1 | #ifndef __SCENEENTITY_H
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2 | #define __SCENEENTITY_H
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3 |
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4 | #include "common.h"
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5 | #include "AxisAlignedBox3.h"
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6 | #include "Triangle3.h"
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7 | #include "LODInfo.h"
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8 |
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9 |
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10 | namespace CHCDemoEngine
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11 | {
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12 |
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13 | class Material;
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14 | class Geometry;
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15 | class RenderState;
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16 | class Transform3;
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17 | class Camera;
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18 |
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19 |
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20 | /** Class representing a scene entity.
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21 | A scene entity basically consists of geometry, transformation, and a material
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22 | */
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23 | class SceneEntity
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24 | {
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25 | friend class RenderQueue;
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26 | friend class EntityMerger;
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27 |
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28 | public:
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29 |
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30 | /** Creates a scene entity.
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31 | */
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32 | SceneEntity(Transform3 *trafo);
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33 | /** Copy constructur.
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34 | */
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35 | //SceneEntity(const SceneEntity &e);
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36 | /** Destructor.
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37 | */
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38 | virtual ~SceneEntity();
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39 | /** Renders this node.
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40 | */
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41 | virtual void Render(RenderState *state);
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42 | /** Set pointer to the shape
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43 | */
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44 | void AddShape(Shape *shape);
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45 | /** See set
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46 | */
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47 | inline Shape *GetShape(int i) const { return mShapes[i]; }
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48 | /** Returns number of shapes in vector.
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49 | */
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50 | inline int GetNumShapes() { return (int)mShapes.size(); }
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51 | /** Set pointer to the geometry
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52 | */
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53 | void SetTransform(Transform3 *trafo);
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54 | /** set frame where we last rendered this node
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55 | */
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56 | void SetLastRendered(int lastRendered);
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57 | /** returns frame where we last visited this node
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58 | */
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59 | int GetLastRendered() const;
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60 | /** Returns the trafo of this scene entity.
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61 | */
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62 | inline Transform3 *GetTransform() const { return mTransform; }
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63 | /** Counts number of triangles in this entity using the specified lod level
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64 | with 0 being the highest or the current lod level (if the argument is -1).
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65 | */
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66 | int CountNumTriangles(int lodLevel = -1);
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67 | /** Returns the local bounding box.
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68 | */
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69 | AxisAlignedBox3 GetBoundingBox() const;
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70 | /** Returns the transformed bounding box.
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71 | */
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72 | AxisAlignedBox3 GetWorldBoundingBox() const;
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73 |
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74 |
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75 |
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76 | ////////////////
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77 |
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78 |
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79 | /** Returns shapes of specified lod level
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80 | */
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81 | void GetLODLevel(int level, ShapeContainer::iterator &start, ShapeContainer::iterator &end);
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82 | /** Returns shapes of current lod level
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83 | */
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84 | void GetCurrentLODLevel(ShapeContainer::iterator &start, ShapeContainer::iterator &end);
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85 | /** Adds a new lod level.
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86 | */
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87 | void AddLODLevel(const LODLevel &lod) { mLODLevels.push_back(lod); }
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88 | /** Returns numbers of lod levels.
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89 | */
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90 | int GetNumLODLevels() const { return (int)mLODLevels.size(); }
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91 | /** Returns transformed center point of this shape.
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92 | */
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93 | Vector3 GetWorldCenter() const;
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94 | /** If false, the highest (most detailed) LOD level is used for all entities.
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95 | */
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96 | static void SetUseLODs(bool useLODs) { sUseLODs = useLODs; }
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97 |
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98 | static bool GetUseLODs() { return sUseLODs; }
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99 |
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100 |
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101 |
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102 | protected:
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103 |
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104 | /** Internally updates current lod level.
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105 | */
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106 | void UpdateLODs(const Vector3 &viewPoint);
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107 | /** Returns updated index of current lod level.
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108 | */
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109 | int GetCurrentLODLevel();
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110 |
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111 |
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112 | /// the bounding box
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113 | AxisAlignedBox3 mBox;
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114 | /// describes a 3D transform
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115 | Transform3 *mTransform;
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116 | /// Stores information about the LOD levels
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117 | LODLevelArray mLODLevels;
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118 | /// the renderable shapes
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119 | ShapeContainer mShapes;
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120 | /// when this entity was last rendered
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121 | int mLastRendered;
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122 | /// the LOD level currently used for rendering
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123 | int mCurrentLODLevel;
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124 | /// frame number in which the LODs were last updated
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125 | int mLODLastUpdated;
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126 | /// the center of gravity of this entity
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127 | Vector3 mCenter;
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128 |
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129 | static bool sUseLODs;
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130 | };
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131 |
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132 | }
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133 |
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134 | #endif // __SCENEENTITY_H |
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