Added Layers and Entities true color property

ACadSharp/Color.cs

@@ -313,6 +313,7 @@ public bool IsByBlock
  /// </summary>
  public bool IsTrueColor => _color >= (1 << 30);
 
+
  /// <summary>
  /// Represents the actual stored color. Either a True Color or an indexed color.
  /// </summary>
@@ -415,8 +416,10 @@ public ReadOnlySpan<byte> GetTrueColorRgb()
  {
  return new ReadOnlySpan<byte>(BitConverter.GetBytes(_color), 0, 3);
  }
-
- return default;
+ else
+ {
+ return Color.GetIndexRGB(this.Index);
+ }
  }
 
  public bool Equals(Color other)

ACadSharp/IO/DWG/DwgStreamReaders/DwgMergedReader.cs

@@ -153,6 +153,8 @@ public XYZ Read3BitDoubleWithDefault(XYZ defValues)
 
  public Color ReadCmColor()
  {
+
+
  if (!(_mainReader is DwgStreamReaderAC18))
  return _mainReader.ReadCmColor();
 
@@ -162,8 +164,10 @@ public Color ReadCmColor()
  //CMC:
  //BS: color index(always 0)
  short colorIndex = ReadBitShort();
+
  //BL: RGB value
  int rgb = ReadBitLong();
+ Color color = GetColor(rgb);
 
  //RC : Color Byte
  byte id = ReadByte();
@@ -178,7 +182,30 @@ public Color ReadCmColor()
  if ((id & 2) == 2)
  bookName = ReadVariableText();
 
- return new Color(colorIndex);
+ return color;
+ }
+
+ public Color GetColor (int blColor)
+ {
+ byte[] values = BitConverter.GetBytes(blColor);
+ //if (!BitConverter.IsLittleEndian) Array.Reverse(values);
+ byte r = values[2];
+ byte g = values[1];
+ byte b = values[0];
+ byte acadColorIndex = values[0];
+
+ if (r == 0 && g == 0)
+ {
+ // AutoCAD indexed color
+ var trueColor = Color.GetIndexRGB(acadColorIndex);
+ return new Color(acadColorIndex);
+ }
+ else
+ {
+ // True color
+ return new Color(r, g, b);
+ }
+
  }
 
  public Color ReadEnColor(out Transparency transparency, out bool flag)

ACadSharp/IO/DWG/DwgStreamReaders/DwgObjectSectionReader.cs

@@ -12,6 +12,7 @@
 using System.Linq;
 using System.IO;
 using System;
+using System.Diagnostics;
 
 namespace ACadSharp.IO.DWG
 {

ACadSharp/IO/DWG/DwgStreamReaders/DwgStreamReaderAC18.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 
 namespace ACadSharp.IO.DWG
 {
@@ -55,7 +56,13 @@ public override Color ReadEnColor(out Transparency transparency, out bool flag)
  else if ((flags & 0x8000) > 0)
  {
  //Next value is a BS containing the RGB value(last 24 bits).
- color = new Color((short)this.ReadBitLong());
+ var blColor = this.ReadBitLong();
+ byte[] values = BitConverter.GetBytes(blColor);
+ byte r = values[2];
+ byte g = values[1];
+ byte b = values[0];
+ color = new Color(r, g, b); 
+
  }
  else
  {