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From Paul Cheyrou-Lagreze, "Attached is fix/feature for FBX osgplugins against latest trunk:

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- ReaderWriterFBX.cpp: add "z up scene axis" support:  FBX provides facility to convert model scene axis during conversion. Currently fbx plugin convert axis to fbx:opengl axis system (which is arbitrarily at Y up, as opengl is in reality axis agnostic) and sometimes what is needed is Z up so added an option for Z up conversion

- FindFBX.cmake: add support for latest fbx sdk ( 2014.2 )"
This commit is contained in:
Robert Osfield
2014-04-09 17:40:27 +00:00
parent db6df6fefd
commit c168887e5e
2 changed files with 91 additions and 22 deletions
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55
src/osgPlugins/fbx/ReaderWriterFBX.cpp
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@@ -265,6 +265,7 @@ ReaderWriterFBX::readNode(const std::string& filenameInit,
bool useFbxRoot = false;
bool lightmapTextures = false;
bool tessellatePolygons = false;
bool zUp = false;
if (options)
{
std::istringstream iss(options->getOptionString());
@@ -283,6 +284,10 @@ ReaderWriterFBX::readNode(const std::string& filenameInit,
{
tessellatePolygons = true;
}
if (opt == "ZUp")
{
zUp = true;
}
}
}
@@ -370,29 +375,53 @@ ReaderWriterFBX::readNode(const std::string& filenameInit,
}
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;
if (fbxAxis != FbxAxisSystem::OpenGL)
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)
{
int upSign;
FbxAxisSystem::EUpVector eUp = fbxAxis.GetUpVector(upSign);
bool bLeftHanded = fbxAxis.GetCoorSystem() == FbxAxisSystem::eLeftHanded;
float fSign = upSign < 0 ? -1.0f : 1.0f;
float zScale = bLeftHanded ? -1.0f : 1.0f;
osg::Matrix mat;
switch (eUp)
{
case FbxAxisSystem::eXAxis:
mat.set(0,fSign,0,0,-fSign,0,0,0,0,0,zScale,0,0,0,0,1);
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*zScale,0,0,0,0,1);
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*zScale,0,0,fSign,0,0,0,0,0,1);
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;