[694] | 1 | #include "mpi.hpp" |
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[688] | 2 | #include <cstdlib> |
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| 3 | #include <cmath> |
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| 4 | #include <iostream> |
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| 5 | #include <cassert> |
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| 6 | #include "tree.hpp" |
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| 7 | #include "elt.hpp" |
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| 8 | #include "intersect.hpp" |
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| 9 | #include <vector> |
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| 10 | #include <set> |
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| 11 | #include <algorithm> |
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| 12 | |
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| 13 | #include "node.hpp" |
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| 14 | |
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| 15 | namespace sphereRemap { |
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| 16 | |
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| 17 | |
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| 18 | #define UPDATE_EVERY 1 |
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| 19 | |
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| 20 | using namespace std; |
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| 21 | |
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| 22 | //#ifdef DEBUG |
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| 23 | //std::map<void*, struct mem_info> _mem_deb; // reference counter |
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| 24 | // |
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| 25 | //void NodePtr::unlink() |
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| 26 | //{ |
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| 27 | // _mem_deb[ptr].ref_cnt -= 1; |
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| 28 | // if (_mem_deb[ptr].ref_cnt == 0) // we were last reference |
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| 29 | // { |
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| 30 | // if (_mem_deb[ptr].stat == DELETED) // delete has already been called, everything is fine, free memory now |
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| 31 | // { |
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| 32 | // _mem_deb.erase(ptr); |
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| 33 | // ::delete [] ((char *) ptr); |
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| 34 | // } |
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| 35 | // else // no more pointer, but memory not freed -> memory leak !! |
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| 36 | // { |
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| 37 | // std::cerr << "WARNING: Memory leak created at address " << ptr << "."; |
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| 38 | // assert(_mem_deb[ptr].stat == ALLOCATED); // and not BORROWED |
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| 39 | //#ifdef AUTO_LEAK_FIX |
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| 40 | // // free automatically, just for fun |
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| 41 | // _mem_deb.erase(ptr); |
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| 42 | // ptr->~Node(); // call destructor, since `Node::delete` has not been applied it has not been called |
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| 43 | // ::delete [] ((char *) ptr); |
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| 44 | // std::cerr << " LEAK FIXED."; |
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| 45 | //#endif |
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| 46 | // |
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| 47 | // std::cerr << std::endl; |
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| 48 | // } |
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| 49 | // } |
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| 50 | //} |
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| 51 | // |
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| 52 | //void memory_report() |
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| 53 | //{ |
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| 54 | // for (std::map<void*, struct mem_info>::iterator it = _mem_deb.begin(); it != _mem_deb.end(); it++) |
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| 55 | // { |
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| 56 | // if (it->second.stat == BORROWED) continue; |
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| 57 | // std::cerr << "Node at " << it->first << " has " << it->second.ref_cnt << " references to it and " |
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| 58 | // << ((it->second.stat == DELETED) ? "has" : "has *not*") << " been deleted." << std::endl; |
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| 59 | //#ifdef AUTO_LEAK_FIX |
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| 60 | // if (it->second.stat == ALLOCATED) // `Node::delete` has not been called |
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| 61 | // ((Node *) it->first)->~Node(); |
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| 62 | // delete [] ((char *) it->first); |
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| 63 | //#endif |
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| 64 | // } |
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| 65 | //} |
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| 66 | // |
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| 67 | //int ref_cnt(void *ptr) |
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| 68 | //{ |
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| 69 | // return _mem_deb[ptr].ref_cnt; |
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| 70 | //} |
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| 71 | //#endif |
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| 72 | |
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| 73 | int compareDist(NodePtr n1, NodePtr n2) |
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| 74 | { |
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| 75 | return squaredist(n1->tree->ref->centre, n1->centre) |
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| 76 | < squaredist(n2->tree->ref->centre, n2->centre); |
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| 77 | } |
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| 78 | |
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| 79 | /* On level `level` find the node in our subtree that is closest to `src` and return through argument `closest`. |
