text: //
  // Copyright (c) 2008-2020 the Urho3D project.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  
  #include "../Precompiled.h"
  
  #include "../Navigation/NavBuildData.h"
  
  #include <DetourTileCache/DetourTileCacheBuilder.h>
  #include <Recast/Recast.h>
  
  namespace Urho3D
  {
  
  NavBuildData::NavBuildData() :
      ctx_(new rcContext(true)),
      heightField_(nullptr),
      compactHeightField_(nullptr)
  {
  }
  
  NavBuildData::~NavBuildData()
  {
      delete(ctx_);
      ctx_ = nullptr;
      rcFreeHeightField(heightField_);
      heightField_ = nullptr;
      rcFreeCompactHeightfield(compactHeightField_);
      compactHeightField_ = nullptr;
  }
  
  SimpleNavBuildData::SimpleNavBuildData() :
      NavBuildData(),
      contourSet_(nullptr),
      polyMesh_(nullptr),
      polyMeshDetail_(nullptr)
  {
  }
  
  SimpleNavBuildData::~SimpleNavBuildData()
  {
      rcFreeContourSet(contourSet_);
      contourSet_ = nullptr;
      rcFreePolyMesh(polyMesh_);
      polyMesh_ = nullptr;
      rcFreePolyMeshDetail(polyMeshDetail_);
      polyMeshDetail_ = nullptr;
  }
  
  DynamicNavBuildData::DynamicNavBuildData(dtTileCacheAlloc* allocator) :
      NavBuildData(),
      contourSet_(nullptr),
      polyMesh_(nullptr),
      heightFieldLayers_(nullptr),
      alloc_(allocator)
  {
      assert(allocator);
  }
  
  DynamicNavBuildData::~DynamicNavBuildData()
  {
      dtFreeTileCacheContourSet(alloc_, contourSet_);
      contourSet_ = nullptr;
      dtFreeTileCachePolyMesh(alloc_, polyMesh_);
      polyMesh_ = nullptr;
      rcFreeHeightfieldLayerSet(heightFieldLayers_);
      heightFieldLayers_ = nullptr;
  }
  
  }
  