source: trunk/VUT/GtpVisibilityPreprocessor/include/Preprocessor.h @ 439

Revision 439, 2.6 KB checked in by mattausch, 19 years ago (diff)

added vview cell manager functionality

  • Property svn:executable set to *
Line 
1#ifndef _Preprocessor_H__
2#define _Preprocessor_H__
3
4#include "Containers.h"
5#include "Mesh.h"
6#include "KdTree.h"
7#include "ViewCellBsp.h"
8#include "SceneGraph.h"
9#include <string>
10
11/** Namespace for the external visibility preprocessor
12
13    This namespace includes all classes which are created by the VUT (Vienna University
14    of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project)
15    (www.gametools.org).
16 */
17namespace GtpVisibilityPreprocessor {
18  /** Main class of the visibility preprocessor. Responsible for loading and
19      saving of the input and output files. Initiates construction of the kD-tree,
20      viewcell loading/generation and the visibility computation itself.
21  */
22  class Preprocessor {
23  public:
24    /** Load the input scene.
25        @param filename file to load
26        @return true on success
27    */
28    virtual bool LoadScene(const string filename);
29
30    /** Generate the viewCells automatically. The particular algorithm to be used depends
31        on the environment setting. Initially the generated viewcells will cover the whole
32        bounding volume of the scene. They can be pruned later depending on the results
33        of visibility computations.
34        @return true on successful viewcell generation.
35    */
36    virtual bool GenerateViewCells();
37   
38    /** Export all preprocessed data in a XML format understandable by the
39        PreprocessingInterface of the GtpVisibilityPreprocessor Module. The file can be compressed depending
40        on the environement settings.
41        @return true on successful export
42    */
43    virtual bool ExportPreprocessedData(const string filename);
44
45    /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction
46        is driven by the environment settings, which also sais which of the three types of
47        entities should be used to drive the heuristical construction (only occluders by default)
48    */
49    virtual bool BuildKdTree();
50
51    /** Compute visibility method. This method has to be reimplemented by the actual
52        Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor,
53        GlobalSamplingpreprocessor)
54    */
55    virtual bool ComputeVisibility() = 0;
56
57
58  protected:
59    /// scene graph loaded from file
60    SceneGraph *mSceneGraph;
61    /// BSP tree representing the viewcells
62    BspTree *mViewCellBspTree;
63    /// kD-tree organizing the scene graph (occluders + occludees) + viewcells
64    KdTree *mKdTree;
65
66    /// list of all loaded occluders
67    MeshContainer mOccluders;
68    /// list of all loaded occludees
69    MeshContainer mOccludees;
70    /// list of all loaded/generated viewcells
71    ViewCellContainer mViewcells;
72
73  };
74 
75};
76
77
78
79
80#endif
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