/// <summary>
/// Returns the extra height added by the top and bottom borders extending before the 4:3 aspect.
/// </summary>
public float GetBorderHeightY(float actualAspect, float width)
{
if (actualAspect < AspectRatioLimit)
{
AspectConverter.WidthToResolution((int)width, actualAspect, out Resolution resolutionOurAspect);
AspectConverter.WidthToResolution((int)width, AspectConverter.OriginalGameAspect, out Resolution resolutionGameAspect);
return(resolutionOurAspect.Height - resolutionGameAspect.Height);
}
return(0);
}
/// <summary>
/// Used for shifting item locations of an orthographic projection (e.g. special stage HUD)
/// that are relative to the top edge of the screen.
/// Note: Assumes resolution is 640x480.
/// </summary>
/// <param name="originalPosition">Original position of the object.</param>
/// <param name="relativeAspectRatio">Relative aspect ratio of the desired aspect compared to game's aspect.</param>
/// <param name="actualAspect">The desired aspect ratio.</param>
public float ProjectFromOldToNewCanvasY(float originalPosition, float relativeAspectRatio, float actualAspect)
{
if (actualAspect < AspectRatioLimit)
{
// Now the projection is the right size, however it is not centered to our screen.
AspectConverter.WidthToResolution((int)GameCanvasWidth, actualAspect, out Resolution resolution); // Get resolution with our aspect equal to the height.
float borderHeight = resolution.Height - GameCanvasHeight; // Get the extra height (top and bottom border)
float topBorderOnly = (borderHeight / 2); // We only want top border.
float originalPlusTopBorder = topBorderOnly + originalPosition; // Our top border is in the aspect ratio it originated from,
// we need to scale it to the new ratio.
return(originalPlusTopBorder * relativeAspectRatio);
}
return(originalPosition);
}