void SphericalCamera::MoveFocusUp(double amount)
{
double focusPos[3];
GetFocusPosition(focusPos);
focusPos[0] += amount * yAxis[0];
focusPos[1] += amount * yAxis[1];
focusPos[2] += amount * yAxis[2];
SetFocusPosition(focusPos);
}
//////////////////////////////////////////////////////////////////////////
/// Adjust camera height.
///
/// @param height - The new height.
//////////////////////////////////////////////////////////////////////////
void Camera::AdjustCameraHeight(VCNFloat height)
{
const Vector3& camPos = GetViewerPosition();
const Vector3& camTarget = GetFocusPosition();
const float oldViewerHeight = camPos.y;
SetViewerPosition(Vector3(camPos.x, height, camPos.z));
const float adjustHeight = height - oldViewerHeight;
SetFocusPosition(Vector3(camTarget.x, camTarget.y + adjustHeight, camTarget.z));
}