//
// FUNCTION: HandleCommand()
//
// PURPOSE: Take action in response to user action at the dialog box's controls.
//
void HandleCommand(_In_ HWND hwndDlg, _In_ WORD wCtrlId)
{
switch (wCtrlId)
{
case IDC_CLOSE:
// Close the sample dialog box.
EndDialog(hwndDlg, 0);
break;
case IDC_RADIO_100:
case IDC_RADIO_200:
case IDC_RADIO_300:
case IDC_RADIO_400:
// The user clicked one of the radio button to apply some fullscreen magnification. (We know the control ids are sequential here.)
SetZoom(hwndDlg, (float)(wCtrlId - IDC_RADIO_100 + 1));
break;
case IDC_CHECK_SETGRAYSCALE:
{
// The user clicked the checkbox to apply grayscale to the colors on the screen.
bool fGrayscaleOn = (BST_CHECKED == SendDlgItemMessage(hwndDlg, IDC_CHECK_SETGRAYSCALE, BM_GETCHECK, 0, 0));
SetColorGrayscaleState(fGrayscaleOn);
break;
}
case IDC_CHECK_SETINPUTTRANSFORM:
{
// The user clicked the checkbox to apply an input transform for touch and pen input.
bool fInputTransformOn = (BST_CHECKED == SendDlgItemMessage(hwndDlg, IDC_CHECK_SETINPUTTRANSFORM, BM_GETCHECK, 0, 0));
SetInputTransform(hwndDlg, fInputTransformOn);
break;
}
case IDC_BUTTON_GETSETTINGS:
// The user wants to retrieve the current magnification settings.
GetSettings(hwndDlg);
break;
}
}
//
// FUNCTION: SetZoom()
//
// PURPOSE: Apply fullscreen magnification.
//
void SetZoom(_In_ HWND hwndDlg, _In_ float magnificationFactor)
{
// Attempts to apply a magnification of less than 100% will fail.
if (magnificationFactor >= 1.0)
{
// The offsets supplied to MagSetFullscreenTransform() are relative to the top left corner
// of the primary monitor, in unmagnified coordinates. To position the top left corner of
// some window of interest at the top left corner of the magnified view, call GetWindowRect()
// to get the window rectangle, and pass the rectangle's left and top values as the offsets
// supplied to MagSetFullscreenTransform().
// If the top left corner of the window of interest is to be positioned at the top left
// corner of the monitor furthest to the left of the primary monitor, then the top left
// corner of the virtual desktop would be adjusted by the current magnification, as follows:
// int xOffset = rcTargetWindow.left - (int)(rcVirtualDesktop.left / magnificationFactor);
// int yOffset = rcTargetWindow.top - (int)(rcVirtualDesktop.top / magnificationFactor);
// For this sample, keep the sample's UI at the center of the magnified view on the primary monitor.
// In order to do this, it is nececessary to adjust the offsets supplied to MagSetFullscreenTransform()
// based on the magnification being applied.
// Note that the calculations in this file which use GetSystemMetrics(SM_C*SCREEN) assume
// that the values returned from that function are unaffected by the current DPI setting.
// In order to ensure this, the manifest for this app declares the app to be DPI aware.
int xDlg = (int)((float)GetSystemMetrics(SM_CXSCREEN) * (1.0 - (1.0 / magnificationFactor)) / 2.0);
int yDlg = (int)((float)GetSystemMetrics(SM_CYSCREEN) * (1.0 - (1.0 / magnificationFactor)) / 2.0);
BOOL fSuccess = MagSetFullscreenTransform(magnificationFactor, xDlg, yDlg);
if (fSuccess)
{
// If an input transform for pen and touch is currently applied, update the transform
// to account for the new magnification.
BOOL fInputTransformEnabled;
RECT rcInputTransformSource;
RECT rcInputTransformDest;
if (MagGetInputTransform(&fInputTransformEnabled, &rcInputTransformSource, &rcInputTransformDest))
{
if (fInputTransformEnabled)
{
SetInputTransform(hwndDlg, fInputTransformEnabled);
}
}
}
}
}
CameraObject::CameraObject()
{
m_videoBuffer = new TrackedVideoBuffer( DefaultImageSize[0], DefaultImageSize[1] );
SetInputTransform( m_videoBuffer->GetOutputTransform() );
m_videoInputSwitch = vtkSmartPointer<vtkPassThrough>::New();
m_videoInputSwitch->SetInputConnection( m_videoBuffer->GetVideoOutputPort() ); // by default, get input from internal buffer
m_lensDisplacementTransform = vtkSmartPointer<vtkTransform>::New();
m_opticalCenterTransform = vtkSmartPointer<vtkTransform>::New();
m_opticalCenterTransform->Concatenate( this->GetWorldTransform() );
m_opticalCenterTransform->Concatenate( m_lensDisplacementTransform );
m_imageTransform = vtkSmartPointer<vtkTransform>::New();
m_imageTransform->SetInput( m_opticalCenterTransform );
m_trackingCamera = false;
m_intrinsicEditable = false;
m_extrinsicEditable = false;
m_camera = vtkSmartPointer<vtkCamera>::New();
m_imageDistance = 100.0;
m_globalOpacity = 0.7;
m_saturation = 1.0;
m_brightness = 1.0;
m_useTransparency = false;
m_useGradient = true;
m_showMask = false;
m_trackedTransparencyCenter = false;
m_transparencyCenter[0] = 0.5;
m_transparencyCenter[1] = 0.5;
m_transparencyRadius[0] = 0.03;
m_transparencyRadius[1] = 0.3;
m_mouseMovingTransparency = false;
CreateCameraRepresentation();
m_cachedImageSize[ 0 ] = DefaultImageSize[0];
m_cachedImageSize[ 1 ] = DefaultImageSize[1];
// make sure every ParamModified signal also generates a Modified signal
connect( this, SIGNAL(ParamsModified()), this, SLOT(ParamsModifiedSlot()) );
}
