//---------------------------------------------------------------
void CameraExporter::exportCamera( ExportNode* exportNode )
{
if ( !exportNode->getIsInVisualScene() )
return;
String cameraId = getCameraId(*exportNode);
INode* iNode = exportNode->getINode();
CameraObject* camera = (CameraObject*)iNode->GetObjectRef();
INode* targetNode = ( camera->ClassID().PartA() == LOOKAT_CAM_CLASS_ID) ? iNode->GetTarget() : 0;
if ( camera )
{
if ( mDocumentExporter->isExportedObject(ObjectIdentifier(camera)) )
return;
mDocumentExporter->insertExportedObject(ObjectIdentifier(camera), exportNode);
// Retrieve the camera parameters block
IParamBlock* parameters = (IParamBlock*) camera->GetReference(MaxCamera::PBLOCK_REF);
COLLADASW::BaseOptic * optics = 0;
if ( camera->IsOrtho() )
{
optics = new COLLADASW::OrthographicOptic(COLLADASW::LibraryCameras::mSW);
// Calculate the target distance for FOV calculations
float targetDistance;
if ( targetNode )
{
Point3 targetTrans = targetNode->GetNodeTM(mDocumentExporter->getOptions().getAnimationStart()).GetTrans();
Point3 cameraTrans = iNode->GetNodeTM(mDocumentExporter->getOptions().getAnimationStart()).GetTrans();
targetDistance = (targetTrans - cameraTrans).Length();
}
else
{
targetDistance = camera->GetTDist(mDocumentExporter->getOptions().getAnimationStart());
}
ConversionInverseOrthoFOVFunctor conversionInverseOrthoFOVFunctor(targetDistance);
if ( AnimationExporter::isAnimated(parameters, MaxCamera::FOV) )
{
optics->setXMag(conversionInverseOrthoFOVFunctor(parameters->GetFloat(MaxCamera::FOV)), XMAG_SID);
mAnimationExporter->addAnimatedParameter(parameters, MaxCamera::FOV, cameraId, XMAG_SID, 0, true, &conversionInverseOrthoFOVFunctor);
}
else
{
optics->setXMag(conversionInverseOrthoFOVFunctor(parameters->GetFloat(MaxCamera::FOV)));
}
}
else
{
optics = new COLLADASW::PerspectiveOptic(COLLADASW::LibraryCameras::mSW);
if ( AnimationExporter::isAnimated(parameters, MaxCamera::FOV) )
{
optics->setXFov(COLLADASW::MathUtils::radToDegF(parameters->GetFloat(MaxCamera::FOV)), XFOV_SID);
mAnimationExporter->addAnimatedParameter(parameters, MaxCamera::FOV, cameraId, XFOV_SID, 0, true, &ConversionFunctors::radToDeg);
}
else
{
optics->setXFov(COLLADASW::MathUtils::radToDegF(parameters->GetFloat(MaxCamera::FOV)));
}
}
bool hasAnimatedZNear = mAnimationExporter->addAnimatedParameter(parameters, MaxCamera::NEAR_CLIP, cameraId, optics->getZNearDefaultSid(), 0);
optics->setZNear(parameters->GetFloat(MaxCamera::NEAR_CLIP), hasAnimatedZNear);
bool hasAnimatedZFar = mAnimationExporter->addAnimatedParameter(parameters, MaxCamera::FAR_CLIP, cameraId, optics->getZFarDefaultSid(), 0);
optics->setZFar(parameters->GetFloat(MaxCamera::FAR_CLIP), hasAnimatedZFar);
#ifdef UNICODE
String exportNodeName = COLLADABU::StringUtils::wideString2utf8String(exportNode->getINode()->GetName());
COLLADASW::Camera colladaCamera(COLLADASW::LibraryCameras::mSW, optics, cameraId, COLLADASW::Utils::checkNCName(exportNodeName));
#else
COLLADASW::Camera colladaCamera(COLLADASW::LibraryCameras::mSW, optics, cameraId, COLLADASW::Utils::checkNCName(exportNode->getINode()->GetName()));
#endif
setExtraTechnique(&colladaCamera);
// Retrieve the camera target
if ( targetNode )
{
ExportNode* targetExportNode = mExportSceneGraph->getExportNode(targetNode);
addExtraParameter(EXTRA_PARAMETER_TARGET, "#" + targetExportNode->getId());
}
if (camera->GetMultiPassEffectEnabled(0, FOREVER))
{
IMultiPassCameraEffect *multiPassCameraEffect = camera->GetIMultiPassCameraEffect();
if (multiPassCameraEffect)
{
Class_ID id = multiPassCameraEffect->ClassID();
// the camera could have both effects, but not in Max
