/// <summary>
/// begins an IMGUI window specifying where and how large it should be. If you are not using IMGUI in world space (for example, inside
/// a Scene with a scaled resolution policy) passing false for useRawMousePosition will use the Input.scaledMousePosition.
/// </summary>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="width">Width.</param>
/// <param name="height">Height.</param>
/// <param name="useRawMousePosition">If set to <c>true</c> use raw mouse position.</param>
public static void BeginWindow(float x, float y, float width, float height, bool useRawMousePosition = true)
{
_batcher.Begin();
_batcher.DrawRect(x, y, width, height, WINDOW_COLOR);
_elementX = x + ELEMENT_PADDING;
_lastY = y;
_windowWidth = width;
_windowHeight = height;
_elementWidth = _windowWidth - 2f * ELEMENT_PADDING;
var mousePos = useRawMousePosition ? Input.RawMousePosition : Input.ScaledMousePosition.ToPoint();
_mouseInWorldCoords = mousePos - new Point(Core.GraphicsDevice.Viewport.X, Core.GraphicsDevice.Viewport.Y);
}
