new ArrayList<HalfEdge>();
+    for (int i = 0; i < num; i++) {
+      if (points.get(i).getRef().getCounted() == false) {
+        points.get(i).getRef().count();
+        struct.add(points.get(i).getRef());
+      }
+    }
+    num = struct.size();
+    for (int i = 0; i < num; i++) {
+      struct.get(i).reset(); 
+    }
+    return struct;
+  }
+
 }

main/main.pde

@@ -24,7 +24,7 @@ public void setup() {
   HalfEdge h2 = new HalfEdge(p1, p4);
   HalfEdge h3 = new HalfEdge(p3, p1);
   HalfEdge h4 = new HalfEdge(p1, p5);
-  HalfEdge h5 = new HalfEdge(p3, p4);
+  //HalfEdge h5 = new HalfEdge(p3, p4);
   float f = CompGeo.signedArea(h2.gettwin());
   float f2 = CompGeo.signedArea(h2);
   System.out.println("Signed Area: " + f);