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| 80 | The return value is just for recursive calling */ |
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| 81 | void Node::findClosest(int level, NodePtr src, double& minDist2, NodePtr &closest) |
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| 82 | { |
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| 83 | double r2; |
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| 84 | |
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| 85 | r2 = squaredist(src->centre, this->centre); |
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| 86 | if (level == this->level) |
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| 87 | { |
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| 88 | if (r2 < minDist2 || closest == NULL) |
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| 89 | { |
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| 90 | minDist2 = r2; |
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| 91 | closest = this; |
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| 92 | } |
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| 93 | } |
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| 94 | else if (r2 < radius*radius) |
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| 95 | { |
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| 96 | for(int i = 0; i < child.size(); i++) |
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| 97 | child[i]->findClosest(level, src, minDist2, closest); |
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| 98 | } |
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| 99 | } |
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| 100 | |
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| 101 | NodePtr Node::farthest(vector<NodePtr >& list) |
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| 102 | { |
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| 103 | assert(this); |
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| 104 | double dmax = -HUGE_VAL; |
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| 105 | NodePtr node = NULL; |
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| 106 | for (size_t i=0; i < list.size(); i++) |
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| 107 | { |
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| 108 | double d = ds(this->centre, list[i]->centre); |
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| 109 | if (d > dmax) { |
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| 110 | node = list[i]; |
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| 111 | dmax = d; |
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| 112 | } |
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| 113 | } |
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| 114 | return node; |
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| 115 | } |
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| 116 | |
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| 117 | /* returns element in `list` cosest to us (`this`) by meassure `ds`. |
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| 118 | If `n` is negative finds element furthest away instead. */ |
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| 119 | NodePtr Node::closest(vector<NodePtr >& list, int n) |
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| 120 | { |
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| 121 | assert(this); |
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| 122 | double dmin2 = (n>0) ? HUGE_VAL : -HUGE_VAL; |
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| 123 | NodePtr node = NULL; |
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| 124 | for (int i = 0; i < list.size(); i++) |
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| 125 | { |
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| 126 | double d2 = squaredist(this->centre, list[i]->centre); |
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| 127 | if (n * (d2 - dmin2) < 0) |
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| 128 | { |
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| 129 | node = list[i]; |
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| 130 | dmin2 = d2; |
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| 131 | } |
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| 132 | } |
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| 133 | return node; |
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| 134 | } |
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| 135 | |
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| 136 | // make sure we will be able to accomodate `node` |
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| 137 | void Node::move(const NodePtr node) // this->leafCount may be 0 |
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| 138 | { |
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| 139 | double w = double(node->leafCount)/double(node->leafCount + this->leafCount); |
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| 140 | Coord oldCentre = this->centre; |
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| 141 | this->centre = proj(this->centre * (1-w) + node->centre * w); |
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| 142 | this->leafCount += node->leafCount; |
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| 143 | this->radius += arcdist(oldCentre, this->centre) + 1e-9; |
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| 144 | } |
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| 145 | |
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| 146 | void Node::remove(const NodePtr node) |
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| 147 | { |
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| 148 | if (&node == NULL) return; |
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| 149 | double w = double(node->leafCount) / this->leafCount; |
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| 150 | Coord newCentre = proj(this->centre - node->centre * w); |
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| 151 | this->leafCount -= node->leafCount; |
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| 152 | this->radius += arcdist(newCentre, this->centre) + 1e-9; |
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| 153 | this->centre = newCentre; |
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| 154 | this->updateCount++; |
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| 155 | } |
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| 156 | |
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| 157 | void Node::inflate(const NodePtr node) |
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| 158 | { |
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| 159 | double d = arcdist(this->centre, node->centre); |
