[2582] | 1 | // ===================================================================
|
---|
| 2 | // $Id: $
|
---|
| 3 | //
|
---|
| 4 | // ktball.h
|
---|
| 5 | // CKTB accelerating data structure for ray-shooting
|
---|
| 6 | //
|
---|
| 7 | // Class: CKTB
|
---|
| 8 | //
|
---|
| 9 | // REPLACEMENT_STRING
|
---|
| 10 | //
|
---|
| 11 | // Initial coding by Vlasta Havran
|
---|
| 12 |
|
---|
| 13 | #ifndef __KTBALL_H__
|
---|
| 14 | #define __KTBALL_H__
|
---|
| 15 |
|
---|
| 16 | // GOLEM headers
|
---|
| 17 | #include "configh.h"
|
---|
| 18 | //#include "ktbi.h"
|
---|
| 19 | #include "ktbai.h"
|
---|
| 20 | #include "ktbtrav.h"
|
---|
| 21 | #include "gzstream.h"
|
---|
| 22 |
|
---|
| 23 | namespace GtpVisibilityPreprocessor {
|
---|
| 24 |
|
---|
| 25 | // forward declarations
|
---|
| 26 | class CKTBAllocMan;
|
---|
| 27 | class RayPacket2x2;
|
---|
| 28 |
|
---|
| 29 | // ----------------------------------------------------------
|
---|
| 30 | // ----------------------------------------------------------
|
---|
| 31 | // ----------------------------------------------------------
|
---|
| 32 | // the CASDS describing CKTB itself, the interface object to
|
---|
| 33 | // the other objects for CKTB tree building up and traversing
|
---|
| 34 | class CKTB
|
---|
| 35 | // : public CASDS_BB
|
---|
| 36 | {
|
---|
| 37 | protected:
|
---|
| 38 | // True if the data structure is built up
|
---|
| 39 | bool builtUp;
|
---|
| 40 |
|
---|
| 41 | // the box bounding the whole scene
|
---|
| 42 | AxisAlignedBox3 bbox;
|
---|
| 43 |
|
---|
| 44 | // the number of objects in the case the object list is
|
---|
| 45 | // not copied to this->objlist
|
---|
| 46 | int countObjects;
|
---|
| 47 |
|
---|
| 48 | // precomputed cost for intersection of kd-tree with arbitrary ray
|
---|
| 49 | float _expectedIntersectionCost;
|
---|
| 50 |
|
---|
| 51 | // the class which serves as builder of CKTB tree
|
---|
| 52 | CKTBAllocManPredecessor *buildClass;
|
---|
| 53 |
|
---|
| 54 | // the class that provides traversing through CKTB tree
|
---|
| 55 | CKTBNodeIteratorPredecessor *traversalClass;
|
---|
| 56 |
|
---|
| 57 | // if we use min boxes enhancement
|
---|
| 58 | bool makeMinBoxes;
|
---|
| 59 | // if we want to make boxing with only tight boxes
|
---|
| 60 | bool makeTightMinBoxes;
|
---|
| 61 |
|
---|
| 62 | // the size of 2D buffer
|
---|
| 63 | int size2D;
|
---|
| 64 | int index2D;
|
---|
| 65 | // the indices in the buffer
|
---|
| 66 | int indexRead, indexWrite;
|
---|
| 67 | // the distance between two rays, where a new buffer of box nodes is written
|
---|
| 68 | int distSLCTS;
|
---|
| 69 |
|
---|
| 70 | // Whether we use SLCTS boxes for FindNearest
|
---|
| 71 | bool useSLCTS;
|
---|
| 72 |
|
---|
| 73 | // construct traversal class for CKTB Trees
|
---|
| 74 | void AllocTraversalClass();
|
---|
| 75 |
|
---|
| 76 | // provide the parameters for construction of CKTB tree to stream
|
---|
| 77 | void ProvidePars(ostream &app);
|
---|
| 78 |
|
---|
| 79 | // builds up CKTB tree without unbounded objects. The 'boxToInclude
|
---|
| 80 | // is a box that can be optionally given and the kd-tree constructed
|
---|
| 81 | // must contain such a box. The 'boxToBoundObjects' when given, is
|
---|
| 82 | // a box to which the objects boxes are bounded. This is used for special
|
---|
| 83 | // cases such a multilevel kd-trees.
