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[COLLADAMaya-svncommit] SF.net SVN: colladamaya:[371] branches/nextgen
|
From: <rob...@us...> - 2009-02-24 10:19:41
|
Revision: 371
http://colladamaya.svn.sourceforge.net/colladamaya/?rev=371&view=rev
Author: robertwuerfel
Date: 2009-02-24 10:19:30 +0000 (Tue, 24 Feb 2009)
Log Message:
-----------
optionally calculate and export textangents and texbinormals for triangle meshes
Modified Paths:
--------------
branches/nextgen/COLLADABaseUtils/include/Math/COLLADABUMathVector3.h
branches/nextgen/COLLADAMax/include/COLLADAMaxGeometryExporter.h
branches/nextgen/COLLADAMax/scripts/COLLADAMax.vcproj
branches/nextgen/COLLADAMax/src/COLLADAMaxGeometryExporter.cpp
branches/nextgen/COLLADAStreamWriter/include/COLLADASWConstants.h
branches/nextgen/COLLADAStreamWriter/src/COLLADASWConstants.cpp
branches/nextgen/COLLADAStreamWriter/src/COLLADASWInputList.cpp
Added Paths:
-----------
branches/nextgen/COLLADAMax/include/COLLADAMaxIMeshAccess.h
branches/nextgen/COLLADAMax/include/COLLADAMaxMeshAccess.h
branches/nextgen/COLLADAMax/include/COLLADAMaxTexTangentCalculator.h
branches/nextgen/COLLADAMax/src/COLLADAMaxTexTangentCalculator.cpp
Modified: branches/nextgen/COLLADABaseUtils/include/Math/COLLADABUMathVector3.h
===================================================================
--- branches/nextgen/COLLADABaseUtils/include/Math/COLLADABUMathVector3.h 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADABaseUtils/include/Math/COLLADABUMathVector3.h 2009-02-24 10:19:30 UTC (rev 371)
@@ -25,7 +25,7 @@
/** Standard 3-dimensional vector.
@remarks
A direction in 3D space represented as distances along the 3
- orthoganal axes (x, y, z). Note that positions, directions and
+ orthogonal axes (x, y, z). Note that positions, directions and
scaling factors can be represented by a vector, depending on how
you interpret the values.
*/
@@ -73,6 +73,13 @@
: x( rkVector.x ), y( rkVector.y ), z( rkVector.z )
{}
+ inline void set( Real fX, Real fY, Real fZ )
+ {
+ x = fX;
+ y = fY;
+ z = fZ;
+ }
+
inline Real operator [] ( size_t i ) const
{
assert( i < 3 );
Modified: branches/nextgen/COLLADAMax/include/COLLADAMaxGeometryExporter.h
===================================================================
--- branches/nextgen/COLLADAMax/include/COLLADAMaxGeometryExporter.h 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADAMax/include/COLLADAMaxGeometryExporter.h 2009-02-24 10:19:30 UTC (rev 371)
@@ -30,6 +30,7 @@
namespace COLLADAMax
{
+ class TexTangentCalculator;
class ExportNode;
struct MorphControllerHelperGeometry;
@@ -52,8 +53,10 @@
/** List of indices.*/
typedef std::vector<int> IndicesList;
+ typedef std::map<int, TexTangentCalculator*> ChannelIndexTexTangentCalculatorMap;
+
public:
/** Symbol used for simple color materials.*/
static const String COLOR_MATERIAL_SYMBOL;
@@ -93,6 +96,8 @@
static const String SYMBOL_NAME_PREFIX;
+ ChannelIndexTexTangentCalculatorMap mChannelIndexTexTangentCalculatorMap;
+
public:
/** Constructor
@param exportNode The node which geometry should be exported
@@ -180,12 +185,6 @@
/** Create list of materials used by this geometry.*/
void flattenMaterials ( Mtl* material, MaterialList& mtlMap, int materialIndex = -1 );
- /** Calculates the textangents and texbinormals of the current mesh and MeshMap @a meshMap and stores them in
- @a texTangents and @a texBinormals. The are not reduces, i.e. no indices are needed since the are always the same.*/
- void calculateTriangleMeshTextangentsAndTexbinormals(int channelIndex,
- Point3List& texTangents,
- Point3List& texBinormals);
-
};
}
Added: branches/nextgen/COLLADAMax/include/COLLADAMaxIMeshAccess.h
===================================================================
--- branches/nextgen/COLLADAMax/include/COLLADAMaxIMeshAccess.h (rev 0)
+++ branches/nextgen/COLLADAMax/include/COLLADAMaxIMeshAccess.h 2009-02-24 10:19:30 UTC (rev 371)
@@ -0,0 +1,70 @@
+/*
+Copyright (c) 2008 NetAllied Systems GmbH
+
+This file is part of COLLADAMax.
