H3DFunctionNode.h

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//    Copyright 2004-2019, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API 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.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __H3DFUNCTIONNODE_H__
#define __H3DFUNCTIONNODE_H__
 
#include <H3D/X3DNode.h>
#include <H3D/MFDouble.h>
#include <H3D/SFDouble.h>
 
#include <HAPI/HAPIFunctionObject.h>
 
namespace H3D {
 
  class H3DAPI_API H3DFunctionNode : public X3DNode {
  public:
 
    class H3DAPI_API Value: public TypedField< SFDouble, MFDouble > {
    protected:
      virtual void update();
    };
 
    H3DFunctionNode( Inst< SFNode   >  _metadata = 0,
                     Inst< MFDouble  > _input     = 0,
                     Inst< Value    > _output     = 0 );
 
    virtual H3DDouble evaluate( H3DDouble *input ) = 0;
 
    inline H3DDouble evaluate( H3DDouble _input ) {
      return evaluate( &_input );
    }
 
    inline H3DDouble get( H3DDouble _input ) {
      return evaluate( &_input );
    }
 
    virtual unsigned int nrInputValues() = 0;
 
    virtual HAPI::HAPIFunctionObject *getAsHAPIFunctionObject() { return NULL;}
 
    virtual string defaultXMLContainerField() {
      return "function";
    }
    
    H3DUniquePtr< MFDouble > input;
 
    H3DUniquePtr< Value > output;
 
    H3DUniquePtr< Field > functionChanged;
  };
}
 
#endif