H3DShadowObjectNode.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 __H3DSHADOWOBJECTNODE_H__
#define __H3DSHADOWOBJECTNODE_H__
 
#include <H3D/X3DNode.h>
#include <H3D/X3DLightNode.h>
#include <H3D/MatrixTransform.h>
 
namespace H3D {
 
  class H3DAPI_API H3DShadowObjectNode : public X3DNode {
  public:
 
    // Struct to transfer light data in a thread safe manner
    struct LightDataStruct {
 
      LightDataStruct( X3DLightNode* light );
 
      Vec3f getLightPosition() const { return light_pos; }
      Vec3f getLightDirection() const { return light_dir; }
      bool isDirectionalLight() const { return is_direction_light; }
      bool isPointLight() const { return is_point_light; }
 
    protected:
      Vec3f light_pos;
      Vec3f light_dir;
      bool  is_direction_light;
      bool  is_point_light;
    };
 
    typedef TypedSFNode< MatrixTransform > SFTransformNode;
 
    H3DShadowObjectNode( Inst< SFNode > _metadata = 0,
                         Inst< SFTransformNode > _transform = 0,
                         Inst< SFBool > _enabled = 0 );
 
    virtual void computeShadowVolumeInformationCPU( const LightDataStruct& light_data, Matrix4f accumulated_fwd, bool render_caps, std::vector< Vec4d >& coord ) = 0;
    
    virtual void update() {};
 
    virtual void renderShadowGPU( const LightDataStruct& light_data, Matrix4f accumulated_fwd, bool render_caps ) = 0;
    virtual string defaultXMLContainerField() {
      return "object";
    }
 
    H3DUniquePtr< SFTransformNode > transform;
 
    H3DUniquePtr< SFBool > enabled;
 
    static H3DNodeDatabase database;
 };
}
 
#endif