source: branches/VUT/v2.0/GtpVisibility/include/CoherentHierarchicalCullingManager.h @ 155

Revision 155, 1.5 KB checked in by mattausch, 19 years ago (diff)

added node traversal interface

Line 
1#ifndef _CoherentHierarchicalCullingManager_H__
2#define _CoherentHierarchicalCullingManager_H__
3
4#include "CullingManager.h"
5#include "HierarchyInterface.h"
6
7
8namespace GtpVisibility
9{
10
11/** Renders the scene with the coherent hierarchical culling algorithm.
12*/
13class CoherentHierarchicalCullingManager : public CullingManager
14{
15public:
16        CoherentHierarchicalCullingManager();
17        /** Constructor taking the assumed visibility into account, i.e., the estimation
18                for how many frames the current visibility is considered to be valid
19        */
20        CoherentHierarchicalCullingManager(const unsigned int assumedVisibility);
21
22        void RenderScene();
23        /** Sets assumed visibility (i.e., an estimation for
24                how many frames the visibility is considered to be valid).
25                @param assumedVisibility indicates for how many frames the
26                same visibility is be assumed.
27                if 0, the visibility is tested deterministically for each frame.
28        */
29        void SetAssumedVisibility(unsigned int assumedVisibility);
30
31protected:
32        /** Decides if node is considered to be visible depeding on the
33                assumed visibility factor.
34                @returns if node is considered to be visible
35        */
36        bool DecideVisible(HierarchyNode *node) const;
37
38        unsigned int mAssumedVisibility;
39       
40        /** Skip query for this node.
41        */
42        void SkipQuery(HierarchyNode *node);
43
44
45        /** Threshold for rand function to return positive result with respect to
46                mAssumedVisibility.
47        */
48        int mThreshold;
49};
50
51} // namespace GtpVisibility
52
53#endif // CoherentHierarchicalCullingManager_H
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