+
+Portions of the code are:
+Copyright (c) 2005-2007 Feeling Software Inc.
+Copyright (c) 2005-2007 Sony Computer Entertainment America
+
+Based on the 3dsMax COLLADASW Tools:
+Copyright (c) 2005-2006 Autodesk Media Entertainment
+
+Licensed under the MIT Open Source License,
+for details please see LICENSE file or the website
+http://www.opensource.org/licenses/mit-license.php
+*/
+
+#ifndef __COLLADAMAX_IMESHACCESS_H__
+#define __COLLADAMAX_IMESHACCESS_H__
+
+#include "COLLADAMaxPrerequisites.h"
+
+#include "Math/COLLADABUMathVector3.h"
+
+namespace COLLADAMax
+{
+
+ /** Interface to access mesh data. Used by TexTangentCalculator */
+ class IMeshAccess
+ {
+ private:
+
+ public:
+
+ /** Constructor. */
+ IMeshAccess() {}
+
+ /** Destructor. */
+ virtual ~IMeshAccess(){}
+
+ /** Returns the number of faces in the mesh.*/
+ virtual int getFaceCount() = 0;
+
+ /** Returns the number of vertices of the face with index @a faceIndex.*/
+ virtual int getVertexCount( int faceIndex ) = 0;
+
+ /** Returns the vertex index of the @a faceVertexIndex'th vertex of the @a faceIndex'th face.*/
+ virtual int getPositionIndex( int faceIndex, int faceVertexIndex) = 0;
+
+ /** Returns the position of the vertex with index @a vertexIndex.*/
+ virtual COLLADABU::Math::Vector3 getVertex( int vertexIndex ) = 0;
+
+ /** Returns the normal index of the @a faceVertexIndex'th vertex of the @a faceIndex'th face.*/
+ virtual int getNormalIndex( int faceIndex, int faceVertexIndex) = 0;
+
+ /** Returns the normal with index @a normalIndex.*/
+ virtual COLLADABU::Math::Vector3 getNormal( int normalIndex ) = 0;
+
+ /** Returns the texcoord index of the @a faceVertexIndex'th vertex of the @a faceIndex'th face.*/
+ virtual int getTexcoordIndex( int faceIndex, int faceVertexIndex) = 0;
+
+ /** Returns the texcoord with index @a textureIndex.*/
+ virtual COLLADABU::Math::Vector3 getTexcoord( int textureIndex ) = 0;
+
+
+ };
+
+} // namespace COLLADAMAX
+
+#endif // __COLLADAMAX_IMESHACCESS_H__
Added: branches/nextgen/COLLADAMax/include/COLLADAMaxMeshAccess.h
===================================================================
--- branches/nextgen/COLLADAMax/include/COLLADAMaxMeshAccess.h (rev 0)
+++ branches/nextgen/COLLADAMax/include/COLLADAMaxMeshAccess.h 2009-02-24 10:19:30 UTC (rev 371)
@@ -0,0 +1,105 @@
+/*
+Copyright (c) 2008 NetAllied Systems GmbH
+
+This file is part of COLLADAMax.
+
+Portions of the code are:
+Copyright (c) 2005-2007 Feeling Software Inc.
+Copyright (c) 2005-2007 Sony Computer Entertainment America
+
+Based on the 3dsMax COLLADASW Tools:
+Copyright (c) 2005-2006 Autodesk Media Entertainment
+
+Licensed under the MIT Open Source License,
+for details please see LICENSE file or the website
+http://www.opensource.org/licenses/mit-license.php
+*/
+
+#ifndef __COLLADAMAX_MESHACCESS_H__
+#define __COLLADAMAX_MESHACCESS_H__
+
+#include "COLLADAMaxPrerequisites.h"
+
+#include "COLLADAMaxIMeshAccess.h"
+
+#include <max.h>
+
+
+namespace COLLADAMax
+{
+
+ /** Implements IMeshAccess for a max mesh */
+ class MeshAccess : public IMeshAccess
+ {
+ private:
+ Mesh& mMesh;
+ MeshNormalSpec *mNormalSpec;
+ MeshMap& mTextureMap;
+
+ public:
+
+ /** Constructor. */
+ MeshAccess( Mesh& mesh, int mapChannel)
+ : mMesh(mesh)
+ , mNormalSpec(mesh.GetSpecifiedNormals())
+ , mTextureMap(mesh.Map ( mapChannel ))
+ {
+ if ( !mNormalSpec )
+ {
+ mesh.SpecifyNormals();
+ mNormalSpec = mesh.GetSpecifiedNormals();
+ }
+ }
+
+ /** Destructor. */
+ virtual ~MeshAccess(){}
+
+ /** Returns the number of faces in the mesh.*/
+ virtual int getFaceCount() { return mMesh.getNumFaces(); }
+
+ /** Returns the number of vertices of the face with index @a faceIndex.*/
+ virtual int getVertexCount( int faceIndex ) { return 3; }
+
+ /** Returns the vertex index of the @a faceVertexIndex'th vertex of the @a faceIndex'th face.*/
