Hi Robert,
"
Added options to the FBX writer: an ascii/binary switch, and the ability to
select FBX version as the SDK handles it (Ex: "FBX201300").
This allows the user to achieve backward compatibility, and debug format issues
using text output.
"
Base revision: SVN trunk 14422 / 381c1b73cdd94ef0f81f77ea3fb1ee4c1ae378d9 (=
the same as my previous subission)
Cheers,
--
Sukender
#include <sstream>
#include <memory>
#ifndef WIN32
#include <strings.h>//for strncasecmp
#endif
#include <osg/Notify>
#include <osg/MatrixTransform>
#include <osg/Material>
#include <osg/PositionAttitudeTransform>
#include <osg/Texture2D>
#include <osg/Version>
#include <osgDB/ConvertUTF>
#include <osgDB/FileNameUtils>
#include <osgDB/FileUtils>
#include <osgDB/ReadFile>
#include <osgDB/Registry>
#include <osgAnimation/AnimationManagerBase>
#include <osgAnimation/Bone>
#include <osgAnimation/RigGeometry>
#include <osgAnimation/Skeleton>
#include <osgAnimation/VertexInfluence>
#if defined(_MSC_VER)
#pragma warning( disable : 4505 )
#pragma warning( default : 4996 )
#endif
#include <fbxsdk.h>
#include "ReaderWriterFBX.h"
#include "fbxReader.h"
#include "WriterNodeVisitor.h"
/// Returns true if the given node is a basic root group with no special information.
/// Used in conjunction with UseFbxRoot option.
/// Identity transforms are considered as basic root nodes.
bool isBasicRootNode(const osg::Node& node)
{
const osg::Group* osgGroup = node.asGroup();
if (!osgGroup)
{
// Geodes & such are not basic root nodes
return false;
}
// Test if we've got an empty transform (= a group!)
const osg::Transform* transform = osgGroup->asTransform();
if (transform)
{
if (const osg::MatrixTransform* matrixTransform = transform->asMatrixTransform())
{
if (!matrixTransform->getMatrix().isIdentity())
{
// Non-identity matrix transform
return false;
}
}
else if (const osg::PositionAttitudeTransform* pat = transform->asPositionAttitudeTransform())
{
if (pat->getPosition() != osg::Vec3d() ||
pat->getAttitude() != osg::Quat() ||
pat->getScale() != osg::Vec3d(1.0f, 1.0f, 1.0f) ||
pat->getPivotPoint() != osg::Vec3d())
{
// Non-identity position attribute transform
return false;
}
}
else
{
// Other transform (not identity or not predefined type)
return false;
}
}
// Test the presence of a non-empty stateset
if (node.getStateSet())
{
osg::ref_ptr<osg::StateSet> emptyStateSet = new osg::StateSet;
if (node.getStateSet()->compare(*emptyStateSet, true) != 0)
{
return false;
}
}
return true;
}
class CleanUpFbx
{
FbxManager* m_pSdkManager;
public:
explicit CleanUpFbx(FbxManager* pSdkManager) : m_pSdkManager(pSdkManager)
{}
~CleanUpFbx()
{
m_pSdkManager->Destroy();
}
};
//Some files don't correctly mark their skeleton nodes, so this function infers
//them from the nodes that skin deformers linked to.