|
---|
| 84 | void BuildingUp(ObjectContainer& objlist,
|
---|
| 85 | const AxisAlignedBox3 *boxToInclude = 0,
|
---|
| 86 | const AxisAlignedBox3 *boxToBoundObjects = 0,
|
---|
| 87 | bool verbose = true);
|
---|
| 88 |
|
---|
| 89 | // create the array of pointers to objects addressable by object uniqueID
|
---|
| 90 | void CreatePointerArray(ObjectContainer &arrobjlist,
|
---|
| 91 | int objCounterOffset);
|
---|
| 92 |
|
---|
| 93 | // checks the boxes of all objects if they are not flat somehow
|
---|
| 94 | bool CheckBoxes(ObjectContainer& objlist);
|
---|
| 95 |
|
---|
| 96 | protected:
|
---|
| 97 | // statistics
|
---|
| 98 | int numElemCells;
|
---|
| 99 | int numEmptyElemCells;
|
---|
| 100 | float emptyVolume;
|
---|
| 101 | float nonEmptyVolume;
|
---|
| 102 | int numSolidsInElemCells;
|
---|
| 103 | int actMaxListLen;
|
---|
| 104 | int numHierCells;
|
---|
| 105 | int actMaxDepth;
|
---|
| 106 | float sumSurfaceAreaLeaves;
|
---|
| 107 | float sumSurfaceAreaMULcntLeaves;
|
---|
| 108 | float sumSurfaceAreaInteriorNodes;
|
---|
| 109 |
|
---|
| 110 | public:
|
---|
| 111 | // default constructor
|
---|
| 112 | CKTB();
|
---|
| 113 |
|
---|
| 114 | // default destructor
|
---|
| 115 | ~CKTB();
|
---|
| 116 |
|
---|
| 117 | void BuildUp(const ObjectContainer &objlist);
|
---|
| 118 |
|
---|
| 119 | // functions that allows correctly traverse recursively allowing to have
|
---|
| 120 | // the same traversal stack
|
---|
| 121 | void TraversalReset();
|
---|
| 122 |
|
---|
| 123 | void StatsReset() {
|
---|
| 124 | if (traversalClass)
|
---|
| 125 | traversalClass->DynamicStatsReset();
|
---|
| 126 | }
|
---|
| 127 |
|
---|
| 128 | bool HandleUnboundeds() const { return true;}
|
---|
| 129 |
|
---|
| 130 | void GetBBox(AxisAlignedBox3 &box) { box = bbox;}
|
---|
| 131 |
|
---|
| 132 | void PrintStats();
|
---|
| 133 |
|
---|
| 134 | // Delete all the data structures
|
---|
| 135 | void Remove();
|
---|
| 136 |
|
---|
| 137 | void ProvideID(ostream &app);
|
---|
| 138 |
|
---|
| 139 | float ExpectecteRayIntersectionCost() const {
|
---|
| 140 | return _expectedIntersectionCost;
|
---|
| 141 | }
|
---|
| 142 |
|
---|
| 143 | // describe the toplogy of CKTB to a given stream
|
---|
| 144 | void DescribeTopology(const string &filename,
|
---|
| 145 | int objCounterOffset,
|
---|
| 146 | int format) { }
|
---|
| 147 |
|
---|
| 148 | // Not yet implemented
|
---|
| 149 | bool RestoreTopology(const string &filename,
|
---|
| 150 | long int streamOffset,
|
---|
| 151 | const ObjectContainer &objects,
|
---|
| 152 | int objCounterOffset,
|
---|
| 153 | int format) { return true; }
|
---|
| 154 |
|
---|
| 155 | // allocate new build class and return it
|
---|
[2629] | 156 | CKTBAllocManPredecessor* AllocBuildClass();
|
---|
[2582] | 157 |
|
---|
| 158 | CKTBNodeIteratorPredecessor* GetTraversalClass() {
|
---|
| 159 | return traversalClass;
|
---|
| 160 | }
|
---|
| 161 |
|
---|
| 162 | CKTBAllocManPredecessor* GetBuildClass() {
|
---|
| 163 | return buildClass;
|
---|
| 164 | }
|
---|
| 165 | void SetBuildClass(CKTBAllocManPredecessor *build) {
|
---|
| 166 | buildClass = build;
|
---|
| 167 | }
|
---|
| 168 | void DeleteBuildClass();
|
---|
| 169 |
|
---|
| 170 | // Here are the functions required from CASDS interface
|
---|
| 171 | void GatherStats(bool itself = false);
|
---|
