SceneNode *SceneConverter::makeSceneNode(FbxNode *node)
{
SceneNode *sceneNode = new SceneNode();
if (node->GetParent() == NULL) // The root
{
// Type
sceneNode->type = FbxString("root");
// Name
sceneNode->attributes.push_back(std::make_pair(FbxString("name"), node->GetName()));
// Transformation
FbxAMatrix m = node->EvaluateGlobalTransform();
const FbxVector4 translation = m.GetT();
const FbxVector4 rotation = m.GetR();
const FbxVector4 scaling = m.GetS();
char buffer[1024];
FBXSDK_sprintf(buffer, 1024, "s:%8.5f,%8.5f,%8.5f,r:%8.5f,%8.5f,%8.5f,t:%8.5f,%8.5f,%8.5f",
(float)scaling[0], (float)scaling[1], (float)scaling[2],
(float)rotation[0], (float)rotation[1], (float)rotation[2],
(float)translation[0], (float)translation[1], (float)translation[2]);
sceneNode->attributes.push_back(std::make_pair(FbxString("transform"), FbxString(buffer)));
}
else
{
FbxCamera *camera = node->GetCamera();
if (camera != NULL)
{
sceneNode->type = FbxString("camera");
sceneNode->attributes.push_back(std::make_pair(FbxString("name"), node->GetName()));
sceneNode->attributes.push_back(std::make_pair(FbxString("fixed"), FbxString("true")));
FbxVector4 position = camera->EvaluatePosition();
FbxVector4 center = camera->EvaluateLookAtPosition();
// FIXME: seems EvaluateUpDirection doesn't give correct result as it
// is affected by its parent nodes' tranforms however we attach camera
// to the root in paper3d's scene.
// FbxVector4 up = camera->EvaluateUpDirection(position, center);
FbxDouble3 up = camera->UpVector.Get();
char buffer[1024];
FBXSDK_sprintf(buffer, 1024, "eye:%8.5f,%8.5f,%8.5f,center:%8.5f,%8.5f,%8.5f,up:%8.5f,%8.5f,%8.5f",
(float)position[0], (float)position[1], (float)position[2],
(float)center[0], (float)center[1], (float)center[2],
(float)up[0], (float)up[1], (float)up[2]);
sceneNode->attributes.push_back(std::make_pair(FbxString("lookat"), FbxString(buffer)));
float nearZ = (float)camera->GetNearPlane();
float farZ = (float)camera->GetFarPlane();
if (camera->ProjectionType.Get() == FbxCamera::ePerspective)
{
FbxCamera::EAspectRatioMode lCamAspectRatioMode = camera->GetAspectRatioMode();
double lAspectX = camera->AspectWidth.Get();
double lAspectY = camera->AspectHeight.Get();
double lAspectRatio = 1.333333;
switch( lCamAspectRatioMode)
{
case FbxCamera::eWindowSize:
lAspectRatio = lAspectX / lAspectY;
break;
case FbxCamera::eFixedRatio:
lAspectRatio = lAspectX;
break;
case FbxCamera::eFixedResolution:
lAspectRatio = lAspectX / lAspectY * camera->GetPixelRatio();
break;
case FbxCamera::eFixedWidth:
lAspectRatio = camera->GetPixelRatio() / lAspectY;
break;
case FbxCamera::eFixedHeight:
lAspectRatio = camera->GetPixelRatio() * lAspectX;
break;
default:
break;
}
//get the aperture ratio
double lFilmHeight = camera->GetApertureHeight();
double lFilmWidth = camera->GetApertureWidth() * camera->GetSqueezeRatio();
//here we use Height : Width
double lApertureRatio = lFilmHeight / lFilmWidth;
//change the aspect ratio to Height : Width
lAspectRatio = 1 / lAspectRatio;
//revise the aspect ratio and aperture ratio
FbxCamera::EGateFit lCameraGateFit = camera->GateFit.Get();
switch( lCameraGateFit )
{
case FbxCamera::eFitFill:
if( lApertureRatio > lAspectRatio) // the same as eHORIZONTAL_FIT
{
lFilmHeight = lFilmWidth * lAspectRatio;
camera->SetApertureHeight( lFilmHeight);
lApertureRatio = lFilmHeight / lFilmWidth;
}
else if( lApertureRatio < lAspectRatio) //the same as eVERTICAL_FIT
{
lFilmWidth = lFilmHeight / lAspectRatio;
camera->SetApertureWidth( lFilmWidth);
lApertureRatio = lFilmHeight / lFilmWidth;
}
break;
case FbxCamera::eFitVertical:
lFilmWidth = lFilmHeight / lAspectRatio;
camera->SetApertureWidth( lFilmWidth);
lApertureRatio = lFilmHeight / lFilmWidth;
break;
case FbxCamera::eFitHorizontal:
lFilmHeight = lFilmWidth * lAspectRatio;
camera->SetApertureHeight( lFilmHeight);
lApertureRatio = lFilmHeight / lFilmWidth;
break;
case FbxCamera::eFitStretch:
lAspectRatio = lApertureRatio;
break;
case FbxCamera::eFitOverscan:
if( lFilmWidth > lFilmHeight)
{
lFilmHeight = lFilmWidth * lAspectRatio;
}
else
{
lFilmWidth = lFilmHeight / lAspectRatio;
}
lApertureRatio = lFilmHeight / lFilmWidth;
break;
case FbxCamera::eFitNone:
