/// <summary>
/// Read from an existing atlas and decode it as multiple squaresprite;
/// should contain one image and one meta file
/// </summary>
/// <param name="AtlasPath">
/// the path of atlas
/// </param>
/// <returns></returns>
public static TexImage SingleReadFromAtlas(string AtlasPath, string SpriteName)
{
string AtlasMeta = AtlasPath + ".meta";
if (!File.Exists(AtlasPath))
{
Console.WriteLine("atlas image lost!");
return(null);
}
if (!File.Exists(AtlasMeta))
{
Console.WriteLine("atlas metafile lost!");
return(null);
}
Texture texture = TextureSet.Generate_texture(AtlasPath);
TexImage texImage = null;
BinaryReader metafile = new BinaryReader(File.Open(AtlasMeta, FileMode.Open));
TexImageInfo texImageInfo = new TexImageInfo();
while (metafile.BaseStream.Position != metafile.BaseStream.Length)
{
try
{
texImageInfo.BinaryRead(metafile);
}
catch (Exception ex)
{
Console.WriteLine("metafile corrupt!!" + ex.ToString());
return(null);
}
if (texImageInfo.filename == SpriteName)
{
texImage = new TexImage(texture, texImageInfo.filename, texImageInfo.LeftBottomLocation, texImageInfo.TopRightLocation);
break;
}
}
metafile.Close();
return(texImage);
}
/// <summary>
/// Read from an existing atlas and decode it as multiple bitmap
/// should contain one image and one meta file
/// </summary>
/// <param name="AtlasPath">
/// the path of atlas
/// </param>
/// <returns></returns>
public static Dictionary <string, Bitmap> ReadFromAtlasToBitmap(string AtlasPath)
{
string AtlasMeta = AtlasPath + ".meta";
if (!File.Exists(AtlasPath))
{
Console.WriteLine("atlas image lost!");
return(null);
}
if (!File.Exists(AtlasMeta))
{
Console.WriteLine("atlas metafile lost!");
return(null);
}
Dictionary <string, Bitmap> keyValuePairs = new Dictionary <string, Bitmap>();
Image <Rgba32> Origin_image = Image.Load <Rgba32>(AtlasPath);
BinaryReader metafile = new BinaryReader(File.Open(AtlasMeta, FileMode.Open));
TexImageInfo texImageInfo = new TexImageInfo();
while (metafile.BaseStream.Position != metafile.BaseStream.Length)
{
try
{
texImageInfo.BinaryRead(metafile);
}
catch (Exception ex)
{
Console.WriteLine("metafile corrupt!!" + ex.ToString());
return(null);
}
int SubImageWidth = texImageInfo.TopRightLocation.X - texImageInfo.LeftBottomLocation.X + 1;
int SubImageHeight = texImageInfo.TopRightLocation.Y - texImageInfo.LeftBottomLocation.Y + 1;
Image <Rgba32> image = new Image <Rgba32>(SubImageWidth, SubImageHeight);
for (int i = 0; i < SubImageWidth; i++)
{
for (int j = 0; j < SubImageHeight; j++)
{
try
{
image[i, j] = Origin_image[texImageInfo.LeftBottomLocation.X + i, Origin_image.Height - texImageInfo.TopRightLocation.Y + j];
}
catch (Exception ex)
{
Console.WriteLine("error convert atlas to bitmap" + ex.ToString());
return(null);
}
}
}
//image.Mutate(i => i.Crop(new SixLabors.ImageSharp.Rectangle(LeftBottomLocation.X, Origin_image.Height - TopRightLocation.Y , SubImageWidth, SubImageHeight)));
using (var memoryStream = new MemoryStream())
{
image.Save(memoryStream, new PngEncoder());
memoryStream.Seek(0, SeekOrigin.Begin);
keyValuePairs.Add(texImageInfo.filename, new Bitmap(memoryStream));
}
image.Dispose();
}
Origin_image.Dispose();
metafile.Close();
return(keyValuePairs);
}
