scenegraph.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015 Cirilo Bernardo <[email protected]>
 * Copyright (C) 2020 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
 */
 
#ifndef SCENE_GRAPH_H
#define SCENE_GRAPH_H
 
#include <vector>
#include "3d_cache/sg/sg_node.h"
 
class SGSHAPE;
 
class SCENEGRAPH : public SGNODE
{
public:
 void unlinkChildNode( const SGNODE* aNode ) override;
 void unlinkRefNode( const SGNODE* aNode ) override;
 
 SCENEGRAPH( SGNODE* aParent );
 virtual ~SCENEGRAPH();
 
 virtual bool SetParent( SGNODE* aParent, bool notify = true ) override;
 SGNODE* FindNode(const char *aNodeName, const SGNODE *aCaller) override;
 bool AddRefNode( SGNODE* aNode ) override;
 bool AddChildNode( SGNODE* aNode ) override;
 
 void ReNameNodes( void ) override;
 bool WriteVRML( std::ostream& aFile, bool aReuseFlag ) override;
 
 bool WriteCache( std::ostream& aFile, SGNODE* parentNode ) override;
 bool ReadCache( std::istream& aFile, SGNODE* parentNode ) override;
 
 bool Prepare( const glm::dmat4* aTransform, S3D::MATLIST& materials,
 std::vector< SMESH >& meshes );
 
private:
 void unlinkNode( const SGNODE* aNode, bool isChild );
 bool addNode( SGNODE* aNode, bool isChild );
 
public:
 // note: order of transformation is Translate, Rotate, Offset
 SGPOINT center;
 SGPOINT translation;
 SGVECTOR rotation_axis;
 double rotation_angle; // radians
 SGPOINT scale;
 SGVECTOR scale_axis;
 double scale_angle; // radians
 
private:
 // The following are items which may be defined for reuse
 // in a VRML output file. They do not necessarily correspond
 // to the use of DEF within a VRML input file; it is the
 // responsibility of the plugin to perform any necessary
 // conversions to comply with the restrictions imposed by
 // this scene graph structure
 std::vector< SCENEGRAPH* > m_Transforms; // local Transform nodes
 std::vector< SGSHAPE* > m_Shape; // local Shape nodes
 
 std::vector< SCENEGRAPH* > m_RTransforms; // referenced Transform nodes
 std::vector< SGSHAPE* > m_RShape; // referenced Shape nodes
};
 
/*
 p.120
 Transform {
 center 0 0 0
 children []
 rotation 0 0 1 0
 scale 1 1 1
 scaleOrientation 0 0 1 0
 translation 0 0 0
 bboxCenter 0 0 0
 bboxSize -1 -1 -1
 }
*/
 
#endif // SCENE_GRAPH_H