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modeling/elementremoval/main.cxx

Refer to the Element Removal Example.

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2021, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
//
// You may use this file under the terms of the BSD license as follows:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// ****************************************************************************
#include <cadex/Base_UTF16String.hxx>
#include <cadex/LicenseManager_Activate.h>
#include <cadex/ModelData_Assembly.hxx>
#include <cadex/ModelData_Instance.hxx>
#include <cadex/ModelData_Model.hxx>
#include <cadex/ModelData_Part.hxx>
#include <iostream>
#include <stack>
#include <unordered_map>
#include <vector>
#include "../../cadex_license.cxx"
using namespace std;
using namespace cadex;
class RemovedSGEFinder : public ModelData_Model::VoidElementVisitor
{
public:
typedef std::unordered_map <ModelData_Assembly,
std::vector <ModelData_Instance>,
ModelData_BaseObjectHash> RemovedSGEMapType;
explicit RemovedSGEFinder (const Base_UTF16String& theNameToRemove) :
myNameToRemove (theNameToRemove)
{}
// Non-root SGEs that can be removed are under assemblies. Iterate
// through the assembly's child instances and find those that reference
// SGEs with given name
bool VisitEnter (const ModelData_Assembly& theElement) override
{
for (ModelData_Model::ElementIterator anIt (theElement); anIt.HasNext();) {
ModelData_Instance aChild = static_cast <ModelData_Instance&> (anIt.Next());
if (!aChild.Reference().IsNull() && aChild.Reference().Name() == myNameToRemove) {
mySGEsToRemove[theElement].push_back (aChild);
}
}
return true;
}
RemovedSGEMapType& SGEsToRemove()
{
return mySGEsToRemove;
}
private:
Base_UTF16String myNameToRemove;
RemovedSGEMapType mySGEsToRemove;
};
int main (int argc, char** argv)
{
auto aKey = LicenseKey::Value();
// Activate the license (aKey must be defined in cadex_license.cxx)
if (!CADExLicense_Activate (aKey)) {
cerr << "Failed to activate CAD Exchanger license." << endl;
return 1;
}
// Get the input
if (argc != 4) {
cerr << "Usage: " << argv[0] << " <input_file> <output_file> <sge_to_remove>, where:" << endl;
cerr << " <input_file> is a name of the XML file to be read" << endl;
cerr << " <input_file> is a name of the XML file where the output should be stored" << endl;
cerr << " <sge_to_remove> is a name of the scene graph elements to remove" << endl;
return 1;
}
const char* aSource = argv[1];
const char* anOutput = argv[2];
// Load the model
if (!aModel.Open (aSource)) {
cerr << "Failed to read the file " << aSource << endl;
return 1;
}
// Remove roots with specified name
const char* aNameToRemove = argv[3];
std::vector <ModelData_SceneGraphElement> aRootsToRemove;
for (ModelData_Model::ElementIterator anIt (aModel); anIt.HasNext();) {
const auto& anElement = anIt.Next();
if (anElement.Name() == aNameToRemove) {
aRootsToRemove.push_back (anElement);
}
}
for (const auto& aRootToRemove : aRootsToRemove) {
aModel.RemoveRoot (aRootToRemove);
}
// Find the rest of scene graph elements that need to be removed and their parents
RemovedSGEFinder aFinder (aNameToRemove);
aModel.Accept (aFinder);
// Perform the recorded removals of non-root SGEs
auto& anSGEsToRemove = aFinder.SGEsToRemove();
for (const auto& aParentWithChildren : anSGEsToRemove) {
auto aParent = aParentWithChildren.first;
const auto& aChildrenToRemove = aParentWithChildren.second;
for (const auto& aChildToRemove : aChildrenToRemove) {
aParent.RemoveInstance (aChildToRemove);
}
}
// Save the result
aModel.Save (anOutput);
return 0;
}