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Less flickery

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This commit is contained in:
DennisOSRM 2011-12-09 17:20:01 +01:00
parent 3767ffd79a
commit 8589436158
1 changed files with 27 additions and 14 deletions
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41
DataStructures/SearchEngine.h
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@ -75,7 +75,7 @@ public:
InitializeThreadLocalStorageIfNecessary();
NodeID middle = ( NodeID ) UINT_MAX;
bool stOnSameEdge = false;
/* bool stOnSameEdge = false;
//Handling the special case that origin and destination are on same edge and that the order is correct.
if(phantomNodes.PhantomsAreOnSameNodeBasedEdge()){
if(phantomNodes.startPhantom.isBidirected() && phantomNodes.targetPhantom.isBidirected()) {
@ -88,30 +88,34 @@ public:
stOnSameEdge = true;
}
}
*/
//insert start and/or target node of start edge
_forwardHeap->Insert(phantomNodes.startPhantom.edgeBasedNode, -phantomNodes.startPhantom.weight1, phantomNodes.startPhantom.edgeBasedNode);
// INFO("a) forw insert " << phantomNodes.startPhantom.edgeBasedNode << ", weight: " << -phantomNodes.startPhantom.weight1);
if(phantomNodes.startPhantom.isBidirected() ) {
// INFO("b) forw insert " << phantomNodes.startPhantom.edgeBasedNode+1 << ", weight: " << -phantomNodes.startPhantom.weight2);
_forwardHeap->Insert(phantomNodes.startPhantom.edgeBasedNode+1, -phantomNodes.startPhantom.weight2, phantomNodes.startPhantom.edgeBasedNode+1);
_forwardHeap->Insert(phantomNodes.startPhantom.edgeBasedNode+1, -phantomNodes.startPhantom.weight2, phantomNodes.startPhantom.edgeBasedNode+1);
}
//insert start and/or target node of target edge id
_backwardHeap->Insert(phantomNodes.targetPhantom.edgeBasedNode, -phantomNodes.targetPhantom.weight2, phantomNodes.targetPhantom.edgeBasedNode);
// INFO("c) back insert " << phantomNodes.targetPhantom.edgeBasedNode << ", weight: " << -phantomNodes.targetPhantom.weight2);
_backwardHeap->Insert(phantomNodes.targetPhantom.edgeBasedNode, phantomNodes.targetPhantom.weight1, phantomNodes.targetPhantom.edgeBasedNode);
// INFO("c) back insert " << phantomNodes.targetPhantom.edgeBasedNode << ", weight: " << phantomNodes.targetPhantom.weight1);
if(phantomNodes.targetPhantom.isBidirected() ) {
_backwardHeap->Insert(phantomNodes.targetPhantom.edgeBasedNode+1, -phantomNodes.targetPhantom.weight1, phantomNodes.targetPhantom.edgeBasedNode+1);
// INFO("d) back insert " << phantomNodes.targetPhantom.edgeBasedNode+1 << ", weight: " << -phantomNodes.targetPhantom.weight1);
}
_backwardHeap->Insert(phantomNodes.targetPhantom.edgeBasedNode+1, phantomNodes.targetPhantom.weight2, phantomNodes.targetPhantom.edgeBasedNode+1);
// INFO("d) back insert " << phantomNodes.targetPhantom.edgeBasedNode+1 << ", weight: " << phantomNodes.targetPhantom.weight2);
}
int startOffset = (phantomNodes.startPhantom.isBidirected() ? std::max(phantomNodes.startPhantom.weight1, phantomNodes.startPhantom.weight2) : phantomNodes.startPhantom.weight1) ;
int targetOffset = 0;//(phantomNodes.targetPhantom.isBidirected() ? std::max(phantomNodes.targetPhantom.weight1, phantomNodes.targetPhantom.weight2) : phantomNodes.targetPhantom.weight1) ;
while(_forwardHeap->Size() + _backwardHeap->Size() > 0){
if(_forwardHeap->Size() > 0){
_RoutingStep(_forwardHeap, _backwardHeap, true, &middle, &_upperbound, stOnSameEdge);
_RoutingStep(_forwardHeap, _backwardHeap, true, &middle, &_upperbound, startOffset);
}
if(_backwardHeap->Size() > 0){
_RoutingStep(_backwardHeap, _forwardHeap, false, &middle, &_upperbound, stOnSameEdge);
_RoutingStep(_backwardHeap, _forwardHeap, false, &middle, &_upperbound, targetOffset);
}
}
// INFO("-> dist " << _upperbound);
if ( _upperbound == INT_MAX ) {
return _upperbound;
}
@ -168,18 +172,25 @@ public:
return GetEscapedNameForNameID(nameID);
}
private:
inline void _RoutingStep(HeapPtr & _forwardHeap, HeapPtr & _backwardHeap, const bool & forwardDirection, NodeID *middle, int *_upperbound, const bool stOnSameEdge) const {
inline void _RoutingStep(HeapPtr & _forwardHeap, HeapPtr & _backwardHeap, const bool & forwardDirection, NodeID *middle, int *_upperbound, const int negativeOffset) const {
const NodeID node = _forwardHeap->DeleteMin();
const int distance = _forwardHeap->GetKey(node);
if(_backwardHeap->WasInserted(node) && (!stOnSameEdge || distance > 0) ){
// INFO((forwardDirection ? "[forw]" : "[back]") << " settled node " << node << " at distance " << distance);
if(_backwardHeap->WasInserted(node) ){
// INFO((forwardDirection ? "[forw]" : "[back]") << " scanned node " << node << " in both directions");
const int newDistance = _backwardHeap->GetKey(node) + distance;
if(newDistance < *_upperbound){
if(newDistance < *_upperbound ){
if(newDistance>=0 ) {
// INFO((forwardDirection ? "[forw]" : "[back]") << " settled node " << node << " is new middle at total distance " << newDistance);
*middle = node;
*_upperbound = newDistance;
// } else {
// INFO((forwardDirection ? "[forw]" : "[back]") << " ignored " << node << " as new middle at total distance " << newDistance);
}
}
}
if(distance > *_upperbound){
if(distance-negativeOffset > *_upperbound){
_forwardHeap->DeleteAll();
return;
}
@ -215,10 +226,12 @@ private:
//New Node discovered -> Add to Heap + Node Info Storage
if ( !_forwardHeap->WasInserted( to ) ) {
// INFO((forwardDirection ? "[forw]" : "[back]") << " scanning edge (" << node << "," << to << ") with distance " << toDistance << ", edge length: " << data.distance);
_forwardHeap->Insert( to, toDistance, node );
}
//Found a shorter Path -> Update distance
else if ( toDistance < _forwardHeap->GetKey( to ) ) {
// INFO((forwardDirection ? "[forw]" : "[back]") << " decrease and scanning edge (" << node << "," << to << ") with distance " << toDistance << ", edge length: " << data.distance);
_forwardHeap->GetData( to ).parent = node;
_forwardHeap->DecreaseKey( to, toDistance );
//new parent