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occt/src/XCAFDoc/XCAFDoc_MaterialTool.cxx
mpv c99ad5d760 0030773: Application Framework - To allow to inherit existing attributes to reuse persistence mechanisms 
Added possibility to inherit existing attributes if the same persistent fields are used. All methods that allow controlling the data model changes or getting some callbacks may be overridden in successor. They may have same GUIDs as a base class or new ones.

Special macros IMPLEMENT_DERIVED_ATTRIBUTE and IMPLEMENT_DERIVED_ATTRIBUTE_WITH_TYPE must be used instead of standard Handle macro definition IMPLEMENT_STANDARD_RTTIEXT to register new derived attributes.

Using this improvement several existing attributes from TDataStd, TDataXtd and XCAFDoc packages become inherited from other base attribute-classes. XML and Bin drivers of these attributes are removed. New base attribute classes are added: TDataStd_GenericEmpty and TDataStd_GenericExtString.

This improvement does not change both present formats Bin and XML documents. The obsolete Standard scheme is not changed at all.
2020-09-12 20:42:18 +03:00

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// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <XCAFDoc_MaterialTool.hxx>
#include <Standard_GUID.hxx>
#include <Standard_Type.hxx>
#include <TCollection_HAsciiString.hxx>
#include <TDataStd_Name.hxx>
#include <TDataStd_TreeNode.hxx>
#include <TDF_Attribute.hxx>
#include <TDF_ChildIDIterator.hxx>
#include <TDF_Label.hxx>
#include <TDF_RelocationTable.hxx>
#include <XCAFDoc.hxx>
#include <XCAFDoc_DocumentTool.hxx>
#include <XCAFDoc_Material.hxx>
#include <XCAFDoc_ShapeTool.hxx>
IMPLEMENT_DERIVED_ATTRIBUTE_WITH_TYPE(XCAFDoc_MaterialTool,TDataStd_GenericEmpty,"xcaf","MaterialTool")
//=======================================================================
//function : XCAFDoc_MaterialTool
//purpose :
//=======================================================================
XCAFDoc_MaterialTool::XCAFDoc_MaterialTool()
{
}
//=======================================================================
//function : Set
//purpose :
//=======================================================================
Handle(XCAFDoc_MaterialTool) XCAFDoc_MaterialTool::Set(const TDF_Label& L)
{
Handle(XCAFDoc_MaterialTool) A;
if (!L.FindAttribute (XCAFDoc_MaterialTool::GetID(), A)) {
A = new XCAFDoc_MaterialTool ();
L.AddAttribute(A);
A->myShapeTool = XCAFDoc_DocumentTool::ShapeTool(L);
}
return A;
}
//=======================================================================
//function : GetID
//purpose :
//=======================================================================
const Standard_GUID& XCAFDoc_MaterialTool::GetID()
{
static Standard_GUID MatTblID ("efd212f9-6dfd-11d4-b9c8-0060b0ee281b");
return MatTblID;
}
//=======================================================================
//function : BaseLabel
//purpose :
//=======================================================================
TDF_Label XCAFDoc_MaterialTool::BaseLabel() const
{
return Label();
}
//=======================================================================
//function : ShapeTool
//purpose :
//=======================================================================
const Handle(XCAFDoc_ShapeTool)& XCAFDoc_MaterialTool::ShapeTool()
{
if(myShapeTool.IsNull())
myShapeTool = XCAFDoc_DocumentTool::ShapeTool(Label());
return myShapeTool;
}
//=======================================================================
//function : IsMaterial
//purpose :
//=======================================================================
Standard_Boolean XCAFDoc_MaterialTool::IsMaterial(const TDF_Label& lab) const
{
Handle(XCAFDoc_Material) MatAttr;
if(lab.FindAttribute(XCAFDoc_Material::GetID(),MatAttr)) {
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : GetMaterialLabels
//purpose :
//=======================================================================
void XCAFDoc_MaterialTool::GetMaterialLabels(TDF_LabelSequence& Labels) const
{
Labels.Clear();
TDF_ChildIterator ChildIterator( Label() );
for (; ChildIterator.More(); ChildIterator.Next()) {
TDF_Label L = ChildIterator.Value();
