Basic question about AIS_Shape

Sorry Sharjith~ . My comunication skill is not good. I'm really sorry.

Todays, I work to make a TopoDS_Face result in BRepAlgoAPI_Cut. It's my requirement.

So, Explain my precedure using my code. i'm sorry.

1. Make a TopoDS_Edge object like a rectangle using 4 segment of Edge. Otherwise, Cirlce is made of TopoDS_Edge object . and then, Make a Handle(AIS_Shape) using by upper obejct. Of Course, I make a class for making these object(GeomSources class)

2. As You know, BRepAlgoAPI_Cut function act on 2D or 3D object. So I change the upper object in 2D like TopoDS_Face. In this procedure, I think it is very complicate for me

2-1. Select the object using mouse event (In mfc, OnMouseMove function). below is my code in OnMouseMove

// this function is to make a Rectangle during drag
DrawRectangle(DrawRectangleFirstPoint.x, DrawRectangleFirstPoint.y, point.x, point.y, Standard_False);

// if i put down Shift key, act
if(nFlags & MK_SHIFT)
{
GetDocument()->myAISContext->ShiftSelect(DrawRectangleFirstPoint.x, DrawRectangleFirstPoint.y, point.x, point.y, myView);

GetDocument()->myAISContext->InitSelected();

}
else
{
GetDocument()->myAISContext->Select(DrawRectangleFirstPoint.x,DrawRectangleFirstPoint.y, point.x, point.y, myView);

GetDocument()->myAISContext->InitSelected();
}

DrawRectangle(DrawRectangleFirstPoint.x, DrawRectangleFirstPoint.y, point.x, point.y,
Standard_True);

2-2 and then, Select object change for TopoDS_Face. it operate in GeomSources class below is my code.

void GeomSources::OnShapeFill(CProjectDoc* aDoc)
{

// make a object to store the selected Object
TopoDS_Shape SelectedTopoDSShape;

// make a List to make a wire
TopTools_ListOfShape ListOfShape;

for(aDoc->myAISContext->InitSelected();aDoc->myAISContext->MoreSelected();aDoc->myAISContext->NextSelected())
{

// if selected shape type is TopoDS_Edge, Append a list
if(aDoc->myAISContext->SelectedShape().ShapeType() == TopAbs_EDGE)
{
ListOfShape.Append(aDoc->myAISContext->SelectedShape());
}
}

// make a wire
BRepBuilderAPI_MakeWire BRepMakeWire;
BRepMakeWire.Add(ListOfShape);

// make a face
TopoDS_Face TopoDSFace = BRepBuilderAPI_MakeFace(BRepMakeWire.Wire());
Handle(AIS_Shape) AISCurrentShape = new AIS_Shape(TopoDSFace);

// As a results, CurrentObject is set by AIS_Shape
aDoc->myAISContext->SetCurrentObject(AISCurrentShape);
}

2-3 then, Store the object in TopTools_HSequenceOfShape Using Mouse LButton click. The reason why I make a TopTools_HSequenceOfShape is to check the Mouse click order and to save the shape date. of couse, I write the it in OnLButtonDown.

// Save the status of pick for preventing error
AIS_StatusOfPick StatusOfPick = GetDocument()->myAISContext->Select();
GetDocument()->myAISContext->InitSelected();

// If i click the object, excute this line
if(StatusOfPick != AIS_SOP_NothingSelected && StatusOfPick != AIS_SOP_Error)
{
TopoDS_Shape TempStoreTopoDSShape = GetDocument()->myAISContext->SelectedShape();

// Store the object if selected object type is TopAbs_Face
//
if(TempStoreTopoDSShape.ShapeType() == TopAbs_FACE)
{ FirstSelectedShape->Append(GetDocument()->myAISContext->SelectedShape());
}
}

4. Last, BRepAlgoAPI_Cut. my code is below.

void GeomSources::OperatorCut(CObjectDoc* aDoc, Handle(TopTools_HSequenceOfShape) FirstSelectedShape)
{

DisplayType TheDisplayType = No2D3D;

// excute this line if TopTools_HSequenceOfShape have data
if(FirstSelectedShape->Length() != 0)
{

// excute if first selected shape type is face
if(FirstSelectedShape->Value(1).ShapeType() == TopAbs_FACE)
{
Handle(AIS_Shape) FirstAISShape = new AIS_Shape(FirstSelectedShape->Value(1));

TopoDS_Shape LastSelectedShape = aDoc->myAISContext->SelectedShape();

if(LastSelectedShape.ShapeType() == TopAbs_FACE)
{

// BRepAlgoAPI_Cut
TopoDS_Shape ResultTopoDSShape = BRepAlgoAPI_Cut(FirstSelectedShape->Value(1), LastSelectedShape);

Handle(AIS_Shape) ResultAISShape = new AIS_Shape(ResultTopoDSShape);

// this line don't excute. I can't find why does it happen.
aDoc->myAISContext->Erase( FirstAISShape);

// this line also.
aDoc->myAISContext->Display(ResultAISShape);

}

FirstSelectedShape->Clear();
}
}

// this line is to update a view
PostProcess(aDoc,ID_GEOMETRY_BSPLINE,TheDisplayType /*0.02*/);
}

I'm sorry . It's very important job to me.. Do you get my requirement?

-Yeoncheol