//---------------------------------------------------------------
	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;
		}

	}
Exemplo n.º 2
0
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;
}