How to slice a solid into faces

Hi Dustin,

For each result of your section cut, im imagining your feeding it a Solid and a plane.
it returns a shape, this may have more than one wire since you could have holes so the process to get a face should be.

get the section shape
create a brep makeface object
use topo explorer and loop through the wires
for each wire add it to the makeface object using the add wire function

at the end get the makeface.shape object.
display the face object.

hope this helps.

Best,

AlexP

Hi Dustin ,

This is a better way of doing the slices, but it takes a bit of time, the boolean operations are rather slow.

Best,

Alex

// *************************************************

void update()

{

if(EOS.IsNull())

{
QoccInputOutput* io_man = new QoccInputOutput();
QString filename = QFileDialog::getOpenFileName ( this,
tr("Import File"),"");

if (!(filename.length() > 0)) return;
Handle(TopTools_HSequenceOfShape) famshape1 = io_man->importSTEP(filename);
EOS = famshape1->Value(1);

}

double Xmin, Ymin, Zmin, Xmax, Ymax, Zmax;
Bnd_Box Bnd;
BRepBndLib::Add(EOS, Bnd);
Bnd.Get(Xmin, Ymin, Zmin, Xmax, Ymax, Zmax);

double width = abs(Xmax -Xmin);
double height = abs(Ymax -Ymin);
double depth = abs(Zmax -Zmin);

double slicecount = 100;

double sliceheight =(double) depth / slicecount;
gp_Pnt centerp((Xmin+Xmax)/2,(Ymin+Ymax)/2,(Zmin+Zmax)/2);

TopoDS_Compound slices;
BRep_Builder sliceB;
sliceB.MakeCompound(slices);

for(int i= 0;iAdd(aEdge,GeomAbs_Shape::GeomAbs_C0);
myfill->Build();
Result = myfill->Face();

return Result;
} else if ( edge.ShapeType() == TopAbs_ShapeEnum::TopAbs_WIRE)
{
BRepFill_Filling* myfill = new BRepFill_Filling();

TopExp_Explorer Ex;
for (Ex.Init(edge,TopAbs_EDGE); Ex.More(); Ex.Next())
{
TopoDS_Shape myshape = Ex.Current();
TopoDS_Edge aEdge = TopoDS::Edge(myshape);
myfill->Add(aEdge,GeomAbs_Shape::GeomAbs_C0);
}

myfill->Build();
Result = myfill->Face();

return Result;

}
return Result;

}

TopoDS_Shape HSF::BooleanCommon(TopoDS_Shape Stock,TopoDS_Shape Tool)
{
TopoDS_Shape Result;
try
{
Result = BRepAlgoAPI_Common(Stock,Tool);

}
catch(...)
{

}

return Result;

}