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784 lines
18 KiB
C++
784 lines
18 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "stdligo.h"
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#include "zone_template.h"
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#include "ligo_error.h"
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#include "nel/ligo/ligo_config.h"
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#include "nel/misc/stream.h"
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#include "nel/misc/matrix.h"
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using namespace std;
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using namespace NLMISC;
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namespace NLLIGO
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{
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const uint SnappedXFlag = 1;
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const uint SnappedYFlag = 2;
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// ***************************************************************************
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inline void CZoneTemplate::snap (float& value, float snap)
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{
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// Snap it
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value = snap * (float) floor ( (value / snap) + 0.5f );
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}
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// ***************************************************************************
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inline bool CZoneTemplate::snapOnGrid (float& value, float resolution, float snap)
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{
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// Calc the floor
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float _floor = (float) ( resolution * floor (value / resolution) );
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nlassert (_floor<=value);
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// Calc the remainder
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float remainder = value - _floor;
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//nlassert ( (remainder>=0) && (remainder<resolution) );
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// Check the snape
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if ( remainder <= snap )
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{
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// Flag it
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value = _floor;
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// Floor is good
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return true;
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}
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else if ( (resolution - remainder) <= snap )
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{
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// Flag it
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value = _floor + resolution;
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// Floor + resolution is good
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return true;
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}
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return false;
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}
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// ***************************************************************************
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inline bool CZoneTemplate::isSnapedOnGrid (float value, float resolution, float snap)
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{
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// Snapped
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float snapped = value;
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return snapOnGrid (snapped, resolution, snap);
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}
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// ***************************************************************************
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inline sint32 CZoneTemplate::getSnappedIndex (float value, float resolution, float snap)
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{
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// Snapped
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float snapped = value;
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// This value must be snapped
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nlverify (snapOnGrid (snapped, resolution, snap));
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// Return the index
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return (sint32) floor ( (snapped / resolution) + 0.5f );
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}
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// ***************************************************************************
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bool CZoneTemplate::build (const std::vector<NLMISC::CVector> &vertices, const std::vector< std::pair<uint, uint> > &indexes, const CLigoConfig &config, CLigoError &errors)
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{
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// Clear the error message
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errors.clear ();
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// Make an boundary flag array
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vector<uint> boundaryFlags;
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// Vertices count
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uint vertexCount = (uint)vertices.size();
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// Resize the array
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boundaryFlags.resize (vertexCount, 0);
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// *** Build the flag array and the snapped vertex array
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// For each vertices
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uint vertex;
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for (vertex = 0; vertex < vertexCount; vertex++)
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{
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// Snap the point on the X grid
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if (isSnapedOnGrid (vertices[vertex].x, config.CellSize, config.Snap))
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// Flag on X
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boundaryFlags[vertex]|=SnappedXFlag;
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// Snap the point on the Y grid
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if (isSnapedOnGrid (vertices[vertex].y, config.CellSize, config.Snap))
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// Flag on Y
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boundaryFlags[vertex]|=SnappedYFlag;
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}
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// *** Build the edge set
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multimap<uint, uint> edgePair;
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multimap<uint, uint> edgePairReverse;
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// Index count
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uint edgeCount = (uint)indexes.size();
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// For each vertices
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uint edge;
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for (edge = 0; edge < edgeCount; edge++)
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{
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// Ref on the pair
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const pair<uint, uint> &theEdge = indexes[edge];
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// Vertex snapped ?
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if ( boundaryFlags[theEdge.first] && boundaryFlags[theEdge.second] )
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{
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// Common coordinates
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uint common = boundaryFlags[theEdge.first] & boundaryFlags[theEdge.second];
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// Snapped on the same kind of coordinates ?
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if ( common )
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{
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// Keep this edge ?
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bool keep = false;
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// Snapped both on X ?
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if ( common & SnappedXFlag )
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{
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// Keep it
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keep = true;
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}
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// Snapped both on X ?
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if ( common & SnappedYFlag )
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{
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// Keep it
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keep = true;
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}
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// Keep this edge ?
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if (keep)
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{
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// Already inserted ?
