navigate.H

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/*
 * This file is part of the "Archon" framework.
 * (http://files3d.sourceforge.net)
 *
 * Copyright © 2002 by Kristian Spangsege and Brian Kristiansen.
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation under the terms of the GNU General Public License is
 * hereby granted. No representations are made about the suitability of
 * this software for any purpose. It is provided "as is" without express
 * or implied warranty. See the GNU General Public License
 * (http://www.gnu.org/copyleft/gpl.html) for more details.
 *
 * The characters in this file are ISO8859-1 encoded.
 *
 * The documentation in this file is in "Doxygen" style
 * (http://www.doxygen.org).
 */

#ifndef ARCHON_X3D_NAVIGATE_H
#define ARCHON_X3D_NAVIGATE_H

#include <archon/x3d/server/appear.H>

namespace Archon
{
  namespace X3D
  {
    struct Billboard: GroupingNode, BoundedObject
    {
      static Ref<NodeBase> instantiate(BackRef<ExecutionContext> c)
      {
        return new Billboard(c);
      }

      static const NodeType *type;
      const NodeType *getType() const { return type; }

      Billboard(BackRef<ExecutionContext> c):
        NodeBase(c),
        axisOfRotation(Vector3(0, 1, 0)) {}

      const Vector3 &getAxisOfRotation() const { return axisOfRotation; }

    private:
      friend class Viewer;
      friend void initializeNavigateComponent();

      Vector3 axisOfRotation;

      EventSource axisOfRotationChanged;

      Time axisOfRotationStamp;
    };

    struct Viewpoint: BindableNode
    {
      static Ref<NodeBase> instantiate(BackRef<ExecutionContext> c)
      {
        return new Viewpoint(c);
      }

      static const NodeType *type;
      const NodeType *getType() const { return type; }

      Viewpoint(BackRef<ExecutionContext> c):
        NodeBase(c),
        jump(true),
        position(Vector3(0, 0, 10)),
        orientation(Rotation3(Vector3(0, 0, 1), 0)),
        fieldOfView(M_PI_4),
        centerOfRotation(Vector3::zero()) {}

      bool getJump()                       const { return jump; }
      const Vector3 &getPosition()         const { return position; }
      const Rotation3 &getOrientation()    const { return orientation; }
      double getFieldOfView()              const { return fieldOfView; }
      const Vector3 &getCenterOfRotation() const { return centerOfRotation; }
      string getDescription()              const { return description; }

    private:
      friend void initializeNavigateComponent();

      bool      jump;
      Vector3   position;
      Rotation3 orientation;
      double    fieldOfView; // 0 - M_PI
      Vector3   centerOfRotation; // Trackball center
      string    description;

      EventSource jumpChanged;
      EventSource positionChanged;
      EventSource orientationChanged;
      EventSource fieldOfViewChanged;
      EventSource centerOfRotationChanged;

      Time jumpStamp;
      Time positionStamp;
      Time orientationStamp;
      Time fieldOfViewStamp;
      Time centerOfRotationStamp;
    };
  }
}

#endif // ARCHON_X3D_NAVIGATE_H

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