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| 160 | double r = node->radius; |
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| 161 | if (this->radius < d + r) |
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| 162 | this->radius = d + r + 1e-9; |
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| 163 | } |
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| 164 | |
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| 165 | /* recomputes the radius which currently might be much larger than necessary */ |
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| 166 | void Node::update() |
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| 167 | { |
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| 168 | Coord centre = ORIGIN; |
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| 169 | int n = 0; |
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| 170 | for (int i = 0; i < this->child.size(); i++) { |
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| 171 | centre = centre + this->child[i]->centre * this->child[i]->leafCount; |
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| 172 | n += this->child[i]->leafCount; |
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| 173 | } |
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| 174 | this->centre = proj(centre); |
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| 175 | this->leafCount = n; |
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| 176 | |
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| 177 | double R = 0; |
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| 178 | for (int i = 0; i < this->child.size(); i++) |
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| 179 | { |
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| 180 | double d = arcdist(this->centre, this->child[i]->centre); |
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| 181 | double r = this->child[i]->radius; |
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| 182 | if (R < d + r) R = d + r; |
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| 183 | } |
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| 184 | this->radius = R + 1e-9; |
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| 185 | this->updateCount = 0; |
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| 186 | if (child.size()) |
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| 187 | level = child[0]->level + 1; |
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| 188 | } |
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| 189 | |
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| 190 | void Node::output(ostream& flux, int level, int color) |
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| 191 | { |
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| 192 | if (level==this->level) |
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| 193 | { |
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| 194 | flux<<centre.x<<" , "<<centre.y<<" , "<<centre.z<<" , "<<radius<<endl ; |
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| 195 | } |
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| 196 | else |
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| 197 | { |
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| 198 | for (int i = 0; i < this->child.size(); i++) child[i]->output(flux,level,color) ; |
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| 199 | } |
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| 200 | } |
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| 201 | |
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| 202 | |
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| 203 | /* void Node::append(NodePtr node); |
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| 204 | { |
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| 205 | if (node->level == this->level -1) |
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| 206 | { |
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| 207 | // new node is one level lower (correct level) |
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| 208 | this->child.append(node); |
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| 209 | node->parent = this; |
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| 210 | } |
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| 211 | else if (node->level < this->level -1) |
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| 212 | { |
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| 213 | // if new node is on even lower level, recursively append to closest child |
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| 214 | node->closest(this->child)->append(node); |
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| 215 | } |
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| 216 | else |
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| 217 | { |
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| 218 | cerr << "Error: Attempted node insertion with invalid level." << endl; |
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| 219 | exit(1); |
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| 220 | } |
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| 221 | }*/ |
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| 222 | |
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| 223 | bool find_in_tree1(Node* node) |
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| 224 | { |
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| 225 | if (node == node->tree->root) return true; |
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| 226 | if (node->parent == NULL) |
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| 227 | { |
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| 228 | cerr << "Cannot find!" << endl; |
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| 229 | return false; |
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| 230 | } |
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| 231 | return find_in_tree1(node->parent); |
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| 232 | } |
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| 233 | |
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| 234 | bool find_in_tree2(NodePtr node, NodePtr ref) |
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| 235 | { |
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| 236 | for (int i = 0; i < ref->child.size(); i++) |
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| 237 | { |
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| 238 | if (node == ref->child[i]) |
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| 239 | { |
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| 240 | cerr << "find2: " << ref << " -> " << ref->child[i] << endl; |
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| 241 | return true; |
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| 242 | } |
