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root / scout / scoutsim / src / ghost_scout.cpp @ ddfeb111

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/**
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 * The code in this package was developed using the structure of Willow
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 * Garage's turtlesim package.  It was modified by the CMU Robotics Club
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 * to be used as a simulator for the Colony Scout robot.
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 *
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 * All redistribution of this code is limited to the terms of Willow Garage's
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 * licensing terms, as well as under permission from the CMU Robotics Club.
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 * 
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 * Copyright (c) 2011 Colony Project
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 * 
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 * Permission is hereby granted, free of charge, to any person
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 * obtaining a copy of this software and associated documentation
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 * files (the "Software"), to deal in the Software without
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 * restriction, including without limitation the rights to use,
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 * copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following
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 * conditions:
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 * 
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 * 
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 * Copyright (c) 2009, Willow Garage, Inc.
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 * All rights reserved.
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 * 
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 * 
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 *    Redistributions of source code must retain the above copyright
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 *       notice, this list of conditions and the following disclaimer.
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 *    Redistributions in binary form must reproduce the above copyright
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 *       notice, this list of conditions and the following disclaimer in the
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 *       documentation and/or other materials provided with the distribution.
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 *    Neither the name of the Willow Garage, Inc. nor the names of its
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 *       contributors may be used to endorse or promote products derived from
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 *       this software without specific prior written permission.
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 * 
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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 * OTHER DEALINGS IN THE SOFTWARE.
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 */
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#include "ghost_scout.h"
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#include <wx/wx.h>
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using namespace std;
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namespace scoutsim
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{
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  GhostScout::GhostScout(const ros::NodeHandle& nh,
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      const wxImage& scout_image,
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      const Vector2& pos,
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      wxBitmap *path_bitmap,
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      float orient,
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      string scoutname)
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    : path_bitmap(path_bitmap)
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      , node (nh)
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      , scout_image(scout_image)
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      , pos(pos)
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      , start_x(pos.x)
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      , start_y(pos.y)
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      , orient(orient)
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      , name(scoutname)
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  {
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    scout = wxBitmap(scout_image);
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    position = node.subscribe("position", 1, &GhostScout::setPosition, this);
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  }
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  void GhostScout::setPosition(const ::messages::ScoutPosition& msg)
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  {
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    pos.x = start_x + msg.x;
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    pos.y = start_y - msg.y;
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    orient = msg.theta;
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  }
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  // Scale to linesensor value
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  unsigned int GhostScout::rgb_to_grey(unsigned char r,
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      unsigned char g,
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      unsigned char b)
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  {
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    // Should be 0 to 255
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    unsigned int grey = ((unsigned int) r + (unsigned int) g + (unsigned int) b) / 3;
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    /// @todo Convert to the proper range
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    return 255 - grey;
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  }
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  /// Sends back the position of this scout so scoutsim can save
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  /// the world state
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  geometry_msgs::Pose2D GhostScout::update(double dt,
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      wxMemoryDC& path_dc,
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      wxMemoryDC& sonar_dc,
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      wxColour background_color,
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      world_state state)
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  {
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    wxImage rotated_image = scout_image.Rotate(orient - M_PI/2.0,
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        wxPoint(scout_image.GetWidth() / 2,
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          scout_image.GetHeight() / 2),
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        false);
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    for (int y = 0; y < rotated_image.GetHeight(); ++y)
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    {
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      for (int x = 0; x < rotated_image.GetWidth(); ++x)
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      {
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        if (rotated_image.GetRed(x, y) == 255
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            && rotated_image.GetBlue(x, y) == 255
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            && rotated_image.GetGreen(x, y) == 255)
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        {
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          rotated_image.SetAlpha(x, y, 0);
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        }
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        else
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        {
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          rotated_image.SetAlpha(x, y, 125);
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        }
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      }
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    }
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    scout = wxBitmap(rotated_image);
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    geometry_msgs::Pose2D my_pose;
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    my_pose.x = pos.x;
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    my_pose.y = pos.y;
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    my_pose.theta = orient;
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    ROS_INFO("Scout position %f  %f  %f", pos.x, pos.y, orient);
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    return my_pose;
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  }
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  void GhostScout::paint(wxDC& dc)
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  {
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    wxSize scout_size = wxSize(scout.GetWidth(), scout.GetHeight());
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    dc.DrawBitmap(scout, pos.x * PIX_PER_METER - (scout_size.GetWidth() / 2),
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        pos.y * PIX_PER_METER - (scout_size.GetHeight() / 2), true);
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  }
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}