source: GTP/trunk/Lib/Vis/OnlineCullingCHC/include/CoherentHierarchicalCullingManager2.h @ 2360

Revision 2360, 1.6 KB checked in by mattausch, 17 years ago (diff)
Line 
1#ifndef _CoherentHierarchicalCullingManager2_H__
2#define _CoherentHierarchicalCullingManager2_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 CoherentHierarchicalCullingManager2 : public CullingManager
14{
15public:
16        CoherentHierarchicalCullingManager2();
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        CoherentHierarchicalCullingManager2(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(const 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
39        /** Skip query for this node.
40        */
41        void SkipQuery(HierarchyNode *node) const;
42
43        /** number of steps the visibility is assumed to be valid.
44        */
45        unsigned int mAssumedVisibility;
46
47        /** Threshold for rand function to return positive result with respect to
48                mAssumedVisibility.
49        */
50        int mThreshold;
51};
52
53} // namespace GtpVisibility
54
55#endif // CoherentHierarchicalCullingManager2_H
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