importexport/impexpcamera/orimpexpcamera_engine.cxx

/***************************************************************************************
 Autodesk(R) Open Reality(R) Samples
 
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***************************************************************************************/

// Class declarations
#include "orimpexpcamera_engine.h"

/************************************************
 *  Constructor.
 ************************************************/
ORCameraEngine::ORCameraEngine()
{
    mImportFile         = NULL;
    mExportProperties   = false;
    mExportMesh         = false;
    mExportAnimation    = true;
}


/************************************************
 *  Destructor.
 ************************************************/
ORCameraEngine::~ORCameraEngine()
{
}


/************************************************
 *  Import cameras from a given file.
 ************************************************/
void ORCameraEngine::Import(const char* pFilename)
{
    int         lNumberOfCameras;
    int         i,j,k;
    char        lNameBuf[50];
    FBString    lCameraName;
    FBCamera*   lCamera;
    double      lResolutionWidth,   lResolutionHeight,
                lPixelAspect,
                lNearPlane,         lFarPlane,
                lAov,               lFocalLength;

    double      lKeyFrames;
    double      lTime;
    double      lPos[3], lRot[3], lSca[3];
    FBString    lXYZ[3];

    lXYZ[0] = "X";
    lXYZ[1] = "Y";
    lXYZ[2] = "Z";

    FBAnimationNode*    lPosVNode,  *lRotVNode, *lScaVNode;
    FBAnimationNode*    lPosNode,   *lRotNode,  *lScaNode;
    FBFCurve*           lPosFCurve, *lRotFCurve, *lScaFCurve;
    FBTime              lFBTime;

    mImportFile = fopen( pFilename, "rt" );

    if( mImportFile == NULL )
        return;

    fscanf( mImportFile, "%d", &lNumberOfCameras );
    for( i=0; i<lNumberOfCameras; i++)
    {
        fscanf( mImportFile, "%s", lNameBuf );
        fscanf( mImportFile, "%lf", &lResolutionWidth );
        fscanf( mImportFile, "%lf", &lResolutionHeight );
        fscanf( mImportFile, "%lf", &lPixelAspect );
        fscanf( mImportFile, "%lf", &lNearPlane );
        fscanf( mImportFile, "%lf", &lFarPlane );
        fscanf( mImportFile, "%lf", &lAov );
        fscanf( mImportFile, "%lf", &lFocalLength );

        lCameraName         = lNameBuf;
        lCamera             = new FBCamera(lCameraName);
        lCamera->Show       = true;

        lCamera->ResolutionWidth    = lResolutionWidth;
        lCamera->PixelAspectRatio   = lPixelAspect;
        lCamera->NearPlaneDistance  = lNearPlane;
        lCamera->FarPlaneDistance   = lFarPlane;
        lCamera->FieldOfView        = lAov;
        lCamera->FocalLength        = lFocalLength;

        // Reset FCurves
        lCamera->Translation.SetAnimated(true);
        lCamera->Rotation.SetAnimated(true);
        lCamera->Scaling.SetAnimated(true);
        lPosVNode = FindAnimationNode( lCamera->AnimationNode, ANIMATIONNODE_TYPE_LOCAL_TRANSLATION );
        lRotVNode = FindAnimationNode( lCamera->AnimationNode, ANIMATIONNODE_TYPE_LOCAL_ROTATION    );
        lScaVNode = FindAnimationNode( lCamera->AnimationNode, ANIMATIONNODE_TYPE_LOCAL_SCALING     );

        for( k=0; k<3; k++)
        {
            lPosNode = FindAnimationNode( lPosVNode, lXYZ[k] );
            lRotNode = FindAnimationNode( lRotVNode, lXYZ[k] );
            lScaNode = FindAnimationNode( lScaVNode, lXYZ[k] );

            lPosFCurve = (FBFCurve*) lPosNode->FCurve;
            lRotFCurve = (FBFCurve*) lRotNode->FCurve;
            lScaFCurve = (FBFCurve*) lScaNode->FCurve;

