public static double _GetLength3d(this BrepLoop loop)
{
double res = 0;
foreach (var trim in loop.Trims_ThreadSafe())
{
if (trim.TrimType == BrepTrimType.Singular)
{
continue;
}
res += trim.Edge._GetLength_ThreadSafe();
}
return(res);
}
public static Curve[] _GetJoinedEdges(this BrepLoop loop, double tol = 1)
{
var crvs = new List <Curve>();
foreach (var trim in loop.Trims_ThreadSafe())
{
if (trim.TrimType == BrepTrimType.Singular)
{
continue;
}
var crv3d = trim.Edge._Complexify(100);
crvs.Add(crv3d);
}
var res = Curve.JoinCurves(crvs, tol);
return(res);
}
public static Curve[] _GetJoinedTrims3d(this BrepLoop loop, double tol = 1)
{
var crvs = new List <Curve>();
foreach (var trim in loop.Trims_ThreadSafe())
{
if (trim.TrimType == BrepTrimType.Singular)
{
continue;
}
//var crv3d = Srf._Convert2dCurveTo3d(trim.Crv);
var crv3d = trim._2dTo3d(trim._Srf())._Complexify(100);
crvs.Add(crv3d);
}
var res = Curve.JoinCurves(crvs, tol);
return(res);
}
/// <summary>
/// Return index of vertexes used by this loop
/// </summary>
/// <param name="loop"></param>
/// <param name="indexesCircular">each index that will be in this list point to circular vertexes: crv start and end points are same - zero length or cirvular or wrong defined points</param>
/// <returns></returns>
public static List <int> _GetVertexesIndex(this BrepLoop loop, out List <int> indexesCircular)
{
var vertices = loop.Brep.Vertices;
var indexes = new List <int>();
indexesCircular = new List <int>(); //crv start and end points are same - zero length or cirvular or wrong defined points
foreach (var t in loop.Trims_ThreadSafe())
{
//check for supported trim types
switch (t.TrimType)
{
case BrepTrimType.Boundary:
case BrepTrimType.Mated:
case BrepTrimType.Seam:
case BrepTrimType.Singular:
break;
default:
throw new Exception("Exception: class _BrepLoop._GetVertexesIndex - Not supported type in trims: " + t.ObjectType);
}
int indexBegin = t._StartVertexIndex();
if (!indexes.Contains(indexBegin))
{
indexes.Add(indexBegin);
}
int indexEnd = t._EndVertexIndex();
if (!indexes.Contains(indexEnd))
{
indexes.Add(indexEnd);
}
if (indexBegin == indexEnd && t.TrimType != BrepTrimType.Singular)
{
indexesCircular.Add(indexBegin);
}
}
indexes.Sort();
return(indexes);
}