void findLinkedFbxSkeletonNodes(FbxNode* pNode, std::set<const FbxNode*>& fbxSkeletons)
{
if (const FbxGeometry* pMesh = FbxCast<FbxGeometry>(pNode->GetNodeAttribute()))
{
for (int i = 0; i < pMesh->GetDeformerCount(FbxDeformer::eSkin); ++i)
{
const FbxSkin* pSkin = (const FbxSkin*)pMesh->GetDeformer(i, FbxDeformer::eSkin);
for (int j = 0; j < pSkin->GetClusterCount(); ++j)
{
const FbxNode* pSkeleton = pSkin->GetCluster(j)->GetLink();
fbxSkeletons.insert(pSkeleton);
}
}
}
for (int i = 0; i < pNode->GetChildCount(); ++i)
{
findLinkedFbxSkeletonNodes(pNode->GetChild(i), fbxSkeletons);
}
}
void resolveBindMatrices(
osg::Node& root,
const BindMatrixMap& boneBindMatrices,
const std::map<FbxNode*, osg::Node*>& nodeMap)
{
std::set<std::string> nodeNames;
for (std::map<FbxNode*, osg::Node*>::const_iterator it = nodeMap.begin(); it != nodeMap.end(); ++it)
{
nodeNames.insert(it->second->getName());
}
for (BindMatrixMap::const_iterator it = boneBindMatrices.begin();
it != boneBindMatrices.end();)
{
FbxNode* const fbxBone = it->first.first;
std::map<FbxNode*, osg::Node*>::const_iterator nodeIt = nodeMap.find(fbxBone);
if (nodeIt != nodeMap.end())
{
const osg::Matrix bindMatrix = it->second;
osgAnimation::Bone& osgBone = dynamic_cast<osgAnimation::Bone&>(*nodeIt->second);
osgBone.setInvBindMatrixInSkeletonSpace(bindMatrix);
++it;
for (; it != boneBindMatrices.end() && it->first.first == fbxBone; ++it)
{
if (it->second != bindMatrix)
{
std::string name;
for (int i = 0;; ++i)
{
std::stringstream ss;
ss << osgBone.getName() << '_' << i;
name = ss.str();
if (nodeNames.insert(name).second)
{
break;
}
}
osgAnimation::Bone* newBone = new osgAnimation::Bone(name);
newBone->setDefaultUpdateCallback();
newBone->setInvBindMatrixInSkeletonSpace(it->second);
osgBone.addChild(newBone);
osgAnimation::RigGeometry* pRigGeometry = it->first.second;
osgAnimation::VertexInfluenceMap* vertexInfluences = pRigGeometry->getInfluenceMap();
osgAnimation::VertexInfluenceMap::iterator vimIt = vertexInfluences->find(osgBone.getName());
if (vimIt != vertexInfluences->end())
{
osgAnimation::VertexInfluence vi;
vi.swap(vimIt->second);
vertexInfluences->erase(vimIt);
osgAnimation::VertexInfluence& vi2 = (*vertexInfluences)[name];
vi.swap(vi2);
vi2.setName(name);
}
else
{
OSG_WARN << "No vertex influences found for \"" << osgBone.getName() << "\"" << std::endl;
}
}
}
}
else
{
OSG_WARN << "No bone found for \"" << fbxBone->GetName() << "\"" << std::endl;
++it;
}
}
}
osgDB::ReaderWriter::ReadResult
ReaderWriterFBX::readNode(const std::string& filenameInit,
const Options* options) const
{
try
{
std::string ext(osgDB::getLowerCaseFileExtension(filenameInit));
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
std::string filename(osgDB::findDataFile(filenameInit, options));
if (filename.empty()) return ReadResult::FILE_NOT_FOUND;
FbxManager* pSdkManager = FbxManager::Create();
if (!pSdkManager)
{
return ReadResult::ERROR_IN_READING_FILE;
}
CleanUpFbx cleanUpFbx(pSdkManager);
pSdkManager->SetIOSettings(FbxIOSettings::Create(pSdkManager, IOSROOT));
FbxScene* pScene = FbxScene::Create(pSdkManager, "");
// The FBX SDK interprets the filename as UTF-8
#ifdef OSG_USE_UTF8_FILENAME
const std::string& utf8filename(filename);
#else
std::string utf8filename(osgDB::convertStringFromCurrentCodePageToUTF8(filename));
#endif
FbxImporter* lImporter = FbxImporter::Create(pSdkManager, "");
if (!lImporter->Initialize(utf8filename.c_str(), -1, pSdkManager->GetIOSettings()))
{
#if FBXSDK_VERSION_MAJOR < 2014
return std::string(lImporter->GetLastErrorString());
#else
return std::string(lImporter->GetStatus().GetErrorString());
#endif
}
if (!lImporter->IsFBX())
{
return ReadResult::ERROR_IN_READING_FILE;
}
for (int i = 0; FbxTakeInfo* lTakeInfo = lImporter->GetTakeInfo(i); i++)
{
lTakeInfo->mSelect = true;
}
if (!lImporter->Import(pScene))
{
#if FBXSDK_VERSION_MAJOR < 2014
return std::string(lImporter->GetLastErrorString());
#else
return std::string(lImporter->GetStatus().GetErrorString());
#endif
}
//FbxAxisSystem::OpenGL.ConvertScene(pScene); // Doesn't work as expected. Still need to transform vertices.
