testDisplayPolygonLines.cpp

Test display polygon lines.

/*
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2024 by Inria. All rights reserved.
 *
 * This software 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.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See https://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Test display polygon lines
 */

 
#include <cstdlib>
 
#include <visp3/core/vpImage.h>
#include <visp3/core/vpImageConvert.h>
#include <visp3/core/vpPolygon.h>
#include <visp3/core/vpRect.h>
#include <visp3/gui/vpDisplayFactory.h>
#include <visp3/io/vpParseArgv.h>
 
// List of allowed command line options
#define GETOPTARGS "cdh"
 
#ifdef ENABLE_VISP_NAMESPACE
using namespace VISP_NAMESPACE_NAME;
#endif
 
void usage(const char *name, const char *badparam);
bool getOptions(int argc, const char **argv, bool &click_allowed, bool &display);

void usage(const char *name, const char *badparam)
{
  fprintf(stdout, "\n\
Display polygon lines.\n\
\n\
SYNOPSIS\n\
  %s [-c] [-d] [-h]\n",
          name);
 
  fprintf(stdout, "\n\
OPTIONS:                                               Default\n\
  -c\n\
     Disable the mouse click. Useful to automate the \n\
     execution of this program without human intervention.\n\
\n\
  -d                                             \n\
     Disable the image display. This can be useful \n\
     for automatic tests. \n\
\n\
  -h\n\
     Print the help.\n\n");
 
  if (badparam) {
    fprintf(stderr, "ERROR: \n");
    fprintf(stderr, "\nBad parameter [%s]\n", badparam);
  }
}

bool getOptions(int argc, const char **argv, bool &click_allowed, bool &display)
{
  const char *optarg_;
  int c;
 
  while ((c = vpParseArgv::parse(argc, argv, GETOPTARGS, &optarg_)) > 1) {
    switch (c) {
    case 'c':
      click_allowed = false;
      break;
    case 'd':
      display = false;
      break;
    case 'h':
      usage(argv[0], nullptr);
      return false;
 
    default:
      usage(argv[0], optarg_);
      return false;
    }
  }
 
  if ((c == 1) || (c == -1)) {
    // standalone param or error
    usage(argv[0], nullptr);
    std::cerr << "ERROR: " << std::endl;
    std::cerr << "  Bad argument " << optarg_ << std::endl << std::endl;
    return false;
  }
 
  return true;
}
 
int main(int argc, const char **argv)
{
#ifdef VISP_HAVE_DISPLAY
  bool opt_click_allowed = true;
  bool opt_display = true;
 
  // Read the command line options
  if (getOptions(argc, argv, opt_click_allowed, opt_display) == false) {
    return EXIT_FAILURE;
  }
 
  if (opt_display && opt_click_allowed) {
    vpImage<unsigned char> I(480, 640, 127);
    vpImage<vpRGBa> I_color(480, 640);
 
#if(VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11)
    std::shared_ptr<vpDisplay> d = vpDisplayFactory::createDisplay();
    std::shared_ptr<vpDisplay> d2 = vpDisplayFactory::createDisplay();
#else
    vpDisplay *d = vpDisplayFactory::allocateDisplay();
    vpDisplay *d2 = vpDisplayFactory::allocateDisplay();
#endif
    d->init(I, 0, 0, "Grayscale image");
 
    vpDisplay::display(I);
    vpDisplay::displayText(I, 20, 20, "Left click to draw a polygon, right click when it is finished.", vpColor::red);
    vpDisplay::flush(I);
 
    vpPolygon polygon;
    polygon.initClick(I);
 
    vpDisplay::display(I);
    vpDisplay::displayText(I, 20, 20, "Shape is not closed. Click to display dashed lines.", vpColor::red);
    vpDisplay::displayLine(I, polygon.getCorners(), false, vpColor::red, 2);
    vpDisplay::flush(I);
    vpDisplay::getClick(I);
 
    vpDisplay::display(I);
    vpDisplay::displayText(I, 20, 20, "Shape is closed. Click to draw on color image.", vpColor::red);
    vpDisplay::displayDotLine(I, polygon.getCorners(), true, vpColor::red, 2);
    vpDisplay::flush(I);
    vpDisplay::getClick(I);
 
    d2->init(I_color, I.getWidth(), 0, "Color image");
    // Create colormap
    for (unsigned int i = 0; i < I_color.getHeight(); i++) {
      double hue = i / static_cast<double>(I_color.getHeight()), saturation = 1.0, value = 1.0;
      unsigned char rgb[3];
      vpImageConvert::HSVToRGB(&hue, &saturation, &value, rgb, 1);
 
      for (unsigned int j = 0; j < I_color.getWidth(); j++) {
        I_color[i][j].R = rgb[0];
        I_color[i][j].G = rgb[1];
        I_color[i][j].B = rgb[2];
      }
    }
 
    vpDisplay::display(I_color);
    vpDisplay::displayText(I_color, 20, 20, "Left click to draw a polygon, right click when it is finished.",
                           vpColor::black);
    vpDisplay::flush(I_color);
 
    polygon.initClick(I_color);
 
    vpDisplay::display(I_color);
    vpDisplay::displayText(I_color, 20, 20, "Shape is closed. Click to display dashed lines.", vpColor::black);
    vpDisplay::displayLine(I_color, polygon.getCorners(), true, vpColor::red, 2);
    vpDisplay::flush(I_color);
    vpDisplay::getClick(I_color);
 
    vpDisplay::display(I_color);
    vpDisplay::displayText(I_color, 20, 20, "Shape is not closed. Click to quit.", vpColor::black);
    vpDisplay::displayDotLine(I_color, polygon.getCorners(), false, vpColor::red, 2);
    vpDisplay::flush(I_color);
    vpDisplay::getClick(I_color);
#if(VISP_CXX_STANDARD < VISP_CXX_STANDARD_11)
    delete d;
    delete d2;
#endif
  }
#else
  (void)argc;
  (void)argv;
#endif
  return EXIT_SUCCESS;
}