vrml1_base.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
 */
 
#include <iostream>
#include <sstream>
#include <wx/log.h>
 
#include "vrml1_base.h"
#include "vrml1_group.h"
#include "vrml1_separator.h"
#include "vrml1_material.h"
#include "vrml1_matbinding.h"
#include "vrml1_coords.h"
#include "vrml1_switch.h"
#include "vrml1_faceset.h"
#include "vrml1_transform.h"
#include "vrml1_shapehints.h"
#include "plugins/3dapi/ifsg_all.h"
 
 
WRL1BASE::WRL1BASE() : WRL1NODE( nullptr )
{
 m_Type = WRL1NODES::WRL1_BASE;
 m_dictionary = new NAMEREGISTER;
 return;
}
 
 
WRL1BASE::~WRL1BASE()
{
 wxLogTrace( traceVrmlPlugin, wxT( " * [INFO] Destroying virtual base node." ) );
 
 cancelDict();
}
 
 
bool WRL1BASE::SetParent( WRL1NODE* aParent, bool /* doUnlink */ )
{
 wxCHECK_MSG( false, false, wxT( "Attempt to set parent on WRL1BASE node." ) );
}
 
 
std::string WRL1BASE::GetName( void )
{
 wxCHECK_MSG( false, std::string( "" ),
 wxT( "Attempt to extract name from virtual base node." ) );
}
 
 
bool WRL1BASE::SetName( const std::string& aName )
{
 wxCHECK_MSG( false, false, wxT( "Attempt to set name on virtual base node." ) );
}
 
 
bool WRL1BASE::Read( WRLPROC& proc )
{
 wxCHECK_MSG( proc.GetVRMLType() == WRLVERSION::VRML_V1, false,
 wxT( "No open file or file is not a VRML1 file" ) );
 
 // Note: according to the VRML1 specification, a file may contain
 // only one grouping node at the top level. The following code
 // supports non-conformant VRML1 files by processing all top level
 // nodes as if the vrml1_base were the equivalent of a vrml1_separator
 
 while( proc.Peek() )
 {
 if( !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.eof() )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetError() );
 
 return false;
 }
 
 return true;
}
 
 
bool WRL1BASE::implementUse( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 wxCHECK_MSG( aParent, false, wxT( "Invoked with invalid parent." ) );
 
 std::string glob;
 
 if( !proc.ReadName( glob ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s" ), proc.GetError() );
 
 return false;
 }
 
 WRL1NODE* ref = aParent->FindNode( glob );
 
 // return 'true' - the file may be defective but it may still be somewhat OK
 if( nullptr == ref )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n * [INFO] node '%s' not found." ),
 __FILE__, __FUNCTION__, __LINE__, glob );
 
 return true;
 }
 
 if( !aParent->AddRefNode( ref ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n * [INFO] failed to add node '%s' (%s) to parent of type %s." ),
 __FILE__, __FUNCTION__, __LINE__, glob,
 ref->GetNodeTypeName( ref->GetNodeType() ),
 aParent->GetNodeTypeName( aParent->GetNodeType() ) );
 
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = ref;
 
 return true;
}
 
 
bool WRL1BASE::implementDef( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 wxCHECK_MSG( nullptr != aParent, false, wxT( "Invalid parent pointer." ) );
 
 std::string glob;
 WRL1NODE* lnode = nullptr;
 
 if( !proc.ReadName( glob ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetError() );
 
 return false;
 }
 
 if( ReadNode( proc, aParent, &lnode ) )
 {
 if( nullptr != aNode )
 *aNode = lnode;
 
 if( lnode && !lnode->SetName( glob ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n * [INFO] bad formatting (invalid name) %s." ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition() );
 
 return false;
 }
 
 if( !m_dictionary )
 return false;
 
 m_dictionary->AddName( glob, lnode );
 
 return true;
 }
 
 return false;
}
 
 
bool WRL1BASE::ReadNode( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 // This function reads a node and stores a pointer to it in aNode.
 // A value 'true' is returned if a node is successfully read or,
 // if the node is not supported, successfully discarded. Callers
 // must always check the value of aNode when the function returns
 // 'true' since it will be NULL if the node type is not supported.
 
