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assimp/code/3DSConverter.cpp

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/** @file Implementation of the 3ds importer class */
#include "3DSLoader.h"
#include "MaterialSystem.h"
#include "../include/IOStream.h"
#include "../include/IOSystem.h"
#include "../include/aiMesh.h"
#include "../include/aiScene.h"
#include "../include/aiAssert.h"
#include <boost/scoped_ptr.hpp>
using namespace Assimp;
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::ReplaceDefaultMaterial()
{
// try to find an existing material that matches the
// typical default material setting:
// - no textures
// - diffuse color (in grey!)
// NOTE: This is here to workaround the fact that some
// exporters are writing a default material, too.
unsigned int iIndex = 0xcdcdcdcd;
for (unsigned int i = 0; i < this->mScene->mMaterials.size();++i)
{
if (std::string::npos == this->mScene->mMaterials[i].mName.find("default") &&
std::string::npos == this->mScene->mMaterials[i].mName.find("DEFAULT"))continue;
if (this->mScene->mMaterials[i].mDiffuse.r !=
this->mScene->mMaterials[i].mDiffuse.g ||
this->mScene->mMaterials[i].mDiffuse.r !=
this->mScene->mMaterials[i].mDiffuse.b)continue;
if (this->mScene->mMaterials[i].sTexDiffuse.mMapName.length() != 0 ||
this->mScene->mMaterials[i].sTexBump.mMapName.length()!= 0 ||
this->mScene->mMaterials[i].sTexOpacity.mMapName.length() != 0 ||
this->mScene->mMaterials[i].sTexEmissive.mMapName.length() != 0 ||
this->mScene->mMaterials[i].sTexSpecular.mMapName.length() != 0 ||
this->mScene->mMaterials[i].sTexShininess.mMapName.length() != 0 )continue;
iIndex = i;
}
if (0xcdcdcdcd == iIndex)iIndex = this->mScene->mMaterials.size();
// now iterate through all meshes and through all faces and
// find all faces that are using the default material
unsigned int iCnt = 0;
for (std::vector<Dot3DS::Mesh>::iterator
i = this->mScene->mMeshes.begin();
i != this->mScene->mMeshes.end();++i)
{
for (std::vector<unsigned int>::iterator
a = (*i).mFaceMaterials.begin();
a != (*i).mFaceMaterials.end();++a)
{
// NOTE: The additional check seems to be necessary,
// some exporters seem to generate invalid data here
if (0xcdcdcdcd == (*a) || (*a) >= this->mScene->mMaterials.size())
{
(*a) = iIndex;
++iCnt;
}
}
}
if (0 != iCnt && iIndex == this->mScene->mMaterials.size())
{
// we need to create our own default material
Dot3DS::Material sMat;
sMat.mDiffuse = aiColor3D(0.3f,0.3f,0.3f);
sMat.mName = "%%%DEFAULT";
this->mScene->mMaterials.push_back(sMat);
}
return;
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::CheckIndices(Dot3DS::Mesh* sMesh)
{
for (std::vector< Dot3DS::Face >::iterator
i = sMesh->mFaces.begin();
i != sMesh->mFaces.end();++i)
{
// check whether all indices are in range
if ((*i).i1 >= sMesh->mPositions.size())
{
(*i).i1 = sMesh->mPositions.size()-1;
}
if ((*i).i2 >= sMesh->mPositions.size())
{
(*i).i2 = sMesh->mPositions.size()-1;
}
if ((*i).i3 >= sMesh->mPositions.size())
{
(*i).i3 = sMesh->mPositions.size()-1;
}
}
return;
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::MakeUnique(Dot3DS::Mesh* sMesh)
