Improve adding things to quadtree (still broken, though)
authorDavid Gow <david@ingeniumdigital.com>
Sat, 4 Oct 2014 13:08:59 +0000 (21:08 +0800)
committerDavid Gow <david@ingeniumdigital.com>
Sat, 4 Oct 2014 13:08:59 +0000 (21:08 +0800)
src/document.cpp

index c41c848..7dda475 100644 (file)
@@ -173,11 +173,14 @@ QuadTreeIndex Document::GenQuadChild(QuadTreeIndex parent, QuadTreeNodeChildren
        m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, parent, type, 0, 0, -1});
 
        m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
-       for (unsigned i = m_quadtree.nodes[parent].object_begin; i < m_quadtree.nodes[parent].object_end; ++i)
+       for (QuadTreeIndex overlay = parent; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
        {
-               if (IntersectsQuadChild(m_objects.bounds[i], type))
+               for (unsigned i = m_quadtree.nodes[overlay].object_begin; i < m_quadtree.nodes[overlay].object_end; ++i)
                {
-                       m_count += ClipObjectToQuadChild(i, type);
+                       if (IntersectsQuadChild(m_objects.bounds[i], type))
+                       {
+                               m_count += ClipObjectToQuadChild(i, type);
+                       }
                }
        }
        m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
@@ -208,12 +211,15 @@ QuadTreeIndex Document::GenQuadParent(QuadTreeIndex child, QuadTreeNodeChildren
        m_quadtree.nodes.push_back(QuadTreeNode{QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, QUADTREE_EMPTY, -1, QTC_UNKNOWN, 0, 0, -1});
 
        m_quadtree.nodes[new_index].object_begin = m_objects.bounds.size();
-       for (unsigned i = m_quadtree.nodes[child].object_begin; i < m_quadtree.nodes[child].object_end; ++i)
+       for (QuadTreeIndex overlay = child; overlay != -1; overlay = m_quadtree.nodes[overlay].next_overlay)
        {
-               m_objects.bounds.push_back(TransformFromQuadChild(m_objects.bounds[i], type));
-               m_objects.types.push_back(m_objects.types[i]);
-               m_objects.data_indices.push_back(m_objects.data_indices[i]);
-               m_count++;
+               for (unsigned i = m_quadtree.nodes[overlay].object_begin; i < m_quadtree.nodes[overlay].object_end; ++i)
+               {
+                       m_objects.bounds.push_back(TransformFromQuadChild(m_objects.bounds[i], type));
+                       m_objects.types.push_back(m_objects.types[i]);
+                       m_objects.data_indices.push_back(m_objects.data_indices[i]);
+                       m_count++;
+               }
        }
        m_quadtree.nodes[new_index].object_end = m_objects.bounds.size();
        switch (type)
@@ -334,20 +340,23 @@ unsigned Document::Add(ObjectType type, const Rect & bounds, unsigned data_index
 #ifndef QUADTREE_DISABLED
        if (qti != -1)
        {
-               if (m_count == m_quadtree.nodes[qti].object_end+1)
+               while (m_quadtree.nodes[qti].next_overlay != -1)
                {
-                       m_quadtree.nodes[qti].object_end++;
-               }
-               else
-               {
-                       QuadTreeIndex overlay = m_quadtree.nodes.size();
-                       m_quadtree.nodes.push_back(m_quadtree.nodes[qti]);
-                       m_quadtree.nodes[overlay].object_begin = m_count;
-                       m_quadtree.nodes[overlay].object_end = m_count+1;
-                       m_quadtree.nodes[qti].next_overlay = overlay;
+                       if (m_count == m_quadtree.nodes[qti].object_end+1)
+                       {
+                               m_quadtree.nodes[qti].object_end++;
+                               goto done;
+                       }
+                       qti = m_quadtree.nodes[qti].next_overlay;
                }
+               QuadTreeIndex overlay = m_quadtree.nodes.size();
+               m_quadtree.nodes.push_back(m_quadtree.nodes[qti]);
+               m_quadtree.nodes[overlay].object_begin = m_count;
+               m_quadtree.nodes[overlay].object_end = m_count+1;
+               m_quadtree.nodes[qti].next_overlay = overlay;
        }
 #endif
+done:
        return (m_count++); // Why can't we just use the size of types or something?
 }
 

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