89 lines
2.5 KiB
C++
89 lines
2.5 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_PATCHUV_LOCATOR_H
|
|
#define NL_PATCHUV_LOCATOR_H
|
|
|
|
#include "nel/misc/types_nl.h"
|
|
#include "nel/3d/patch.h"
|
|
#include "nel/misc/vector_2f.h"
|
|
|
|
|
|
namespace NL3D
|
|
{
|
|
|
|
|
|
// ***************************************************************************
|
|
/**
|
|
* From a patch and UV coordinate in [0,OrderS], [0,OrderT], retrieve the appropriate coordinate in neighborhood.
|
|
* \author Lionel Berenguier
|
|
* \author Nevrax France
|
|
* \date 2001
|
|
*/
|
|
class CPatchUVLocator
|
|
{
|
|
public:
|
|
|
|
// build information for a patch and his 1 to 4 neigbhor on a edge.
|
|
void build(const CPatch *patchCenter, sint edgeCenter, CPatch::CBindInfo &bindInfo);
|
|
|
|
|
|
// for an uv given in src patch basis, find the associate patch.
|
|
uint selectPatch(const NLMISC::CVector2f &uvIn);
|
|
|
|
|
|
// for an uv given in src patch basis, and the number of patch we want (for bind 1/X, see selectPatch),
|
|
// find the neighbor UV, and the neighbor patch.
|
|
void locateUV(const NLMISC::CVector2f &uvIn, uint patch, CPatch *&patchOut, NLMISC::CVector2f &uvOut);
|
|
|
|
|
|
/** return true only if the 2 edges have same number of tiles.
|
|
* bind 1/X case: return true only if ALL the adjacents patchs respect this rule. So you are sure that
|
|
* for all the src patch, one tile has exaclty one neighbor tile near him.
|
|
*/
|
|
bool sameEdgeOrder() const {return _SameEdgeOrder;}
|
|
|
|
|
|
private:
|
|
|
|
struct CUVBasis
|
|
{
|
|
NLMISC::CVector2f UvI, UvJ, UvP;
|
|
|
|
void mulPoint(const NLMISC::CVector2f &uvIn, NLMISC::CVector2f &uvOut)
|
|
{
|
|
uvOut= UvP + uvIn.x * UvI + uvIn.y * UvJ;
|
|
}
|
|
};
|
|
|
|
private:
|
|
CPatch *_CenterPatch;
|
|
sint _CenterPatchEdge;
|
|
sint _NPatchs;
|
|
CPatch *_NeighborPatch[4];
|
|
CUVBasis _NeighborBasis[4];
|
|
bool _SameEdgeOrder;
|
|
|
|
|
|
};
|
|
|
|
|
|
} // NL3D
|
|
|
|
|
|
#endif // NL_PATCHUV_LOCATOR_H
|
|
|
|
/* End of patchuv_locator.h */
|