private TransformResult WindowFromScreen(Vector2 position, ICameraModel2D cam, IViewportModel viewport)
{
var windowResolution = new Vector2((float)_systemComponents.Window.Width, (float)_systemComponents.Window.Height);
var screenSpaceCentreView = Vector2.Zero;
var viewWidth = windowResolution.X;
var viewHeight = windowResolution.Y;
if (viewport != null)
{
var windowSpaceCentreView = new Vector2((float)(viewport.MinX + (0.5f * viewport.Width)), (float)(viewport.MinY + (0.5f * viewport.Height)));
screenSpaceCentreView = new Vector2(windowSpaceCentreView.X, windowResolution.Y - windowSpaceCentreView.Y) - (0.5f * windowResolution);
viewWidth = viewport.Width;
viewHeight = viewport.Height;
}
var camVirtualResolution = cam.GetVirtualResolution();
var resolutionScalar = new Vector2(viewWidth / camVirtualResolution.X, viewHeight / camVirtualResolution.Y);
var screenSpacePosition = screenSpaceCentreView + (position * resolutionScalar);
var windowPosition = (0.5f * windowResolution) + new Vector2(screenSpacePosition.X, -screenSpacePosition.Y);
var withinView = windowPosition.X >= 0.0f &&
windowPosition.X <= windowResolution.X && //Perhaps < preferred
windowPosition.Y >= 0.0f &&
windowPosition.Y <= windowResolution.Y; //Perhaps < preferred
return(new TransformResult
{
Contained = withinView,
Position = windowPosition
});
}
private TransformResult ScreenFromWindow(Vector2 position, ICameraModel2D cam, IViewportModel viewport)
{
var viewPositionOriginTopLeft = position;
var viewWidth = (float)_systemComponents.Window.Width;
var viewHeight = (float)_systemComponents.Window.Height;
if (viewport != null)
{
viewWidth = viewport.Width;
viewHeight = viewport.Height;
viewPositionOriginTopLeft -= new Vector2(viewport.MinX, viewport.MinY);
}
var viewPositionTransformed = new Vector2(viewPositionOriginTopLeft.X, viewHeight - viewPositionOriginTopLeft.Y);
viewPositionTransformed -= 0.5f * new Vector2(viewWidth, viewHeight);
var camVirtualResolution = cam.GetVirtualResolution();
var resolutionScalar = new Vector2(camVirtualResolution.X / viewWidth, camVirtualResolution.Y / viewHeight);
var screenPosition = viewPositionTransformed * resolutionScalar;
var withinView = screenPosition.X >= -0.5f * camVirtualResolution.X &&
screenPosition.X <= 0.5f * camVirtualResolution.X && //Perhaps < preferred
screenPosition.Y >= -0.5f * camVirtualResolution.Y &&
screenPosition.Y <= 0.5f * camVirtualResolution.Y; //Perhaps < preferred
return(new TransformResult
{
Contained = withinView,
Position = screenPosition
});
}
