/// <summary>
/// Gets the current screen setup for the given parameters.
/// </summary>
/// <param name="width">The current screen width</param>
/// <param name="height">The current screen height</param>
/// <param name="targetHeight">The target height</param>
/// <param name="pixelsPerUnit">The number of pixels per units</param>
public static ScreenSetup Get(int width, int height, int targetHeight, int pixelsPerUnit)
{
var setup = new ScreenSetup();
var prev = 0f;
// Get the zoom level that gets closest to target height
for (setup.zoom = 1; setup.zoom < 10; setup.zoom++)
{
var curr = height / setup.zoom;
if (prev != 0 && Math.Abs(targetHeight - prev) < Math.Abs(targetHeight - curr))
{
setup.zoom--;
break;
}
prev = curr;
}
// Now calculate the rest
setup.width = Convert.ToInt32(Math.Ceiling((double)width / setup.zoom));
setup.height = Convert.ToInt32(Math.Ceiling((double)height / setup.zoom));
setup.unitWidth = (float)setup.width / pixelsPerUnit;
setup.unitHeight = (float)setup.height / pixelsPerUnit;
setup.cameraWidth = width / (pixelsPerUnit * 2f);
setup.zoomedCameraWidth = width / (pixelsPerUnit * 2f * setup.zoom);
setup.cameraHeight = height / (pixelsPerUnit * 2f);
setup.zoomedCameraHeight = height / (pixelsPerUnit * 2f * setup.zoom);
return(setup);
}
/// <summary>
/// Checks if any screen properties as been changed since the last update.
/// </summary>
void Update()
{
if (Screen.height != height)
{
var mgr = BlitEngine.Instance;
var pix = pixelsPerUnit > 0 ? pixelsPerUnit : mgr.pixelsPerUnit;
if (targetHeight != 0 && mgr.pixelsPerUnit != 0)
{
height = Screen.height;
screen = ScreenSetup.Get(Screen.width, Screen.height, targetHeight, pix);
mgr.Zoom = screen.zoom;
}
}
}
