private static LayerStateProperties ReadLayerProperties(TextCodeValueReader chunk)
{
LayerPropertiesFlags flags = LayerPropertiesFlags.Plot;
string lineType = String.Empty;
//string plotStyle = string.Empty;
AciColor color = AciColor.Default;
Lineweight lineweight = Lineweight.Default;
Transparency transparency = new Transparency(0);
string name = chunk.ReadString();
chunk.Next();
while (chunk.Code != 8 && chunk.Code != 0)
{
switch (chunk.Code)
{
case 90:
flags = (LayerPropertiesFlags)chunk.ReadInt();
chunk.Next();
break;
case 62:
color = AciColor.FromCadIndex(chunk.ReadShort());
chunk.Next();
break;
case 370:
lineweight = (Lineweight)chunk.ReadShort();
chunk.Next();
break;
case 6:
lineType = chunk.ReadString();
chunk.Next();
break;
case 2:
//plotStyle = chunk.ReadString();
chunk.Next();
break;
case 440:
int alpha = chunk.ReadInt();
transparency = alpha == 0 ? new Transparency(0) : Transparency.FromAlphaValue(alpha);
chunk.Next();
break;
case 92:
color = AciColor.FromTrueColor(chunk.ReadInt());
chunk.Next();
break;
default:
chunk.Next();
break;
}
}
if (string.IsNullOrEmpty(name))
{
return(null);
}
LayerStateProperties properties = new LayerStateProperties(name)
{
Flags = flags,
Color = color,
Lineweight = lineweight,
LinetypeName = lineType,
//PlotStyleName = plotStyle,
Transparency = transparency
};
return(properties);
}
private void SetAttributes(EntityObject entity, IGeoObject go)
{
if (go is IColorDef cd && cd.ColorDef != null)
{
AciColor clr;
if (cd.ColorDef.Color.ToArgb().Equals(Color.White.ToArgb()) || cd.ColorDef.Color.ToArgb().Equals(Color.Black.ToArgb()))
{
clr = AciColor.Default;
}
else
{
clr = AciColor.FromTrueColor(cd.ColorDef.Color.ToArgb());
if (clr.Index > 0 && clr.Index < 256)
{
var indexColor = AciColor.FromCadIndex(clr.Index);
if (indexColor.ToColor().ToArgb().Equals(cd.ColorDef.Color.ToArgb()))
{
// if the color matches the index color exactly
// we don't need to use TruColor
clr.UseTrueColor = false;
}
}
}
entity.Color = clr;
}
if (go.Layer != null)
{
if (!createdLayers.TryGetValue(go.Layer, out netDxf.Tables.Layer layer))
{
layer = new netDxf.Tables.Layer(go.Layer.Name);
doc.Layers.Add(layer);
createdLayers[go.Layer] = layer;
}
entity.Layer = layer;
}
if (go is ILinePattern lp)
{
if (!createdLinePatterns.TryGetValue(lp.LinePattern, out Linetype linetype))
{
List <LinetypeSegment> segments = new List <LinetypeSegment>();
if (lp.LinePattern.Pattern != null)
{
for (int i = 0; i < lp.LinePattern.Pattern.Length; i++)
{
LinetypeSegment ls;
if ((i & 0x01) == 0)
{
ls = new LinetypeSimpleSegment(lp.LinePattern.Pattern[i]);
}
else
{
ls = new LinetypeSimpleSegment(-lp.LinePattern.Pattern[i]);
}
segments.Add(ls);
}
}
linetype = new Linetype(lp.LinePattern.Name);
linetype.Segments.AddRange(segments);
doc.Linetypes.Add(linetype);
createdLinePatterns[lp.LinePattern] = linetype;
}
entity.Linetype = linetype;
}
if (go is ILineWidth lw)
{
double minError = double.MaxValue;
Lineweight found = Lineweight.Default;
foreach (Lineweight lwe in Enum.GetValues(typeof(Lineweight)))
{
double err = Math.Abs(((int)lwe) / 100.0 - lw.LineWidth.Width);
if (err < minError)
{
minError = err;
found = lwe;
}
}
entity.Lineweight = found;
}
}
