public Polycurve PolycurveToSpeckle(AcadDB.Polyline polyline) // AC polylines are polycurves with linear or arc segments
{
var polycurve = new Polycurve(units: ModelUnits)
{
closed = polyline.Closed
};
// extract segments
var segments = new List <ICurve>();
for (int i = 0; i < polyline.NumberOfVertices; i++)
{
SegmentType type = polyline.GetSegmentType(i);
switch (type)
{
case SegmentType.Line:
segments.Add(LineToSpeckle(polyline.GetLineSegmentAt(i)));
break;
case SegmentType.Arc:
segments.Add(ArcToSpeckle(polyline.GetArcSegmentAt(i)));
break;
}
}
polycurve.segments = segments;
polycurve.length = polyline.Length;
polycurve.bbox = BoxToSpeckle(polyline.GeometricExtents, true);
return(polycurve);
}
// Polycurves
public Polyline PolylineToSpeckle(AcadDB.Polyline polyline) // AC polylines can have arc segments, this treats all segments as lines
{
List <Point3d> vertices = new List <Point3d>();
for (int i = 0; i < polyline.NumberOfVertices; i++)
{
vertices.Add(polyline.GetPoint3dAt(i));
}
if (polyline.Closed)
{
vertices.Add(polyline.GetPoint3dAt(0));
}
var _polyline = new Polyline(PointsToFlatArray(vertices), ModelUnits);
_polyline.closed = polyline.Closed;
_polyline.length = polyline.Length;
_polyline.bbox = BoxToSpeckle(polyline.GeometricExtents, true);
return(_polyline);
}
public AcadDB.Polyline PolycurveToNativeDB(Polycurve polycurve) //polylines can only support curve segments of type circular arc
{
AcadDB.Polyline polyline = new AcadDB.Polyline()
{
Closed = polycurve.closed
};
var plane = new Autodesk.AutoCAD.Geometry.Plane(Point3d.Origin, Vector3d.ZAxis.TransformBy(Doc.Editor.CurrentUserCoordinateSystem)); // TODO: check this
// add all vertices
for (int i = 0; i < polycurve.segments.Count; i++)
{
var segment = polycurve.segments[i];
switch (segment)
{
case Line o:
polyline.AddVertexAt(i, PointToNative(o.start).Convert2d(plane), 0, 0, 0);
if (!polycurve.closed && i == polycurve.segments.Count - 1)
{
polyline.AddVertexAt(i + 1, PointToNative(o.end).Convert2d(plane), 0, 0, 0);
}
break;
case Arc o:
var bulge = Math.Tan((double)(o.endAngle - o.startAngle) / 4); // bulge
polyline.AddVertexAt(i, PointToNative(o.startPoint).Convert2d(plane), bulge, 0, 0);
if (!polycurve.closed && i == polycurve.segments.Count - 1)
{
polyline.AddVertexAt(i + 1, PointToNative(o.endPoint).Convert2d(plane), 0, 0, 0);
}
break;
default:
throw new Speckle.Core.Logging.SpeckleException("Polycurve segment is not a line or arc!");
}
}
return(polyline);
}
