From 3685f1880f7505a26574d02102aafcef11b0686e Mon Sep 17 00:00:00 2001
From: adam <adam@megacz.com>
Date: Wed, 5 Dec 2007 00:24:00 -0800
Subject: [PATCH] checkpoint

darcs-hash:20071205082400-5007d-1a2203c7e591ae0e8b7fa4d2f910ae20e9fab19a.gz
---
 src/edu/berkeley/qfat/Main.java          |    5 ++--
 src/edu/berkeley/qfat/Mesh.java          |   38 ++++++++++++++++++++----------
 src/edu/berkeley/qfat/geom/PointSet.java |    8 +++++++
 3 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/src/edu/berkeley/qfat/Main.java b/src/edu/berkeley/qfat/Main.java
index c4dcf5a..d8896c2 100644
--- a/src/edu/berkeley/qfat/Main.java
+++ b/src/edu/berkeley/qfat/Main.java
@@ -178,13 +178,13 @@ public class Main extends MeshViewer {
     }
 
     public synchronized void breakit() {
-        if (verts > 50) return;
+        if (verts > 300) return;
         PriorityQueue<Mesh.E> es = new PriorityQueue<Mesh.E>();
         for(Mesh.E e : tile.edges()) es.add(e);
         for(int i=0; i<10; i++) {
             Mesh.E e = es.poll();
             verts++;
-            System.out.println("shatter " + e);
+            //System.out.println("shatter " + e);
             e.shatter();
             tile.rebindPoints();
         }
@@ -231,6 +231,7 @@ public class Main extends MeshViewer {
                 repaint();
                 for(Mesh.Vert v : hs) rand(10,v);
             }
+            tile.rebuildPointSet();
             breakit();
             repaint();
             goal.unApplyQuadricToNeighborAll();
diff --git a/src/edu/berkeley/qfat/Mesh.java b/src/edu/berkeley/qfat/Mesh.java
index 74ccd4b..f4f0837 100644
--- a/src/edu/berkeley/qfat/Mesh.java
+++ b/src/edu/berkeley/qfat/Mesh.java
@@ -135,6 +135,7 @@ public class Mesh implements Iterable<Mesh.T> {
         }
     }
 
+    public void rebuildPointSet() { pointset.rebuild(); }
     public Vec diagonal() { return pointset.diagonal(); }
     public Point centroid() { return pointset.centroid(); }
     public Vert nearest(Point p) { return pointset.nearest(p); }
@@ -153,6 +154,7 @@ public class Mesh implements Iterable<Mesh.T> {
         Vert bound_to = this;
         Matrix binding = new Matrix();
         float oldscore = 0;
+        boolean quadricStale = false;
 
         public Matrix errorQuadric() { return quadric; }
         public Point getPoint() { return p; }
@@ -171,6 +173,8 @@ public class Mesh implements Iterable<Mesh.T> {
         }
 
         public void recomputeFundamentalQuadric() {
+            if (!quadricStale && fundamentalQuadric != null) return;
+            quadricStale = false;
             unApplyQuadricToNeighbor();
             Matrix m = Matrix.ZERO;
             E e = this.e;
@@ -198,19 +202,22 @@ public class Mesh implements Iterable<Mesh.T> {
         public void applyQuadricToNeighbor() {
             if (score_against == null) return;
 
+            Vert new_nearest = score_against.nearest(p);
+            if (nearest_in_other_mesh != null && new_nearest == nearest_in_other_mesh) return;
+
             if (nearest_in_other_mesh != null) unApplyQuadricToNeighbor();
-            if (nearest_in_other_mesh == null) {
-                nearest_in_other_mesh = score_against.nearest(p);
-
-                // don't attract to vertices that face the other way
-                if (nearest_in_other_mesh.e == null || nearest_in_other_mesh.norm().dot(norm()) < 0) {
-                    nearest_in_other_mesh = null;
-                } else {
-                    nearest_in_other_mesh.unComputeError();
-                    nearest_in_other_mesh.quadric = nearest_in_other_mesh.quadric.plus(fundamentalQuadric());
-                    nearest_in_other_mesh.quadric_count++;
-                    nearest_in_other_mesh.computeError();
-                }
+            if (nearest_in_other_mesh != null) throw new Error();
+
+            nearest_in_other_mesh = new_nearest;
+                
+            // don't attract to vertices that face the other way
+            if (nearest_in_other_mesh.e == null || nearest_in_other_mesh.norm().dot(norm()) < 0) {
+                nearest_in_other_mesh = null;
+            } else {
+                nearest_in_other_mesh.unComputeError();
+                nearest_in_other_mesh.quadric = nearest_in_other_mesh.quadric.plus(fundamentalQuadric());
+                nearest_in_other_mesh.quadric_count++;
+                nearest_in_other_mesh.computeError();
             }
             reComputeError();
         }
@@ -245,6 +252,13 @@ public class Mesh implements Iterable<Mesh.T> {
             applyQuadricToNeighbor();
 
             // should recompute fundamental quadrics of all vertices sharing a face, but we defer...
+            E e = this.e;
+            do {
+                e.p2.quadricStale = true;
+                e = e.pair.next;
+            } while(e != this.e);
+
+
             // FIXME: intersection test needed?
             return true;
         }
diff --git a/src/edu/berkeley/qfat/geom/PointSet.java b/src/edu/berkeley/qfat/geom/PointSet.java
index 8c6642c..0934336 100644
--- a/src/edu/berkeley/qfat/geom/PointSet.java
+++ b/src/edu/berkeley/qfat/geom/PointSet.java
@@ -14,12 +14,20 @@ public class PointSet<V extends HasPoint> implements Iterable<V> {
     }
     public void clear() {
         kd = new KDTree(3);
+        exact = new HashMap<Point,V>();
     }
 
     public V get(Point p) {
         return exact.get(p);
     }
 
+    public void rebuild() {
+        HashMap<Point,V> old_exact = exact;
+        exact = new HashMap<Point,V>();
+        kd = new KDTree(3);
+        for(V v : old_exact.values()) add(v);
+    }
+
     public void add(V v) {
         V x = get(v.getPoint());
         if (x != null && x.equals(v)) return;
-- 
1.7.10.4