Impala Documentation

virtual void Impala::Visualization::VideoNav::DisplayFunc ( ) [inline, virtual]

Definition at line 95 of file VideoNav.h.

References OglGui::Window::DisplayFunc(), Impala::Core::Stream::RgbDataSrc::FrameNr(), Impala::Core::Stream::RgbDataSrc::GetHash(), Impala::Core::Stream::RgbDataSrc::LastFrame(), mDisplayFrameHash, mLastFrame, mLastHash, mMappedFramePos, OglGui::OglWindow::mOglWnd, and mSrc.

00096     {
00097         Window::DisplayFunc();
00098 
00099         if (!mSrc)
00100             return;
00101 
00102         OGC oldOGC;
00103         OGCSave(&oldOGC);
00104 
00105         SetSolidLineColor(oglBLACK);
00106         SetLineWidth(1);
00107         // on screen, the "interior span" of a Rectangle is width-1
00108         // also, the upper right corner pixel is not drawn
00109         int width = mOglWnd->width;
00110         DrawRectangle(0, 0, width-1, 25 - 2); // 2 is to separate
00111         if (mDisplayFrameHash)
00112         {
00113             if (mSrc->FrameNr() != mLastFrame)
00114                 mLastHash = mSrc->GetHash();
00115             String msg = "hash: [" + mLastHash + "]";
00116             oglSys.PosColPrintf(mOglWnd, 4, 27, oglGREEN, "%s",msg.c_str());
00117         }
00118         oglSys.PosColPrintf(mOglWnd, 20, 7, oglGREEN, "at frame %d of %d",
00119                             mSrc->FrameNr(), mSrc->LastFrame());
00120         SetSolidLineColor(oglRED);
00121         mMappedFramePos = ((double)mSrc->FrameNr()/mSrc->LastFrame())*(width-3);
00122         DrawRectangle(1 + mMappedFramePos, 1, 1, 25 - 4);
00123 
00124         OGCRestore(&oldOGC);
00125     }

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