tools/toolgrabview3d/ortoolgrabview3d_view.cxx

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

//--- Class declaration
#include "ortoolgrabview3d_view.h"

#if defined( KARCH_ENV_WIN )
    #include <windows.h>    //For wglUseFontBitmaps
#endif
#include <fbsdk/fbsdk-opengl.h>
#pragma comment(lib,"user32.lib")   // This is to avoid changing the template for the .dsp files.

FBClassImplementation( ORView3D );

/************************************************
 *  Constructor
 ************************************************/
ORView3D::ORView3D() :
    mRender(NULL),
    mFontDisplayList(0)
{
    mRender = mSystem.Renderer;

    // The resulting file will depend on the extension of the output file.
    // "output.avi" will generate a Windows Media file, and "output.mov"
    // will generate a QuickTime file. The QuickTime authoring module must
    // be installed on your machine to generate this type of file. On Windows
    // it comes with the free version of the player, but is not installed
    // by default.
    mFileName = "output.avi";
    mFilePath = "C:";

    //Here, we show that it is easy to enable/disable final artifacts,
    //like the SafeArea or the CameraLabel. IMPORTANT: For this, we must
    //not forget to pass this FBView to RenderEnd or these won't be drawed.
    FBViewingOptions* lVO = mRender->GetViewingOptions();
    lVO->ShowTimeCode() = true;
    lVO->ShowSafeArea() = true;
    lVO->ShowCameraLabel() = true;
}

/************************************************
 *  Destructor
 ************************************************/
void ORView3D::FBDestroy()
{
    if( mFontDisplayList )
    {
        glDeleteLists(mFontDisplayList,256);
        mFontDisplayList = 0;
    }
}

/************************************************
 *  Refresh callback
 ************************************************/
void ORView3D::Refresh(bool pNow)
{
    FBView::Refresh(pNow);
}

/************************************************
 *  Expose callback
 ************************************************/
void ORView3D::ViewExpose()
{
    //-------------------------------------------------------------------------
    // Important Note:
    //
    // You need to make sure that the render size here is the same that you
    // passed to the grab options.
    //-------------------------------------------------------------------------
    int Width = Region.Position.X[1] - Region.Position.X[0];
    int Height = Region.Position.Y[1] - Region.Position.Y[0];
    if( mRender->RenderBegin(0, 0, Width, Height) )
    {
        mRender->PreRender();
        mRender->Render();
        mRender->RenderEnd(this);
    }

    //Here we add a custom render pass to draw some text onto the render result.
    CustomGLDrawString(5, 15, "Custom Title!");
}

void ORView3D::ViewInput(int pMouseX, int pMouseY, FBInputType pAction, int pButtonKey, int pModifier)
{
    //-------------------------------------------------------------------------
    // Important Note:
    //
    // Since we don't render in memory, we need the render window to be shown
    // before we begin the video grabbing, or it will give unpredicted results.
    //-------------------------------------------------------------------------
    if( pAction == kFBButtonDoubleClick )
    {
        FBVideoGrabber      VideoGrabber;
        FBVideoGrabOptions  GrabOptions = VideoGrabber.GetOptions();

        FBTime lStart, lStop, lStep;
        lStart.SetTime(0, 0, 0, 0, 0);  //Frame 0
        lStop.SetTime(0, 0, 0, 150, 0); //Frame 150
        lStep.SetTime(0, 0, 0, 1, 0);   //1 Frame

        GrabOptions.mTimeSpan.Set(lStart, lStop);
        GrabOptions.mTimeSteps.SetTime(0, 0, 0, 1, 0);
        GrabOptions.mCameraResolution = kFBResolutionCustom;
        GrabOptions.mBitsPerPixel = FBVideoRender32Bits;
        GrabOptions.mFieldMode = FBFieldModeNoField;
        GrabOptions.mViewingMode = FBViewingModeModelsOnly;
        GrabOptions.mOutputFileName = mFilePath + FBString( "\\" ) + mFileName;
        GrabOptions.mAntiAliasing = false;
        GrabOptions.mRenderAudio = false;
        GrabOptions.mAudioRenderFormat = FBAudioFmt_GetDefaultFormat(); //44100Hz 16bits stereo

        VideoGrabber.SetOptions(&GrabOptions);
        VideoGrabber.SetRefreshViewFunc(this, RefreshViewCallback);

        //Start rendering while grabbing each frame
        if( VideoGrabber.BeginGrab() )  //Check if we can grab
        {
            VideoGrabber.Grab();        //Grab all frame
            VideoGrabber.EndGrab();     //End grabbing session
        }
    }
}

void ORView3D::RefreshViewCallback(void* pThis)
{
    ORView3D* lThis = (ORView3D*)pThis;
    lThis->Refresh(true);
}

FBString ORView3D::GetFileName()
{
    return mFileName;
}

void ORView3D::SetFileName( const char* pFileName )
{
    mFileName = pFileName;
}

FBString ORView3D::GetFilePath()
{
    return mFilePath;
}

void ORView3D::SetFilePath( const char* pFilePath )
{
    mFilePath = pFilePath;
}

void ORView3D::CustomGLDrawString(int pX, int pY, const char* pText)
{
// For now we cannot draw custom strings on Mac OSX...
#if defined( KARCH_ENV_WIN )
    if( mFontDisplayList == 0 ) //Create fonts display list. (256 is for the ascii table size)
    {
        mFontDisplayList = glGenLists(256);
        if( !wglUseFontBitmaps(GetDC(NULL), 0, 256, mFontDisplayList) )
        {
            glDeleteLists(mFontDisplayList, 256);
            mFontDisplayList = 0;
        }
    }

    if( mFontDisplayList )
    {
        //We must initialize 2D coordinate system so that the upper-left corner is the origin.
        int Width = Region.Position.X[1] - Region.Position.X[0];
        int Height = Region.Position.Y[1] - Region.Position.Y[0];
        glViewport(0, 0, Width, Height);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glOrtho(0, Width, Height, 0, -1, 1);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();

        //Draw text
        glRasterPos2i(pX, pY);                                  //Position the string in space 
        glListBase(mFontDisplayList);                           //Indicate start of glyph display lists
        glCallLists((GLsizei)strlen(pText), GL_UNSIGNED_BYTE, pText);   //Now draw the characters in a string
    }
#endif
}