+ virtual int getPositionIndex( int faceIndex, int faceVertexIndex) { return mMesh.faces[faceIndex].v[faceVertexIndex]; }
+
+ /** Returns the position of the vertex with index @a vertexIndex.*/
+ virtual COLLADABU::Math::Vector3 getVertex( int vertexIndex )
+ {
+ Point3& vertex = mMesh.verts[vertexIndex];
+ return COLLADABU::Math::Vector3(vertex.x, vertex.y, vertex.z);
+ }
+
+ /** Returns the normal index of the @a faceVertexIndex'th vertex of the @a faceIndex'th face.*/
+ virtual int getNormalIndex( int faceIndex, int faceVertexIndex){ return mNormalSpec->GetNormalIndex ( faceIndex, faceVertexIndex ) ; }
+
+ /** Returns the normal with index @a normalIndex.*/
+ virtual COLLADABU::Math::Vector3 getNormal( int normalIndex )
+ {
+ Point3 & normal = mNormalSpec->Normal ( normalIndex );
+ return COLLADABU::Math::Vector3(normal.x, normal.y, normal.z);
+ }
+
+ /** Returns the texcoord index of the @a faceVertexIndex'th vertex of the @a faceIndex'th face.*/
+ virtual int getTexcoordIndex( int faceIndex, int faceVertexIndex) { return mTextureMap.tf[ faceIndex ].t[faceVertexIndex];}
+
+ /** Returns the texcoord with index @a textureIndex.*/
+ virtual COLLADABU::Math::Vector3 getTexcoord( int textureIndex )
+ {
+ Point3& texCoord = mTextureMap.tv[ textureIndex ];
+ return COLLADABU::Math::Vector3(texCoord.x, texCoord.y, texCoord.z);
+ }
+
+ private:
+
+ /** Disable default copy ctor. */
+ MeshAccess( const MeshAccess& pre );
+
+ /** Disable default assignment operator. */
+ const MeshAccess& operator= ( const MeshAccess& pre );
+
+ };
+
+} // namespace COLLADAMAX
+
+#endif // __COLLADAMAX_MESHACCESS_H__
Added: branches/nextgen/COLLADAMax/include/COLLADAMaxTexTangentCalculator.h
===================================================================
--- branches/nextgen/COLLADAMax/include/COLLADAMaxTexTangentCalculator.h (rev 0)
+++ branches/nextgen/COLLADAMax/include/COLLADAMaxTexTangentCalculator.h 2009-02-24 10:19:30 UTC (rev 371)
@@ -0,0 +1,111 @@
+/*
+Copyright (c) 2008 NetAllied Systems GmbH
+
+This file is part of COLLADAMax.
+
+Portions of the code are:
+Copyright (c) 2005-2007 Feeling Software Inc.
+Copyright (c) 2005-2007 Sony Computer Entertainment America
+
+Based on the 3dsMax COLLADASW Tools:
+Copyright (c) 2005-2006 Autodesk Media Entertainment
+
+Licensed under the MIT Open Source License,
+for details please see LICENSE file or the website
+http://www.opensource.org/licenses/mit-license.php
+*/
+
+#ifndef __COLLADAMAX_TEXTANGENTCALCULATOR_H__
+#define __COLLADAMAX_TEXTANGENTCALCULATOR_H__
+
+#include "COLLADAMaxPrerequisites.h"
+#include "math/COLLADABUMathVector3.h"
+
+#include "COLLADAMaxIMeshAccess.h"
+
+#include <vector>
+
+namespace COLLADAMax
+{
+
+ /** Calculates textangents and texbinormals for a triangle mesh */
+ class TexTangentCalculator
+ {
+ public:
+ typedef COLLADABU::Math::Vector3 Vector3;
+ typedef COLLADABU::Math::Real Real;
+
+ struct VertexIdentifier
+ {
+ int positionIndex;
+ int normalIndex;
+ int textureIndex;
+ bool operator<(const VertexIdentifier& rhs) const;
+ };
+
+ struct VertexTexTangentInfo
+ {
+ Vector3 tangent;
+ Vector3 biTangent;
+ int count;
+ unsigned long index;
+ };
+
+ typedef std::map<VertexIdentifier, VertexTexTangentInfo*> VertexIdentifierVertexTexTangentInfoMap;
+
+
+ /** List of vector3.*/
+ typedef std::vector<VertexTexTangentInfo*> VertexTexTangentInfoList;
+
+ /** List of indices.*/
+ typedef std::vector<unsigned long> IndicesList;
+
+ private:
+ IMeshAccess* mMesh;
+
+ VertexTexTangentInfoList mTexTangents;
+
+ IndicesList mIndices;
+
+ VertexIdentifierVertexTexTangentInfoMap mVertexIdentifierVertexTexTangentInfoMap;
+
+ unsigned long mTexTangentsCount;
+
+ public:
+
+ /** Constructor. */
+ TexTangentCalculator( IMeshAccess* mesh );
+
+ /** Destructor. */
+ virtual ~TexTangentCalculator();
+