if (id == FMULTI_PASS_MOTION_BLUR_CLASS_ID)
{
IParamBlock2 *parameters = multiPassCameraEffect->GetParamBlock(0);
if (parameters )
{
addParamBlockAnimatedExtraParameters(MOTION_BLUR_ELEMENT, MOTION_BLUR_PARAMETERS, MOTION_BLUR_PARAMETER_COUNT, parameters, cameraId);
}
}
else if (id == FMULTI_PASS_DOF_CLASS_ID)
{
IParamBlock2 *parameters = multiPassCameraEffect->GetParamBlock(0);
if (parameters )
{
addParamBlockAnimatedExtraParameters(DEPTH_OF_FIELD_ELEMENT, DEPTH_OF_FIELD_PARAMETERS, DEPTH_OF_FIELD_PARAMETER_COUNT, parameters, cameraId);
addExtraParameter(TARGETDISTANCE_PARAMETER, camera->GetTDist(0));
}
}
}
}
addCamera(colladaCamera);
delete optics;
}
}
bool AlembicCamera::Save(double time, bool bLastFrame)
{
TimeValue ticks = GetTimeValueFromFrame(time);
Object *obj = mMaxNode->EvalWorldState(ticks).obj;
if (mNumSamples == 0) {
bForever = CheckIfObjIsValidForever(obj, ticks);
}
else {
bool bNewForever = CheckIfObjIsValidForever(obj, ticks);
if (bForever && bNewForever != bForever) {
ESS_LOG_INFO("bForever has changed");
}
}
bForever = false;
SaveMetaData(mMaxNode, this);
// Set the xform sample
Matrix3 wm = mMaxNode->GetObjTMAfterWSM(ticks);
if (mJob) {
Point3 worldMaxPoint = wm.GetTrans();
Abc::V3f alembicWorldPoint = ConvertMaxPointToAlembicPoint(worldMaxPoint);
mJob->GetArchiveBBox().extendBy(alembicWorldPoint);
}
// check if the camera is animated
if (mNumSamples > 0) {
if (bForever) {
return true;
}
}
// Return a pointer to a Camera given an INode or return false if the node
// cannot be converted to a Camera
CameraObject *cam = NULL;
if (obj->CanConvertToType(Class_ID(SIMPLE_CAM_CLASS_ID, 0))) {
cam = reinterpret_cast<CameraObject *>(
obj->ConvertToType(ticks, Class_ID(SIMPLE_CAM_CLASS_ID, 0)));
}
else if (obj->CanConvertToType(Class_ID(LOOKAT_CAM_CLASS_ID, 0))) {
cam = reinterpret_cast<CameraObject *>(
obj->ConvertToType(ticks, Class_ID(LOOKAT_CAM_CLASS_ID, 0)));
}
else {
return false;
}
CameraState cs;
Interval valid = FOREVER;
cam->EvalCameraState(ticks, valid, &cs);
float tDist = cam->GetTDist(ticks);
float ratio = GetCOREInterface()->GetRendImageAspect();
float aperatureWidth =
GetCOREInterface()->GetRendApertureWidth(); // this may differ from the
// imported value
// unfortunately
float focalLength =
(float)((aperatureWidth / 2.0) /
tan(cs.fov / 2.0)); // alembic wants this one in millimeters
aperatureWidth /= 10.0f; // convert to centimeters
IMultiPassCameraEffect *pCameraEffect = cam->GetIMultiPassCameraEffect();
Interval interval = FOREVER;
BOOL bUseTargetDistance = FALSE;
const int TARGET_DISTANCE = 0;
pCameraEffect->GetParamBlockByID(0)->GetValue(TARGET_DISTANCE, ticks,
bUseTargetDistance, interval);
float fFocalDepth = 0.0f;
const int FOCAL_DEPTH = 1;
pCameraEffect->GetParamBlockByID(0)->GetValue(FOCAL_DEPTH, ticks, fFocalDepth,
interval);
// store the camera data
mCameraSample.setNearClippingPlane(cs.hither);
mCameraSample.setFarClippingPlane(cs.yon);
// mCameraSample.setLensSqueezeRatio(ratio);
// should set to 1.0 according the article "Maya to Softimage: Camera
// Interoperability"
mCameraSample.setLensSqueezeRatio(1.0);
mCameraSample.setFocalLength(focalLength);
mCameraSample.setHorizontalAperture(aperatureWidth);
mCameraSample.setVerticalAperture(aperatureWidth / ratio);
if (bUseTargetDistance) {
mCameraSample.setFocusDistance(tDist);
}
else {
mCameraSample.setFocusDistance(fFocalDepth);
}
// save the samples
mCameraSchema.set(mCameraSample);
mNumSamples++;
// Note that the CamObject should only be deleted if the pointer to it is not
// equal to the object pointer that called ConvertToType()
if (cam != NULL && obj != cam) {
delete cam;
cam = NULL;
return false;
}
return true;
}