{
std::vector<aiVector3D> vNew;
vNew.resize(sMesh->mFaces.size() * 3);
std::vector<aiVector2D> vNew2;
// TODO: Remove this step. By maintaining a small LUT it
// would be possible to do this directly in the parsing step
unsigned int iBase = 0;
if (0 != sMesh->mTexCoords.size())
{
vNew2.resize(sMesh->mFaces.size() * 3);
for (unsigned int i = 0; i < sMesh->mFaces.size();++i)
{
// position and texture coordinates
vNew[iBase] = sMesh->mPositions[sMesh->mFaces[i].i1];
vNew2[iBase] = sMesh->mTexCoords[sMesh->mFaces[i].i1];
sMesh->mFaces[i].i1 = iBase++;
vNew[iBase] = sMesh->mPositions[sMesh->mFaces[i].i2];
vNew2[iBase] = sMesh->mTexCoords[sMesh->mFaces[i].i2];
sMesh->mFaces[i].i2 = iBase++;
vNew[iBase] = sMesh->mPositions[sMesh->mFaces[i].i3];
vNew2[iBase] = sMesh->mTexCoords[sMesh->mFaces[i].i3];
sMesh->mFaces[i].i3 = iBase++;
}
}
else
{
for (unsigned int i = 0; i < sMesh->mFaces.size();++i)
{
// position only
vNew[iBase] = sMesh->mPositions[sMesh->mFaces[i].i1];
sMesh->mFaces[i].i1 = iBase++;
vNew[iBase] = sMesh->mPositions[sMesh->mFaces[i].i2];
sMesh->mFaces[i].i2 = iBase++;
vNew[iBase] = sMesh->mPositions[sMesh->mFaces[i].i3];
sMesh->mFaces[i].i3 = iBase++;
}
}
sMesh->mPositions = vNew;
sMesh->mTexCoords = vNew2;
return;
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::ConvertMaterial(Dot3DS::Material& oldMat,
MaterialHelper& mat)
{
// NOTE: Pass the background image to the viewer by bypassing the
// material system. This is an evil hack, never do it again!
if (0 != this->mBackgroundImage.length() && this->bHasBG)
{
aiString tex;
tex.Set( this->mBackgroundImage);
mat.AddProperty( &tex, AI_MATKEY_GLOBAL_BACKGROUND_IMAGE);
// be sure this is only done for the first material
this->mBackgroundImage = std::string("");
}
// At first add the base ambient color of the
// scene to the material
oldMat.mAmbient.r += this->mClrAmbient.r;
oldMat.mAmbient.g += this->mClrAmbient.g;
oldMat.mAmbient.b += this->mClrAmbient.b;
aiString name;
name.Set( oldMat.mName);
mat.AddProperty( &name, AI_MATKEY_NAME);
// material colors
mat.AddProperty( &oldMat.mAmbient, 1, AI_MATKEY_COLOR_AMBIENT);
mat.AddProperty( &oldMat.mDiffuse, 1, AI_MATKEY_COLOR_DIFFUSE);
mat.AddProperty( &oldMat.mSpecular, 1, AI_MATKEY_COLOR_SPECULAR);
mat.AddProperty( &oldMat.mSpecularExponent, 1, AI_MATKEY_SHININESS);
mat.AddProperty( &oldMat.mEmissive, 1, AI_MATKEY_COLOR_EMISSIVE);
// opacity
mat.AddProperty<float>( &oldMat.mTransparency,1,AI_MATKEY_OPACITY);
// bump height scaling
mat.AddProperty<float>( &oldMat.mBumpHeight,1,AI_MATKEY_BUMPSCALING);
// shading mode
aiShadingMode eShading = aiShadingMode_NoShading;
switch (oldMat.mShading)
{
case Dot3DS::Dot3DSFile::Flat:
eShading = aiShadingMode_Flat; break;
case Dot3DS::Dot3DSFile::Phong :
eShading = aiShadingMode_Phong; break;
// I don't know what "Wire" shading should be,
// assume it is simple lambertian diffuse (L dot N) shading
case Dot3DS::Dot3DSFile::Wire:
case Dot3DS::Dot3DSFile::Gouraud:
eShading = aiShadingMode_Gouraud; break;
// assume cook-torrance shading for metals.
