vrml2_shape.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 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 "vrml2_base.h"
#include "vrml2_shape.h"
#include "plugins/3dapi/ifsg_all.h"
#include "vrml2_faceset.h"
 
 
WRL2SHAPE::WRL2SHAPE() : WRL2NODE()
{
 appearance = nullptr;
 geometry = nullptr;
 m_Type = WRL2NODES::WRL2_SHAPE;
}
 
 
WRL2SHAPE::WRL2SHAPE( WRL2NODE* aParent ) : WRL2NODE()
{
 appearance = nullptr;
 geometry = nullptr;
 m_Type = WRL2NODES::WRL2_SHAPE;
 m_Parent = aParent;
 
 if( nullptr != m_Parent )
 m_Parent->AddChildNode( this );
}
 
 
WRL2SHAPE::~WRL2SHAPE()
{
 wxLogTrace( traceVrmlPlugin,
 wxT( " * [INFO] Destroying Shape node with %zu children, %zu"
 "references, and %zu back pointers." ),
 m_Children.size(), m_Refs.size(), m_BackPointers.size() );
}
 
 
bool WRL2SHAPE::isDangling( void )
{
 // this node is dangling unless it has a parent of type:
 // WRL2_TRANSFORM
 // WRL2_SWITCH
 
 if( nullptr == m_Parent
 || ( m_Parent->GetNodeType() != WRL2NODES::WRL2_TRANSFORM
 && m_Parent->GetNodeType() != WRL2NODES::WRL2_SWITCH ) )
 return true;
 
 return false;
}
 
 
bool WRL2SHAPE::AddRefNode( WRL2NODE* aNode )
{
 wxCHECK_MSG( aNode, false, wxT( "Invalid node." ) );
 
 WRL2NODES type = aNode->GetNodeType();
 
 if( !checkNodeType( type ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; unexpected child node '%s'." ),
 __FILE__, __FUNCTION__, __LINE__, aNode->GetNodeTypeName( type ) );
 
 return false;
 }
 
 if( WRL2NODES::WRL2_APPEARANCE == type )
 {
 if( nullptr != appearance )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; multiple appearance nodes." ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 
 appearance = aNode;
 return WRL2NODE::AddRefNode( aNode );
 }
 
 if( nullptr != geometry )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; multiple geometry nodes." ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 
 geometry = aNode;
 return WRL2NODE::AddRefNode( aNode );
}
 
 
bool WRL2SHAPE::AddChildNode( WRL2NODE* aNode )
{
 wxCHECK_MSG( aNode, false, wxT( "Invalid node." ) );
 
 WRL2NODES type = aNode->GetNodeType();
 
 if( !checkNodeType( type ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; unexpected child node '%s'." ),
 __FILE__, __FUNCTION__, __LINE__, aNode->GetNodeTypeName( type ) );
 
 return false;
 }
 
 if( WRL2NODES::WRL2_APPEARANCE == type )
 {
 if( nullptr != appearance )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; multiple appearance nodes." ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 
 appearance = aNode;
 return WRL2NODE::AddChildNode( aNode );
 }
 
 if( nullptr != geometry )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] bad file format; multiple geometry nodes." ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 
 geometry = aNode;
 return WRL2NODE::AddChildNode( aNode );
}
 
 
bool WRL2SHAPE::checkNodeType( WRL2NODES aType )
{
 switch( aType )
 {
 case WRL2NODES::WRL2_APPEARANCE:
 case WRL2NODES::WRL2_BOX:
 case WRL2NODES::WRL2_CONE:
 case WRL2NODES::WRL2_CYLINDER:
 case WRL2NODES::WRL2_ELEVATIONGRID:
 case WRL2NODES::WRL2_EXTRUSION:
 case WRL2NODES::WRL2_INDEXEDFACESET:
 case WRL2NODES::WRL2_INDEXEDLINESET:
 case WRL2NODES::WRL2_POINTSET:
 case WRL2NODES::WRL2_SPHERE:
 case WRL2NODES::WRL2_TEXT:
 break;
 
 default:
 return false;
 break;
 }
 
 return true;
}
 
 
bool WRL2SHAPE::Read( WRLPROC& proc, WRL2BASE* aTopNode )
{
 wxCHECK_MSG( aTopNode, false, wxT( "Invalid top node." ) );
 