if (FbxNode* pNode = pScene->GetRootNode())
{
bool useFbxRoot = false;
bool lightmapTextures = false;
bool tessellatePolygons = false;
bool zUp = false;
if (options)
{
std::istringstream iss(options->getOptionString());
std::string opt;
while (iss >> opt)
{
if (opt == "UseFbxRoot")
{
useFbxRoot = true;
}
if (opt == "LightmapTextures")
{
lightmapTextures = true;
}
if (opt == "TessellatePolygons")
{
tessellatePolygons = true;
}
if (opt == "ZUp")
{
zUp = true;
}
}
}
bool bIsBone = false;
int nLightCount = 0;
osg::ref_ptr<Options> localOptions = NULL;
if (options)
localOptions = options->cloneOptions();
else
localOptions = new osgDB::Options();
localOptions->setObjectCacheHint(osgDB::ReaderWriter::Options::CACHE_IMAGES);
std::string filePath = osgDB::getFilePath(filename);
FbxMaterialToOsgStateSet fbxMaterialToOsgStateSet(filePath, localOptions.get(), lightmapTextures);
std::set<const FbxNode*> fbxSkeletons;
findLinkedFbxSkeletonNodes(pNode, fbxSkeletons);
OsgFbxReader::AuthoringTool authoringTool = OsgFbxReader::UNKNOWN;
if (FbxDocumentInfo* pDocInfo = pScene->GetDocumentInfo())
{
struct ToolName
{
const char* name;
OsgFbxReader::AuthoringTool tool;
};
ToolName authoringTools[] = {
{"OpenSceneGraph", OsgFbxReader::OPENSCENEGRAPH},
{"3ds Max", OsgFbxReader::AUTODESK_3DSTUDIO_MAX}
};
FbxString appName = pDocInfo->LastSaved_ApplicationName.Get();
for (unsigned int i = 0; i < sizeof(authoringTools) / sizeof(authoringTools[0]); ++i)
{
if (0 ==
#ifdef WIN32
_strnicmp
#else
strncasecmp
#endif
(appName, authoringTools[i].name, strlen(authoringTools[i].name)))
{
authoringTool = authoringTools[i].tool;
break;
}
}
}
OsgFbxReader reader(*pSdkManager,
*pScene,
fbxMaterialToOsgStateSet,
fbxSkeletons,
*localOptions,
authoringTool,
lightmapTextures,
tessellatePolygons);
ReadResult res = reader.readFbxNode(pNode, bIsBone, nLightCount);
if (res.success())
{
fbxMaterialToOsgStateSet.checkInvertTransparency();
resolveBindMatrices(*res.getNode(), reader.boneBindMatrices, reader.nodeMap);
osg::Node* osgNode = res.getNode();
osgNode->getOrCreateStateSet()->setMode(GL_RESCALE_NORMAL,osg::StateAttribute::ON);
osgNode->getOrCreateStateSet()->setMode(GL_NORMALIZE,osg::StateAttribute::ON);
if (reader.pAnimationManager.valid())
{
if (osgNode->getUpdateCallback())
{
osg::Group* osgGroup = new osg::Group;
osgGroup->addChild(osgNode);
osgNode = osgGroup;
}
//because the animations may be altered after registering
reader.pAnimationManager->buildTargetReference();
osgNode->setUpdateCallback(reader.pAnimationManager.get());
}
FbxAxisSystem fbxAxis = pScene->GetGlobalSettings().GetAxisSystem();
// some reminder: http://www.realtimerendering.com/blog/left-handed-vs-right-handed-world-coordinates/
int upSign;
FbxAxisSystem::EUpVector eUp = fbxAxis.GetUpVector(upSign);
bool bLeftHanded = fbxAxis.GetCoorSystem() == FbxAxisSystem::eLeftHanded;
float fSign = upSign < 0 ? 1.0f : -1.0f;
float HorizSign = bLeftHanded ? -1.0f : 1.0f;
bool refCoordSysChange = false;
osg::Matrix mat;
if (zUp)
{
if (eUp != FbxAxisSystem::eZAxis || fSign != 1.0 || upSign != 1.0)
{
switch (eUp)
{
case FbxAxisSystem::eXAxis:
mat.set(0,fSign,0,0,-fSign,0,0,0,0,0,HorizSign,0,0,0,0,1);
break;
case FbxAxisSystem::eYAxis:
mat.set(1,0,0,0,0,0,-fSign*HorizSign,0,0,fSign,0,0,0,0,0,1);
break;
case FbxAxisSystem::eZAxis:
mat.set(1,0,0,0,0,fSign,0,0,0,0,fSign*HorizSign,0,0,0,0,1);
break;
}
refCoordSysChange = true;
}
}
else if (fbxAxis != FbxAxisSystem::OpenGL)
{
switch (eUp)
{
case FbxAxisSystem::eXAxis:
mat.set(0,fSign,0,0,-fSign,0,0,0,0,0,HorizSign,0,0,0,0,1);
break;
case FbxAxisSystem::eYAxis:
mat.set(1,0,0,0,0,fSign,0,0,0,0,fSign*HorizSign,0,0,0,0,1);
break;
case FbxAxisSystem::eZAxis:
mat.set(1,0,0,0,0,0,-fSign*HorizSign,0,0,fSign,0,0,0,0,0,1);
break;
}
refCoordSysChange = true;
}
if (refCoordSysChange)
{
osg::Transform* pTransformTemp = osgNode->asTransform();
osg::MatrixTransform* pMatrixTransform = pTransformTemp ?
pTransformTemp->asMatrixTransform() : NULL;
if (pMatrixTransform)
{
pMatrixTransform->setMatrix(pMatrixTransform->getMatrix() * mat);
}
else
{
pMatrixTransform = new osg::MatrixTransform(mat);
if (useFbxRoot && isBasicRootNode(*osgNode))
{
// If root node is a simple group, put all FBX elements under the OSG root
osg::Group* osgGroup = osgNode->asGroup();
for(unsigned int i = 0; i < osgGroup->getNumChildren(); ++i)
{
pMatrixTransform->addChild(osgGroup->getChild(i));
}
pMatrixTransform->setName(osgGroup->getName());
}
else
{
pMatrixTransform->addChild(osgNode);
}
}
osgNode = pMatrixTransform;
}
osgNode->setName(filenameInit);
return osgNode;
}
}
}
catch (...)
{
OSG_WARN << "Exception thrown while importing \"" << filenameInit << '\"' << std::endl;
}
return ReadResult::ERROR_IN_READING_FILE;
}
osgDB::ReaderWriter::WriteResult ReaderWriterFBX::writeNode(
const osg::Node& node,
const std::string& filename,
const Options* options) const
{
try
{
std::string ext = osgDB::getLowerCaseFileExtension(filename);
if (!acceptsExtension(ext)) return WriteResult::FILE_NOT_HANDLED;
osg::ref_ptr<Options> localOptions = options ?
static_cast<Options*>(options->clone(osg::CopyOp::SHALLOW_COPY)) : new Options;
localOptions->getDatabasePathList().push_front(osgDB::getFilePath(filename));
FbxManager* pSdkManager = FbxManager::Create();
if (!pSdkManager)
{
return WriteResult::ERROR_IN_WRITING_FILE;
}
CleanUpFbx cleanUpFbx(pSdkManager);
pSdkManager->SetIOSettings(FbxIOSettings::Create(pSdkManager, IOSROOT));
bool useFbxRoot = false;
bool ascii(false);
std::string exportVersion;
if (options)
{
std::istringstream iss(options->getOptionString());
std::string opt;
while (iss >> opt)
{
if (opt == "Embedded")
{
pSdkManager->GetIOSettings()->SetBoolProp(EXP_FBX_EMBEDDED, true);
}
else if (opt == "UseFbxRoot")
{
useFbxRoot = true;
}
else if (opt == "FBX-ASCII")
{
ascii = true;
}
else if (opt == "FBX-ExportVersion")
{
iss >> exportVersion;
}
}
}
FbxScene* pScene = FbxScene::Create(pSdkManager, "");
if (options)
{
if (options->getPluginData("FBX-AssetUnitMeter"))
{
float unit = *static_cast<const float*>(options->getPluginData("FBX-AssetUnitMeter"));
FbxSystemUnit kFbxSystemUnit(unit*100);
pScene->GetGlobalSettings().SetSystemUnit(kFbxSystemUnit);
}
}
pluginfbx::WriterNodeVisitor writerNodeVisitor(pScene, pSdkManager, filename,
options, osgDB::getFilePath(node.getName().empty() ? filename : node.getName()));
if (useFbxRoot && isBasicRootNode(node))
{
