khanat-opennel-code/code/nel/src/pacs/exterior_mesh.cpp

102 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/>.
#include "stdpacs.h"
#include "nel/pacs/exterior_mesh.h"
#include "nel/pacs/local_retriever.h"
#include "nel/pacs/collision_desc.h"
using namespace std;
using namespace NLMISC;
namespace NLPACS
{
// Functions for vertices comparison.
// total order relation
static inline bool isStrictlyLess(const CVector &a, const CVector &b)
{
if (a.x < b.x) return true;
if (a.x > b.x) return false;
if (a.y < b.y) return true;
if (a.y > b.y) return false;
if (a.z < b.y) return true;
return false;
}
static inline bool isStrictlyGreater(const CVector &a, const CVector &b)
{
if (a.x > b.x) return true;
if (a.x < b.x) return false;
if (a.y > b.y) return true;
if (a.y < b.y) return false;
if (a.z > b.y) return true;
return false;
}
CExteriorMesh::CExteriorMesh() { }
void CExteriorMesh::setEdges(const vector<CExteriorMesh::CEdge> &edges)
{
_Edges = edges;
_OrderedEdges.clear();
uint i;
for (i=0; i+1<_Edges.size(); )
{
_OrderedEdges.resize(_OrderedEdges.size()+1);
COrderedEdges &edges = _OrderedEdges.back();
edges.Start = i;
if (isStrictlyLess(_Edges[i].Start, _Edges[i+1].Start))
{
edges.Forward = true;
do
{
++i;
}
while (i+1<_Edges.size() && _Edges[i].Link != -2 && isStrictlyLess(_Edges[i].Start, _Edges[i+1].Start));
}
else
{
edges.Forward = false;
do
{
++i;
}
while (i+1<_Edges.size() && _Edges[i].Link != -2 && isStrictlyGreater(_Edges[i].Start, _Edges[i+1].Start));
}
edges.End = i;
if (_Edges[i].Link == -2)
++i;
}
}
void CExteriorMesh::serial(NLMISC::IStream &f)
{
/*
Version 0:
- base version.
*/
(void)f.serialVersion(0);
f.serialCont(_Edges);
f.serialCont(_OrderedEdges);
f.serialCont(_Links);
f.serial(_BBox);
}
};