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| 243 | else if (find_in_tree2(node, ref->child[i])) |
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| 244 | { |
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| 245 | cerr << "find2: " << ref << " -> " << ref->child[i] << endl; |
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| 246 | return true; |
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| 247 | } |
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| 248 | } |
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| 249 | return false; |
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| 250 | } |
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| 251 | |
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| 252 | |
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| 253 | /* This appends `this` to the node `node` */ |
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| 254 | NodePtr insert(NodePtr thIs, NodePtr node) |
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| 255 | { |
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| 256 | int la = thIs->level; // node to be inserted |
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| 257 | int lb = node->level; // node where insertation |
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| 258 | assert(la < lb); // node to be inserted must have lower level then parent |
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| 259 | //if (thIs->parent) assert(find_in_tree1(thIs) == true); |
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| 260 | NodePtr q = NULL; |
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| 261 | NodePtr chd = NULL; |
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| 262 | node->move(thIs); |
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| 263 | if (la == lb - 1) |
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| 264 | { |
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| 265 | node->child.push_back(thIs); |
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| 266 | thIs->parent = node; |
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| 267 | if (node->child.size() > MAX_NODE_SZ) // with us as additional child `node` is now too large :( |
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| 268 | return (node->reinserted || node->parent == NULL) ? |
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| 269 | split(node) : reinsert(node); |
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| 270 | } |
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| 271 | else // la < lb - 1 |
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| 272 | { |
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| 273 | chd = thIs->closest(node->child); |
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| 274 | q = insert(thIs, chd); |
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| 275 | } |
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| 276 | if ((node->updateCount + 1) % UPDATE_EVERY == 0) |
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| 277 | node->update(); |
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| 278 | else |
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| 279 | { |
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| 280 | if (q) node->remove(q); |
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| 281 | node->inflate(chd); |
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| 282 | } |
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| 283 | return q; |
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| 284 | } |
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| 285 | |
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| 286 | typedef NodePtr pNode; |
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| 287 | |
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| 288 | /* move `frac` of our children to a new node which is returned */ |
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| 289 | NodePtr reinsert(NodePtr thIs) |
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| 290 | { |
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| 291 | thIs->tree->ref = thIs; |
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| 292 | std::sort(thIs->child.begin(), thIs->child.end(), compareDist); |
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| 293 | int out = (int) (frac*thIs->child.size()); |
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| 294 | |
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| 295 | /* make sure out is only so big that there are still MIN_NODE_SZ children after removing out */ |
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| 296 | if (thIs->child.size() - out < MIN_NODE_SZ) out = thIs->child.size() - MIN_NODE_SZ; |
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| 297 | |
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| 298 | /* transfere out children from us to a new node q which will be returned */ |
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| 299 | NodePtr q = new Node; |
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| 300 | q->tree = thIs->tree; |
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| 301 | q->child.resize(out); |
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| 302 | for (int i = thIs->child.size() - out; i < thIs->child.size(); i++) |
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| 303 | { |
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| 304 | thIs->tree->push_back(thIs->child[i]); |
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| 305 | int k = i - (thIs->child.size() - out); |
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| 306 | q->child[k] = thIs->child[i]; |
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| 307 | q->child[k]->parent = q; |
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| 308 | } |
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| 309 | thIs->child.resize(thIs->child.size() - out); |
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| 310 | thIs->update(); |
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| 311 | q->update(); |
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| 312 | thIs->reinserted = true; // avoid infinite loop of reinserting the same node, by marking it as reinserted and stop if same node arrives at same place again |
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| 313 | thIs->tree->ri = 1; |
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| 314 | return q; |
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| 315 | } |
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| 316 | |
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| 317 | /* move around nodes that are far away from the centre of their parents in order reduce radia of the circles |
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| 318 | leading to faster look-up times because of less redundancies between nodes. |