+ void calculateTriangleMeshTextangents();
+
+ const VertexTexTangentInfoList& getTexTangents() const { return mTexTangents; }
+
+ void clearTexTangentData();
+
+ const IndicesList& getIndices() const { return mIndices; }
+
+ private:
+
+ /** Disable default copy ctor. */
+ TexTangentCalculator( const TexTangentCalculator& pre );
+
+ /** Disable default assignment operator. */
+ const TexTangentCalculator& operator= ( const TexTangentCalculator& pre );
+
+ void computeTangent( Vector3 textureVertex[3], Vector3 geometryVertex[3], Vector3& texTangent);
+
+ unsigned long addTexTangent( int vertexIndex, int normalIndex, int textureIndex, const Vector3& texTangent );
+
+ void normalizeTangentsAndCalculateBiTangents();
+
+ void deleteTexTangentInfo();
+
+
+ };
+
+} // namespace COLLADAMAX
+
+#endif // __COLLADAMAX_TEXTANGENTCALCULATOR_H__
Modified: branches/nextgen/COLLADAMax/scripts/COLLADAMax.vcproj
===================================================================
--- branches/nextgen/COLLADAMax/scripts/COLLADAMax.vcproj 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADAMax/scripts/COLLADAMax.vcproj 2009-02-24 10:19:30 UTC (rev 371)
@@ -1799,6 +1799,10 @@
>
</File>
<File
+ RelativePath="..\src\COLLADAMaxTexTangentCalculator.cpp"
+ >
+ </File>
+ <File
RelativePath="..\src\COLLADAMaxVisualSceneExporter.cpp"
>
</File>
@@ -2221,6 +2225,10 @@
>
</File>
<File
+ RelativePath="..\include\COLLADAMaxIMeshAccess.h"
+ >
+ </File>
+ <File
RelativePath="..\include\COLLADAMaxLightExporter.h"
>
</File>
@@ -2229,10 +2237,18 @@
>
</File>
<File
+ RelativePath="..\include\COLLADAMaxMeshAccess.h"
+ >
+ </File>
+ <File
RelativePath="..\include\COLLADAMaxOptions.h"
>
</File>
<File
+ RelativePath="..\include\COLLADAMaxTexTangentCalculator.h"
+ >
+ </File>
+ <File
RelativePath="..\include\COLLADAMaxVisualSceneExporter.h"
>
</File>
@@ -2334,6 +2350,10 @@
>
</File>
</Filter>
+ <File
+ RelativePath="..\res\error.fx"
+ >
+ </File>
</Files>
<Globals>
</Globals>
Modified: branches/nextgen/COLLADAMax/src/COLLADAMaxGeometryExporter.cpp
===================================================================
--- branches/nextgen/COLLADAMax/src/COLLADAMaxGeometryExporter.cpp 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADAMax/src/COLLADAMaxGeometryExporter.cpp 2009-02-24 10:19:30 UTC (rev 371)
@@ -34,6 +34,9 @@
#include "COLLADAMaxXRefFunctions.h"
+#include "COLLADAMaxMeshAccess.h"
+#include "COLLADAMaxTexTangentCalculator.h"
+
#include <algorithm>
#include <max.h>
@@ -938,9 +941,16 @@
{
continue;
}
+
+ MeshAccess mesh( mTriObject->GetMesh(), channelIndex);
+ TexTangentCalculator* texTangentCalculator = new TexTangentCalculator( &mesh );
+ mChannelIndexTexTangentCalculatorMap.insert(std::make_pair(channelIndex, texTangentCalculator));
- calculateTriangleMeshTextangentsAndTexbinormals( channelIndex, texTangents, texBinormals);
+ texTangentCalculator->calculateTriangleMeshTextangents();
+ // calculateTriangleMeshTextangents( channelIndex, texTangents, texBinormals);
+
+ const TexTangentCalculator::VertexTexTangentInfoList& texTangents = texTangentCalculator->getTexTangents();
// textangents
size_t texTangentsCount = texTangents.size();
COLLADASW::FloatSource texTangentSource ( mGeometriesExporter->mSW );
@@ -958,14 +968,14 @@
for ( size_t j = 0; j < texTangentsCount; ++j)
{
- Point3& texTangent = texTangents[j];
+ COLLADABU::Math::Vector3& texTangent = texTangents[j]->tangent;
texTangentSource.appendValues ( texTangent.x, texTangent.y, texTangent.z );
}
texTangentSource.finish();
// texbinormals
- size_t texBinormalsCount = texBinormals.size();
+ size_t texBinormalsCount = texTangentsCount;
COLLADASW::FloatSource texBinormalSource ( mGeometriesExporter->mSW );
String texBinormalSourceId = mId + getTexbinormalSourceIdSuffix( channelIndex );
texBinormalSource.setId ( texBinormalSourceId );
@@ -981,11 +991,12 @@