// If root node is a simple group, put all elements under the FBX root
const osg::Group * osgGroup = node.asGroup();
for (unsigned int child = 0; child < osgGroup->getNumChildren(); ++child)
{
const_cast<osg::Node *>(osgGroup->getChild(child))->accept(writerNodeVisitor);
}
}
else {
// Normal scene
const_cast<osg::Node&>(node).accept(writerNodeVisitor);
}
FbxDocumentInfo* pDocInfo = pScene->GetDocumentInfo();
bool needNewDocInfo = pDocInfo != NULL;
if (needNewDocInfo)
{
pDocInfo = FbxDocumentInfo::Create(pSdkManager, "");
}
pDocInfo->LastSaved_ApplicationName.Set(FbxString("OpenSceneGraph"));
pDocInfo->LastSaved_ApplicationVersion.Set(FbxString(osgGetVersion()));
if (needNewDocInfo)
{
pScene->SetDocumentInfo(pDocInfo);
}
FbxExporter* lExporter = FbxExporter::Create(pSdkManager, "");
pScene->GetGlobalSettings().SetAxisSystem(FbxAxisSystem::eOpenGL);
// Ensure the directory exists or else the FBX SDK will fail
if (!osgDB::makeDirectoryForFile(filename)) {
OSG_NOTICE << "Can't create directory for file '" << filename << "'. FBX SDK may fail creating the file." << std::endl;
}
// The FBX SDK interprets the filename as UTF-8
#ifdef OSG_USE_UTF8_FILENAME
const std::string& utf8filename(filename);
#else
std::string utf8filename(osgDB::convertStringFromCurrentCodePageToUTF8(filename));
#endif
// Output format selection. Here we only handle "recent" FBX, binary or ASCII.
// pSdkManager->GetIOPluginRegistry()->GetWriterFormatDescription() / GetReaderFormatCount() gives the following list:
//FBX binary (*.fbx)
//FBX ascii (*.fbx)
//FBX encrypted (*.fbx)
//FBX 6.0 binary (*.fbx)
//FBX 6.0 ascii (*.fbx)
//FBX 6.0 encrypted (*.fbx)
//AutoCAD DXF (*.dxf)
//Alias OBJ (*.obj)
//Collada DAE (*.dae)
//Biovision BVH (*.bvh)
//Motion Analysis HTR (*.htr)
//Motion Analysis TRC (*.trc)
//Acclaim ASF (*.asf)
int format = ascii ? pSdkManager->GetIOPluginRegistry()->FindWriterIDByDescription("FBX ascii (*.fbx)") : -1; // -1 = Default
if (!lExporter->Initialize(utf8filename.c_str(), format))
{
#if FBXSDK_VERSION_MAJOR < 2014
return std::string(lExporter->GetLastErrorString());
#else
return std::string(lExporter->GetStatus().GetErrorString());
#endif
}
if (!exportVersion.empty() && !lExporter->SetFileExportVersion(FbxString(exportVersion.c_str()), FbxSceneRenamer::eNone)) {
std::stringstream versionsStr;
char const * const * versions = lExporter->GetCurrentWritableVersions();
if (versions) for(; *versions; ++versions) versionsStr << " " << *versions;
OSG_WARN << "Can't set FBX export version to '" << exportVersion << "'. Using default. Available export versions are:" << versionsStr.str() << std::endl;
}
if (!lExporter->Export(pScene))
{
#if FBXSDK_VERSION_MAJOR < 2014
return std::string(lExporter->GetLastErrorString());
#else
return std::string(lExporter->GetStatus().GetErrorString());
#endif
}
return WriteResult::FILE_SAVED;
}
catch (const std::string& s)
{
return s;
}
catch (const char* s)
{
return std::string(s);
}
catch (...)
{
}
return WriteResult::ERROR_IN_WRITING_FILE;
}
///////////////////////////////////////////////////////////////////////////
// Add ourself to the Registry to instantiate the reader/writer.
REGISTER_OSGPLUGIN(fbx, ReaderWriterFBX)
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