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| 319 | TODO cite paper for Slim SS-tree */ |
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| 320 | void slim2(NodePtr thIs, int level) |
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| 321 | { |
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| 322 | bool out; |
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| 323 | double distChild; |
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| 324 | |
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| 325 | #ifdef DEBUG |
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| 326 | // assert(ref_cnt(thIs) >= thIs->child.size() + 1 /*parent*/ + 1 /*thIs*/); |
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| 327 | #endif |
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| 328 | if (thIs->level==level) |
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| 329 | { |
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| 330 | out = false; |
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| 331 | while (!out) |
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| 332 | { |
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| 333 | /* remove child which is farthest away from the centre and try to reinsert it into the tree */ |
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| 334 | double distMax = 0; |
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| 335 | int itMax = -1; |
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| 336 | for (int i = 0; i < thIs->child.size(); i++) |
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| 337 | { |
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| 338 | distChild = arcdist(thIs->centre, thIs->child[i]->centre) + thIs->child[i]->radius; |
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| 339 | if (distChild > distMax) |
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| 340 | { |
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| 341 | distMax = distChild; |
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| 342 | itMax = i; |
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| 343 | } |
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| 344 | } |
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| 345 | if (transferNode(thIs->tree->root, thIs, thIs->child[itMax])) |
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| 346 | { |
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| 347 | thIs->child.erase(thIs->child.begin()+itMax); |
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| 348 | out = false; |
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| 349 | } |
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| 350 | else |
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| 351 | out = true; |
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| 352 | |
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| 353 | if (thIs->child.size() < MIN_NODE_SZ) out = true; |
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| 354 | } |
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| 355 | |
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| 356 | if (thIs->child.size() < MIN_NODE_SZ && thIs->level < thIs->tree->root->level) |
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| 357 | { |
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| 358 | thIs->tree->decreaseLevelSize(thIs->level); |
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| 359 | for(int i = 0; i < thIs->child.size(); i++) |
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| 360 | thIs->tree->push_back(thIs->child[i]); |
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| 361 | thIs->child.resize(0); |
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| 362 | } |
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| 363 | else thIs->update(); |
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| 364 | } |
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| 365 | else |
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| 366 | { |
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| 367 | int newChildCount = 0; |
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| 368 | for (int i = 0; i < thIs->child.size(); i++) |
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| 369 | { |
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| 370 | if (thIs == thIs->tree->root) |
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| 371 | { |
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| 372 | // keep at least one child for root |
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| 373 | if (i == thIs->child.size()-1 && newChildCount == 0) |
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| 374 | { |
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| 375 | thIs->child[newChildCount] = thIs->child[i]; |
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| 376 | newChildCount++; |
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| 377 | break; |
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| 378 | } |
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| 379 | } |
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| 380 | |
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| 381 | slim2(thIs->child[i], level); |
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| 382 | if (thIs->child[i]->child.size() != 0) // thIs->child[i] is not a leaf |
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| 383 | { |
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| 384 | thIs->child[newChildCount] = thIs->child[i]; |
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| 385 | newChildCount++; |
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| 386 | } /* else FIXME sometimes this child must be deleted (otherwise leak) sometimes not (otherwise segfault) |
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| 387 | maybe delete not here but when transfered |
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| 388 | delete thIs->child[i]; // if our child does not make any grand-children what good is it? -> remove! |
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| 389 | */ |
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| 390 | |
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| 391 | } |
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| 392 | thIs->child.resize(newChildCount); |
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| 393 | |
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| 394 | if (thIs->child.size() < MIN_NODE_SZ && thIs->level < thIs->tree->root->level) |
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| 395 | { |
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| 396 | thIs->tree->decreaseLevelSize(thIs->level); |
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| 397 | for (int i = 0; i < thIs->child.size(); i++) |