// NOTE: I assume the real shader inside 3ds max is an anisotropic
// Phong-Blinn shader, but this is a good approximation too
case Dot3DS::Dot3DSFile::Metal :
eShading = aiShadingMode_CookTorrance; break;
}
mat.AddProperty<int>( (int*)&eShading,1,AI_MATKEY_SHADING_MODEL);
// texture, if there is one
if( oldMat.sTexDiffuse.mMapName.length() > 0)
{
aiString tex;
tex.Set( oldMat.sTexDiffuse.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE_DIFFUSE(0));
mat.AddProperty<float>( &oldMat.sTexDiffuse.mTextureBlend, 1, AI_MATKEY_TEXBLEND_DIFFUSE(0));
}
if( oldMat.sTexSpecular.mMapName.length() > 0)
{
aiString tex;
tex.Set( oldMat.sTexSpecular.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE_SPECULAR(0));
mat.AddProperty<float>( &oldMat.sTexSpecular.mTextureBlend, 1, AI_MATKEY_TEXBLEND_SPECULAR(0));
}
if( oldMat.sTexOpacity.mMapName.length() > 0)
{
aiString tex;
tex.Set( oldMat.sTexOpacity.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE_OPACITY(0));
mat.AddProperty<float>( &oldMat.sTexOpacity.mTextureBlend, 1,AI_MATKEY_TEXBLEND_OPACITY(0));
}
if( oldMat.sTexEmissive.mMapName.length() > 0)
{
aiString tex;
tex.Set( oldMat.sTexEmissive.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE_EMISSIVE(0));
mat.AddProperty<float>( &oldMat.sTexEmissive.mTextureBlend, 1, AI_MATKEY_TEXBLEND_EMISSIVE(0));
}
if( oldMat.sTexBump.mMapName.length() > 0)
{
aiString tex;
tex.Set( oldMat.sTexBump.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE_BUMP(0));
mat.AddProperty<float>( &oldMat.sTexBump.mTextureBlend, 1, AI_MATKEY_TEXBLEND_BUMP(0));
}
if( oldMat.sTexShininess.mMapName.length() > 0)
{
aiString tex;
tex.Set( oldMat.sTexShininess.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE_SHININESS(0));
mat.AddProperty<float>( &oldMat.sTexBump.mTextureBlend, 1, AI_MATKEY_TEXBLEND_SHININESS(0));
}
// store the name of the material itself, too
if( oldMat.mName.length() > 0)
{
aiString tex;
tex.Set( oldMat.mName);
mat.AddProperty( &tex, AI_MATKEY_NAME);
}
return;
}
// ------------------------------------------------------------------------------------------------
void SetupMatUVSrc (aiMaterial* pcMat, const Dot3DS::Material* pcMatIn)
{
MaterialHelper* pcHelper = (MaterialHelper*)pcMat;
pcHelper->AddProperty<int>(&pcMatIn->sTexDiffuse.iUVSrc,1,AI_MATKEY_UVWSRC_DIFFUSE(0));
pcHelper->AddProperty<int>(&pcMatIn->sTexSpecular.iUVSrc,1,AI_MATKEY_UVWSRC_SPECULAR(0));
pcHelper->AddProperty<int>(&pcMatIn->sTexEmissive.iUVSrc,1,AI_MATKEY_UVWSRC_EMISSIVE(0));
pcHelper->AddProperty<int>(&pcMatIn->sTexBump.iUVSrc,1,AI_MATKEY_UVWSRC_BUMP(0));
pcHelper->AddProperty<int>(&pcMatIn->sTexShininess.iUVSrc,1,AI_MATKEY_UVWSRC_SHININESS(0));
pcHelper->AddProperty<int>(&pcMatIn->sTexOpacity.iUVSrc,1,AI_MATKEY_UVWSRC_OPACITY(0));
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::ConvertMeshes(aiScene* pcOut)
{
std::vector<aiMesh*> avOutMeshes;
avOutMeshes.reserve(this->mScene->mMeshes.size() * 2);
unsigned int iFaceCnt = 0;
// we need to split all meshes by their materials
for (std::vector<Dot3DS::Mesh>::iterator