for ( size_t j = 0; j < texBinormalsCount; ++j)
{
- Point3& texBinormal = texBinormals[j];
+ COLLADABU::Math::Vector3& texBinormal = texTangents[j]->biTangent;
texBinormalSource.appendValues ( texBinormal.x, texBinormal.y, texBinormal.z );
}
texBinormalSource.finish();
+ texTangentCalculator->clearTexTangentData();
}
}
@@ -1018,10 +1029,12 @@
for ( ChannelList::const_iterator it = channelList.begin(); it != channelList.end(); ++it )
{
- triangles.getInputList().push_back ( COLLADASW::Input ( ( *it <= 0 ) ? COLLADASW::COLOR : COLLADASW::TEXCOORD, "#" + mId + getTextureSourceIdSuffix ( *it ), offset++, *it ) );
- if ( mExportTextangentsAndNormals && ( *it > 0 ) )
+ int channelIndex = *it;
+ triangles.getInputList().push_back ( COLLADASW::Input ( ( channelIndex <= 0 ) ? COLLADASW::COLOR : COLLADASW::TEXCOORD, "#" + mId + getTextureSourceIdSuffix ( channelIndex ), offset++, channelIndex ) );
+ if ( mExportTextangentsAndNormals && ( channelIndex > 0 ) )
{
- triangles.getInputList().push_back ( COLLADASW::Input ( COLLADASW::TEXTANGENT, "#" + mId + getTextureSourceIdSuffix ( *it ), offset++, *it ) );
+ triangles.getInputList().push_back ( COLLADASW::Input ( COLLADASW::TEXTANGENT, "#" + mId + getTextangentSourceIdSuffix( channelIndex ), offset, channelIndex ) );
+ triangles.getInputList().push_back ( COLLADASW::Input ( COLLADASW::TEXBINORMAL, "#" + mId + getTexbinormalSourceIdSuffix( channelIndex ), offset++, channelIndex ) );
}
}
@@ -1046,6 +1059,13 @@
MeshMap & tmap = mesh.Map ( channel );
TVFace& tvFace = tmap.tf[ faceIndex ];
triangles.appendValues ( tvFace.t[ vertexIndex ] );
+
+ if ( mExportTextangentsAndNormals && ( channel > 0 ) )
+ {
+ const TexTangentCalculator* texTangentCalculator = mChannelIndexTexTangentCalculatorMap[channel];
+ const TexTangentCalculator::IndicesList& indices = texTangentCalculator->getIndices();
+ triangles.appendValues ( indices[ 3*faceIndex + vertexIndex ] );
+ }
}
}
}
@@ -1166,57 +1186,11 @@
- //---------------------------------------------------------------
- void GeometryExporter::calculateTriangleMeshTextangentsAndTexbinormals(int channelIndex,
- Point3List& texTangents,
- Point3List& texBinormals)
- {
- Mesh mesh = mTriObject->GetMesh();
- int numFaces = mesh.getNumFaces();
- Point3 geometryVertex[3];
- Point3 textureVertex[3];
- Point3 basisVectors[2];
+
- MeshMap& meshMap = mTriObject->GetMesh().Map ( channelIndex );
+
- TVFace* mapFaces = meshMap.tf;
- UVVert* mapVerts = meshMap.tv;
- texTangents.clear();
- texTangents.reserve( 3*numFaces );
- texBinormals.clear();
- texBinormals.reserve( 3*numFaces );
- for ( int i = 0; i < numFaces; ++i)
- {
-
- Face& geomFace = mesh.faces[i];
- geometryVertex[0] = mesh.verts[ geomFace.v[0] ];
- geometryVertex[1] = mesh.verts[ geomFace.v[1] ];
- geometryVertex[2] = mesh.verts[ geomFace.v[2] ];
-
-
- TVFace& mapFace = mapFaces[i];
- textureVertex[0] = mapVerts[ mapFace.t[0] ];
- textureVertex[1] = mapVerts[ mapFace.t[1] ];
- textureVertex[2] = mapVerts[ mapFace.t[2] ];
-
- ComputeTangentAndBinormal( textureVertex, geometryVertex, basisVectors );
-
- Point3 mapNormal = FNormalize( (textureVertex[1] - textureVertex[0]) ^ (textureVertex[2] - textureVertex[1]) );
- if( mapNormal.z<0 )
- {
- basisVectors[1] = -basisVectors[1]; //is the UV face flipped? flip the binormal
- }
-
- texTangents.push_back(basisVectors[0]);
- texBinormals.push_back(basisVectors[1]);
- }
-
- }
-
-
-
-
}
Added: branches/nextgen/COLLADAMax/src/COLLADAMaxTexTangentCalculator.cpp
===================================================================
--- branches/nextgen/COLLADAMax/src/COLLADAMaxTexTangentCalculator.cpp (rev 0)
+++ branches/nextgen/COLLADAMax/src/COLLADAMaxTexTangentCalculator.cpp 2009-02-24 10:19:30 UTC (rev 371)
@@ -0,0 +1,241 @@
+/*
+Copyright (c) 2008 NetAllied Systems GmbH
+
+This file is part of COLLADAMax.