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| 398 | thIs->tree->push_front(thIs->child[i]); |
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| 399 | thIs->child.resize(0); |
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| 400 | } |
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| 401 | else thIs->update(); |
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| 402 | } |
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| 403 | } |
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| 404 | |
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| 405 | bool transferNode(NodePtr thIs, NodePtr parent, NodePtr node) |
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| 406 | { |
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| 407 | if (parent == thIs) return false; |
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| 408 | |
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| 409 | if (thIs->level == parent->level) |
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| 410 | { |
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| 411 | if (thIs->child.size() < MAX_NODE_SZ && thIs->child.size() >= MIN_NODE_SZ) |
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| 412 | { |
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| 413 | insert(node, thIs); |
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| 414 | return true; |
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| 415 | } |
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| 416 | else |
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| 417 | return false; |
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| 418 | } |
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| 419 | else |
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| 420 | { |
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| 421 | for (int i = 0; i < thIs->child.size(); i++) |
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| 422 | { |
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| 423 | if (arcdist(thIs->child[i]->centre, node->centre) + node->radius < thIs->child[i]->radius) |
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| 424 | { |
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| 425 | if (transferNode(thIs->child[i], parent, node)) |
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| 426 | { |
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| 427 | thIs->update(); |
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| 428 | return true; |
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| 429 | } |
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| 430 | } |
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| 431 | } |
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| 432 | return false; |
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| 433 | } |
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| 434 | } |
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| 435 | |
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| 436 | |
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| 437 | |
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| 438 | NodePtr split(NodePtr thIs) |
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| 439 | { |
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| 440 | thIs->tree->increaseLevelSize(thIs->level); |
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| 441 | NodePtr p = new Node; |
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| 442 | NodePtr q = new Node; |
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| 443 | p->level = q->level = thIs->level; |
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| 444 | p->reinserted = q->reinserted = false; |
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| 445 | p->parent = q->parent = thIs->parent; |
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| 446 | p->tree = q->tree = thIs->tree; |
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| 447 | |
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| 448 | |
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| 449 | p->child.resize(MAX_NODE_SZ/2); |
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| 450 | q->child.resize(MAX_NODE_SZ/2 + 1); |
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| 451 | assert(thIs->child.size() == MAX_NODE_SZ+1); |
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| 452 | thIs->tree->ref = q->child[0] = thIs->closest(thIs->child, FARTHEST); // farthest from centre |
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| 453 | std::sort(thIs->child.begin(), thIs->child.end(), compareDist); |
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| 454 | for (int i = 1; i < MAX_NODE_SZ+1; i++) |
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| 455 | assert(thIs->child[i]->parent == thIs); |
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| 456 | for (int i = 1; i < MAX_NODE_SZ/2 + 1; i++) |
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| 457 | q->child[i] = thIs->child[i]; |
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| 458 | for (int i = MAX_NODE_SZ/2+1; i<MAX_NODE_SZ+1; i++) |
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| 459 | p->child[i-MAX_NODE_SZ/2-1] = thIs->child[i]; |
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| 460 | for (int i = 0; i < MAX_NODE_SZ/2 + 1; i++) |
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| 461 | q->child[i]->parent = q; |
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| 462 | for (int i = MAX_NODE_SZ/2+1; i < MAX_NODE_SZ+1; i++) |
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| 463 | p->child[i-MAX_NODE_SZ/2-1]->parent = p; |
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| 464 | p->update(); |
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| 465 | q->update(); |
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| 466 | |
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| 467 | if (squaredist(thIs->centre, q->centre) < squaredist(thIs->centre, p->centre)) |
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| 468 | swap(p, q); |
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| 469 | |
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| 470 | thIs->child = p->child; // now our children do not know we are their parents and believe p is their parent |
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| 471 | for (int i = 0; i < thIs->child.size(); i++) |
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| 472 | thIs->child[i]->parent = thIs; |
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| 473 | thIs->reinserted = p->reinserted; |
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| 474 | thIs->update(); |
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| 475 | delete p; |
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| 476 | |