 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();
 std::string glob;
 
 while( true )
 {
 if( proc.Peek() == '}' )
 {
 proc.Pop();
 break;
 }
 
 if( !proc.ReadName( glob ) )
 {
 wxLogTrace( traceVrmlPlugin, wxT( "%s:%s:%d\n"
 "%s" ),
 __FILE__, __FUNCTION__, __LINE__ , proc.GetError() );
 
 return false;
 }
 
 // expecting one of:
 // appearance
 // geometry
 if( !glob.compare( "appearance" ) )
 {
 if( !aTopNode->ReadNode( proc, this, nullptr ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] could not read appearance node information." ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 }
 else if( !glob.compare( "geometry" ) )
 {
 if( !aTopNode->ReadNode( proc, this, nullptr ) )
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] could not read geometry node information." ),
 __FILE__, __FUNCTION__, __LINE__ );
 
 return false;
 }
 }
 else
 {
 wxLogTrace( traceVrmlPlugin,
 wxT( "%s:%s:%d\n"
 " * [INFO] invalid Shape %s.\n"
 " * [INFO] file: '%s'\n" ),
 __FILE__, __FUNCTION__, __LINE__, proc.GetFilePosition(),
 proc.GetFileName() );
 
 return false;
 }
 } // while( true ) -- reading contents of Shape{}
 
 return true;
}
 
 
SGNODE* WRL2SHAPE::TranslateToSG( SGNODE* aParent )
{
 if( nullptr == geometry )
 return nullptr;
 
 WRL2NODES geomType = geometry->GetNodeType();
 
 switch( geomType )
 {
 case WRL2NODES::WRL2_INDEXEDLINESET:
 case WRL2NODES::WRL2_POINTSET:
 case WRL2NODES::WRL2_TEXT:
 return nullptr;
 break;
 
 default:
 break;
 }
 
 wxLogTrace( traceVrmlPlugin,
 wxT( " * [INFO] Translating Shape with %zu children, %zu references, and"
 "%zu back pointers." ),
 m_Children.size(), m_Refs.size(), m_BackPointers.size() );
 
 bool vcolors = false;
 
 if( WRL2NODES::WRL2_INDEXEDFACESET == geometry->GetNodeType() )
 vcolors = ((WRL2FACESET*)geometry)->HasColors();
 
 // if there is no appearance, make use of the per vertex colors if available
 if( nullptr == appearance )
 {
 if( WRL2NODES::WRL2_INDEXEDFACESET != geometry->GetNodeType() )
 return nullptr;
 
 if( !vcolors )
 return nullptr;
 }
 
 S3D::SGTYPES ptype = S3D::GetSGNodeType( aParent );
 
 wxCHECK_MSG( aParent && ( ptype == S3D::SGTYPE_TRANSFORM ), nullptr,
 wxString::Format( wxT( "Shape does not have a Transform parent (parent "
 "ID: %d)." ), ptype ) );
 
 if( m_sgNode )
 {
 if( nullptr != aParent )
 {
 if( nullptr == S3D::GetSGNodeParent( m_sgNode )
 && !S3D::AddSGNodeChild( aParent, m_sgNode ) )
 {
 return nullptr;
 }
 else if( aParent != S3D::GetSGNodeParent( m_sgNode )
 && !S3D::AddSGNodeRef( aParent, m_sgNode ) )
 {
 return nullptr;
 }
 }
 
 return m_sgNode;
 }
 
 IFSG_SHAPE shNode( aParent );
 
 SGNODE* pShape = shNode.GetRawPtr();
 SGNODE* pGeom = geometry->TranslateToSG( pShape );
 
 if( nullptr == pGeom )
 {
 // this can happen if a VRML file contains
 // empty point or index sets
 shNode.Destroy();
 return nullptr;
 }
 
 SGNODE* pApp = nullptr;
 
 if( nullptr != appearance )
 pApp = appearance->TranslateToSG( pShape );
 
 if( nullptr != appearance && nullptr == pApp )
 {
 IFSG_FACESET tmp( false );
 tmp.Attach( pGeom );
 tmp.Destroy();
 shNode.Destroy();
 return nullptr;
 }
 
 m_sgNode = shNode.GetRawPtr();
 
 return m_sgNode;
}
 
 
void WRL2SHAPE::unlinkChildNode( const WRL2NODE* aNode )
{
 if( nullptr == aNode )
 return;
 
 if( aNode == appearance )
 appearance = nullptr;
 else if( aNode == geometry )
 geometry = nullptr;
 
 WRL2NODE::unlinkChildNode( aNode );
}
 
 
void WRL2SHAPE::unlinkRefNode( const WRL2NODE* aNode )
{
 if( nullptr == aNode )
 return;
 
 if( aNode == appearance )
 appearance = nullptr;
 else if( aNode == geometry )
 geometry = nullptr;
 
 WRL2NODE::unlinkRefNode( aNode );
}