[162] | 1 | #ifndef __INTERSECTABLE_H
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| 2 | #define __INTERSECTABLE_H
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| 3 |
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[176] | 4 | #include "AxisAlignedBox3.h"
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| 5 | #include "Pvs.h"
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[1074] | 6 | #include <set>
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[1184] | 7 | #include "VssRay.h"
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[1867] | 8 | #include "Mailable.h"
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[162] | 9 |
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[860] | 10 | namespace GtpVisibilityPreprocessor {
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| 11 |
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[497] | 12 | struct VssRayContainer;
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[1072] | 13 | class KdLeaf;
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[1233] | 14 | class BvhLeaf;
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[1680] | 15 | class BvhNode;
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[1281] | 16 | class Intersectable;
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| 17 | struct Face;
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[1233] | 18 |
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[1344] | 19 |
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[2066] | 20 | struct FaceParentInfo
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| 21 | {
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[1344] | 22 | /// intersectable
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| 23 | Intersectable *mObject;
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| 24 | /// face index
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| 25 | int mFaceIndex;
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| 26 |
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| 27 | FaceParentInfo(Intersectable *obj, const int fi):
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| 28 | mObject(obj), mFaceIndex(fi)
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| 29 | {}
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[1281] | 30 | };
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| 31 |
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[1344] | 32 |
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[2066] | 33 | class Intersectable
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| 34 | {
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[176] | 35 | public:
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[1999] | 36 |
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[1072] | 37 | /// unique object Id
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[811] | 38 | int mId;
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[1579] | 39 |
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[1072] | 40 | /// universal counter
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[811] | 41 | int mCounter;
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[1077] | 42 |
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[1680] | 43 | /// pointer to the containing bvh leaf
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[1233] | 44 | BvhLeaf *mBvhLeaf;
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[1696] | 45 |
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[1570] | 46 | ///////////////////////
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| 47 |
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[1135] | 48 | enum { MESH_INSTANCE,
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| 49 | TRANSFORMED_MESH_INSTANCE,
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| 50 | SPHERE,
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| 51 | VIEW_CELL,
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| 52 | OGRE_MESH_INSTANCE,
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[1233] | 53 | KD_INTERSECTABLE,
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[1314] | 54 | BVH_INTERSECTABLE,
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[1615] | 55 | TRIANGLE_INTERSECTABLE,
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[2066] | 56 | DUMMY_INTERSECTABLE,
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| 57 | ENGINE_INTERSECTABLE,
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[1135] | 58 | };
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[162] | 59 |
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[2066] | 60 | Intersectable();
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[245] | 61 |
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[2066] | 62 | virtual ~Intersectable();
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[1615] | 63 |
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[1579] | 64 | void SetId(const int id) { mId = id; }
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| 65 | int GetId() { return mId; }
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| 66 |
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[2066] | 67 | /////////////
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| 68 | // Mailing stuff
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[1579] | 69 |
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[2066] | 70 | static void NewMail(const int reserve = 1)
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| 71 | {
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| 72 | sMailId += sReservedMailboxes;
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| 73 | sReservedMailboxes = reserve;
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[1579] | 74 | }
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[339] | 75 |
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[1579] | 76 | void Mail() { mMailbox = sMailId; }
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| 77 | bool Mailed() const { return mMailbox == sMailId; }
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| 78 |
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| 79 | void Mail(const int mailbox) { mMailbox = sMailId + mailbox; }
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| 80 | bool Mailed(const int mailbox) const { return mMailbox == sMailId + mailbox; }
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| 81 |
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| 82 | int IncMail() { return ++ mMailbox - sMailId; }
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[382] | 83 |
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[1999] | 84 | // last mail id -> warning not thread safe!
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| 85 | // both mailId and mailbox should be unique for each thread!!!
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| 86 | static int sMailId;
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| 87 | static int sReservedMailboxes;
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| 88 |
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| 89 | /// Mailbox used for traversals
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| 90 | int mMailbox;
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| 91 |
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| 92 |
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[2066] | 93 | ////////////////
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| 94 | // virtual interface
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| 95 |
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[1579] | 96 | virtual AxisAlignedBox3 GetBox() const = 0;
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[1743] | 97 | virtual int CastRay(Ray &ray) = 0;
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[176] | 98 |
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[1579] | 99 | virtual bool IsConvex() const = 0;
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| 100 | virtual bool IsWatertight() const = 0;
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| 101 | virtual float IntersectionComplexity() = 0;
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| 102 |
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| 103 | virtual int NumberOfFaces() const = 0;
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| 104 | virtual int Type() const = 0;
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[2066] | 105 |
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[1579] | 106 | virtual int GetRandomSurfacePoint(Vector3 &point, Vector3 &normal) = 0;
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[2066] | 107 |
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[1763] | 108 | virtual int GetRandomEdgePoint(Vector3 &point,
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| 109 | Vector3 &normal) = 0;
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| 110 |
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[1687] | 111 | virtual int GetRandomVisibleSurfacePoint(Vector3 &point,
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[1696] | 112 | Vector3 &normal,
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| 113 | const Vector3 &viewpoint,
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| 114 | const int maxTries) = 0;
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[1166] | 115 |
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[2066] | 116 | // virtual int GetRandomPoint(Vector3 &point,
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| 117 | // vector3 &normal) = 0;
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[1990] | 118 |
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[1687] | 119 | virtual ostream &Describe(ostream &s) = 0;
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[1166] | 120 |
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[2066] | 121 | //////////////////////////////////////
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[1166] | 122 |
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| 123 |
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[2066] | 124 | virtual int GenerateSilhouetteRays(const int nrays,
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| 125 | const AxisAlignedBox3 &originBox,
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| 126 | const AxisAlignedBox3 &directionBox,
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| 127 | VssRayContainer &rays);
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| 128 |
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| 129 | virtual int GetRandomSurfacePoint(const float u,
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| 130 | const float v,
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| 131 | Vector3 &point,
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| 132 | Vector3 &normal);
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[1344] | 133 |
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[2066] | 134 | virtual float GetArea() const;
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[1687] | 135 |
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[2066] | 136 | static bool GreaterCounter(const Intersectable *a,
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| 137 | const Intersectable *b);
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[1687] | 138 |
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[2066] | 139 | /** Returns the name of the type of this intersectable
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[1687] | 140 | */
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[2066] | 141 | static string GetTypeName(Intersectable *obj);
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[1696] | 142 |
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[2066] | 143 | /** Returns normal from the face with the specified index.
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| 144 | PROBLEM: Does not fit to all intersectable types (e.g., spheres)
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| 145 | */
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| 146 | virtual Vector3 GetNormal(const int idx) const;
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[1696] | 147 |
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[2066] | 148 | /** Returns rays stored with this intersectable.
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| 149 | */
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| 150 | VssRayContainer *GetOrCreateRays();
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[1696] | 151 |
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[2066] | 152 | /** Deletes the rays associated with this intersectable.
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| 153 | */
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| 154 | void DelRayRefs();
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| 155 |
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[1696] | 156 | protected:
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| 157 |
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[2066] | 158 | /// some rays piercing this intersectable
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| 159 | VssRayContainer *mVssRays;
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[162] | 160 | };
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| 161 |
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[1135] | 162 |
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[860] | 163 | }
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[162] | 164 |
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| 165 | #endif
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