Export an stl file after BRepOffsetAPI_MakeOffsetShape

Hello,

I want to use BRepOffsetAPI_MakeOffsetShape to offseting a shape which is loaded from an stl file.

The used code is as follows

TopoDS_Shape shape;

StlAPI_Reader reader;

TopoDS_Compound compound;

BRep_Builder aBuilder;

GeomAbs_JoinType joinType = GeomAbs_Arc;

reader.Read(shape, "shape.stl");

qDebug()<<"Reading stl file : "<<myTimer.elapsed()<<endl;

 

aBuilder.MakeCompound(compound);

//aBuilder.Add(compound, cube);

TopExp_Explorer aExpFace;

//Building the shell composed by faces

TopoDS_Shell aShell;

 

aBuilder.MakeShell(aShell);

int i=0;

 

for(aExpFace.Init(shape,TopAbs_FACE);aExpFace.More();aExpFace.Next())

{

 

TopoDS_Face aFace = TopoDS::Face(aExpFace.Current());

aBuilder.Add(aShell,aFace);

}

 

BRepBuilderAPI_Sewing sewOp;

sewOp.Load(aShell);

sewOp.Perform();

//Creation of the offset

//Offset along the positive normal

 

BRepOffsetAPI_MakeOffsetShape faceOffset3(sewOp.SewedShape(),1,1e-6,BRepOffset_Skin,false,false,joinType);

//BRepOffsetAPI_MakeOffset faceOffset3

if ( !faceOffset3.IsDone() )

{

cout << "error" << endl;

}