source: GTP/trunk/Lib/Vis/OnlineCullingCHC/include/CullingManager.h @ 2280

Revision 2280, 2.1 KB checked in by mattausch, 18 years ago (diff)

removed dependency on ogre in gtpvisibility

Line 
1#ifndef _CullingManager_H__
2#define _CullingManager_H__
3
4#include <iostream>
5#include <fstream>
6#include "HierarchyInterface.h"
7
8
9
10namespace GtpVisibility {
11
12/** This abstract class implements an interface for a specific culling
13        algorithm. The algorithm is either used to render a scene or to make a visibility query.
14*/
15class CullingManager
16{
17public:
18        /** Default constructor.
19                @remark an appropriate hierarchy interface must be provided for the algorithms to
20                work on specific hierarchy
21        */
22        CullingManager();
23        /** Renders the scene using a specific occlusion culling algorithm, e.g., coherent
24                hierarchical culling or stop and wait.
25        */
26        virtual void RenderScene() = 0;
27        /** Sets the hierarchy interface.
28                @param hierarchyInterface
29                @remark the hierarchy interface encapsulates the hierarchy we are working on
30        */
31        void SetHierarchyInterface(HierarchyInterface *hierarchyInterface);
32        /** Sets the threshold for the visibiliy culling algorithm.
33                @param visibilityThreshold number of visible pixels where an object
34                is still considered invisible.
35        */
36        void SetVisibilityThreshold(unsigned int visibilityThreshold);
37
38        /** Returns number of frustum culled nodes.
39        */
40        unsigned int GetNumFrustumCulledNodes();
41        /** Returns number of occlusion query culled nodes.
42        */
43        unsigned int GetNumQueryCulledNodes();
44        /** Returns number of issued occlusion queries.
45        */
46        unsigned int GetNumQueriesIssued();
47        /** basic initializations on beginning of each frame, e.g.,
48                resets statistics.
49        */
50        void InitFrame(bool visualizeCulledNodes);
51
52        /** Some visualization of culled nodes are shown, depending
53                on the type of hierarchy.
54                @param visualizeCulledNodes if true, culled nodes are visualized
55        */
56        void SetVisualizeCulledNodes(bool visualizeCulledNodes);
57
58
59protected:
60       
61        unsigned int mNumQueryCulledNodes;
62        unsigned int mNumFrustumCulledNodes;
63        unsigned int mVisibilityThreshold;
64        unsigned int mNumQueriesIssued;
65
66        HierarchyInterface *mHierarchyInterface;
67        bool mVisualizeCulledNodes;
68
69};
70
71} // namespace GtpVisibility
72#endif // CullingManager
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