i = this->mScene->mMeshes.begin();
i != this->mScene->mMeshes.end();++i)
{
std::vector<unsigned int>* aiSplit = new std::vector<unsigned int>[
this->mScene->mMaterials.size()];
unsigned int iNum = 0;
for (std::vector<unsigned int>::const_iterator
a = (*i).mFaceMaterials.begin();
a != (*i).mFaceMaterials.end();++a,++iNum)
{
// check range
if ((*a) >= this->mScene->mMaterials.size())
{
// use the last material instead
aiSplit[this->mScene->mMaterials.size()-1].push_back(iNum);
}
else aiSplit[*a].push_back(iNum);
}
// now generate submeshes
#if 0
bool bFirst = true;
#endif
for (unsigned int p = 0; p < this->mScene->mMaterials.size();++p)
{
if (aiSplit[p].size() != 0)
{
aiMesh* p_pcOut = new aiMesh();
// be sure to setup the correct material index
p_pcOut->mMaterialIndex = p;
// use the color data as temporary storage
p_pcOut->mColors[0] = (aiColor4D*)new std::string((*i).mName);
avOutMeshes.push_back(p_pcOut);
#if 0
if (bFirst)
{
p_pcOut->mColors[1] = (aiColor4D*)new aiMatrix4x4();
*((aiMatrix4x4*)p_pcOut->mColors[1]) = (*i).mMat;
bFirst = false;
}
#endif
// convert vertices
p_pcOut->mNumVertices = aiSplit[p].size()*3;
p_pcOut->mNumFaces = aiSplit[p].size();
iFaceCnt += p_pcOut->mNumFaces;
if (p_pcOut->mNumVertices != 0)
{
p_pcOut->mVertices = new aiVector3D[p_pcOut->mNumVertices];
p_pcOut->mNormals = new aiVector3D[p_pcOut->mNumVertices];
unsigned int iBase = 0;
p_pcOut->mFaces = new aiFace[p_pcOut->mNumFaces];
for (unsigned int q = 0; q < aiSplit[p].size();++q)
{
unsigned int iIndex = aiSplit[p][q];
p_pcOut->mFaces[q].mIndices = new unsigned int[3];
p_pcOut->mFaces[q].mNumIndices = 3;
p_pcOut->mFaces[q].mIndices[0] = iBase;
p_pcOut->mVertices[iBase] = (*i).mPositions[(*i).mFaces[iIndex].i1];
p_pcOut->mNormals[iBase++] = (*i).mNormals[(*i).mFaces[iIndex].i1];
p_pcOut->mFaces[q].mIndices[1] = iBase;
p_pcOut->mVertices[iBase] = (*i).mPositions[(*i).mFaces[iIndex].i2];
p_pcOut->mNormals[iBase++] = (*i).mNormals[(*i).mFaces[iIndex].i2];
p_pcOut->mFaces[q].mIndices[2] = iBase;
p_pcOut->mVertices[iBase] = (*i).mPositions[(*i).mFaces[iIndex].i3];
p_pcOut->mNormals[iBase++] = (*i).mNormals[(*i).mFaces[iIndex].i3];
}
}
// convert texture coordinates
if ((*i).mTexCoords.size() != 0)
{
p_pcOut->mTextureCoords[0] = new aiVector3D[p_pcOut->mNumVertices];
unsigned int iBase = 0;
for (unsigned int q = 0; q < aiSplit[p].size();++q)
{
unsigned int iIndex2 = aiSplit[p][q];
unsigned int iIndex = (*i).mFaces[iIndex2].i1;
aiVector2D& pc = (*i).mTexCoords[iIndex];
p_pcOut->mTextureCoords[0][iBase++] = aiVector3D(pc.x,pc.y,0.0f);
iIndex = (*i).mFaces[iIndex2].i2;
pc = (*i).mTexCoords[iIndex];
p_pcOut->mTextureCoords[0][iBase++] = aiVector3D(pc.x,pc.y,0.0f);
iIndex = (*i).mFaces[iIndex2].i3;
pc = (*i).mTexCoords[iIndex];
p_pcOut->mTextureCoords[0][iBase++] = aiVector3D(pc.x,pc.y,0.0f);
}
// apply texture coordinate scalings
this->BakeScaleNOffset ( p_pcOut, &this->mScene->mMaterials[
p_pcOut->mMaterialIndex] );
// setup bitflags to indicate which texture coordinate
// channels are used
p_pcOut->mNumUVComponents[0] = 2;
if (p_pcOut->HasTextureCoords(1))
