private void PanCamera(PulsarMessage message)
{
PulsarCamera camera = null;
if (_renderSurface.InvokeRequired)
{
var delegateCameraRotate = new ThreadSafeCameraPan(PanCamera);
_renderSurface.Invoke(delegateCameraRotate, new object[] { message });
}
else
{
string keyPressed = "";
//check if any constraint key is present
message.Properties.TryGetValue("constrainKeyDown", out object constrainKeyPressed);
bool keyDownFound = (constrainKeyPressed != null);
if (keyDownFound)
{
keyPressed = (string)constrainKeyPressed;
}
//get the mouseDelta property from the message
message.Properties.TryGetValue("mouseDelta", out object mouseDelta);
if (mouseDelta != null)
{
IntVector2 delta = (IntVector2)mouseDelta;
if (delta != null)
{
camera = _mainApplication.DisplayScene.SceneCamera;
if (camera != null)
{
//only pan horizontally if there is no vertical constraint
if (!keyDownFound || keyPressed != "shift")
{
if (delta.X > 0)
{
camera.Node.Translate(Vector3.Right * 3);
}
else if (delta.X < 0)
{
camera.Node.Translate(Vector3.Left * 3);
}
}
//only pan vertically if there is no horizontal constraint
if (!keyDownFound || keyPressed != "ctrl")
{
if (delta.Y > 0)
{
camera.Node.Translate(Vector3.Down * 3);
}
else if (delta.Y < 0)
{
camera.Node.Translate(Vector3.Up * 3);
}
}
}
}
}
}
}