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Switched to Half-Edge based data structure for meshes.

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This commit is contained in:
David Williams
2007-09-05 21:40:32 +00:00
parent 9bf977b704
commit 2c69a373a1
11 changed files with 329 additions and 89 deletions
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53
include/SurfaceEdge.h
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@ -0,0 +1,53 @@
/******************************************************************************
This file is part of a voxel plugin for OGRE
Copyright (C) 2006 David Williams
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
******************************************************************************/
#ifndef __SurfaceEdge_H__
#define __SurfaceEdge_H__
#include "OgrePrerequisites.h"
namespace Ogre
{
class SurfaceVertex;
typedef std::list<SurfaceVertex>::iterator SurfaceVertexIterator;
class SurfaceTriangle;
typedef std::list<SurfaceTriangle>::iterator SurfaceTriangleIterator;
class SurfaceEdge;
typedef std::list<SurfaceEdge>::iterator SurfaceEdgeIterator;
class SurfaceEdge
{
public:
SurfaceVertexIterator target;
SurfaceTriangleIterator triangle;
SurfaceEdgeIterator nextHalfEdge;
SurfaceEdgeIterator otherHalfEdge;
SurfaceEdge();
};
bool operator == (const SurfaceEdge& lhs, const SurfaceEdge& rhs);
bool operator < (const SurfaceEdge& lhs, const SurfaceEdge& rhs);
}
#endif

13
include/SurfacePatch.h
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@ -19,9 +19,11 @@ namespace Ogre
};
class SurfaceVertex;
typedef std::set<SurfaceVertex>::iterator SurfaceVertexIterator;
typedef std::list<SurfaceVertex>::iterator SurfaceVertexIterator;
class SurfaceTriangle;
typedef std::set<SurfaceTriangle>::iterator SurfaceTriangleIterator;
typedef std::list<SurfaceTriangle>::iterator SurfaceTriangleIterator;
class SurfaceEdge;
typedef std::list<SurfaceEdge>::iterator SurfaceEdgeIterator;
class SurfacePatch
{
@ -38,15 +40,16 @@ namespace Ogre
void computeNormalsFromVolume(VolumeIterator volIter);
void decimate(void);
//void decimate(void);
//bool verticesArePlanar(SurfaceVertexIterator iterCurrentVertex);
UIntVector3 m_v3dOffset;
private:
std::set<SurfaceVertex> m_setVertices;
std::set<SurfaceTriangle> m_setTriangles;
std::list<SurfaceVertex> m_listVertices;
std::list<SurfaceTriangle> m_listTriangles;
std::list<SurfaceEdge> m_listEdges;
//std::vector<SurfaceVertex> m_vecVertexData;
//std::vector<uint> m_vecIndexData;

14
include/SurfaceTriangle.h
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@ -25,25 +25,21 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
namespace Ogre
{
class SurfaceVertex;
typedef std::set<SurfaceVertex>::iterator SurfaceVertexIterator;
typedef std::list<SurfaceVertex>::iterator SurfaceVertexIterator;
class SurfaceTriangle;
typedef std::set<SurfaceTriangle>::iterator SurfaceTriangleIterator;
typedef std::list<SurfaceTriangle>::iterator SurfaceTriangleIterator;
class SurfaceEdge;
typedef std::list<SurfaceEdge>::iterator SurfaceEdgeIterator;
class SurfaceTriangle
{
public:
SurfaceVertexIterator v0;
SurfaceVertexIterator v1;
SurfaceVertexIterator v2;
SurfaceEdgeIterator edge;
SurfaceTriangle();
SurfaceTriangle(SurfaceVertexIterator v0ToSet, SurfaceVertexIterator v1ToSet, SurfaceVertexIterator v2ToSet);
};
typedef std::set<SurfaceTriangle>::iterator SurfaceTriangleIterator;
bool operator == (const SurfaceTriangle& lhs, const SurfaceTriangle& rhs);
bool operator < (const SurfaceTriangle& lhs, const SurfaceTriangle& rhs);

10
include/SurfaceVertex.h
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@ -28,9 +28,11 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
namespace Ogre
{
class SurfaceVertex;
typedef std::set<SurfaceVertex>::iterator SurfaceVertexIterator;
typedef std::list<SurfaceVertex>::iterator SurfaceVertexIterator;
class SurfaceTriangle;
typedef std::set<SurfaceTriangle>::iterator SurfaceTriangleIterator;
typedef std::list<SurfaceTriangle>::iterator SurfaceTriangleIterator;
class SurfaceEdge;
typedef std::list<SurfaceEdge>::iterator SurfaceEdgeIterator;
class SurfaceVertex
{
@ -38,9 +40,9 @@ namespace Ogre
UIntVector3 position;
Vector3 normal;
float alpha;
uchar flags;
std::list<SurfaceTriangleIterator> listTrianglesUsingThisVertex;
std::list<SurfaceVertexIterator> listConnectedVertices;
SurfaceEdgeIterator edge;
SurfaceVertex();