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bool first = edgePair.find (theEdge.first) != edgePair.end();
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bool second = edgePairReverse.find (theEdge.second) != edgePairReverse.end();
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// First already inserted
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if (first || second)
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{
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// Error, two times the same vertex
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errors.MainError = CLigoError::VertexAlreadyUsed;
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if (first)
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errors.pushVertexError (CLigoError::VertexAlreadyUsed, theEdge.first, 0);
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if (second)
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errors.pushVertexError (CLigoError::VertexAlreadyUsed, theEdge.second, 0);
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return false;
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}
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if ((!first) && (!second))
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{
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// Add to the map
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edgePair.insert (map<uint, uint>::value_type(theEdge.first, theEdge.second));
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edgePairReverse.insert (map<uint, uint>::value_type(theEdge.second, theEdge.first));
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}
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}
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}
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}
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}
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// *** Build the list of non included vertices
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// For each vertices
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for (uint i=0; i<vertexCount; i++)
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{
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// Vertex is inserted ?
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if (edgePair.find (i) == edgePair.end())
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{
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// No, add an error message
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errors.pushVertexError (CLigoError::NotInserted, i, 0);
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}
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else
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{
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// No, add an error message
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errors.pushVertexError (CLigoError::Inserted, i, 0);
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}
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}
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// *** Build the linked list
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// No vertices found ?
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if (edgePair.begin() == edgePair.end())
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{
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// Error message
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errors.MainError = CLigoError::NoEdgeVertices;
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return false;
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}
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// Build the linked segments
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list<list<uint> > segmentList;
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multimap<uint, uint>::iterator currentVert = edgePair.begin();
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// For each remaining segment
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while (currentVert != edgePair.end())
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{
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// Get next vert
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uint first = currentVert->first;
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uint next = currentVert->second;
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// New list
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segmentList.push_front (list<uint>());
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list<uint> &listVert = *segmentList.begin();
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// Put the first vertices of the edge list
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listVert.push_back (first);
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listVert.push_back (next);
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// Erase it and
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edgePair.erase (currentVert);
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// Erase the reverse one
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currentVert = edgePairReverse.find (next);
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nlassert (currentVert != edgePairReverse.end());
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edgePairReverse.erase (currentVert);
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// Look forward
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currentVert = edgePair.find (next);
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while (currentVert != edgePair.end())
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{
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// Backup
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//uint current = currentVert->first;
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next = currentVert->second;
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// Push the next vertex
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listVert.push_back (next);
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// Erase it and
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edgePair.erase (currentVert);
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// Erase the reverse one
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currentVert = edgePairReverse.find (next);
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nlassert (currentVert != edgePairReverse.end());
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edgePairReverse.erase (currentVert);
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// Look forward
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currentVert = edgePair.find (next);
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}
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// Edgelist ok ?
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if (next != first)
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{
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// No, look backward
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currentVert = edgePairReverse.find (first);
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while (currentVert != edgePairReverse.end())
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{
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// Backup
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uint current = currentVert->second;
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next = currentVert->first;
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// Push the next vertex
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listVert.push_front (current);
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// Erase it
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edgePairReverse.erase (currentVert);
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// Erase the reverse one
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currentVert = edgePair.find (current);
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nlassert (currentVert != edgePair.end());
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edgePair.erase (currentVert);
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// Look forward
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currentVert = edgePairReverse.find (current);
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}
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}
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// Next edge list
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currentVert = edgePair.begin();
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}
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// ** Error traitment
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// Ok
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bool ok = true;
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// Edge index
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uint edgeIndex = 0;
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// List ok ?
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list<list<uint> >::iterator iteList = segmentList.begin ();
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while (iteList != segmentList.end())
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{
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// Only one list
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list<uint> &listVert = *iteList;
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// First and last edge
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uint first = *listVert.begin();
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uint last = *(--listVert.end());
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// Opened edge ?
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if ( first != last )
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{
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// Opened edge
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errors.pushVertexError (CLigoError::OpenedEdge, first, edgeIndex);
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errors.pushVertexError (CLigoError::OpenedEdge, last, edgeIndex);
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// Main error
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errors.MainError = CLigoError::OpenedEdge;
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// Not ko
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ok = false;
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}
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// Next edge list
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edgeIndex++;
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iteList++;
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}
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if (segmentList.size () > 1)
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{
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// Main error
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errors.MainError = CLigoError::MultipleEdge;
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// Not ok
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ok = false;
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}
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// Ok ?
