/// <summary>
/// Called internally by the serializer when the image content is to be embedded into the JSON document.
/// </summary>
internal void _WriteToInternal()
{
if (_SatelliteImageContent == null)
{
_WriteAsBufferView(); return;
}
var imimg = new Memory.InMemoryImage(_SatelliteImageContent);
_mimeType = imimg.MimeType;
_uri = imimg.ToMime64();
}
private static IReadOnlyDictionary <Material, string> _WriteMaterials(IDictionary <String, BYTES> files, string baseName, IEnumerable <Material> materials)
{
// write all image files
var images = materials
.Select(item => item.DiffuseTexture)
.Where(item => item.Array != null)
.Distinct(new _ArraySegmentEqualityComparer <Byte>());
bool firstImg = true;
foreach (var img in images)
{
var imimg = new Memory.InMemoryImage(img);
var imgName = firstImg ? baseName : $"{baseName}_{files.Count}.{imimg.FileExtension}";
files[imgName] = img;
firstImg = false;
}
// write materials
var mmap = new Dictionary <Material, string>();
var sb = new StringBuilder();
foreach (var m in materials)
{
mmap[m] = $"Material_{mmap.Count}";
sb.AppendLine($"newmtl {mmap[m]}");
sb.AppendLine("illum 2");
sb.AppendLine(Invariant($"Ka {m.DiffuseColor.X} {m.DiffuseColor.Y} {m.DiffuseColor.Z}"));
sb.AppendLine(Invariant($"Kd {m.DiffuseColor.X} {m.DiffuseColor.Y} {m.DiffuseColor.Z}"));
sb.AppendLine(Invariant($"Ks {m.SpecularColor.X} {m.SpecularColor.Y} {m.SpecularColor.Z}"));
if (m.DiffuseTexture.Array != null)
{
var imgName = files.FirstOrDefault(kvp => kvp.Value.SequenceEqual(m.DiffuseTexture)).Key;
sb.AppendLine($"map_Kd {imgName}");
}
sb.AppendLine();
}
// write material library
_WriteTextContent(files, baseName + ".mtl", sb);
return(mmap);
}
/// <summary>
/// Initializes this <see cref="Image"/> with an image stored in a <see cref="Byte"/> array.
/// </summary>
/// <param name="content">A <see cref="Byte"/> array containing a PNG or JPEG image.</param>
public void SetSatelliteContent(Byte[] content)
{
Guard.NotNull(content, nameof(content));
var imimg = new Memory.InMemoryImage(content);
if (!imimg.IsValid)
{
throw new ArgumentException($"{nameof(content)} must be a PNG, JPG, DDS or WEBP image", nameof(content));
}
string imageType = imimg.MimeType;
_DiscardContent();
this._SatelliteImageContent = content;
}
/// <summary>
/// Called internally by the serializer when the image content is to be written as an external file
/// </summary>
/// <param name="writer">The satellite asset writer</param>
/// <param name="satelliteUri">A local satellite URI</param>
internal void _WriteToSatellite(IO.WriteContext writer, string satelliteUri)
{
if (_SatelliteImageContent == null)
{
_WriteAsBufferView();
return;
}
_mimeType = null;
var imimg = new Memory.InMemoryImage(_SatelliteImageContent);
if (!imimg.IsValid)
{
throw new InvalidOperationException();
}
_uri = System.IO.Path.ChangeExtension(satelliteUri, imimg.FileExtension);
writer.WriteAllBytesToEnd(_uri, imimg.GetBuffer());
}
