public TextureAtlas.SpriteAtlasEntry AddDynamicSheet(String Name, TileSheetDefinition Sheet, Texture2D Texture)
{
if (!String.IsNullOrEmpty(Name) && DynamicAtlasEntries.ContainsKey(Name))
{
DynamicAtlasEntries[Name].ReferenceCount += 1;
return(DynamicAtlasEntries[Name]);
}
if (String.IsNullOrEmpty(Name))
{
Name = System.Guid.NewGuid().ToString();
}
var newEntry = new TextureAtlas.SpriteAtlasEntry
{
SourceDefinition = Sheet,
SourceTexture = Texture,
AtlasBounds = new Rectangle(0, 0, Texture.Width, Texture.Height),
ReferenceCount = 1
};
newEntry.TileSheet = MakeTileSheet(newEntry, Texture.Bounds);
DynamicAtlasEntries.Add(Name, newEntry);
AtlasValid = false;
return(newEntry);
}
private void BlitSheet(TextureAtlas.SpriteAtlasEntry Sheet, Texture2D Into)
{
Sheet.NeedsBlitToAtlas = false;
var memTexture = TextureTool.MemoryTextureFromTexture2D(Sheet.SourceTexture);
if (Sheet.SourceDefinition.Type == TileSheetType.VariableWidthFont)
{
memTexture.Filter(c => (c.R == 0 && c.G == 0 && c.B == 0) ? new Color(0, 0, 0, 0) : c);
}
Into.SetData(0, Sheet.AtlasBounds, memTexture.Data, 0, memTexture.Width * memTexture.Height);
}
private ITileSheet MakeTileSheet(TextureAtlas.SpriteAtlasEntry Sheet, Rectangle AtlasBounds)
{
if (Sheet.SourceDefinition.Type == TileSheetType.VariableWidthFont)
{
return(new VariableWidthFont(Sheet.SourceTexture, AtlasBounds.Width, AtlasBounds.Height, Sheet.AtlasBounds));
}
else if (Sheet.SourceDefinition.Type == TileSheetType.JsonFont)
{
return(new JsonFont(Sheet.SourceDefinition.Texture, AtlasBounds, Sheet.AtlasBounds));
}
else
{
return(new TileSheet(AtlasBounds.Width, AtlasBounds.Height, Sheet.AtlasBounds, Sheet.SourceDefinition.TileWidth, Sheet.SourceDefinition.TileHeight, Sheet.SourceDefinition.RepeatWhenUsedAsBorder));
}
}
public SpriteAtlas(GraphicsDevice Device, ContentManager Content)
{
this.Device = Device;
var coreSheets = FileUtils.LoadJsonListFromMultipleSources <TileSheetDefinition>(ContentPaths.GUI.Skin, null, (s) => s.Name);
SheetGenerators = FindGenerators();
CoreAtlasEntries = coreSheets.Select(s =>
{
Texture2D realTexture = null;
switch (s.Type)
{
case TileSheetType.TileSheet:
case TileSheetType.VariableWidthFont:
case TileSheetType.JsonFont:
realTexture = AssetManager.GetContentTexture(s.Texture);
break;
case TileSheetType.Generated:
realTexture = SheetGenerators[s.Texture](Device, Content, s);
break;
}
var r = new TextureAtlas.SpriteAtlasEntry
{
SourceDefinition = s,
AtlasBounds = new Rectangle(0, 0, realTexture.Width, realTexture.Height),
SourceTexture = realTexture
};
r.TileSheet = MakeTileSheet(r, realTexture.Bounds);
return(r);
}).ToList();
NamedTileSheets = new Dictionary <string, ITileSheet>();
foreach (var coreSheet in CoreAtlasEntries)
{
NamedTileSheets.Upsert(coreSheet.SourceDefinition.Name, coreSheet.TileSheet);
}
Prerender();
}
/// <summary>
/// Attempt to place textures into the space defined by Dimensions until no more can be fit.
/// Subdivide the space after each insertion. Assume textures are sorted by size.
/// </summary>
/// <param name="Dimensions"></param>
/// <param name="Textures"></param>
internal static void TryPlaceTextures(Rectangle Dimensions, List <SpriteAtlasEntry> Textures)
{
SpriteAtlasEntry tex = null;
//Find largest entry that fits within the dimensions.
for (int i = 0; i < Textures.Count; ++i)
{
var Entry = Textures[i];
if (Entry.AtlasBounds.Width > Dimensions.Width || Entry.AtlasBounds.Height > Dimensions.Height)
{
continue;
}
Textures.RemoveAt(i);
tex = Entry;
break;
}
// Quit if nothing fit.
if (tex == null)
{
return;
}
tex.AtlasBounds.X = Dimensions.X;
tex.AtlasBounds.Y = Dimensions.Y;
//Subdivide remaining space.
int HorizontalDifference = Dimensions.Width - tex.AtlasBounds.Width;
int VerticalDifference = Dimensions.Height - tex.AtlasBounds.Height;
if (HorizontalDifference == 0 && VerticalDifference == 0) //Perfect fit!
{
return;
}
Rectangle?ASpace = null;
Rectangle?BSpace = null;
// Subdivide the space on the shortest axis of the texture we just placed.
if (HorizontalDifference >= VerticalDifference)
{
ASpace = new Rectangle(Dimensions.X + tex.AtlasBounds.Width, Dimensions.Y, HorizontalDifference, Dimensions.Height);
// Remember that this isn't a perfect split - a chunk belongs to the placed texture.
if (VerticalDifference > 0)
{
BSpace = new Rectangle(Dimensions.X, Dimensions.Y + tex.AtlasBounds.Height, tex.AtlasBounds.Width, VerticalDifference);
}
}
else
{
ASpace = new Rectangle(Dimensions.X, Dimensions.Y + tex.AtlasBounds.Height, Dimensions.Width, VerticalDifference);
if (HorizontalDifference > 0)
{
BSpace = new Rectangle(Dimensions.X + tex.AtlasBounds.Width, Dimensions.Y, HorizontalDifference, tex.AtlasBounds.Height);
}
}
TryPlaceTextures(ASpace.Value, Textures);
if (BSpace.HasValue)
{
TryPlaceTextures(BSpace.Value, Textures);
}
}