p_pcOut->mNumUVComponents[1] = 2;
if (p_pcOut->HasTextureCoords(2))
p_pcOut->mNumUVComponents[2] = 2;
if (p_pcOut->HasTextureCoords(3))
p_pcOut->mNumUVComponents[3] = 2;
}
}
}
delete[] aiSplit;
}
pcOut->mNumMeshes = avOutMeshes.size();
pcOut->mMeshes = new aiMesh*[pcOut->mNumMeshes]();
for (unsigned int a = 0; a < pcOut->mNumMeshes;++a)
{
pcOut->mMeshes[a] = avOutMeshes[a];
}
if (0 == iFaceCnt)
{
throw new ImportErrorException("No faces loaded. The mesh is empty");
}
// for each material in the scene we need to setup the UV source
// set for each texture
for (unsigned int a = 0; a < pcOut->mNumMaterials;++a)
{
SetupMatUVSrc( pcOut->mMaterials[a], &this->mScene->mMaterials[a] );
}
return;
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::AddNodeToGraph(aiScene* pcSOut,aiNode* pcOut,Dot3DS::Node* pcIn)
{
// find the corresponding mesh indices
std::vector<unsigned int> iArray;
if (pcIn->mName != "$$$DUMMY")
{
for (unsigned int a = 0; a < pcSOut->mNumMeshes;++a)
{
if (0 == ASSIMP_stricmp(pcIn->mName.c_str(),
((std::string*)pcSOut->mMeshes[a]->mColors[0])->c_str()))
{
iArray.push_back(a);
}
}
}
pcOut->mName.Set(pcIn->mName);
pcOut->mNumMeshes = iArray.size();
pcOut->mMeshes = new unsigned int[iArray.size()];
for (unsigned int i = 0;i < iArray.size();++i)
{
const unsigned int iIndex = iArray[i];
#if 0
if (NULL != pcSOut->mMeshes[iIndex]->mColors[1])
{
pcOut->mTransformation = *((aiMatrix4x4*)
(pcSOut->mMeshes[iIndex]->mColors[1]));
delete (aiMatrix4x4*)pcSOut->mMeshes[iIndex]->mColors[1];
pcSOut->mMeshes[iIndex]->mColors[1] = NULL;
}
#endif
pcOut->mMeshes[i] = iIndex;
}
// NOTE: Not necessary. We can use the given transformation matrix.
// However, we'd need it if we wanted to implement keyframe animation
#if 0
// build the scaling matrix. Toggle y and z axis
aiMatrix4x4 mS;
mS.a1 = pcIn->vScaling.x;
mS.b2 = pcIn->vScaling.z;
mS.c3 = pcIn->vScaling.y;
// build the translation matrix. Toggle y and z axis
aiMatrix4x4 mT;
mT.a4 = pcIn->vPosition.x;
mT.b4 = pcIn->vPosition.z;
mT.c4 = pcIn->vPosition.y;
// build the pivot matrix. Toggle y and z axis
aiMatrix4x4 mP;
mP.a4 = pcIn->vPivot.x;
mP.b4 = pcIn->vPivot.z;
mP.c4 = pcIn->vPivot.y;
#endif
pcOut->mTransformation = aiMatrix4x4(); // mT * pcIn->mRotation * mS * mP * pcOut->mTransformation.Inverse();
pcOut->mNumChildren = pcIn->mChildren.size();
pcOut->mChildren = new aiNode*[pcIn->mChildren.size()];
for (unsigned int i = 0; i < pcIn->mChildren.size();++i)
{
pcOut->mChildren[i] = new aiNode();
pcOut->mChildren[i]->mParent = pcOut;
AddNodeToGraph(pcSOut,pcOut->mChildren[i],
pcIn->mChildren[i]);
}
return;
}
// ------------------------------------------------------------------------------------------------
inline bool HasUVTransform(const Dot3DS::Texture& rcIn)
{
return (0.0f != rcIn.mOffsetU ||
0.0f != rcIn.mOffsetV ||
1.0f != rcIn.mScaleU ||
1.0f != rcIn.mScaleV ||
0.0f != rcIn.mRotation);
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::ApplyScaleNOffset()
{
unsigned int iNum = 0;
for (std::vector<Dot3DS::Material>::iterator
