private void OnMouseMove(object sender, MouseEventArgs e)
{
var location = e.GetPosition(ImageHostGrid);
if (ImageHostGrid.IsMouseCaptured && e.LeftButton == MouseButtonState.Pressed)
{
if ((Keyboard.Modifiers & ModifierKeys.Alt) > 0)
{
// Calculate the new phi and theta based on mouse position relative to where the user clicked
var dPhi = ((float)(mouseLastLocation.Y - location.Y) / 300);
var dTheta = ((float)(mouseLastLocation.X - location.X) / 300);
viewModel.CameraRotate(-dTheta, dPhi);
}
}
else if (ImageHostGrid.IsMouseCaptured && e.MiddleButton == MouseButtonState.Pressed)
{
if ((Keyboard.Modifiers & ModifierKeys.Alt) > 0)
{
var dx = ((float)(mouseLastLocation.X - location.X));
var dy = ((float)(mouseLastLocation.Y - location.Y));
viewModel.CameraPan(-dx, dy);
}
}
mouseLastLocation = location;
}