+
+Portions of the code are:
+Copyright (c) 2005-2007 Feeling Software Inc.
+Copyright (c) 2005-2007 Sony Computer Entertainment America
+
+Based on the 3dsMax COLLADASW Tools:
+Copyright (c) 2005-2006 Autodesk Media Entertainment
+
+Licensed under the MIT Open Source License,
+for details please see LICENSE file or the website
+http://www.opensource.org/licenses/mit-license.php
+*/
+
+#include "COLLADAMaxStableHeaders.h"
+#include "COLLADAMaxTexTangentCalculator.h"
+
+
+
+namespace COLLADAMax
+{
+
+ TexTangentCalculator::TexTangentCalculator( IMeshAccess* mesh )
+ : mMesh(mesh)
+ , mTexTangentsCount(0)
+ {
+ }
+
+ //------------------------------
+ TexTangentCalculator::~TexTangentCalculator()
+ {
+ deleteTexTangentInfo();
+ }
+
+
+ void TexTangentCalculator::computeTangent( Vector3 textureVertex[3], Vector3 geometryVertex[3], Vector3& texTangent )
+ {
+ const Vector3& w1 = textureVertex[0];
+ const Vector3& w2 = textureVertex[1];
+ const Vector3& w3 = textureVertex[2];
+
+ const Vector3& v1 = geometryVertex[0];
+ const Vector3& v2 = geometryVertex[1];
+ const Vector3& v3 = geometryVertex[2];
+
+ Real x1 = v2.x - v1.x;
+ Real x2 = v3.x - v1.x;
+ Real y1 = v2.y - v1.y;
+ Real y2 = v3.y - v1.y;
+ Real z1 = v2.z - v1.z;
+ Real z2 = v3.z - v1.z;
+
+ Real s1 = w2.x - w1.x;
+ Real s2 = w3.x - w1.x;
+ Real t1 = w2.y - w1.y;
+ Real t2 = w3.y - w1.y;
+
+ Real r = (Real)1.0 / (s1 * t2 - s2 * t1);
+ texTangent.set( (t2 * x1 - t1 * x2) * r, (t2 * y1 - t1 * y2) * r, (t2 * z1 - t1 * z2) * r);
+ texTangent.normalise();
+ // tDir.set( (s1 * x2 - s2 * x1) * r, (s1 * y2 - s2 * y1) * r, (s1 * z2 - s2 * z1) * r);
+ }
+
+
+
+ //---------------------------------------------------------------
+ void TexTangentCalculator::calculateTriangleMeshTextangents()
+ {
+ mTexTangents.clear();
+
+ //Mesh mesh = mTriObject->GetMesh();
+
+ int numFaces = mMesh->getFaceCount();
+
+ mIndices.reserve( numFaces * 3 );
+
+ Vector3 geometryVertex[3];
+ Vector3 textureVertex[3];
+ Vector3 normalVertex[3];
+ Vector3 texTangent[3];
+ Vector3 computetTexTangent;
+/* Vector3 basisVectors[2];
+ Vector3 basisVectors2[2];
+ */
+
+// MeshMap& meshMap = mTriObject->GetMesh().Map ( channelIndex );
+
+// TVFace* mapFaces = meshMap.tf;
+// UVVert* mapVerts = meshMap.tv;
+
+
+ for ( int i = 0; i < numFaces; ++i)
+ {
+/* Face& geomFace = mesh.faces[i];
+ int index1 = geomFace.v[0];
+ int index2 = geomFace.v[1];
+ int index3 = geomFace.v[2];
+*/
+ int vertexIndex1 = mMesh->getPositionIndex(i, 0);
+ int vertexIndex2 = mMesh->getPositionIndex(i, 1);
+ int vertexIndex3 = mMesh->getPositionIndex(i, 2);
+
+ geometryVertex[0] = mMesh->getVertex(vertexIndex1);
+ geometryVertex[1] = mMesh->getVertex(vertexIndex2);
+ geometryVertex[2] = mMesh->getVertex(vertexIndex3);
+
+/* TVFace& mapFace = mapFaces[i];
+ textureVertex[0] = mapVerts[ mapFace.t[0] ];
+ textureVertex[1] = mapVerts[ mapFace.t[1] ];
+ textureVertex[2] = mapVerts[ mapFace.t[2] ];
+*/
+ int textureIndex1 = mMesh->getTexcoordIndex(i, 0);
+ int textureIndex2 = mMesh->getTexcoordIndex(i, 1);
+ int textureIndex3 = mMesh->getTexcoordIndex(i, 2);
+
+ textureVertex[0] = mMesh->getTexcoord( textureIndex1 );
+ textureVertex[1] = mMesh->getTexcoord( textureIndex2 );
+ textureVertex[2] = mMesh->getTexcoord( textureIndex3 );
+
+ computeTangent( textureVertex, geometryVertex, computetTexTangent );
+
