interactive_marker_control.h

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/*
 * Copyright (c) 2011, Willow Garage, Inc.
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
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 *     * Neither the name of the Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef INTERACTIVE_MARKER_CONTROL_H_
#define INTERACTIVE_MARKER_CONTROL_H_

#include <visualization_msgs/InteractiveMarkerControl.h>

#include "rviz/default_plugin/markers/marker_base.h"
#include "rviz/selection/forwards.h"
#include "rviz/viewport_mouse_event.h"

#include <OGRE/OgreRay.h>
#include <OGRE/OgreVector3.h>
#include <OGRE/OgreQuaternion.h>
#include <OGRE/OgreSceneManager.h>

#include <boost/shared_ptr.hpp>

namespace Ogre
{
  class SceneNode;
}

namespace rviz
{
class VisualizationManager;
class InteractiveMarker;
class PointsMarker;

class InteractiveMarkerControl : public Ogre::SceneManager::Listener
{
public:

  InteractiveMarkerControl(VisualizationManager* vis_manager,
      const visualization_msgs::InteractiveMarkerControl &message,
      Ogre::SceneNode *reference_node, InteractiveMarker *parent );

  virtual ~InteractiveMarkerControl();

  // called when interactive mode is globally switched on/off
  virtual void enableInteraction(bool enable);

  // will receive all mouse events while the handler has focus
  virtual void handleMouseEvent(ViewportMouseEvent& event);

  void interactiveMarkerPoseChanged( Ogre::Vector3 int_marker_position, Ogre::Quaternion int_marker_orientation );

  bool isInteractive() { return interaction_mode_ != visualization_msgs::InteractiveMarkerControl::NONE; }

  // Called every frame by parent's update() function.
  void update();

  void setVisible( bool visible );

protected:

  // when this is called, we will face the camera
  virtual void preFindVisibleObjects(Ogre::SceneManager *source, Ogre::SceneManager::IlluminationRenderStage irs, Ogre::Viewport *v);

  void rotate(Ogre::Ray &mouse_ray);

  void moveRotate( Ogre::Ray &mouse_ray );

  void movePlane(Ogre::Ray &mouse_ray);

  // Move the position along the control ray given the latest mouse ray.
  void moveAxis( const Ogre::Ray& mouse_ray, const ViewportMouseEvent& event );

  bool intersectYzPlane( const Ogre::Ray& mouse_ray,
                         Ogre::Vector3& intersection_3d,
                         Ogre::Vector2& intersection_2d,
                         float& ray_t );

  bool intersectSomeYzPlane( const Ogre::Ray& mouse_ray,
                             const Ogre::Vector3& point_in_plane,
                             const Ogre::Quaternion& plane_orientation,
                             Ogre::Vector3& intersection_3d,
                             Ogre::Vector2& intersection_2d,
                             float& ray_t );

  bool findClosestPoint( const Ogre::Ray& target_ray,
                         const Ogre::Ray& mouse_ray,
                         Ogre::Vector3& closest_point );

  void worldToScreen( const Ogre::Vector3& pos_rel_reference,
                      const Ogre::Viewport* viewport,
                      Ogre::Vector2& screen_pos );

  void addHighlightPass( S_MaterialPtr materials );

  // set the highlight color to (a,a,a)
  void setHighlight( float a );

  // Save a copy of the latest mouse event with the event type set to
  // QEvent::MouseMove, so that update() can resend the mouse event during
  // drag actions to maintain consistent behavior.
  void recordDraggingInPlaceEvent( ViewportMouseEvent& event );

  // Motion part of mouse event handling.
  void handleMouseMovement( ViewportMouseEvent& event );

  // Return closest point on a line to a test point.
  Ogre::Vector3 closestPointOnLineToPoint( const Ogre::Vector3& line_start,
                                           const Ogre::Vector3& line_dir,
                                           const Ogre::Vector3& test_point );

  bool dragging_;

  ViewportMouseEvent dragging_in_place_event_;

  VisualizationManager* vis_manager_;

  CollObjectHandle coll_object_handle_;

  Ogre::SceneNode *reference_node_;

  Ogre::SceneNode *control_frame_node_;

  // this is a child of scene_node, but might be oriented differently
  Ogre::SceneNode *markers_node_;

  // interaction mode
  int interaction_mode_;
  int orientation_mode_;

  // if in view facing mode, the markers should be
  // view facing as well
  // if set to false, they will follow the parent's transformations
  bool independent_marker_orientation_;

  Ogre::Quaternion control_orientation_;

  bool always_visible_;

  std::string description_;

  std::string name_;

  typedef boost::shared_ptr<MarkerBase> MarkerBasePtr;
  std::vector< MarkerBasePtr > markers_;

  InteractiveMarker *parent_;

  std::set<Ogre::Pass*> highlight_passes_;

  // PointsMarkers are rendered by special shader programs, so the
  // regular highlighting method does not work for them.  Keep a
  // vector of them so we can call their setHighlightColor() function.
  typedef boost::shared_ptr<PointsMarker> PointsMarkerPtr;
  std::vector< PointsMarkerPtr > points_markers_;

  Ogre::Radian rotation_;

  Ogre::Radian rotation_at_mouse_down_;

  Ogre::Quaternion intitial_orientation_;

  Ogre::Vector3 grab_point_;

  // The 2D position in pixel coordinates of the mouse-down location.
  Ogre::Vector2 grab_pixel_;
  // The position of the parent when the mouse button is pressed.
  Ogre::Vector3 parent_position_at_mouse_down_;

  Ogre::Quaternion control_frame_orientation_at_mouse_down_;

  Ogre::Quaternion parent_orientation_at_mouse_down_;

  Ogre::Vector3 rotation_axis_;

  Ogre::Vector3 rotation_center_rel_control_;

  Ogre::Vector3 grab_point_rel_control_;

  bool has_focus_;
  bool interaction_enabled_;

  bool visible_;
};

}

#endif /* INTERACTIVE_MARKER_CONTROL_H_ */