i = this->mScene->mMaterials.begin();
i != this->mScene->mMaterials.end();++i,++iNum)
{
unsigned int iCnt = 0;
Dot3DS::Texture* pcTexture = NULL;
if (HasUVTransform((*i).sTexDiffuse))
{
(*i).sTexDiffuse.bPrivate = true;
pcTexture = &(*i).sTexDiffuse;
++iCnt;
}
if (HasUVTransform((*i).sTexSpecular))
{
(*i).sTexSpecular.bPrivate = true;
pcTexture = &(*i).sTexSpecular;
++iCnt;
}
if (HasUVTransform((*i).sTexOpacity))
{
(*i).sTexOpacity.bPrivate = true;
pcTexture = &(*i).sTexOpacity;
++iCnt;
}
if (HasUVTransform((*i).sTexEmissive))
{
(*i).sTexEmissive.bPrivate = true;
pcTexture = &(*i).sTexEmissive;
++iCnt;
}
if (HasUVTransform((*i).sTexBump))
{
(*i).sTexBump.bPrivate = true;
pcTexture = &(*i).sTexBump;
++iCnt;
}
if (HasUVTransform((*i).sTexShininess))
{
(*i).sTexShininess.bPrivate = true;
pcTexture = &(*i).sTexShininess;
++iCnt;
}
if (0 != iCnt)
{
// if only one texture needs scaling/offset operations
// we can apply them directly to the first texture
// coordinate sets of all meshes referencing *this* material
// However, we can't do it now. We need to wait until
// everything is sorted by materials.
if (1 == iCnt)
{
(*i).iBakeUVTransform = 1;
(*i).pcSingleTexture = pcTexture;
}
// we will need to generate a separate new texture channel
// for each texture.
// However, we can't do it now. We need to wait until
// everything is sorted by materials.
else (*i).iBakeUVTransform = 2;
}
}
}
// ------------------------------------------------------------------------------------------------
struct STransformVecInfo
{
float fScaleU;
float fScaleV;
float fOffsetU;
float fOffsetV;
float fRotation;
std::vector<Dot3DS::Texture*> pcTextures;
};
// ------------------------------------------------------------------------------------------------
void AddToList(std::vector<STransformVecInfo>& rasVec,Dot3DS::Texture* pcTex)
{
if (0 == pcTex->mMapName.length())return;
for (std::vector<STransformVecInfo>::iterator
i = rasVec.begin();
i != rasVec.end();++i)
{
if ((*i).fOffsetU == pcTex->mOffsetU &&
(*i).fOffsetV == pcTex->mOffsetV &&
(*i).fScaleU == pcTex->mScaleU &&
(*i).fScaleV == pcTex->mScaleV &&
(*i).fRotation == pcTex->mRotation)
{
(*i).pcTextures.push_back(pcTex);
return;
}
}
STransformVecInfo sInfo;
sInfo.fScaleU = pcTex->mScaleU;
sInfo.fScaleV = pcTex->mScaleV;
sInfo.fOffsetU = pcTex->mOffsetU;
sInfo.fOffsetV = pcTex->mOffsetV;
sInfo.fRotation = pcTex->mRotation;
sInfo.pcTextures.push_back(pcTex);
rasVec.push_back(sInfo);
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::BakeScaleNOffset(
aiMesh* pcMesh, Dot3DS::Material* pcSrc)
{
if (!pcMesh->mTextureCoords[0])return;
if (1 == pcSrc->iBakeUVTransform)
{
if (0.0f == pcSrc->pcSingleTexture->mRotation)
{
for (unsigned int i = 0; i < pcMesh->mNumVertices;++i)
{
pcMesh->mTextureCoords[0][i].x *= pcSrc->pcSingleTexture->mScaleU;
pcMesh->mTextureCoords[0][i].y *= pcSrc->pcSingleTexture->mScaleV;
pcMesh->mTextureCoords[0][i].x += pcSrc->pcSingleTexture->mOffsetU;
pcMesh->mTextureCoords[0][i].y += pcSrc->pcSingleTexture->mOffsetV;
}
}
else
{
const float fSin = sinf(pcSrc->pcSingleTexture->mRotation);