+/* Point3 mapNormal = FNormalize( (textureVertex[1] - textureVertex[0]) ^ (textureVertex[2] - textureVertex[1]) );
+ if( mapNormal.z<0 )
+ {
+ basisVectors[1] = -basisVectors[1]; //is the UV face flipped? flip the binormal
+ }
+*/
+
+ int normalIndex1 = mMesh->getNormalIndex(i, 0);
+ int normalIndex2 = mMesh->getNormalIndex(i, 1);
+ int normalIndex3 = mMesh->getNormalIndex(i, 2);
+
+ normalVertex[0] = mMesh->getNormal( normalIndex1 );
+ normalVertex[1] = mMesh->getNormal( normalIndex2 );
+ normalVertex[2] = mMesh->getNormal( normalIndex3 );
+
+ texTangent[0] = computetTexTangent - normalVertex[0] * (normalVertex[0].dotProduct(computetTexTangent));
+ texTangent[1] = computetTexTangent - normalVertex[1] * (normalVertex[1].dotProduct(computetTexTangent));
+ texTangent[2] = computetTexTangent - normalVertex[2] * (normalVertex[2].dotProduct(computetTexTangent));
+
+ mIndices.push_back(addTexTangent( vertexIndex1, normalIndex1, textureIndex1, texTangent[0] ));
+ mIndices.push_back(addTexTangent( vertexIndex2, normalIndex2, textureIndex2, texTangent[1] ));
+ mIndices.push_back(addTexTangent( vertexIndex3, normalIndex3, textureIndex3, texTangent[2] ));
+
+ }
+
+ normalizeTangentsAndCalculateBiTangents();
+ }
+
+ //---------------------------------------------------------------
+ unsigned long TexTangentCalculator::addTexTangent( int vertexIndex, int normalIndex, int textureIndex, const Vector3& texTangent )
+ {
+ VertexIdentifier vertexIdentifier;
+ vertexIdentifier.positionIndex = vertexIndex;
+ vertexIdentifier.normalIndex = normalIndex;
+ vertexIdentifier.textureIndex = textureIndex;
+ VertexIdentifierVertexTexTangentInfoMap::iterator it = mVertexIdentifierVertexTexTangentInfoMap.find(vertexIdentifier);
+ if ( it == mVertexIdentifierVertexTexTangentInfoMap.end() )
+ {
+ VertexTexTangentInfo* vertexTexTangentInfo = new VertexTexTangentInfo;
+ vertexTexTangentInfo->tangent = texTangent;
+ vertexTexTangentInfo->count = 1;
+ vertexTexTangentInfo->index = mTexTangentsCount++;
+ mTexTangents.push_back(vertexTexTangentInfo);
+ mVertexIdentifierVertexTexTangentInfoMap.insert(std::make_pair(vertexIdentifier, vertexTexTangentInfo));
+ return vertexTexTangentInfo->index;
+ }
+ else
+ {
+ VertexTexTangentInfo& vertexTexTangentInfo = *it->second;
+ vertexTexTangentInfo.tangent += texTangent;
+ vertexTexTangentInfo.count++;
+ return vertexTexTangentInfo.index;
+ }
+ }
+
+ //---------------------------------------------------------------
+ void TexTangentCalculator::normalizeTangentsAndCalculateBiTangents()
+ {
+ VertexIdentifierVertexTexTangentInfoMap::iterator it = mVertexIdentifierVertexTexTangentInfoMap.begin();
+ VertexIdentifierVertexTexTangentInfoMap::iterator endIt = mVertexIdentifierVertexTexTangentInfoMap.end();
+ for ( ; it != endIt; ++it)
+ {
+ VertexTexTangentInfo& vertexTexTangentInfo = *it->second;
+ vertexTexTangentInfo.tangent = vertexTexTangentInfo.tangent / (Real)(vertexTexTangentInfo.count);
+
+ const VertexIdentifier& vertexIdentifier = it->first;
+ Vector3 normal = mMesh->getNormal( vertexIdentifier.normalIndex );
+
+ vertexTexTangentInfo.biTangent = vertexTexTangentInfo.tangent.crossProduct( normal );
+ vertexTexTangentInfo.biTangent.normalise();
+ }
+ }
+
+ //---------------------------------------------------------------
+ void TexTangentCalculator::clearTexTangentData()
+ {
+ mTexTangents.clear();
+ deleteTexTangentInfo();
