Changeset 3069 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/Bvh.cpp

Timestamp:

10/24/08 17:04:15 (16 years ago)

Author:

mattausch

Message:

completely changing dynamic stuff

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/Bvh.cpp (modified) (1 diff)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/Bvh.cpp

@@ -1269 +1269 @@
 void Bvh::UpdateDynamicBranch()
 {
+        // the bvh has two main branches
+        // a static branch (the old root), and adynamic branch 
+        // we create a 'dynamic' leaf which basically is a container
+        // for all dynamic objects underneath
+
+        // the bounding boxes of the dynamic tree must be updated
+        // once each frame in order to be able to incorporate
+        // the movements of the objects within
+
         // delete old branch
-        if (!mDynamicRoot->IsLeaf())
-        {
-                cout << "deleting old branch" << endl;
-
-                DEL_PTR(mDynamicRoot);
-
-                mDynamicRoot = new BvhLeaf(mRoot);
-                mDynamicRoot->mBox = mRoot->mBox;
-
-                mDynamicRoot->mFirst = 0;
-                mDynamicRoot->mLast = 0;
-                mDynamicRoot->mArea = mDynamicRoot->mBox.SurfaceArea();
-        }
-
+        cout << "deleting old branch" << endl;
+
+        DEL_PTR(mDynamicRoot);
+
+        mDynamicRoot = new BvhLeaf(mRoot);
+        mDynamicRoot->mBox = mRoot->mBox;
+
+        mDynamicRoot->mFirst = 0;
+        mDynamicRoot->mLast = (int)mDynamicEntities.size() - 1;
+        mDynamicRoot->mArea = mDynamicRoot->mBox.SurfaceArea();
+        
         cout << "updating dynamic branch" << endl;