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| 477 | if (thIs == thIs->tree->root) // root split |
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| 478 | { |
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| 479 | // since we currently are root, make new root and make us and q its children |
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| 480 | thIs->tree->newRoot(thIs->level + 1); |
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| 481 | thIs->tree->root->child.push_back(thIs); thIs->parent = thIs->tree->root; |
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| 482 | thIs->tree->root->child.push_back(q); q->parent = thIs->tree->root; |
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| 483 | thIs->tree->root->update(); |
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| 484 | } |
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| 485 | else |
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| 486 | { |
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| 487 | thIs->tree->push_front(q); |
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| 488 | } // push_front? |
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| 489 | return q; |
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| 490 | } |
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| 491 | |
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| 492 | /* Assuming we are a leaf push all leafs into our list of intersectors |
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| 493 | that are descendant of node and whoes circle intersects ours. |
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| 494 | */ |
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| 495 | void Node::search(NodePtr node) |
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| 496 | { |
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| 497 | assert(this->level == 0); |
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| 498 | int Nchild = node->child.size(); |
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| 499 | if (this->intersects(node)) { |
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| 500 | if (node->level == 0) |
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| 501 | this->intersectors.push_back(node); |
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| 502 | else |
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| 503 | for (int i=0; i<Nchild; i++) |
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| 504 | search(node->child[i]); |
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| 505 | } |
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| 506 | } |
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| 507 | |
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| 508 | /* FIXME this should not be in node.cpp and getNeighbours should not be part of the SS-tree |
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| 509 | this is mapper specific */ |
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| 510 | void findNeighbour(NodePtr thIs, NodePtr node, set<NodePtr >& neighbourList) |
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| 511 | { |
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| 512 | if (thIs->level==0) |
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| 513 | { |
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| 514 | Elt* elt1= (Elt*)(thIs->data); |
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| 515 | Elt* elt2= (Elt*)(node->data); |
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| 516 | if (isNeighbour(*elt1, *elt2)) neighbourList.insert(thIs); |
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| 517 | } |
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| 518 | else |
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| 519 | { |
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| 520 | for(int i=0; i<thIs->child.size(); i++) |
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| 521 | if (thIs->child[i]->intersects(node)) findNeighbour(thIs->child[i], node, neighbourList); |
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| 522 | } |
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| 523 | } |
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| 524 | |
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| 525 | bool Node::intersects(NodePtr node) |
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| 526 | { |
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| 527 | double d = arcdist(this->centre, node->centre); |
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| 528 | double r = this->radius; |
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| 529 | double R = node->radius; |
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| 530 | return (d < r + R + 1e-9) ? true : false; |
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| 531 | } |
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| 532 | |
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| 533 | bool Node::centreInside(Node &node) |
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| 534 | { |
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| 535 | double d = arcdist(this->centre, node.centre); |
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| 536 | double R = node.radius; |
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| 537 | return (d < R + 1e-9) ? true : false; |
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| 538 | } |
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| 539 | |
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| 540 | bool Node::isInside(Node &node) |
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| 541 | { |
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| 542 | double d = arcdist(this->centre, node.centre); |
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| 543 | double r = this->radius; |
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| 544 | double R = node.radius; |
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| 545 | return (d + r < R + 1e-9) ? true : false; |
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| 546 | } |
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| 547 | |
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| 548 | int Node::incluCheck() |
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| 549 | { |
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| 550 | if (this->level == 0) return 0; |
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| 551 | int nOutside = 0; |
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| 552 | int n = this->child.size(); // cout << "n = " << n << endl; |
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| 553 | for (int i=0; i<n; i++) |
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| 554 | { |
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| 555 | if (!this->child[i]->isInside(*this)) |
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| 556 | { |