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if (ok)
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{
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// Only one list
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list<uint> &listVert = *segmentList.begin ();
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// Test vertex enchainement
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list<uint>::iterator vertIte = listVert.begin();
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// Current vertex id
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uint previous = *(--listVert.end());
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vertIte++;
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// Error vertex set
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set<uint> errored;
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// For each vertices
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while (vertIte != listVert.end ())
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{
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// Vertex id
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uint next = *vertIte;
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// Common flags
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uint commonFlags = boundaryFlags[previous]&boundaryFlags[next];
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// The both on X ?
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if ( commonFlags & SnappedXFlag )
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{
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// Get x index
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sint32 prevIndex = getSnappedIndex (vertices[previous].x, config.CellSize, config.Snap);
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sint32 nextIndex = getSnappedIndex (vertices[next].x, config.CellSize, config.Snap);
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// Not the same ?
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if (prevIndex != nextIndex)
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{
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// Vertex list error
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if (errored.insert (previous).second)
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errors.pushVertexError (CLigoError::VertexList, previous, 0);
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if (errored.insert (next).second)
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errors.pushVertexError (CLigoError::VertexList, next, 0);
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// Main error
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errors.MainError = CLigoError::VertexList;
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}
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}
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// Next vertex
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previous = next;
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vertIte++;
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}
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// No error ?
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if (errored.empty())
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{
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// Only one list
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nlassert (segmentList.size()==1);
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// First of the list
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vertIte = listVert.begin();
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// Remove first
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listVert.erase (vertIte);
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// Find a corner
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list<uint>::iterator firstIte = listVert.begin();
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while (firstIte != listVert.end())
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{
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// Corner ?
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if ( (boundaryFlags[*firstIte] & (SnappedXFlag|SnappedYFlag)) == (SnappedXFlag|SnappedYFlag) )
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// Yes, exit
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break;
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// Next
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firstIte++;
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}
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// Can't be the last
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if (firstIte == listVert.end())
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{
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// No corner found
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errors.MainError = CLigoError::NoCornerFound;
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return false;
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}
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// First of the segment
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vertIte = firstIte;
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// Current edge list
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std::vector<uint32> edge;
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// Push the first
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edge.push_back (*vertIte);
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// Next
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vertIte++;
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// End ?
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if (vertIte == listVert.end())
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// Start
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vertIte = listVert.begin();
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// Edge index
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uint edgeIndex = 0;
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// Build the edges
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for(;;)
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{
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// Add it
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edge.push_back (*vertIte);
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// Corner ?
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if ( (boundaryFlags[*vertIte] & (SnappedXFlag|SnappedYFlag)) == (SnappedXFlag|SnappedYFlag) )
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{
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// Get the index of start and end of the edge
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sint32 startX = getSnappedIndex (vertices[edge[0]].x, config.CellSize, config.Snap);
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sint32 startY = getSnappedIndex (vertices[edge[0]].y, config.CellSize, config.Snap);
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sint32 endX = getSnappedIndex (vertices[edge[edge.size()-1]].x, config.CellSize, config.Snap);
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sint32 endY = getSnappedIndex (vertices[edge[edge.size()-1]].y, config.CellSize, config.Snap);
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// Same point ?
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if ((startX==endX) && (startY==endY))
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{
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// Error, two times the same vertex
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errors.MainError = CLigoError::TwoCornerVertices;
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errors.pushVertexError (CLigoError::TwoCornerVertices, edge[0], 0);
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errors.pushVertexError (CLigoError::TwoCornerVertices, edge[edge.size()-1], 0);
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return false;
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}
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// Same point ?
