1 | #ifndef _SceneGraph_H__
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2 | #define _SceneGraph_H__
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3 |
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4 | #include <string>
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5 | #include "Containers.h"
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6 | #include "AxisAlignedBox3.h"
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7 | #include "Matrix4x4.h"
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8 |
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9 | namespace GtpVisibilityPreprocessor {
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10 |
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11 | class SceneGraphLeafIntersectable; |
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12 | class CKTB; |
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13 | |
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14 | |
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15 | /** Basic scene graph node, we are interested only in bounding boxes and topology |
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16 | of the scene graph |
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17 | */ |
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18 | class SceneGraphNode |
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19 | { |
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20 | public:
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21 |
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22 | virtual ~SceneGraphNode();
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23 | virtual bool IsLeaf() const = 0; |
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24 | |
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25 | virtual void UpdateBox() = 0;
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26 | |
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27 | virtual AxisAlignedBox3 GetBox() const { return mBox; } |
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28 | |
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29 | protected: |
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30 | |
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31 | AxisAlignedBox3 mBox; |
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32 | }; |
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33 | |
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34 | |
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35 | |
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36 | /** Scene graph interior node. |
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37 | */ |
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38 | class SceneGraphInterior: public SceneGraphNode |
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39 | { |
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40 | public: |
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41 | virtual bool IsLeaf() const { return false; } |
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42 | virtual void UpdateBox();
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43 | |
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44 | ~SceneGraphInterior(); |
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45 | |
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46 | //protected: |
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47 | |
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48 | SceneGraphNodeContainer mChildren; |
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49 | }; |
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50 | |
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51 | |
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52 | /** Scene graph leaf node. |
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53 | */ |
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54 | class SceneGraphLeaf: public SceneGraphNode |
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55 | { |
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56 | public: |
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57 | |
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58 | SceneGraphLeaf(); |
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59 | SceneGraphLeaf(bool isDynamic); |
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60 | ~SceneGraphLeaf(); |
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61 |
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62 | void LoadTransform(const Matrix4x4 &m);
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63 |
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64 | void GetTransform(Matrix4x4 &m) const;
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65 |
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66 | virtual AxisAlignedBox3 GetBox() const;
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67 | |
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68 | virtual void ApplyTransform(const Matrix4x4 &trafo); |
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69 | virtual bool IsDynamic() const { return mIsDynamic;} |
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70 | virtual bool IsLeaf() const { return true; } |
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71 | virtual void UpdateBox();
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72 |
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73 | #if DYNAMIC_OBJECTS_HACK |
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74 | SceneGraphLeafIntersectable *GetIntersectable() { return mIntersectable; } |
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75 | #endif |
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76 | |
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77 | /// used as actual pvs entry |
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78 | ObjectContainer mGeometry; |
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79 | const Matrix4x4 &GetTransformation() const { return mTrafo; } |
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80 | protected: |
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81 | |
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82 | #if DYNAMIC_OBJECTS_HACK |
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83 | |
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84 | SceneGraphLeafIntersectable *mIntersectable; |
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85 | CKTB *mKtbTree; |
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86 | |
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87 | #endif |
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88 | |
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89 | bool mIsDynamic; |
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90 | Matrix4x4 mTrafo; |
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91 | }; |
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92 |
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93 |
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94 |
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95 | /** Scene graph class
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96 | */
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97 | class SceneGraph
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98 | {
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99 |
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100 | public:
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101 |
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102 | SceneGraph();
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103 | ~SceneGraph();
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104 |
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105 | bool Export(const std::string filename);
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106 |
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107 | int CollectObjects(ObjectContainer &instances);
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108 |
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109 | int AssignObjectIds();
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110 |
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111 | void GetStatistics(int &intersectables, int &faces) const;
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112 |
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113 | AxisAlignedBox3 GetBox() const { return mRoot->GetBox(); }
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114 | /** Exports binary version of the scene.
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115 | */
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116 | void ExportScene(const std::string filename);
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117 | /** Loads binary version of the scene.
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118 | */
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119 | void LoadScene(const std::string filename);
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120 |
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121 | SceneGraphInterior *GetRoot();
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122 |
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123 | //void SetRoot(SceneGraphNode *sgNnode);
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124 | void SetRoot(SceneGraphInterior *sgNnode);
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125 |
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126 | void AddChild(SceneGraphNode *node);
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127 |
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128 | int GetSize() const;
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129 |
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130 | protected:
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131 |
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132 | SceneGraphInterior *mRoot;
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133 | };
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134 |
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135 |
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136 | }
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137 |
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138 | #endif
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