140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
|
|
// Copyright (C) 2010 Winch Gate Property Limited
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as
|
|
// published by the Free Software Foundation, either version 3 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#ifndef NL_CHAIN_QUAD_H
|
|
#define NL_CHAIN_QUAD_H
|
|
|
|
#include "nel/misc/types_nl.h"
|
|
#include "nel/misc/aabbox.h"
|
|
#include "chain.h"
|
|
#include "collision_surface_temp.h"
|
|
#include <vector>
|
|
|
|
// _X is defined in some versions of linux/ctype.h
|
|
#ifdef _X
|
|
# undef _X
|
|
#endif
|
|
|
|
namespace NLPACS
|
|
{
|
|
|
|
using NLMISC::CVector;
|
|
using NLMISC::IStream;
|
|
|
|
// ***************************************************************************
|
|
struct EChainQuad : public NLMISC::Exception
|
|
{
|
|
EChainQuad(const std::string &reason) : Exception(reason) { }
|
|
};
|
|
|
|
|
|
// ***************************************************************************
|
|
/**
|
|
* a quadgrid of list of edge chain.
|
|
* \author Lionel Berenguier
|
|
* \author Nevrax France
|
|
* \date 2001
|
|
*/
|
|
class CChainQuad
|
|
{
|
|
public:
|
|
|
|
/// Constructor
|
|
CChainQuad();
|
|
/// Copy Constructor
|
|
CChainQuad(const CChainQuad &o);
|
|
/// Destructor
|
|
~CChainQuad();
|
|
/// operator=.
|
|
CChainQuad &operator=(const CChainQuad &o);
|
|
|
|
|
|
/// build a chain quad, with a list of OrderedChains.
|
|
void build(const std::vector<COrderedChain> &ochains);
|
|
|
|
|
|
/** look in the quad to select a list of chain from a bbox.
|
|
* NB: The outpout do not contains any redundant edge. A OChain appears only one time in the result.
|
|
* \param bbox the area of interest.
|
|
* \param cst the array of CEdgeChainEntry to fill. contain also OChainLUT, an array for internal use. In: must be filled with 0xFFFF. Out: still filled with 0xFFFF.
|
|
* \return number of edgechain found. stored in cst.EdgeChainEntries (array cleared first).
|
|
*/
|
|
sint selectEdges(const NLMISC::CAABBox &bbox, CCollisionSurfaceTemp &cst) const;
|
|
|
|
/** look in the quad to select a list of chain from a bbox.
|
|
* NB: The outpout do not contains any redundant edge. A OChain appears only one time in the result.
|
|
* \param start the starting point of the selection segment.
|
|
* \param end the ending point of the selection segment.
|
|
* \param cst the array of CEdgeChainEntry to fill. contain also OChainLUT, an array for internal use. In: must be filled with 0xFFFF. Out: still filled with 0xFFFF.
|
|
* \return number of edgechain found. stored in cst.EdgeChainEntries (array cleared first).
|
|
*/
|
|
sint selectEdges(CVector start, CVector end, CCollisionSurfaceTemp &cst) const;
|
|
|
|
|
|
/// serial.
|
|
void serial(NLMISC::IStream &f);
|
|
|
|
/// clear
|
|
void clear()
|
|
{
|
|
NLMISC::contReset(_Quad);
|
|
_Width = 0;
|
|
_Height = 0;
|
|
_X = 0;
|
|
_Y = 0;
|
|
delete [] _QuadData;
|
|
_QuadData = NULL;
|
|
_QuadDataLen = 0;
|
|
}
|
|
|
|
|
|
// **************************
|
|
private:
|
|
|
|
/** W*H pointers on array of CEdgeChainEntry. NULL if no edge in this quad.
|
|
* Each array is 1xuint16(LEN) + LEN*CEdgeChainEntry.
|
|
*/
|
|
std::vector<uint8*> _Quad;
|
|
/// Width of the quadgrid.
|
|
uint32 _Width;
|
|
/// Height of the quadgrid.
|
|
uint32 _Height;
|
|
/// Postion of the chainquad.
|
|
sint32 _X, _Y;
|
|
/// Single memory block of CEdgeChainEntry chains.
|
|
uint8 *_QuadData;
|
|
/// size (in byte) of _QuadData.
|
|
uint32 _QuadDataLen;
|
|
|
|
|
|
static const float _QuadElementSize; // = 4 meters.
|
|
|
|
|
|
private:
|
|
void addEdgeToQuadNode(std::list<CEdgeChainEntry> &quadNode, sint ochainId, sint edgeId);
|
|
|
|
// get local integer bounds in the grid.
|
|
void getGridBounds(sint32 &x0, sint32 &y0, sint32 &x1, sint32 &y1, const CVector &minP, const CVector &maxP) const;
|
|
|
|
};
|
|
|
|
|
|
} // NLPACS
|
|
|
|
|
|
#endif // NL_CHAIN_QUAD_H
|
|
|
|
/* End of chain_quad.h */
|