public FilmTile GetTile(Bounds2 <int> sampleBounds)
{
// Account for the radius of the filter
var halfPixel = Vector2 <float> .One * 0.5f;
var p0 = (sampleBounds.Min.ToFloat() - halfPixel - Filter.Radius).Ceiling().ToInt();
var p1 = (sampleBounds.Max.ToFloat() - halfPixel + Filter.Radius).Floor().ToInt() + Vector2 <int> .One;
// Account for the overall image bounds
var tilePixelBounds = Bounds2 <int> .Intersect(new Bounds2 <int>(p0, p1), croppedPixelsBounds);
return(new FilmTile(tilePixelBounds, Filter, filterTable));
}
/// <summary>
/// Returns a list of <see cref="Bounds2"/> objects which have the maximum extend given in
/// <paramref name="tile"/>. The <paramref name="original"/> object will enclose the result.
/// </summary>
/// <param name="original">Original <see cref="Bounds2"/> object which should be splitted.</param>
/// <param name="tile">Maximum extend of a single resulting <see cref="Bounds2"/> object.</param>
/// <returns>List of <see cref="Bounds2"/> objects which have the maximum size defined in
/// <paramref name="tile"/>. All objects fit inside the <paramref name="original"/> object.</returns>
/// <remarks>The bound inside the <paramref name="tile"/> object must start at zero.</remarks>
public static List <Bounds2> Split(Bounds2 original, Bounds2 tile)
{
if (original == null)
{
throw new ArgumentNullException("original");
}
if (tile == null)
{
throw new ArgumentNullException("tile");
}
if (tile.MinX != 0 || tile.MinY != 0)
{
throw new ArgumentException("The MinX and MinY property must be zero.", "tile");
}
if (tile.DeltaX == 0 || tile.DeltaY == 0)
{
throw new ArgumentException("The given tile bound has no extent.", "tile");
}
List <Bounds2> result = new List <Bounds2> ();
double currentX = original.MinX;
while (currentX < original.MaxX)
{
double currentY = original.MinY;
while (currentY < original.MaxY)
{
tile.MoveTo(currentX, currentY);
Bounds2 newTile = original.Intersect(tile);
result.Add(newTile);
currentY += tile.DeltaY;
}
currentX += tile.DeltaX;
}
return(result);
}