            if( ! lPosFCurve )  lPosFCurve = new FBFCurve;
            else                lPosFCurve->Keys.RemoveAll();
            if( ! lRotFCurve )  lRotFCurve = new FBFCurve;
            else                lPosFCurve->Keys.RemoveAll();
            if( ! lScaFCurve )  lScaFCurve = new FBFCurve;
            else                lPosFCurve->Keys.RemoveAll();

            lPosNode->FCurve = lPosFCurve;
            lRotNode->FCurve = lRotFCurve;
            lScaNode->FCurve = lScaFCurve;
        }

        fscanf( mImportFile, "%lf", &lKeyFrames );

        for( j=0; j<lKeyFrames; j++ )
        {
            fscanf( mImportFile, "%lf", &lTime );
            fscanf( mImportFile, "%lf", &lPos[0] );
            fscanf( mImportFile, "%lf", &lPos[1] );
            fscanf( mImportFile, "%lf", &lPos[2] );
            fscanf( mImportFile, "%lf", &lRot[0] );
            fscanf( mImportFile, "%lf", &lRot[1] );
            fscanf( mImportFile, "%lf", &lRot[2] );
            fscanf( mImportFile, "%lf", &lSca[0] );
            fscanf( mImportFile, "%lf", &lSca[1] );
            fscanf( mImportFile, "%lf", &lSca[2] );

            lFBTime.SetSecondDouble( lTime );

            for( k=0; k<3; k++)
            {
                lPosNode = FindAnimationNode( lPosVNode, lXYZ[k] );
                lRotNode = FindAnimationNode( lRotVNode, lXYZ[k] );
                lScaNode = FindAnimationNode( lScaVNode, lXYZ[k] );

                lPosFCurve = (FBFCurve*) lPosNode->FCurve;
                lRotFCurve = (FBFCurve*) lRotNode->FCurve;
                lScaFCurve = (FBFCurve*) lScaNode->FCurve;

                lPosFCurve->KeyAdd( lFBTime, lPos[k] );
                lRotFCurve->KeyAdd( lFBTime, lRot[k] );
                lScaFCurve->KeyAdd( lFBTime, lSca[k] );

                lPosNode->FCurve = lPosFCurve;
                lRotNode->FCurve = lRotFCurve;
                lScaNode->FCurve = lScaFCurve;
            }
        }
        lCamera->Show = true;
    }
    fclose( mImportFile );
}


/************************************************
 *  Find an animation node, child of pNode.
 ************************************************/
FBAnimationNode* ORCameraEngine::FindAnimationNode( FBAnimationNode* pNode, const char* pNodeName )
{
    int i;
    FBAnimationNode* lNode = NULL;
    FBString    lName;

    for( i=0; i<pNode->Nodes.GetCount(); i++)
    {
        lName = pNode->Nodes[i]->Name;
        if( lName == pNodeName )
        {
            lNode = pNode->Nodes[i];
            break;
        }
    }
    return lNode;
}


/************************************************
 *  Export cameras (keyframes & properties) to a
 *  given file.
 ************************************************/
void ORCameraEngine::Export(char* pFilename)
{
    int lIdx;

    // We skip over the system cameras.
    // This means that the first non-system camera is at index 7.
    int lFirstUserCameraIndex = 7;

    mExportFile.Open( pFilename );
    mExportFile.SectionOpen( "Cameras" );
    {
        if( mExportProperties )
        {
            /*
            *   Export the camera basic configuration & information
            */
            mExportFile.SectionOpen( "Camera Information" );
            {
                for( lIdx = lFirstUserCameraIndex; lIdx < mSystem.Scene->Cameras.GetCount(); ++lIdx )
                {
                    ExportCameraInfo( mSystem.Scene->Cameras[lIdx] );
                }
            }
            mExportFile.SectionClose();
        }

        if( mExportAnimation )
        {
            /*
            *   Export the keyframed camera animation data.
            */
            mExportFile.SectionOpen( "Camera Animation (FCurves)" );
            {
                for( lIdx = lFirstUserCameraIndex; lIdx < mSystem.Scene->Cameras.GetCount(); ++lIdx )
                {
                    ExportCameraFCurves( mSystem.Scene->Cameras[lIdx] );
                }
            }
            mExportFile.SectionClose();
        }

        if( mExportMesh )
        {
            /*
            *   Export the camera mesh information.
            */
            mExportFile.SectionOpen( "Camera mesh information" );
            {
                for( lIdx=lFirstUserCameraIndex; lIdx < mSystem.Scene->Cameras.GetCount(); ++lIdx )
                {
                    ExportMesh( mSystem.Scene->Cameras[lIdx] );
                }
            }
        }
    }
    mExportFile.SectionClose();
    mExportFile.Close();
}


