工字钢纠结死了

panhao1 · 发表于 2012-12-10 02:10:04

本帖最后由 panhao1 于 2012-12-10 02:11 编辑

Mesh mesh = new Mesh();
x.FaceNormals.ComputeFaceNormals();
List<Curve> ls = new List<Curve>();
Rhino.Geometry.Collections.MeshTopologyEdgeList el = x.TopologyEdges;
for(int i = 0;i < el.Count;i++){
   Line L = el.EdgeLine(i);
   if (el.GetConnectedFaces(i).Length == 1) ls.Add(L.ToNurbsCurve());
}
Curve[] cs = Rhino.Geometry.Curve.JoinCurves(ls, doc.ModelAbsoluteTolerance * 10);
Vector3d v = new Vector3d(x.FaceNormals[0]);
v.Unitize();v /= 2;
PolylineCurve pl = cs[0].ToPolyline(0, 0, Math.PI, 99999, 0, 0, 0.1, 0, true);

for(int i = 0;i < pl.PointCount;i++){
   mesh.Vertices.Add(pl.Point(i) + v);
   mesh.Vertices.Add(pl.Point(i) - v);

   if(i < pl.PointCount - 1) mesh.Faces.AddFace(new MeshFace(i * 2, i * 2 + 1, i * 2 + 3, i * 2 + 2));
}
mesh.Faces.AddFace(new MeshFace(cs.Length * 2 - 2, cs.Length * 2 - 1, 1, 0));
mesh.Compact();
mesh.Normals.ComputeNormals();

A = mesh;