+ mVertexIdentifierVertexTexTangentInfoMap.clear();
+ }
+
+ //---------------------------------------------------------------
+ void TexTangentCalculator::deleteTexTangentInfo()
+ {
+ VertexIdentifierVertexTexTangentInfoMap::iterator it = mVertexIdentifierVertexTexTangentInfoMap.begin();
+ VertexIdentifierVertexTexTangentInfoMap::iterator endIt = mVertexIdentifierVertexTexTangentInfoMap.end();
+ for ( ; it != endIt; ++it)
+ {
+ delete it->second;
+ }
+ }
+
+ //---------------------------------------------------------------
+ bool TexTangentCalculator::VertexIdentifier::operator<( const VertexIdentifier& rhs ) const
+ {
+ if ( positionIndex < rhs.positionIndex )
+ return true;
+
+ if ( positionIndex > rhs.positionIndex )
+ return false;
+
+ if ( normalIndex < rhs.normalIndex )
+ return true;
+
+ if ( normalIndex > rhs.normalIndex )
+ return false;
+
+ if ( textureIndex < rhs.textureIndex )
+ return true;
+
+ if ( textureIndex > rhs.textureIndex )
+ return false;
+
+ return false;
+ }
+
+} // namespace COLLADAMax
Modified: branches/nextgen/COLLADAStreamWriter/include/COLLADASWConstants.h
===================================================================
--- branches/nextgen/COLLADAStreamWriter/include/COLLADASWConstants.h 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADAStreamWriter/include/COLLADASWConstants.h 2009-02-24 10:19:30 UTC (rev 371)
@@ -259,7 +259,9 @@
static const String CSW_SEMANTIC_OUTPUT;
static const String CSW_SEMANTIC_OUT_TANGENT;
static const String CSW_SEMANTIC_POSITION;
- static const String CSW_SEMANTIC_TEXCOORD;
+ static const String CSW_SEMANTIC_TEXCOORD;
+ static const String CSW_SEMANTIC_TEXTANGENT;
+ static const String CSW_SEMANTIC_TEXBINORMAL;
static const String CSW_SEMANTIC_VERTEX;
static const String CSW_SEMANTIC_WEIGHT;
Modified: branches/nextgen/COLLADAStreamWriter/src/COLLADASWConstants.cpp
===================================================================
--- branches/nextgen/COLLADAStreamWriter/src/COLLADASWConstants.cpp 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADAStreamWriter/src/COLLADASWConstants.cpp 2009-02-24 10:19:30 UTC (rev 371)
@@ -249,7 +249,9 @@
const String CSWC::CSW_SEMANTIC_OUTPUT = "OUTPUT";
const String CSWC::CSW_SEMANTIC_OUT_TANGENT = "OUT_TANGENT";
const String CSWC::CSW_SEMANTIC_POSITION = "POSITION";
- const String CSWC::CSW_SEMANTIC_TEXCOORD = "TEXCOORD";
+ const String CSWC::CSW_SEMANTIC_TEXCOORD = "TEXCOORD";
+ const String CSWC::CSW_SEMANTIC_TEXTANGENT = "TEXTANGENT";
+ const String CSWC::CSW_SEMANTIC_TEXBINORMAL = "TEXBINORMAL";
const String CSWC::CSW_SEMANTIC_VERTEX = "VERTEX";
const String CSWC::CSW_SEMANTIC_WEIGHT = "WEIGHT";
Modified: branches/nextgen/COLLADAStreamWriter/src/COLLADASWInputList.cpp
===================================================================
--- branches/nextgen/COLLADAStreamWriter/src/COLLADASWInputList.cpp 2009-02-20 15:55:04 UTC (rev 370)
+++ branches/nextgen/COLLADAStreamWriter/src/COLLADASWInputList.cpp 2009-02-24 10:19:30 UTC (rev 371)
@@ -52,9 +52,15 @@
case NORMAL:
return CSWC::CSW_SEMANTIC_NORMAL;
- case TEXCOORD:
- return CSWC::CSW_SEMANTIC_TEXCOORD;
+ case TEXCOORD:
+ return CSWC::CSW_SEMANTIC_TEXCOORD;
+ case TEXTANGENT:
+ return CSWC::CSW_SEMANTIC_TEXTANGENT;
+
+ case TEXBINORMAL:
+ return CSWC::CSW_SEMANTIC_TEXBINORMAL;
+
case COLOR:
return CSWC::CSW_SEMANTIC_COLOR;
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