//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// 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 "platform/platform.h"
#include "scene/zones/scenePolyhedralZone.h"

#include "scene/mixin/scenePolyhedralObject.impl.h"


//-----------------------------------------------------------------------------

ScenePolyhedralZone::ScenePolyhedralZone( const PolyhedronType& polyhedron )
   : Parent( polyhedron )
{
}

//-----------------------------------------------------------------------------

bool ScenePolyhedralZone::onAdd()
{
   if( !Parent::onAdd() )
      return false;

   // Precompute polyhedron/AABB intersection data, if not
   // a trivial box polyhedron.

   if( !mIsBox )
   {
      _updateIntersector();

      // Also need to update OBB.
      _updateOrientedWorldBox();
   }
      
   return true;
}

//-----------------------------------------------------------------------------

void ScenePolyhedralZone::setTransform( const MatrixF& mat )
{
   Parent::setTransform( mat );

   // Recompute intersection data.

   if( !mIsBox )
      _updateIntersector();
}

//-----------------------------------------------------------------------------

void ScenePolyhedralZone::_updateOrientedWorldBox()
{
   if( mIsBox )
      Parent::_updateOrientedWorldBox();
   else
       mOrientedWorldBox.set( getTransform(), mObjBox.getExtents() * getScale() );
}

//-----------------------------------------------------------------------------

bool ScenePolyhedralZone::getOverlappingZones( const Box3F& aabb, U32* outZones, U32& outNumZones )
{
   // If a trivial box, let parent handle this.

   if( mIsBox )
      return Parent::getOverlappingZones( aabb, outZones, outNumZones );

   // Otherwise, use the intersector.

   OverlapTestResult overlap = mIntersector.test( aabb );
   
   if( overlap == GeometryOutside )
   {
      outNumZones = 0;
      return true;
   }

   outZones[ 0 ] = getZoneRangeStart();
   outNumZones = 1;

   return ( overlap != GeometryInside );
}