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if ((abs(startX-endX)>1) || (abs(startY-endY)>1))
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{
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// Error, two times the same vertex
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errors.MainError = CLigoError::CornerIsMissing;
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errors.pushVertexError (CLigoError::CornerIsMissing, edge[0], 0);
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errors.pushVertexError (CLigoError::CornerIsMissing, edge[edge.size()-1], 0);
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return false;
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}
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// Get rotation
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uint rotation = 4;
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if ((endX-startX)==1)
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{
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if ((endY-startY)==0)
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rotation = 0;
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}
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else if ((endX-startX)==-1)
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{
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if ((endY-startY)==0)
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rotation = 2;
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}
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else if ((endX-startX)==0)
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{
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if ((endY-startY)==1)
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rotation = 1;
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else if ((endY-startY)==-1)
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rotation = 3;
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}
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// Checks
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nlassert (rotation != 4);
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// Build the vertex array
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vector<CVector> vertexArray;
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vertexArray.resize (edge.size());
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// Rotate matrix
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CMatrix mat;
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mat.identity();
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mat.rotateZ ((float)rotation * (float)Pi / 2);
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mat.setPos (CVector (vertices[edge[0]].x, vertices[edge[0]].y, 0));
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mat.invert ();
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// Rotate the array
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for (uint i=0; i<edge.size(); i++)
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{
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// Get the value on the edge
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vertexArray[i] = mat * vertices[edge[i]];
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}
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// Build the edge
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_Edges.resize (edgeIndex+1);
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// It must work without errors
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CLigoError errorBis;
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if (!_Edges[edgeIndex].build (vertexArray, edge, rotation, startX, startY, config, errorBis))
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{
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// Flat zone
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errors.MainError = CLigoError::FlatZone;
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return false;
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}
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// One more edge
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edgeIndex++;
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// Exit ?
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if (vertIte == firstIte)
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break;
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// Clear the temp edge
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edge.clear ();
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// Push back the last vertex
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edge.push_back (*vertIte);
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}
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// Next vertex
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vertIte++;
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// End ?
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if (vertIte == listVert.end())
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// Start
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vertIte = listVert.begin();
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}
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sint32 bestX = 0x7fffffff;
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sint32 bestY = 0x80000000;
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uint bestEdge = 0xffffffff;
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// Sort edges : the first as the lower x then greater y
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uint edgeId;
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for (edgeId=0; edgeId<_Edges.size(); edgeId++)
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{
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// Get the matrix
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CMatrix mat;
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_Edges[edgeId].buildMatrix (mat, config);
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// First vertex
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CVector pos = mat * _Edges[edgeId].getVertex (0);
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// Get X and Y
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|
sint32 x = getSnappedIndex (pos.x, config.CellSize, config.Snap);
|
|
sint32 y = getSnappedIndex (pos.y, config.CellSize, config.Snap);
|
|
|
|
// Best ?
|
|
if ((x<bestX)||((x==bestX)&&(y>bestY)))
|
|
{
|
|
// This edgeId is best
|
|
bestX=x;
|
|
bestY=y;
|
|
bestEdge = edgeId;
|
|
}
|
|
}
|
|
|
|
// Check
|
|
nlassert (bestEdge!=0xffffffff);
|
|
|
|
// Reoder
|
|
std::vector<CZoneEdge> newEdge (_Edges.size());
|
|
for (edgeId=0; edgeId<_Edges.size(); edgeId++)
|
|
{
|
|
// Copy the edge
|
|
newEdge[edgeId]=_Edges[bestEdge++];
|
|
|
|
// Next
|
|
if (bestEdge==_Edges.size())
|
|
bestEdge=0;
|
|
}
|
|
|
|
// Copy the final array
|
|
_Edges=newEdge;
|
|
|
|
// Return ok
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Errors.
