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0031570: Samples - add Qt samples similar to standard MFC samples

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Added Qt sample OCCTOverview providing examples of use of OCCT API with relevant code and demonstration of results in the viewer.

Off-topic: some unused images are removed from dox/introduction/images/
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asuraven
2020-05-26 14:16:46 +03:00
committed by bugmaster
parent 50ae6dad80
commit a2176e6524
142 changed files with 13409 additions and 24 deletions
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152
samples/OCCTOverview/code/TOcafFunction_CutDriver.cxx Normal file
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// Copyright (c) 2020 OPEN CASCADE SAS
//
// This file is part of the examples of the Open CASCADE Technology software library.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
#include "TOcafFunction_CutDriver.h"
#include <TNaming_NamedShape.hxx>
#include <TNaming_Builder.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <Standard_GUID.hxx>
#include <TCollection_AsciiString.hxx>
#include <TDF_Tool.hxx>
#include <TDF_Reference.hxx>
#include <TFunction_Logbook.hxx>
#include <Standard_WarningsDisable.hxx>
#include <QMessageBox>
#include <QApplication>
#include <QObject>
#include <Standard_WarningsRestore.hxx>
//=======================================================================
//function : GetID
//purpose :
//=======================================================================
const Standard_GUID& TOcafFunction_CutDriver::GetID()
{
static const Standard_GUID anID("22D22E52-D69A-11d4-8F1A-0060B0EE18E8");
return anID;
}
//=======================================================================
//function : Validate
//purpose :
//=======================================================================
void TOcafFunction_CutDriver::Validate (Handle(TFunction_Logbook)& log) const
{
// We validate the object label ( Label() ), all the arguments and the results of the object:
log->SetValid(Label(), Standard_True);
}
//=======================================================================
//function : MustExecute
//purpose :
//=======================================================================
Standard_Boolean TOcafFunction_CutDriver::MustExecute(const Handle(TFunction_Logbook)& log) const
{
// If the object's label is modified:
if (log->IsModified(Label())) return Standard_True;
// Cut (in our simple case) has two arguments: The original shape, and the tool shape.
// They are on the child labels of the cut's label:
// So, OriginalNShape - is attached to the first child label
// ToolNShape - is attached to the second child label,
// .
// Let's check them:
Handle(TDF_Reference) OriginalRef;
//TDF_Label aLabel = Label().FindChild(1);
/*
BOOL f = Label().IsNull();
int a = Label().NbChildren();
*/
TCollection_AsciiString aEntry;
TDF_Tool::Entry(Label(), aEntry);
std::cout << "Entry: " << aEntry.ToCString() << std::endl;
Label().FindChild(1).FindAttribute(TDF_Reference::GetID(), OriginalRef);
if (log->IsModified(OriginalRef->Get())) return Standard_True; // Original shape.
Handle(TDF_Reference) ToolRef;
Label().FindChild(2).FindAttribute(TDF_Reference::GetID(), ToolRef);
if (log->IsModified(ToolRef->Get())) return Standard_True; // Tool shape.
// if there are no any modifications concerned the cut,
// it's not necessary to recompute (to call the method Execute()):
return Standard_False;
}
//=======================================================================
//function : Execute
//purpose :
//=======================================================================
Standard_Integer TOcafFunction_CutDriver::Execute(Handle(TFunction_Logbook)& /*log*/) const
{
// Let's get the arguments (OriginalNShape, ToolNShape of the object):
// First, we have to retrieve the TDF_Reference attributes to obtain
// the root labels of the OriginalNShape and the ToolNShape:
Handle(TDF_Reference) OriginalRef, ToolRef;
if (!Label().FindChild(1).FindAttribute(TDF_Reference::GetID(), OriginalRef))
{
return 1;
}
TDF_Label OriginalLab = OriginalRef->Get();
if (!Label().FindChild(2).FindAttribute(TDF_Reference::GetID(), ToolRef))
{
return 1;
}
TDF_Label ToolLab = ToolRef->Get();
// Get the TNaming_NamedShape attributes of these labels
Handle(TNaming_NamedShape) OriginalNShape, ToolNShape;
if (!(OriginalLab.FindAttribute(TNaming_NamedShape::GetID(), OriginalNShape)))
{
throw Standard_Failure("TOcaf_Commands::CutObjects");
}
if (!(ToolLab.FindAttribute(TNaming_NamedShape::GetID(), ToolNShape)))
{
throw Standard_Failure("TOcaf_Commands::CutObjects");
}
// Now, let's get the TopoDS_Shape of these TNaming_NamedShape:
TopoDS_Shape OriginalShape = OriginalNShape->Get();
TopoDS_Shape ToolShape = ToolNShape->Get();
// STEP 2:
// Let's call for algorithm computing a cut operation:
BRepAlgoAPI_Cut mkCut(OriginalShape, ToolShape);
// Let's check if the Cut has been successful:
if (!mkCut.IsDone())
{
QMessageBox::critical(qApp->activeWindow(),
QObject::tr("Cut Function Driver"),
QObject::tr("Cut not done."));
return 2;
}
TopoDS_Shape ResultShape = mkCut.Shape();
// Build a TNaming_NamedShape using built cut
TNaming_Builder B(Label());
B.Modify(OriginalShape, ResultShape);
// That's all:
// If there are no any mistakes we return 0:
return 0;
}