 if( nullptr != aNode )
 *aNode = nullptr;
 
 wxCHECK_MSG( aParent, false, wxT( "Invalid parent pointer." ) );
 
 std::string glob;
 WRL1NODES ntype;
 
 if( !proc.ReadName( glob ) )
 {
 if( !proc.eof() )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n%s" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetError() );
 }
 
 return false;
 }
 
 // Process node name:
 // the names encountered at this point should be one of the
 // built-in node names or one of:
 // DEF, USE
 if( !glob.compare( "USE" ) )
 {
 if( !implementUse( proc, aParent, aNode ) )
 return false;
 
 return true;
 }
 
 if( !glob.compare( "DEF" ) )
 {
 if( !implementDef( proc, aParent, aNode ) )
 return false;
 
 return true;
 }
 
 ntype = getNodeTypeID( glob );
 
 wxLogTrace( traceVrmlPlugin, wxT( " * [INFO] Processing node '%s' ID: %d." ), glob, ntype );
 
 switch( ntype )
 {
 case WRL1NODES::WRL1_GROUP:
 
 if( !readGroup( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_SEPARATOR:
 
 if( !readSeparator( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_SWITCH:
 
 if( !readSwitch( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_MATERIAL:
 
 if( !readMaterial( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_MATERIALBINDING:
 
 if( !readMatBinding( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_COORDINATE3:
 
 if( !readCoords( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_INDEXEDFACESET:
 
 if( !readFaceSet( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_TRANSFORM:
 case WRL1NODES::WRL1_TRANSLATION:
 case WRL1NODES::WRL1_ROTATION:
 case WRL1NODES::WRL1_SCALE:
 
 if( !readTransform( proc, aParent, aNode ) )
 return false;
 
 break;
 
 case WRL1NODES::WRL1_SHAPEHINTS:
 
 if( !readShapeHints( proc, aParent, aNode ) )
 return false;
 
 break;
 
 //
 // items not implemented or for optional future implementation:
 //
 default:
 
 if( !proc.DiscardNode() )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n * [INFO] could not discard node %s." ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition() );
 
 return false;
 }
 else
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( " * [INFO] discarded node '%s' %s (currently unsupported)." ),
 glob, proc.GetFilePosition() );
 }
 
 break;
 }
 
 return true;
}
 
 
bool WRL1BASE::Read( WRLPROC& proc, WRL1BASE* aTopNode )
{
 wxCHECK_MSG( false, false, wxT( "This method must never be invoked on a WRL1BASE object" ) );
}
 
 
bool WRL1BASE::readGroup( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1GROUP* np = new WRL1GROUP( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readSeparator( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1SEPARATOR* np = new WRL1SEPARATOR( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readSwitch( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 WRL1SWITCH* np = new WRL1SWITCH( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readMaterial( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1MATERIAL* np = new WRL1MATERIAL( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readMatBinding( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1MATBINDING* np = new WRL1MATBINDING( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readCoords( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1COORDS* np = new WRL1COORDS( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readFaceSet( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1FACESET* np = new WRL1FACESET( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readTransform( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1TRANSFORM* np = new WRL1TRANSFORM( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
bool WRL1BASE::readShapeHints( WRLPROC& proc, WRL1NODE* aParent, WRL1NODE** aNode )
{
 if( nullptr != aNode )
 *aNode = nullptr;
 
 WRL1SHAPEHINTS* np = new WRL1SHAPEHINTS( m_dictionary, aParent );
 
 if( !np->Read( proc, this ) )
 {
 delete np;
 return false;
 }
 
 if( nullptr != aNode )
 *aNode = (WRL1NODE*) np;
 
 return true;
}
 
 
SGNODE* WRL1BASE::TranslateToSG( SGNODE* aParent, WRL1STATUS* /*sp*/ )
{
 wxLogTrace( traceVrmlPlugin, wxT( " * [INFO] Translating VRML1 Base with %zu items." ),
 m_Items.size() );
 
 if( m_Items.empty() )
 return nullptr;
 
 if( m_Items.size() == 1 )
 return ( *m_Items.begin() )->TranslateToSG( nullptr, nullptr );
 
 // Note: according to the VRML1 specification, a file may contain
 // only one grouping node at the top level. The following code
 // supports non-conformant VRML1 files.
 
 m_current.Init();
 
 IFSG_TRANSFORM txNode( true );
 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, &m_current ) )
 hasContent = true;
 
 ++sI;
 }
 
 if( !hasContent )
 {
 txNode.Destroy();
 return nullptr;
 }
 
 return node;
}