/************************************************
 *  Export camera properties.
 ************************************************/
void ORCameraEngine::ExportCameraInfo( FBCamera* pCamera )
{
    mExportFile.SectionOpen( pCamera->Name );
    {
        ExportPropertyList( pCamera );
    }
    mExportFile.SectionClose();
}


/************************************************
 *  Export camera FCurves.
 ************************************************/
void ORCameraEngine::ExportCameraFCurves( FBCamera* pCamera )
{
    mExportFile.SectionOpen( pCamera->Name );
    {
        ExportFCurves( pCamera->AnimationNode );
    }
    mExportFile.SectionClose();
}


/************************************************
 *  Export mesh for a model.
 ************************************************/
void ORCameraEngine::ExportMesh( FBModel* pModel )
{
    FBMesh*     lMesh = pModel->TessellatedMesh;
    FBVertex    lVertex;
    FBNormal    lNormal;
    FBUV        lUV;
    int         i;
    FBString    lLabelMesh( pModel->Name);

    lLabelMesh  += "_Mesh";

    if( lMesh->VertexCount() )
    {
        mExportFile.SectionOpen( lLabelMesh );
        {
            for( i=0; i<lMesh->VertexCount(); i++ )
            {
                lVertex = lMesh->VertexGet(i);
                lNormal = lMesh->VertexNormalGet(i);
                lUV     = lMesh->VertexUVGet(i);


                fprintf( mExportFile.GetIndentFile(), "Vertex %d:\tV(%f,%f,%f) N(%f,%f,%f) UV(%f,%f)\n",
                                                        i,
                                                        lVertex[0], lVertex[1], lVertex[2],
                                                        lNormal[0], lNormal[1], lNormal[2],
                                                        lUV[0], lUV[1] );
            }
        }
        mExportFile.SectionClose();
    }
}


/************************************************
 *  Export an FBAnimationNode's FCurves.
 ************************************************/
void ORCameraEngine::ExportFCurves( FBAnimationNode* pNode )
{
    int i;

    if( pNode->Nodes.GetCount() == 0 )
    {
        ExportFCurve( pNode );
    }
    else
    {
        mExportFile.SectionOpen( pNode->Name );

        for( i=0;i<pNode->Nodes.GetCount(); i++ )
        {
            ExportFCurves( pNode->Nodes[i] );
        }

        mExportFile.SectionClose();
    }
}


/************************************************
 *  Export the FCurve on a childless node.
 ************************************************/
void ORCameraEngine::ExportFCurve( FBAnimationNode* pNode )
{
    int i;
    FBFCurve*       lFCurve = (FBFCurve*) pNode->FCurve;
    if( lFCurve )
    {
        fprintf( mExportFile.GetIndentFile(), "%s\t", (const char*)pNode->Name );
        for( i=0; i<lFCurve->Keys.GetCount(); i++)
        {
            fprintf( mExportFile.GetFile(), "(%lf, %lf), ", (double)((FBTime)lFCurve->Keys[i].Time).GetSecondDouble(), (double)lFCurve->Keys[i].Value );
        }
        fprintf( mExportFile.GetFile(), "\n" );
    }
}


/************************************************
 *  Export the properties for a given component.
 ************************************************/
void ORCameraEngine::ExportPropertyList( FBComponent* pComponent )
{
    int         i;
    FBProperty* lProperty;
    FBString    lString;
    for( i=0;i<pComponent->PropertyList.GetCount();i++)
    {
        lProperty   = pComponent->PropertyList[i];
        lString     = lProperty->AsString() ? lProperty->AsString():"***NoStringVersion***";

        fprintf( mExportFile.GetIndentFile(), "%s\t%s\n", (char*)lProperty->GetName(), (char*)lString );
    }
}