[980] | 1 | /*==========================================================================
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[774] | 2 | * (C) 2005 Universidad Jaime I de Castellón
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[980] | 3 | *==========================================================================
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[774] | 4 | * PROYECT: GAME TOOLS
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[980] | 5 | *==========================================================================*/
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| 6 | /* CONTENT:
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| 7 | *
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| 8 | *
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| 9 | * @file GeoLodStripsLibrary.h
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| 10 | *==========================================================================*/
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[774] | 11 |
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[829] | 12 | #ifndef _GEOLODSTRIPSLIBRARY
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| 13 | #define _GEOLODSTRIPSLIBRARY
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| 14 |
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[774] | 15 | #include "GeoMesh.h"
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| 16 | #include <vector>
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| 17 | #include <time.h>
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| 18 |
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| 19 | namespace Geometry
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| 20 | {
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| 21 | //typedef unsigned long int SmallInt;
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| 22 | typedef unsigned long SmallInt;
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[1009] | 23 | typedef unsigned long ULong;
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| 24 | typedef long Long;
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[774] | 25 |
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| 26 | typedef struct
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| 27 | {
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| 28 | SmallInt strip;
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| 29 | SmallInt position;
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| 30 | SmallInt rep; //For the vertex repetition
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| 31 | } PositionType;
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| 32 |
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| 33 | typedef struct
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| 34 | {
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| 35 | unsigned long strip;
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| 36 | char position;
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| 37 | char vertexRepetition;
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| 38 | char edgeRepetition;
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| 39 | } LODRegisterType;
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| 40 |
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| 41 | typedef struct
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| 42 | {
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| 43 | float Vertex[3];
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| 44 | SmallInt Next;
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| 45 | } VertexType;
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| 46 |
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| 47 | typedef std::vector <SmallInt> SmallIntVector;
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| 48 | typedef std::vector <LODRegisterType> LODRegisterVector;
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| 49 | typedef std::vector <Long> LongVector;
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| 50 |
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| 51 | /// LodStripsLibrary interface class.
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[1014] | 52 | /** This module contains functions that handle the levels of detail
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| 53 | * of the input multiresolution objects made of polygonal meshes.
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| 54 | * For any given resolution and object, this module returns a set
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| 55 | * of triangle strips representing the object at that resolution,
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| 56 | * that is, at the level of detail requested. These models use
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| 57 | * triangle strips to reduce storage usage and to speed up realistic
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| 58 | * rendering.
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[774] | 59 | \n\n
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| 60 |
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| 61 | Inputs:\n
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| 62 | - The module receives a file describing a multiresolution object.
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| 63 | .
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| 64 |
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| 65 | Outputs:\n
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[1014] | 66 | - The module returns a strip set that represents the level of
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| 67 | detail requested.
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[774] | 68 | .
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| 69 |
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| 70 | */
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| 71 | class LodStripsLibrary
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| 72 | {
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| 73 | private:
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[1014] | 74 |
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| 75 | // The name of the object.
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| 76 | String mName;
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[774] | 77 |
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[1014] | 78 | // Structures with the data read from the file
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| 79 | // We won't work with these structures
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[774] | 80 | SmallIntVector mFileVertices;
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| 81 | std::vector <LODRegisterType> mFileChangesLOD;
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| 82 | std::vector <SmallIntVector> mFileStrips;
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| 83 | LongVector mData;
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| 84 |
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[1014] | 85 | // Structures with the data to work with
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[774] | 86 |
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[1014] | 87 | // Total strips of the multiresolution object.
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| 88 | SmallInt mTotalStrips;
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| 89 |
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| 90 | // Total vertices of the multiresolution object.
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| 91 | SmallInt mTotalVertices;
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| 92 |
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| 93 | // Number of vertices of the max LOD.
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| 94 | SmallInt mMaxVerticesLOD;
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| 95 |
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| 96 | // Total changes of the multiresolution object.
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| 97 | SmallInt mTotalChanges;
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| 98 |
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| 99 | SmallInt mLods; // Available Lods.
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| 100 | SmallInt mMaxLod; // Max level of detail.
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| 101 | SmallInt mMinLod; // Min level of detail.
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| 102 | SmallInt mCurrentLod; // Current Lod.
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| 103 |
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[774] | 104 | // For the efficient version.
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| 105 | SmallInt mTotalFaces;
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| 106 | SmallInt *mCurrentData;
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| 107 | SmallInt *mStripsChanges;
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| 108 | LODRegisterType *mCurrentRegLOD;
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| 109 | SmallInt *mVertex;
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| 110 |
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| 111 | // Changes of Strips in LOD file (p).
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| 112 | SmallInt *mPChanges;
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| 113 |
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| 114 | ///Total of vertices shown at the moment.
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| 115 | long int mTotal;
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| 116 |
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| 117 | // Global mesh object.
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| 118 | Mesh *mGeoMesh;
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| 119 |
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[1009] | 120 | // Copa STL vectors to C arrays.
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[774] | 121 | void CopyVectors2Arrays();
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| 122 |
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[1009] | 123 | // Loads Mesh.
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[774] | 124 | void LoadStripMesh(char *name, Mesh *geomesh);
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| 125 |
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| 126 | public:
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| 127 |
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| 128 | // Strips vector.
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| 129 | SmallIntVector *mStrips;
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| 130 |
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[1014] | 131 | /** Constructor, receives as a parameter the name of the file
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| 132 | * including the multiresolution object.
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| 133 | */
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[774] | 134 | LodStripsLibrary(std::string, Mesh *geomesh);
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| 135 |
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| 136 | /// Destructor.
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| 137 | ~LodStripsLibrary(void);
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| 138 |
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| 139 | /// Copy constructor
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| 140 | //LodStripsLibrary(const LodStripsLibrary&);
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| 141 |
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| 142 | /// Assignment operator
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| 143 | //LodStripsLibrary& operator =(const LodStripsLibrary&);
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| 144 |
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| 145 | /// Returns the highest LOD.
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| 146 | uint32 MaxLod();
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| 147 |
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| 148 | /// Returns the lowest LOD.
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| 149 | uint32 MinLod();
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| 150 |
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| 151 | /// Returns de current LOD and changes to the specified LOD.
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| 152 | uint32 GoToLod(uint32);
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| 153 |
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| 154 | /// Establishes the new LOD range.
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| 155 | /// Only the LODs in that range are stored and used.
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| 156 | void TrimByLod(uint32, uint32);
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| 157 |
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| 158 | /// Returns the number of triangles of the highest LOD.
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| 159 | uint32 MaxFaces();
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| 160 |
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| 161 | /// Returns the number of triangles of the lowest LOD.
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| 162 | uint32 MinFaces();
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| 163 |
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| 164 | /// Returns the number of vertices of the highest LOD.
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| 165 | uint32 MaxVertices();
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| 166 |
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| 167 | /// Returns the number of vertices of the lowest LOD.
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| 168 | uint32 MinVertices();
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| 169 |
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| 170 | // (New) Get the number of strips.
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[829] | 171 | uint32 GetStripCount() const;
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| 172 | uint32 GetIndexCountByStrip(uint32) const;
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[774] | 173 | };
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| 174 | }
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| 175 |
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[980] | 176 | #endif
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[1009] | 177 |
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