source: obsolete/trunk/VUT/Ogre/include/OgreItemBufferQueryManager.h @ 159

Revision 159, 1.7 KB checked in by mattausch, 19 years ago (diff)

added flags for switching on/off transparents for item buffer and vertex programs for depth pass / item buffer

Line 
1#ifndef _ItemBufferQueryManager_H__
2#define _ItemBufferQueryManager_H__
3
4#include "OgrePlatformQueryManager.h"
5
6namespace Ogre {
7 
8/**
9        Class which implements the QueryManager for Ogre scene queries using an item buffer,
10        i.e., the objects are rendered with their id used as unique color code. After reading
11        back the frame buffer, the visibility information can be established for each object.
12*/
13class __declspec(dllexport) ItemBufferQueryManager: public PlatformQueryManager
14{
15public:
16    /** Constructor taking a hierarchy interface as an argument. This allows to operate
17                on different hierarchy types, while reusing the implementation of the query methods.
18                @param renderPatches determines if the visibility of either patches or meshes is computed.
19    */
20        ItemBufferQueryManager(PlatformHierarchyInterface *hierarchyInterface, Viewport *vp,
21                                                   const bool renderPatches);
22   
23    void ComputeCameraVisibility(const Camera &camera,
24                            InfoContainer<GtpVisibility::NodeInfo> *visibleNodes,
25                            InfoContainer<GtpVisibility::MeshInfo> *visibleGeometry,
26                                InfoContainer<GtpVisibility::PatchInfo> *visiblePatches,
27                            bool relativeVisibility = false);
28   
29        bool ShootRay(const Ray &ray, std::vector<Mesh *> *visibleMeshes, bool isGlobalLine = false); 
30       
31protected:
32        /** Helper function used to initialise item buffer.
33        */
34        void InitItemBuffer(
35                                InfoContainer<GtpVisibility::NodeInfo> *visibleNodes,
36                            InfoContainer<GtpVisibility::MeshInfo> *visibleGeometry,
37                                InfoContainer<GtpVisibility::PatchInfo> *visiblePatches);
38       
39        /// if patches are used instead of meshes (only one at a time)
40        bool mRenderPatchesForItemBuffer;
41};
42
43} // namespace Ogre
44
45#endif // ItemBufferQueryManager
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