vrml1_group.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2016 Cirilo Bernardo <[email protected]>
 * Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
// note: this was copied from the vrml1_separator class. the difference
// between a separator and a group is that a group propagates its
// current settings to its parent. While it would be possible to
// implement the separator as a derived class, it is easy enough to
// simply duplicate the code
 
#include <iostream>
#include <sstream>
#include <wx/log.h>
 
#include "vrml1_base.h"
#include "vrml1_group.h"
#include "plugins/3dapi/ifsg_all.h"
 
 
WRL1GROUP::WRL1GROUP( NAMEREGISTER* aDictionary ) : WRL1NODE( aDictionary )
{
 m_Type = WRL1NODES::WRL1_GROUP;
}
 
 
WRL1GROUP::WRL1GROUP( NAMEREGISTER* aDictionary, WRL1NODE* aParent ) :
 WRL1NODE( aDictionary )
{
 m_Type = WRL1NODES::WRL1_GROUP;
 m_Parent = aParent;
 
 if( nullptr != m_Parent )
 m_Parent->AddChildNode( this );
}
 
 
WRL1GROUP::~WRL1GROUP()
{
 wxLogTrace( traceVrmlPlugin,
 wxT( " * [INFO] Destroying Group with %zu children, %zu references, and %zu "
 "back pointers." ),
 m_Children.size(), m_Refs.size(), m_BackPointers.size() );
}
 
 
bool WRL1GROUP::Read( WRLPROC& proc, WRL1BASE* aTopNode )
{
 if( nullptr == aTopNode )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 " * [BUG] aTopNode is NULL" ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 
 char tok = proc.Peek();
 
 if( proc.eof() )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; unexpected eof %s." ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition() );
 
 return false;
 }
 
 if( '{' != tok )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; expecting '{' but got '%s' %s." ),
 __FILE__, __FUNCTION__, __LINE__, tok, proc.GetFilePosition() );
 
 return false;
 }
 
 proc.Pop();
 
 while( true )
 {
 if( proc.Peek() == '}' )
 {
 proc.Pop();
 break;
 }
 
 if( !aTopNode->ReadNode( proc, this, nullptr ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; unexpected eof %s." ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition() );
 
 return false;
 }
 
 if( proc.Peek() == ',' )
 proc.Pop();
 
 } // while( true ) -- reading contents of Group{}
 
 return true;
}
 
 
SGNODE* WRL1GROUP::TranslateToSG( SGNODE* aParent, WRL1STATUS* sp )
{
 wxCHECK_MSG( m_Parent, nullptr, wxT( "Group has no parent." ) );
 
 wxLogTrace( traceVrmlPlugin,
 wxT( " * [INFO] Translating Group with %zu children, %zu references, %zu back "
 "pointers, and %zu items." ),
 m_Children.size(), m_Refs.size(), m_BackPointers.size(), m_Items.size() );
 
 if( WRL1NODES::WRL1_BASE != m_Parent->GetNodeType() )
 {
 if( nullptr == sp )
 {
 wxLogTrace( traceVrmlPlugin, wxT( " * [INFO] bad model: no base data given." ) );
 
 return nullptr;
 }
 }
 else if( nullptr == sp )
 {
 m_current.Init();
 sp = &m_current;
 }
 
 S3D::SGTYPES ptype = S3D::GetSGNodeType( aParent );
 
 wxCHECK_MSG( nullptr == aParent && ptype == S3D::SGTYPE_TRANSFORM, nullptr,
 wxString::Format(
 wxT(" * [BUG] Group does not have a Transform parent (parent ID: %d" ),
 ptype ) );
 
 IFSG_TRANSFORM txNode( aParent );
 bool hasContent = false;
 
 std::list< WRL1NODE* >::iterator sI = m_Items.begin();
 std::list< WRL1NODE* >::iterator eI = m_Items.end();
 
 SGNODE* node = txNode.GetRawPtr();
 
 while( sI != eI )
 {
 if( nullptr != (*sI)->TranslateToSG( node, sp ) )
 hasContent = true;
 
 ++sI;
 }
 
 if( !hasContent )
 {
 txNode.Destroy();
 return nullptr;
 }
 
 return node;
}