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| 557 | cout << "Node of level " << this->level << " does not contain its " |
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| 558 | << i << "th child\n"; |
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| 559 | nOutside++; |
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| 560 | } |
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| 561 | nOutside += this->child[i]->incluCheck(); |
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| 562 | } |
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| 563 | return nOutside; |
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| 564 | } |
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| 565 | |
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| 566 | void Node::printChildren() |
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| 567 | { |
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| 568 | cout << "level " << this->level << ", centre "; |
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| 569 | cout << "level " << this->level << ", centre " << this->centre << "\t r = " << this->radius << endl; |
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| 570 | cout << this << " p: " << this->parent << endl; |
---|
| 571 | int n = this->child.size(); |
---|
| 572 | for (int i=0; i<n; i++) |
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| 573 | { |
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| 574 | NodePtr child = this->child[i]; |
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| 575 | cout << "fils " << i << ": centre " << child->centre << "\t r = " << child->radius << endl; |
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| 576 | cout << "dist to center " << arcdist(this->centre, child->centre) << |
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| 577 | " d + R = " << arcdist(this->centre,child->centre)+child->radius << endl; |
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| 578 | } |
---|
| 579 | } |
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| 580 | |
---|
| 581 | void Node::assignRoute(std::vector<int>::iterator& rank, int level) |
---|
| 582 | { |
---|
| 583 | if (this->level==level) |
---|
| 584 | { |
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| 585 | route = *rank; |
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| 586 | rank++; |
---|
| 587 | } |
---|
| 588 | else |
---|
| 589 | { |
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| 590 | for (int i = 0; i < child.size(); i++) |
---|
| 591 | child[i]->assignRoute(rank, level); |
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| 592 | } |
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| 593 | } |
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| 594 | |
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| 595 | void Node::assignCircleAndPropagateUp(Coord *centres, double *radia, int level) |
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| 596 | { |
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| 597 | if (this->level == level) |
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| 598 | { |
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| 599 | // assign |
---|
| 600 | centre = centres[route]; |
---|
| 601 | radius = radia[route]; |
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| 602 | free_descendants(); // levels of sample tree beyond `level` will not be used any more |
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| 603 | child.resize(0); |
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| 604 | this->level = 0; |
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| 605 | } |
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| 606 | else |
---|
| 607 | { |
---|
| 608 | for (int i = 0; i < child.size(); i++) |
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| 609 | child[i]->assignCircleAndPropagateUp(centres, radia, level); |
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| 610 | update(); // propagate up |
---|
| 611 | } |
---|
| 612 | } |
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| 613 | |
---|
| 614 | /* Route node `node` within the subtree attached to us. |
---|
| 615 | `level` is the level one which to assign |
---|
| 616 | */ |
---|
| 617 | // Each sample node has a rank randomly assigned to it, assign `node` from full tree |
---|
| 618 | void Node::routeNode(NodePtr node, int level) |
---|
| 619 | { |
---|
| 620 | NodePtr closest; |
---|
| 621 | |
---|
| 622 | double distMin2 = 0; // squared distance |
---|
| 623 | closest = NULL; |
---|
| 624 | if (tree->root == this) |
---|
| 625 | findClosest(level, node, distMin2, closest); |
---|
| 626 | |
---|
| 627 | if (closest != NULL && tree->root == this) |
---|
| 628 | /* When is this point reached? |
---|
| 629 | if the preceeding findClosest was called and succesed to set closest |
---|
| 630 | findClosest sets closest if we are `level` or src is in our circle (=> belongs to child of ours) |
---|
| 631 | => reached if we are not `level` and node is not child of us |
---|
| 632 | */ |
---|
| 633 | node->route = closest->route; |
---|
| 634 | else /* find closest was not successfull or we were not root */ |
---|
| 635 | { |
---|
| 636 | if (this->level == level) |
---|
| 637 | node->route = this->route; |
---|
| 638 | else /* not yet right level => go down one more */ |
---|
| 639 | node->closest(this->child)->routeNode(node, level); |
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| 640 | } |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | void Node::routeIntersection(vector<int>& routes, NodePtr node) |
---|
| 644 | { |
---|
| 645 | if (level == 0) |
---|
| 646 | { |
---|
| 647 | routes.push_back(this->route); |
---|
| 648 | } |
---|
| 649 | else |
---|
| 650 | { |
---|
| 651 | for (int i = 0; i < child.size(); i++) { |
---|
| 652 | if (child[i]->intersects(node)) |
---|
| 653 | child[i]->routeIntersection(routes, node); |
---|
| 654 | } |
---|
| 655 | } |
---|
| 656 | } |
---|
| 657 | |
---|
| 658 | void Node::routingIntersecting(vector<Node> *routingList, NodePtr node) |
---|
| 659 | { |
---|
| 660 | if (level==0) |
---|
| 661 | { |
---|
| 662 | int rank = route; |
---|
| 663 | routingList[rank].push_back(*node); |
---|
| 664 | } |
---|
| 665 | else |
---|
| 666 | { |
---|
| 667 | for (int i = 0; i < child.size(); i++) { |
---|
| 668 | if (child[i]->intersects(node)) |
---|
| 669 | child[i]->routingIntersecting(routingList, node); |
---|
| 670 | } |
---|
| 671 | } |
---|
| 672 | } |
---|
| 673 | |
---|
| 674 | void Node::free_descendants() |
---|
| 675 | { |
---|
| 676 | for (int i = 0; i < child.size(); i++) |
---|
| 677 | { |
---|
| 678 | child[i]->free_descendants(); |
---|
| 679 | if (child[i]->level) // do not attempt to delete leafs, they are delete through leafs vector |
---|
| 680 | delete child[i]; |
---|
| 681 | } |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | } |
---|