1 | #ifndef __INTERSECTABLE_H
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2 | #define __INTERSECTABLE_H
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3 |
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4 | #include "AxisAlignedBox3.h"
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5 | #include "Pvs.h"
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6 | #include <set>
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7 | #include "VssRay.h"
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8 |
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9 | namespace GtpVisibilityPreprocessor {
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10 |
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11 | struct VssRayContainer;
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12 | class KdLeaf;
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13 | class BvhLeaf;
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14 |
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15 | class Intersectable;
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16 | struct Face;
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17 |
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18 | struct FaceParentInfo {
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19 | // intersectable
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20 | Intersectable *mObject;
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21 | // face index
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22 | int mFaceIndex;
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23 |
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24 | FaceParentInfo(Intersectable *obj,
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25 | const int fi):
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26 | mObject(obj),
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27 | mFaceIndex(fi)
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28 | {}
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29 | };
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30 |
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31 | class Intersectable {
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32 | public:
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33 | // last mail id -> warning not thread safe!
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34 | // both mailId and mailbox should be unique for each thread!!!
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35 | static int sMailId;
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36 | static int sReservedMailboxes;
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37 | int mMailbox;
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38 |
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39 | /// unique object Id
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40 | int mId;
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41 |
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42 | /// universal counter
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43 | int mCounter;
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44 |
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45 | /// object based pvs
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46 | KdPvs mKdPvs;
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47 |
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48 | /// view cell based pvs per object
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49 | ViewCellPvs mViewCellPvs;
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50 |
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51 | /// pointer to the container bvh leaf
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52 | BvhLeaf *mBvhLeaf;
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53 |
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54 | VssRayContainer mVssRays;
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55 |
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56 | /// # of references to this instance
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57 | int mReferences;
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58 |
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59 | enum { MESH_INSTANCE,
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60 | TRANSFORMED_MESH_INSTANCE,
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61 | SPHERE,
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62 | VIEW_CELL,
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63 | OGRE_MESH_INSTANCE,
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64 | KD_INTERSECTABLE,
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65 | BVH_INTERSECTABLE
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66 | };
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67 |
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68 | Intersectable(): mMailbox(0), mReferences(0), mBvhLeaf(0) {}
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69 |
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70 | void SetId(const int id) { mId = id; }
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71 | int GetId() { return mId; }
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72 |
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73 | ////////////////////////////////////////////////
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74 | // Mailing stuff
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75 |
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76 | static void NewMail(const int reserve = 1) {
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77 | sMailId += sReservedMailboxes;
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78 | sReservedMailboxes = reserve;
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79 | }
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80 |
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81 | void Mail() { mMailbox = sMailId; }
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82 | bool Mailed() const { return mMailbox == sMailId; }
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83 |
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84 | void Mail(const int mailbox) { mMailbox = sMailId + mailbox; }
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85 | bool Mailed(const int mailbox) const { return mMailbox == sMailId + mailbox; }
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86 |
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87 | int IncMail() { return ++ mMailbox - sMailId; }
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88 |
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89 | ////////////////////////////////////////////////////
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90 | virtual AxisAlignedBox3 GetBox() const = 0;
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91 | virtual int CastRay(GtpVisibilityPreprocessor::Ray &ray) = 0;
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92 |
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93 | virtual bool IsConvex() const = 0;
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94 | virtual bool IsWatertight() const = 0;
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95 | virtual float IntersectionComplexity() = 0;
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96 |
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97 | virtual int NumberOfFaces() const = 0;
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98 | virtual int Type() const = 0;
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99 |
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100 | virtual int GetRandomSurfacePoint(Vector3 &point, Vector3 &normal) = 0;
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101 |
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102 | virtual int GetRandomVisibleSurfacePoint(Vector3 &point,
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103 | Vector3 &normal,
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104 | const Vector3 &viewpoint,
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105 | const int maxTries) = 0;
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106 |
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107 | virtual ostream &Describe(ostream &s) = 0;
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108 |
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109 | virtual int GenerateSilhouetteRays(const int nrays,
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110 | const AxisAlignedBox3 &originBox,
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111 | const AxisAlignedBox3 &directionBox, VssRayContainer &rays)
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112 | {
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113 | return 0;
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114 | }
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115 |
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116 | static bool GreaterCounter(const Intersectable *a,
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117 | const Intersectable *b)
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118 | {
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119 | return a->mCounter > b->mCounter;
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120 | }
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121 |
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122 | static string GetTypeName(Intersectable *obj)
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123 | {
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124 | switch(obj->Type())
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125 | {
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126 | case MESH_INSTANCE:
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127 | return "mesh_instance\n";
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128 |
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129 | case TRANSFORMED_MESH_INSTANCE:
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130 | return "transformed_mesh_instance\n";
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131 |
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132 | case SPHERE:
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133 | return "sphere\n";
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134 |
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135 | case VIEW_CELL:
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136 | return "view cell\n";
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137 |
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138 | case OGRE_MESH_INSTANCE:
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139 | return "ogre_mesh_instance\n";
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140 |
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141 | case KD_INTERSECTABLE:
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142 | return "kd_intersectable\n";
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143 |
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144 | default:
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145 | return "unknown\n";
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146 | }
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147 | }
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148 | };
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149 |
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150 |
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151 | }
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152 |
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153 | #endif
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