const float fCos = cosf(pcSrc->pcSingleTexture->mRotation);
for (unsigned int i = 0; i < pcMesh->mNumVertices;++i)
{
pcMesh->mTextureCoords[0][i].x *= pcSrc->pcSingleTexture->mScaleU;
pcMesh->mTextureCoords[0][i].y *= pcSrc->pcSingleTexture->mScaleV;
pcMesh->mTextureCoords[0][i].x *= fCos;
pcMesh->mTextureCoords[0][i].y *= fSin;
pcMesh->mTextureCoords[0][i].x += pcSrc->pcSingleTexture->mOffsetU;
pcMesh->mTextureCoords[0][i].y += pcSrc->pcSingleTexture->mOffsetV;
}
}
}
else if (2 == pcSrc->iBakeUVTransform)
{
// now we need to find all textures in the material
// which require scaling/offset operations
std::vector<STransformVecInfo> sOps;
AddToList(sOps,&pcSrc->sTexDiffuse);
AddToList(sOps,&pcSrc->sTexSpecular);
AddToList(sOps,&pcSrc->sTexEmissive);
AddToList(sOps,&pcSrc->sTexOpacity);
AddToList(sOps,&pcSrc->sTexBump);
AddToList(sOps,&pcSrc->sTexShininess);
const aiVector3D* _pvBase;
if (0.0f == sOps[0].fOffsetU && 0.0f == sOps[0].fOffsetV &&
1.0f == sOps[0].fScaleU && 1.0f == sOps[0].fScaleV &&
0.0f == sOps[0].fRotation)
{
// we'll have an unmodified set, so we can use *this* one
_pvBase = pcMesh->mTextureCoords[0];
}
else
{
_pvBase = new aiVector3D[pcMesh->mNumVertices];
memcpy(const_cast<aiVector3D*>(_pvBase),pcMesh->mTextureCoords[0],
pcMesh->mNumVertices * sizeof(aiVector3D));
}
unsigned int iCnt = 0;
for (std::vector<STransformVecInfo>::iterator
i = sOps.begin();
i != sOps.end();++i,++iCnt)
{
if (!pcMesh->mTextureCoords[iCnt])
{
pcMesh->mTextureCoords[iCnt] = new aiVector3D[pcMesh->mNumVertices];
}
// more than 4 UV texture channels are not available
if (iCnt > 3)
{
for (std::vector<Dot3DS::Texture*>::iterator
a = (*i).pcTextures.begin();
a != (*i).pcTextures.end();++a)
{
(*a)->iUVSrc = 0;
}
continue;
}
const aiVector3D* pvBase = _pvBase;
if (0.0f == (*i).fRotation)
{
for (unsigned int n = 0; n < pcMesh->mNumVertices;++n)
{
pcMesh->mTextureCoords[iCnt][n].x = pvBase->x * (*i).fScaleU;
pcMesh->mTextureCoords[iCnt][n].y = pvBase->y * (*i).fScaleV;
pcMesh->mTextureCoords[iCnt][n].x += (*i).fOffsetU;
pcMesh->mTextureCoords[iCnt][n].y += (*i).fOffsetV;
pvBase++;
}
}
else
{
const float fSin = sinf((*i).fRotation);
const float fCos = cosf((*i).fRotation);
for (unsigned int n = 0; n < pcMesh->mNumVertices;++n)
{
pcMesh->mTextureCoords[iCnt][n].x = pvBase->x * (*i).fScaleU;
pcMesh->mTextureCoords[iCnt][n].y = pvBase->y * (*i).fScaleV;
pcMesh->mTextureCoords[iCnt][n].x *= fCos;
pcMesh->mTextureCoords[iCnt][n].y *= fSin;
pcMesh->mTextureCoords[iCnt][n].x += (*i).fOffsetU;
pcMesh->mTextureCoords[iCnt][n].y += (*i).fOffsetV;
pvBase++;
}
}
// setup UV source
for (std::vector<Dot3DS::Texture*>::iterator
a = (*i).pcTextures.begin();
a != (*i).pcTextures.end();++a)
{
(*a)->iUVSrc = iCnt;
}
}
// release temporary storage
if (_pvBase != pcMesh->mTextureCoords[0])
delete[] _pvBase;
}
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::GenerateNodeGraph(aiScene* pcOut)
{
pcOut->mRootNode = new aiNode();
if (0 == this->mRootNode->mChildren.size())
{
// seems the file has not even a hierarchy.
