private static void extractContours(Surface surf)
{
if (surf is TinSurface)
{
if (surf.IsReferenceObject)
{
Autodesk.AutoCAD.ApplicationServices.Application.ShowAlertDialog(string.Format("Surface {0} is from {1}", surf.Name, surf.OwnerId.ToString()));
return;
}
TinSurface tinSurf = (TinSurface)surf;
string nameSurf = tinSurf.Name;
ObjectId idStyle = tinSurf.StyleId;
SurfaceStyle style = Surf_Styles.getSurfaceStyle(idStyle);
double majorInt = style.ContourStyle.MajorContourInterval;
double minorInt = style.ContourStyle.MinorContourInterval;
DisplayStyle planDispStyle = style.GetDisplayStylePlan(SurfaceDisplayStyleType.MajorContour);
string majorLay = planDispStyle.Layer;
planDispStyle = style.GetDisplayStylePlan(SurfaceDisplayStyleType.MinorContour);
string minorLay = planDispStyle.Layer;
ObjectIdCollection idsContours = tinSurf.ExtractContours(minorInt);
Color color = new Color();
color = Color.FromColorIndex(ColorMethod.ByLayer, 256);
using (Transaction tr = BaseObjs.startTransactionDb()) {
foreach (ObjectId id in idsContours)
{
Polyline poly = (Polyline)tr.GetObject(id, OpenMode.ForRead);
double elev = System.Math.Round(poly.Elevation, 2);
if ((elev / majorInt).mantissa() == 0)
{
id.changeProp(color, majorLay, LineWeight.LineWeight030);
}
else
{
id.changeProp(color, minorLay, LineWeight.LineWeight020);
}
}
tr.Commit();
}
}
}