|
|
return false;
|
|
}
|
|
|
|
// ***************************************************************************
|
|
|
|
void CZoneTemplate::serial (NLMISC::IStream& s)
|
|
{
|
|
// open an XML node
|
|
s.xmlPush ("LIGO_ZONE_TEMPLATE");
|
|
|
|
// An header file
|
|
s.serialCheck (string ("LigoZoneTemplate") );
|
|
|
|
// Node for the boundaries
|
|
s.xmlPush ("EDGES");
|
|
|
|
// Serial the Vertices
|
|
s.serialCont (_Edges);
|
|
|
|
// Node for the boundaries
|
|
s.xmlPop ();
|
|
|
|
// Close the node
|
|
s.xmlPop ();
|
|
}
|
|
|
|
// ***************************************************************************
|
|
|
|
void CZoneTemplate::getMask (std::vector<bool> &mask, uint &width, uint &height)
|
|
{
|
|
// Some constantes
|
|
static const sint32 addX[4] = { 1, 0, -1, 0 };
|
|
static const sint32 addY[4] = { 0, 1, 0, -1 };
|
|
static const sint32 cellX[4] = { 0, -1, -1, 0 };
|
|
static const sint32 cellY[4] = { 0, 0, -1, -1 };
|
|
static const sint32 moveX[4] = { 0, 1, 0, -1 };
|
|
static const sint32 moveY[4] = { -1, 0, 1, 0 };
|
|
|
|
// Max
|
|
sint32 xMax = 0x80000000;
|
|
sint32 yMax = 0x80000000;
|
|
|
|
// For each edges
|
|
uint edges;
|
|
for (edges=0; edges<_Edges.size(); edges++)
|
|
{
|
|
// Get the rotation
|
|
uint32 rot = _Edges[edges].getRotation ();
|
|
nlassert (rot<4);
|
|
|
|
// Get X and Y max coordinates
|
|
sint32 x = _Edges[edges].getOffsetX () + addX[rot];
|
|
sint32 y = _Edges[edges].getOffsetY () + addY[rot];
|
|
|
|
// Greater ?
|
|
if (x > xMax)
|
|
xMax = x;
|
|
if (y > yMax)
|
|
yMax = y;
|
|
}
|
|
|
|
// Build the array
|
|
width = (uint32) xMax;
|
|
height = (uint32) yMax;
|
|
|
|
// Bit array for each cell
|
|
vector<uint32> edgeArray (xMax*yMax, 0);
|
|
|
|
// Resize it
|
|
mask.resize (xMax*yMax, false);
|
|
|
|
// Set of the cells in the mask
|
|
set<pair<sint32, sint32> > setCell;
|
|
|
|
// For each edge
|
|
for (edges=0; edges<_Edges.size(); edges++)
|
|
{
|
|
// Get the rotation
|
|
uint32 rot = _Edges[edges].getRotation ();
|
|
nlassert (rot<4);
|
|
|
|
// Get its x and y cell coordinate
|
|
sint32 x = _Edges[edges].getOffsetX () + cellX[rot];
|
|
sint32 y = _Edges[edges].getOffsetY () + cellY[rot];
|
|
|
|
// Fill the edge array
|
|
edgeArray[x+y*width] |= (1<<rot);
|
|
|
|
// Insert the cell
|
|
setCell.insert ( pair<sint32, sint32> (x, y) );
|
|
}
|
|
|
|
// Second set
|
|
set<pair<sint32, sint32> > setCell2;
|
|
|
|
// For each element in the set
|
|
set<pair<sint32, sint32> >::iterator ite = setCell.begin();
|
|
while (ite != setCell.end())
|
|
{
|
|
// For each direction
|
|
for (uint dir=0; dir<4; dir++)
|
|
{
|
|
// Get its x and y cell coordinate
|
|
sint32 x = ite->first;
|
|
sint32 y = ite->second;
|
|
|
|
// Edge in this direction ?
|
|
while ( (edgeArray[x+y*width] & (1<<dir) ) == 0)
|
|
{
|
|
// Move in this direction
|
|
x += moveX[dir];
|
|
y += moveY[dir];
|
|
|
|
// insert it
|
|
setCell2.insert ( pair<sint32, sint32> (x, y) );
|
|
|
|
// Some checks
|
|
nlassert (x>=0);
|
|
nlassert (x<(sint32)width);
|
|
nlassert (y>=0);
|
|
nlassert (y<(sint32)height);
|
|
}
|
|
}
|
|
|
|
// Next one
|
|
ite++;
|
|
}
|
|
|
|
// Merge the two set
|
|
ite = setCell2.begin();
|
|
while (ite != setCell2.end())
|
|
{
|
|
// Merge
|
|
setCell.insert (*ite);
|
|
|
|
// Next element
|
|
ite++;
|
|
}
|
|
|
|
// Done, fill the array
|
|
ite = setCell.begin();
|
|
while (ite != setCell.end())
|
|
{
|
|
// Merge
|
|
mask[ite->first+ite->second*width] = true;
|
|
|
|
// Next element
|
|
ite++;
|
|
}
|
|
}
|
|
|
|
// ***************************************************************************
|
|
|
|
}
|