// generate a flat hiearachy which looks like this:
//
// ROOT_NODE
// |
// ----------------------------------------
// | | | |
// MESH_0 MESH_1 MESH_2 ... MESH_N
//
unsigned int iCnt = 0;
pcOut->mRootNode->mNumChildren = pcOut->mNumMeshes;
pcOut->mRootNode->mChildren = new aiNode* [ pcOut->mNumMeshes ];
for (unsigned int i = 0; i < pcOut->mNumMeshes;++i)
{
aiNode* pcNode = new aiNode();
pcNode->mParent = pcOut->mRootNode;
pcNode->mNumChildren = 0;
pcNode->mChildren = 0;
pcNode->mMeshes = new unsigned int[1];
pcNode->mMeshes[0] = i;
pcNode->mNumMeshes = 1;
pcNode->mName.Set("UNNAMED");
// add the new child to the parent node
pcOut->mRootNode->mChildren[i] = pcNode;
}
}
else this->AddNodeToGraph(pcOut, pcOut->mRootNode, this->mRootNode);
for (unsigned int a = 0; a < pcOut->mNumMeshes;++a)
{
delete (std::string*)pcOut->mMeshes[a]->mColors[0];
pcOut->mMeshes[a]->mColors[0] = NULL;
// may be NULL
delete (aiMatrix4x4*)pcOut->mMeshes[a]->mColors[1];
pcOut->mMeshes[a]->mColors[1] = NULL;
}
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::ConvertScene(aiScene* pcOut)
{
pcOut->mNumMaterials = this->mScene->mMaterials.size();
pcOut->mMaterials = new aiMaterial*[pcOut->mNumMaterials];
for (unsigned int i = 0; i < pcOut->mNumMaterials;++i)
{
MaterialHelper* pcNew = new MaterialHelper();
this->ConvertMaterial(this->mScene->mMaterials[i],*pcNew);
pcOut->mMaterials[i] = pcNew;
}
this->ConvertMeshes(pcOut);
return;
}
// ------------------------------------------------------------------------------------------------
void Dot3DSImporter::GenTexCoord (Dot3DS::Texture* pcTexture,
const std::vector<aiVector2D>& p_vIn,
std::vector<aiVector2D>& p_vOut)
{
p_vOut.resize(p_vIn.size());
std::vector<aiVector2D>::const_iterator i = p_vIn.begin();
std::vector<aiVector2D>::iterator a = p_vOut.begin();
for(;i != p_vOut.end();++i,++a)
{
// TODO: Find out in which order 3ds max is performing
// scaling and translation. However it seems reasonable to
// scale first.
//
// TODO: http://www.jalix.org/ressources/graphics/3DS/_specifications/3ds-0.1.htm
// says it is not u and v scale but 1/u and 1/v scale. Other sources
// tell different things. Believe this one, the author seems to be funny
// or drunken or both ;-)
(*a) = (*i);
(*a).x /= pcTexture->mScaleU;
(*a).y /= pcTexture->mScaleV;
(*a).x += pcTexture->mOffsetU;
(*a).y += pcTexture->mOffsetV;
}
return;
}
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