default:
break;
}
//change the aspect ratio to Width : Height
lAspectRatio = 1 / lAspectRatio;
#define HFOV2VFOV(h, ar) (2.0 * atan((ar) * tan( (h * FBXSDK_PI_DIV_180) * 0.5)) * FBXSDK_180_DIV_PI) //ar : aspectY / aspectX
#define VFOV2HFOV(v, ar) (2.0 * atan((ar) * tan( (v * FBXSDK_PI_DIV_180) * 0.5)) * FBXSDK_180_DIV_PI) //ar : aspectX / aspectY
double lFieldOfViewX = 0.0;
double lFieldOfViewY = 0.0;
if (camera->GetApertureMode() == FbxCamera::eVertical)
{
lFieldOfViewY = camera->FieldOfView.Get();
lFieldOfViewX = VFOV2HFOV( lFieldOfViewY, 1 / lApertureRatio);
}
else if (camera->GetApertureMode() == FbxCamera::eHorizontal)
{
lFieldOfViewX = camera->FieldOfView.Get(); //get HFOV
lFieldOfViewY = HFOV2VFOV( lFieldOfViewX, lApertureRatio);
}
else if (camera->GetApertureMode() == FbxCamera::eFocalLength)
{
lFieldOfViewX = camera->ComputeFieldOfView(camera->FocalLength.Get()); //get HFOV
lFieldOfViewY = HFOV2VFOV( lFieldOfViewX, lApertureRatio);
}
else if (camera->GetApertureMode() == FbxCamera::eHorizAndVert)
{
lFieldOfViewX = camera->FieldOfViewX.Get();
lFieldOfViewY = camera->FieldOfViewY.Get();
}
#undef HFOV2VFOV
#undef VFOV2HFOV
FBXSDK_sprintf(buffer, 1024, "perspective,fov:%8.5f,aspect:-1,znear:%8.5f,zfar:%8.5f",
(float)lFieldOfViewY, nearZ, farZ);
sceneNode->attributes.push_back(std::make_pair(FbxString("projection"), FbxString(buffer)));
}
else
{
FBXSDK_sprintf(buffer, 1024, "orthogonal,aspect:-1,znear:%8.5f,zfar:%8.5f", nearZ, farZ);
sceneNode->attributes.push_back(std::make_pair(FbxString("projection"), FbxString(buffer)));
}
m_numCameras++;
}
else
{
FbxLight *light = node->GetLight();
if (light != NULL)
{
m_numLights++;
FBX_ASSERT(!"Not implemented!");
}
else
{
// Type
sceneNode->type = FbxString("drawable");
// Name
sceneNode->attributes.push_back(std::make_pair(FbxString("name"), node->GetName()));
// Transformation
FbxAMatrix m = node->EvaluateLocalTransform();
//FbxAMatrix m1 = node->EvaluateGlobalTransform();
const FbxVector4 translation = m.GetT();
const FbxVector4 rotation = m.GetR();
const FbxVector4 scaling = m.GetS();
float s[3], r[3], t[3];
t[0] = (float)translation.mData[0];
t[1] = (float)translation.mData[1];
t[2] = (float)translation.mData[2];
r[0] = (float)(rotation[0] * FBXSDK_DEG_TO_RAD);
r[1] = (float)(rotation[1] * FBXSDK_DEG_TO_RAD);
r[2] = (float)(rotation[2] * FBXSDK_DEG_TO_RAD);
s[0] = (float)scaling[0];
s[1] = (float)scaling[1];
s[2] = (float)scaling[2];
//const FbxVector4 translation1 = m1.GetT();
//const FbxVector4 rotation1 = m1.GetR();
//const FbxVector4 scaling1 = m1.GetS();
char buffer[1024];
FBXSDK_sprintf(buffer, 1024, "s:%8.5f,%8.5f,%8.5f,r:%8.5f,%8.5f,%8.5f,t:%8.5f,%8.5f,%8.5f",
s[0], s[1], s[2], r[0], r[1], r[2], t[0], t[1], t[2]);
sceneNode->attributes.push_back(std::make_pair(FbxString("transform"), FbxString(buffer)));
// Mesh
//if (node->GetNodeAttribute()->GetAttributeType() == FbxNodeAttribute::eCamera)
//{
// FBXSDK_printf("f**k");
//}
static FbxUInt32 i = 0;
if (node->GetMesh() == NULL)
{
sceneNode->type = FbxString("node");
}
else
{
const char *meshName = node->GetMesh()->GetName();
if (meshName == NULL || meshName[0] == 0)
{
meshName = node->GetName();
}
FbxString prefix;
if (meshName == NULL || meshName[0] == 0)
{
prefix = FbxString("mesh_") + FbxString(int(i++));
}
else
{
prefix = FbxString(meshName);
}
sceneNode->geometry = prefix + FbxString(".") + m_arguments->meshFormat;
// Material
FbxSurfaceMaterial *material = node->GetMaterial(0);
if (material != NULL)
{
// This only gets the material of type sDiffuse, you probably need to
// traverse all Standard Material Property by its name to get all
// possible textures.
FbxProperty prop = material->FindProperty(FbxSurfaceMaterial::sDiffuse);
// Check if it's layeredtextures
int layeredTextureCount = prop.GetSrcObjectCount<FbxLayeredTexture>();
if (prop.GetSrcObjectCount<FbxTexture>() > 0)
{
FbxFileTexture *lTex = prop.GetSrcObject<FbxFileTexture>(0);
FbxString filename = FbxPathUtils::GetFileName(lTex->GetFileName());
sceneNode->texture = filename.Lower();
m_textures.push_back(FbxString(lTex->GetFileName()));
}
// root node is not counted as a drawable.
m_numDrawables++;
}
}
}
}
}
return sceneNode;
}
