Changeset 146 for trunk/VUT/GtpVisibility/src

Timestamp:

06/22/05 11:04:20 (19 years ago)

Author:

mattausch

Message:

added assumed visibility

Location:

trunk/VUT/GtpVisibility/src

Files:

• CoherentHierarchicalCullingManager.cpp (modified) (2 diffs)
• VisibilityManager.cpp (modified) (2 diffs)

trunk/VUT/GtpVisibility/src/CoherentHierarchicalCullingManager.cpp

@@ -6 +6 @@
 //-----------------------------------------------------------------------
 CoherentHierarchicalCullingManager:: CoherentHierarchicalCullingManager():
-mAssumedVisibility(0)
+mAssumedVisibility(0), mThreshold(0)
 {
         // initialise random generator because of assumed visibility
@@ -111 +111 @@
 }
 //-----------------------------------------------------------------------
-void CoherentHierarchicalCullingManager::SetAssumedVisibility(int assumedVisibility)
+void CoherentHierarchicalCullingManager::SetAssumedVisibility(unsigned int assumedVisibility)
 {
         mAssumedVisibility = assumedVisibility;
+        
+        mThreshold = 0;
+
+        if (mAssumedVisibility)
+        {
+                mThreshold =  RAND_MAX / mAssumedVisibility;
+        }
 }
 //-----------------------------------------------------------------------
 bool CoherentHierarchicalCullingManager::DecideQueryTest(HierarchyNode *node) const
 {
-        bool result = false;
-        rand();
-        return result;
+        return rand() < mThreshold;
 }
 } // namespace GtpVisibility

trunk/VUT/GtpVisibility/src/VisibilityManager.cpp

@@ -46 +46 @@
                 case VisibilityEnvironment::COHERENT_HIERARCHICAL_CULLING:
                         mCullingManager = new CoherentHierarchicalCullingManager();
+                        dynamic_cast<CoherentHierarchicalCullingManager *>(mCullingManager)->
+                                SetAssumedVisibility(mAssumedVisibility);
                         break;
 
@@ -93 +95 @@
         return mQueryManager;
 }
+void VisibilityManager::SetAssumedVisibility(unsigned int assumedVisibility)
+{
+        mAssumedVisibility = assumedVisibility;
+
+        if (VisibilityManager::GetCullingManagerType() == 
+                VisibilityEnvironment::COHERENT_HIERARCHICAL_CULLING)
+        {
+                dynamic_cast<CoherentHierarchicalCullingManager *>(mCullingManager)->
+                                SetAssumedVisibility(mAssumedVisibility);
+        }
+}
 } // namespace GtpVisibility