| 172 | void GatherPostStats();
|
---|
| 173 | void* Locate(const Vector3 &loc);
|
---|
| 174 |
|
---|
| 175 | int FindNearestI(const SimpleRay &ray);
|
---|
[2602] | 176 | int FindNearestI(const SimpleRay &ray, const Vector3 &boxMin, const Vector3 &boxMax);
|
---|
[2582] | 177 | void SetOffset(int offset) { traversalClass->SetOffset(offset); }
|
---|
[2592] | 178 | int FindNearestI_16oneDir(SimpleRayContainer &rays, int offset, int copyOffset) {
|
---|
| 179 | return traversalClass->FindNearestI_16oneDir(rays, offset, copyOffset);
|
---|
[2582] | 180 | }
|
---|
[2592] | 181 | int FindNearestI_16oneDirNoSSE(SimpleRayContainer &rays, int offset) {
|
---|
| 182 | return traversalClass->FindNearestI_16oneDirNoSSE(rays, offset);
|
---|
[2582] | 183 | }
|
---|
| 184 | int FindNearestI_16twoDir(SimpleRayContainer &rays) {
|
---|
| 185 | return traversalClass->FindNearestI_16twoDir(rays);
|
---|
| 186 | }
|
---|
| 187 |
|
---|
| 188 | #ifdef __SSE__
|
---|
[2592] | 189 | #ifdef _USE_HAVRAN_SSE
|
---|
[2582] | 190 | // The same operations for packets of rays, if implemented by
|
---|
| 191 | // a particular ASDS, otherwise it is emulated by decomposition
|
---|
| 192 | // of a packet to individual rays and traced individually.
|
---|
| 193 | void FindNearestI(RayPacket2x2 &raypack);
|
---|
[2602] | 194 | void FindNearestI(RayPacket2x2 &raypack, const Vector3 &boxMin, const Vector3 &boxMax);
|
---|
[2592] | 195 | #endif
|
---|
[2582] | 196 | #else
|
---|
| 197 | void FindNearestI(RayPacket2x2 &raypack) { }
|
---|
[2602] | 198 | void FindNearestI(RayPacket2x2 &raypack, const Vector3 &boxMin, const Vector3 &boxMax) { }
|
---|
[2582] | 199 | #endif // __SSE__
|
---|
| 200 |
|
---|
| 201 | // Loading and saving
|
---|
| 202 | void ExportBinLeaf(OUT_STREAM &stream, SKTBNodeT *leaf);
|
---|
| 203 | SKTBNodeT* ImportBinLeaf(IN_STREAM &stream,
|
---|
[2592] | 204 | SKTBNodeT **nodeToLink,
|
---|
[2582] | 205 | const ObjectContainer &objects);
|
---|
[2592] | 206 |
|
---|
[2582] | 207 | void ExportBinInterior(OUT_STREAM &stream, SKTBNodeT *interior);
|
---|
[2592] | 208 | SKTBNodeT *ImportBinInterior(IN_STREAM &stream,
|
---|
| 209 | SKTBNodeT **nodeToLink);
|
---|
| 210 |
|
---|
| 211 | SKTBNodeT * ImportNextNode(IN_STREAM &stream,
|
---|
| 212 | SKTBNodeT **nodeToLink,
|
---|
| 213 | const ObjectContainer &objects);
|
---|
| 214 |
|
---|
[2582] | 215 | bool ExportBinTree(const string &filename);
|
---|
[2592] | 216 | bool ImportBinTree(const string &filename, ObjectContainer &objects);
|
---|
| 217 |
|
---|
[2582] | 218 |
|
---|
| 219 | protected:
|
---|
| 220 | // The 2D array of pointers to the interior nodes with boxes.
|
---|
| 221 | SKTBNodeT ***buffer;
|
---|
| 222 | int sizeBuffer, size1D;
|
---|
| 223 | void AllocBuffer(int size2D, int size1Dv);
|
---|
[2592] | 224 |
|
---|
| 225 | struct STraversalData
|
---|
| 226 | {
|
---|
| 227 | SKTBNodeT *mNode;
|
---|
| 228 | int dir;
|
---|
| 229 | int depth;
|
---|
| 230 | STraversalData() {}
|
---|
| 231 |
|
---|
| 232 | STraversalData(SKTBNodeT *n): mNode(n)
|
---|
| 233 | { }
|
---|
| 234 |
|
---|
| 235 | STraversalData(SKTBNodeT *n, int ndir, int ndepth):
|
---|
| 236 | mNode(n), dir(ndir), depth(ndepth) { }
|
---|
| 237 | };
|
---|
[2582] | 238 | };
|
---|
| 239 |
|
---|
| 240 | }
|
---|
| 241 |
|
---|
| 242 | #endif // __KTBALL_H__
|
---|