kicad/plugins/3d/vrml/x3d/x3d_base.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016 Cirilo Bernardo <cirilo.bernardo@gmail.com>
*
* 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
*/
/**
* @file x3d_base.h
* declares base class of X3D tree
*/
#ifndef X3D_BASE_H
#define X3D_BASE_H
#include <list>
#include <map>
#include <string>
#include <vector>
#include <wx/string.h>
class X3DNODE;
class SGNODE;
class wxXmlNode;
typedef std::vector< wxXmlNode* > NODE_LIST;
// a class to hold the dictionary of node DEFs
class X3D_DICT
{
private:
std::map< wxString, X3DNODE* > reg;
public:
bool AddName( const wxString& aName, X3DNODE* aNode );
bool DelName( const wxString& aName, X3DNODE* aNode );
X3DNODE* FindName( const wxString& aName );
};
enum X3DNODES
{
X3D_TRANSFORM = 0, // Transform or Group node
X3D_SWITCH,
X3D_SHAPE,
X3D_APPEARANCE,
X3D_INDEXED_FACE_SET,
X3D_COORDINATE,
X3D_INVALID,
X3D_END = X3D_INVALID
};
/**
* X3DNODE
* represents the base class of all X3D nodes
*/
class X3DNODE
{
protected:
X3DNODE* m_Parent; // pointer to parent node; may be NULL for top level node
X3DNODES m_Type; // type of node
X3D_DICT* m_Dict; // reference to dictionary
std::list< X3DNODE* > m_BackPointers; // nodes which hold a reference to this
std::list< X3DNODE* > m_Children; // nodes owned by this node
std::list< X3DNODE* > m_Refs; // nodes referenced by this node
std::string m_error;
wxString m_Name; // name to use for referencing the node by name
SGNODE* m_sgNode; // the SGNODE representation of the display data
public:
/**
* Function unlinkChild
* removes references to an owned child; it is invoked by the child upon destruction
* to ensure that the parent has no invalid references.
*
* @param aNode is the child which is being deleted
*/
virtual void unlinkChildNode( const X3DNODE* aNode );
/**
* Function unlinkRef
* removes pointers to a referenced node; it is invoked by the referenced node
* upon destruction to ensure that the referring node has no invalid references.
*
* @param aNode is the node which is being deleted
*/
virtual void unlinkRefNode( const X3DNODE* aNode );
/**
* Function addNodeRef
* adds a pointer to a node which references, but does not own, this node.
* Such back-pointers are required to ensure that invalidated references
* are removed when a node is deleted
*
* @param aNode is the node holding a reference to this object
*/
void addNodeRef( X3DNODE* aNode );
/**
* Function delNodeRef
* removes a pointer to a node which references, but does not own, this node.
*
* @param aNode is the node holding a reference to this object
*/
void delNodeRef( X3DNODE* aNode );
public:
X3DNODE();
virtual ~X3DNODE();
// read data and return TRUE on success
virtual bool Read( wxXmlNode* aNode, X3DNODE* aTopNode, X3D_DICT& aDict ) = 0;
/**
* Function GetNodeType
* returns the type of this node instance
*/
X3DNODES GetNodeType( void ) const;
/**
* Function GetParent
* returns a pointer to the parent node of this object
* or NULL if the object has no parent (ie. top level transform)
*/
X3DNODE* GetParent( void ) const;
/**
* Function GetName
* returns the name of this object
*/
wxString GetName( void ) const;
/**
* Function SetParent
* sets the parent X3DNODE of this object.
*
* @param aParent [in] is the desired parent node
* @param doUnlink indicates that the child must be unlinked from the parent
* @return true if the operation succeeds; false if
* the given node is not allowed to be a parent to
* the derived object.
*/
virtual bool SetParent( X3DNODE* aParent, bool doUnlink = true ) = 0;
virtual bool AddChildNode( X3DNODE* aNode ) = 0;
virtual bool AddRefNode( X3DNODE* aNode ) = 0;
std::string GetError( void );
/**
* Function TranslateToSG
* produces a representation of the data using the intermediate
* scenegraph structures of the kicad_3dsg library.
*
* @param aParent is a pointer to the parent SG node
* @return is non-NULL on success
*/
virtual SGNODE* TranslateToSG( SGNODE* aParent ) = 0;
};
#endif // X3D_BASE_H