void
FlyThrough::OnTimer(void)
{
vtkRenderWindowInteractor *rwi = Interactor;
int Pos[2];
rwi->GetEventPosition(Pos);
bool matchedUpState = true;
switch (State)
{
case VTKIS_ROTATE:
RotateAboutCamera3D(Pos[0], Pos[1]);
rwi->CreateTimer(VTKI_TIMER_UPDATE);
break;
case VTKIS_PAN:
PanCamera3D(Pos[0], Pos[1]);
rwi->CreateTimer(VTKI_TIMER_UPDATE);
break;
case VTKIS_ZOOM:
DollyCameraAndFocus3D(Pos[0], Pos[1]);
rwi->CreateTimer(VTKI_TIMER_UPDATE);
break;
default:
matchedUpState = false;
break;
}
if (!matchedUpState && shouldSpin)
{
VisWindow *vw = proxy;
if(!vw->GetSpinModeSuspended())
{
if (vw->GetSpinMode())
{
OldX = spinOldX;
OldY = spinOldY;
RotateAboutCamera3D(spinNewX, spinNewY);
rwi->CreateTimer(VTKI_TIMER_UPDATE);
}
else
{
DisableSpinMode();
}
}
else if(vw->GetSpinMode())
{
// Don't mess with the camera, just create another timer so
// we keep getting into this method until spin mode is no
// longer suspended.
rwi->CreateTimer(VTKI_TIMER_UPDATE);
}
}
}
void
Zoom3D::EnableSpinMode(void)
{
VisWindow *vw = proxy;
if (vw->GetSpinMode())
{
shouldSpin = true;
//
// VTK will not be happy unless we enter one of its pre-defined modes.
// Timer seems as appropriate as any (there idea of spin is much
// different than ours). Also, set up the first timer so our spinning
// can get started.
//
StartTimer();
vtkRenderWindowInteractor *rwi = Interactor;
rwi->CreateTimer(VTKI_TIMER_UPDATE);
}
}