ColorOcTree.h

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/*
 * OctoMap - An Efficient Probabilistic 3D Mapping Framework Based on Octrees
 * https://octomap.github.io/
 *
 * Copyright (c) 2009-2013, K.M. Wurm and A. Hornung, University of Freiburg
 * All rights reserved.
 * License: New BSD
 *
 * 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.
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 *       documentation and/or other materials provided with the distribution.
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 *       this software without specific prior written permission.
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 */
 
#ifndef OCTOMAP_COLOR_OCTREE_H
#define OCTOMAP_COLOR_OCTREE_H
 
 
#include <iostream>
#include <octomap/OcTreeNode.h>
#include <octomap/OccupancyOcTreeBase.h>
 
namespace octomap {
  
  // forward declaraton for "friend"
  class ColorOcTree;
  
  // node definition
  class ColorOcTreeNode : public OcTreeNode {    
  public:
    friend class ColorOcTree; // needs access to node children (inherited)
    
    class Color {
    public:
    Color() : r(255), g(255), b(255) {}
    Color(uint8_t _r, uint8_t _g, uint8_t _b) 
      : r(_r), g(_g), b(_b) {}
      inline bool operator== (const Color &other) const {
        return (r==other.r && g==other.g && b==other.b);
      }
      inline bool operator!= (const Color &other) const {
        return (r!=other.r || g!=other.g || b!=other.b);
      }
      uint8_t r, g, b;
    };
 
  public:
    ColorOcTreeNode() : OcTreeNode() {}
 
    ColorOcTreeNode(const ColorOcTreeNode& rhs) : OcTreeNode(rhs), color(rhs.color) {}
 
    bool operator==(const ColorOcTreeNode& rhs) const{
      return (rhs.value == value && rhs.color == color);
    }
    
    void copyData(const ColorOcTreeNode& from){
      OcTreeNode::copyData(from);
      this->color =  from.getColor();
    }
        
    inline Color getColor() const { return color; }
    inline void  setColor(Color c) {this->color = c; }
    inline void  setColor(uint8_t r, uint8_t g, uint8_t b) {
      this->color = Color(r,g,b); 
    }
 
    Color& getColor() { return color; }
 
    // has any color been integrated? (pure white is very unlikely...)
    inline bool isColorSet() const { 
      return ((color.r != 255) || (color.g != 255) || (color.b != 255)); 
    }
 
    void updateColorChildren();
 
 
    ColorOcTreeNode::Color getAverageChildColor() const;
  
    // file I/O
    std::istream& readData(std::istream &s);
    std::ostream& writeData(std::ostream &s) const;
    
  protected:
    Color color;
  };
 
 
  // tree definition
  class ColorOcTree : public OccupancyOcTreeBase <ColorOcTreeNode> {
 
  public:
    ColorOcTree(double resolution);
      
    ColorOcTree* create() const {return new ColorOcTree(resolution); }
 
    std::string getTreeType() const {return "ColorOcTree";}
    
    virtual bool pruneNode(ColorOcTreeNode* node);
    
    virtual bool isNodeCollapsible(const ColorOcTreeNode* node) const;
       
    // set node color at given key or coordinate. Replaces previous color.
    ColorOcTreeNode* setNodeColor(const OcTreeKey& key, uint8_t r, 
                                 uint8_t g, uint8_t b);
 
    ColorOcTreeNode* setNodeColor(float x, float y, 
                                 float z, uint8_t r, 
                                 uint8_t g, uint8_t b) {
      OcTreeKey key;
      if (!this->coordToKeyChecked(point3d(x,y,z), key)) return NULL;
      return setNodeColor(key,r,g,b);
    }
 
    // integrate color measurement at given key or coordinate. Average with previous color
    ColorOcTreeNode* averageNodeColor(const OcTreeKey& key, uint8_t r, 
                                  uint8_t g, uint8_t b);
    
    ColorOcTreeNode* averageNodeColor(float x, float y, 
                                      float z, uint8_t r, 
                                      uint8_t g, uint8_t b) {
      OcTreeKey key;
      if (!this->coordToKeyChecked(point3d(x,y,z), key)) return NULL;
      return averageNodeColor(key,r,g,b);
    }
 
    // integrate color measurement at given key or coordinate. Average with previous color
    ColorOcTreeNode* integrateNodeColor(const OcTreeKey& key, uint8_t r, 
                                  uint8_t g, uint8_t b);
    
    ColorOcTreeNode* integrateNodeColor(float x, float y, 
                                      float z, uint8_t r, 
                                      uint8_t g, uint8_t b) {
      OcTreeKey key;
      if (!this->coordToKeyChecked(point3d(x,y,z), key)) return NULL;
      return integrateNodeColor(key,r,g,b);
    }
 
    // update inner nodes, sets color to average child color
    void updateInnerOccupancy();
 
    // uses gnuplot to plot a RGB histogram in EPS format
    void writeColorHistogram(std::string filename);
    
  protected:
    void updateInnerOccupancyRecurs(ColorOcTreeNode* node, unsigned int depth);

    class StaticMemberInitializer{
       public:
         StaticMemberInitializer() {
           ColorOcTree* tree = new ColorOcTree(0.1);
           tree->clearKeyRays();
           AbstractOcTree::registerTreeType(tree);
         }

         void ensureLinking() {};
    };

    static StaticMemberInitializer colorOcTreeMemberInit;
 
  };

  std::ostream& operator<<(std::ostream& out, ColorOcTreeNode::Color const& c);
 
} // end namespace
 
#endif