a_image.h

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/*
         Copyright 2010-2016 Pierre SMARS (smars@yuntech.edu.tw)
         This program 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.
 
         This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _A_IMAGE_H_
#define _A_IMAGE_H_
 
// .NAME a_image
// .SECTION Author
// Pierre Smars
 
#include "vtkPoints.h"
#include "vtkDoubleArray.h"
#include "vtkFloatArray.h"
#include "vtkTexture.h"
#include "a_pmat.h"
#include <string>
#include <iostream>
#include <vector>
 
class a_image
{
        public:
                a_image(const std::string& image_file, const std::string& matrix_file);
                ~a_image();
                static const std::string help();
                virtual std::string type() const {return "a_image";}
                vtkTexture * texture() const {return texture_;}
                void image(const std::string& file_name);
                void pmatrix(const std::string& file_name);
                void gettcoords(vtkPoints *, vtkFloatArray * tcoords) const;    
                inline void name(std::string aname) {name_ =aname;}
                inline std::string name() const {return name_;}
                inline bool operator==(const std::string& s) {return name_ ==s;}
                inline bool operator!=(const std::string& s) {return name_ !=s;}
 
                //: input/output
                friend  std::istream&   operator>> (std::istream& i, a_image& l);
                friend  std::ostream&   operator<< (std::ostream& o, const a_image& l);
                virtual void read(std::istream& in) {};
                virtual void write(std::ostream& o) const {};
                void open(const std::string file);
                void save(const std::string file);
 
                class file_error {};
 
        protected:
                void file_exist(const std::string& name) const;
                void texture_coordinates(const double * x, float * tcoord) const;
                std::string                     name_;
                vtkTexture *                    texture_;
                int *                           bb_; //bounding box of the image
                a_pmat *                        p_; //projection matrix of the image
};
 
inline bool operator==(a_image * l, const std::string s) {return (*l) ==s;}
inline bool operator!=(a_image * l, const std::string s) {return (*l) !=s;}
void delete_vector(std::vector<a_image *> &);
 
#endif