private (string LayerName, MarkGeometryCircle Circle) ParseCircle(AdvancedLineStreamReader readerIn)
{
var(success, layerName) = ReadLayerName(readerIn, "AcDbCircle");
if (success)
{
var result1 = readerIn.FindConsecutiveLines(
"100",
"AcDbCircle"
);
if (!result1.Success)
{
return(null, null);
}
}
var centrePoint = ReadPointFast(readerIn);
// read radius 40
readerIn.ReadLine();
double radius = double.Parse(readerIn.ReadLine());
var circle = new MarkGeometryCircle(centrePoint, radius);
return(layerName, circle);
}
protected static List <MVertex> ToVertexes(MarkGeometryCircle circle)
{
var vtx = new List <MVertex>(circle.VertexCount + 1);
for (int i = 0; i <= circle.VertexCount; i++)
{
vtx.Add(new MVertex(
(circle.CentrePoint.X + (circle.Radius * Math.Cos(i * Math.PI * 2 / circle.VertexCount))), (circle.CentrePoint.Y + (circle.Radius * Math.Sin(i * Math.PI * 2 / circle.VertexCount)))
));
}
return(vtx);
}
private static (string Layer, IMarkGeometry Geometry) TryParseCircle(StreamReader readerIn)
{
string layerName = null;
IMarkGeometry geometry = null;
while (true)
{
var(found, line) = SkipUntil(readerIn, MatchLayerOrCircle);
if (!found)
{
break;
}
switch (MatchLayerOrCircle.Match(line).Value.Trim())
{
case "8":
layerName = readerIn.ReadLine();
break;
case "AcDbCircle":
MarkGeometryPoint centre = TryParsePoint(readerIn);
if (centre == null)
{
throw new Exception("Failed to parse centre point of arc");
}
if (!SkipUntil(readerIn, MatchGroupCodeForRadius).Found)
{
throw new Exception("Failed to parse arc radius");
}
double radius = double.Parse(readerIn.ReadLine());
geometry = new MarkGeometryCircle(centre, radius)
{
LayerName = layerName
};
return(layerName, geometry);
default:
throw new Exception($"Matched circle attribute is not supported: `{line}`");
}
}
return(layerName, geometry);
}