if ( IsMaterial(L)) Labels.Append(L);
}
}
//=======================================================================
//function : AddMaterial
//purpose :
//=======================================================================
TDF_Label XCAFDoc_MaterialTool::AddMaterial(const Handle(TCollection_HAsciiString)& aName,
const Handle(TCollection_HAsciiString)& aDescription,
const Standard_Real aDensity,
const Handle(TCollection_HAsciiString)& aDensName,
const Handle(TCollection_HAsciiString)& aDensValType) const
{
TDF_Label MatL;
TDF_TagSource aTag;
MatL = aTag.NewChild ( Label() );
XCAFDoc_Material::Set(MatL,aName,aDescription,aDensity,aDensName,aDensValType);
TDataStd_Name::Set(MatL,TCollection_AsciiString(aName->ToCString()));
return MatL;
}
//=======================================================================
//function : SetMaterial
//purpose :
//=======================================================================
void XCAFDoc_MaterialTool::SetMaterial(const TDF_Label& L,const TDF_Label& MatL) const
{
// set reference
Handle(TDataStd_TreeNode) refNode, mainNode;
mainNode = TDataStd_TreeNode::Set ( MatL, XCAFDoc::MaterialRefGUID() );
refNode = TDataStd_TreeNode::Set ( L, XCAFDoc::MaterialRefGUID() );
refNode->Remove(); // abv: fix against bug in TreeNode::Append()
mainNode->Append(refNode);
}
//=======================================================================
//function : SetMaterial
//purpose :
//=======================================================================
void XCAFDoc_MaterialTool::SetMaterial(const TDF_Label& L,
const Handle(TCollection_HAsciiString)& aName,
const Handle(TCollection_HAsciiString)& aDescription,
const Standard_Real aDensity,
const Handle(TCollection_HAsciiString)& aDensName,
const Handle(TCollection_HAsciiString)& aDensValType) const
{
TDF_Label MatL = AddMaterial(aName,aDescription,aDensity,aDensName,aDensValType);
SetMaterial(L,MatL);
}
//=======================================================================
//function : GetMaterial
//purpose :
//=======================================================================
Standard_Boolean XCAFDoc_MaterialTool::GetMaterial(const TDF_Label& MatL,
Handle(TCollection_HAsciiString)& aName,
Handle(TCollection_HAsciiString)& aDescription,
Standard_Real& aDensity,
Handle(TCollection_HAsciiString)& aDensName,
Handle(TCollection_HAsciiString)& aDensValType) const
{
Handle(XCAFDoc_Material) MatAttr;
if(!MatL.FindAttribute(XCAFDoc_Material::GetID(),MatAttr)) {
return Standard_False;
}
aName = MatAttr->GetName();
aDescription = MatAttr->GetDescription();
aDensity = MatAttr->GetDensity();
aDensName = MatAttr->GetDensName();
aDensValType = MatAttr->GetDensValType();
return Standard_True;
}
//=======================================================================
//function : GetDensityForShape
//purpose :
//=======================================================================
Standard_Real XCAFDoc_MaterialTool::GetDensityForShape(const TDF_Label& ShapeL)
{
Standard_Real Dens=0.0;
Handle(TDataStd_TreeNode) Node;
if ( ! ShapeL.FindAttribute ( XCAFDoc::MaterialRefGUID(), Node) ||
! Node->HasFather() ) return Dens;
TDF_Label MatL = Node->Father()->Label();
Handle(XCAFDoc_Material) MatAttr;
if(!MatL.FindAttribute(XCAFDoc_Material::GetID(),MatAttr)) {
return Dens;
}
// defaul dimension fo density - gram/sm^3
// we transfer "sm" into "mm"
Dens = MatAttr->GetDensity()*0.001;
return Dens;
}
//=======================================================================
//function : ID
//purpose :
//=======================================================================
const Standard_GUID& XCAFDoc_MaterialTool::ID() const
{
return GetID();
}
//=======================================================================
//function : DumpJson
//purpose :
//=======================================================================
void XCAFDoc_MaterialTool::DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth) const
{
OCCT_DUMP_TRANSIENT_CLASS_BEGIN (theOStream)
OCCT_DUMP_BASE_CLASS (theOStream, theDepth, TDF_Attribute)
OCCT_DUMP_FIELD_VALUES_DUMPED (theOStream, theDepth, myShapeTool.get())
}
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