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#ifndef CGAL_SHAPE_DETECTION_EXAMPLES_UTILS_H
#define CGAL_SHAPE_DETECTION_EXAMPLES_UTILS_H
// STL includes.
#include <string>
#include <vector>
#include <utility>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <iterator>
#include <cassert>
// CGAL includes.
#include <CGAL/array.h>
#include <CGAL/memory.h>
#include <CGAL/IO/PLY.h>
#include <CGAL/IO/OFF.h>
#include <CGAL/Real_timer.h>
#include <CGAL/property_map.h>
#include <CGAL/IO/write_ply_points.h>
#include <CGAL/IO/Color.h>
#include <CGAL/Random.h>
#include <CGAL/Shape_detection/Region_growing/internal/utils.h>
// Define how a color should be stored.
namespace CGAL {
template<class F>
struct Output_rep< ::std::array<unsigned char, 3>, F > {
const ::std::array<unsigned char, 3>& c;
static const bool is_specialized = true;
Output_rep(const ::std::array<unsigned char, 3>& c) : c(c) { }
std::ostream& operator()(std::ostream& out) const {
if (IO::is_ascii(out)) { out << int(c[0]) << " " << int(c[1]) << " " << int(c[2]);
} else { out.write(reinterpret_cast<const char*>(&c), sizeof(c)); }
return out;
}
};
} // namespace CGAL
namespace utils {
template<typename Kernel, typename Region, typename Point_map>
void save_point_regions_2(
const Region& regions,
const std::string fullpath,
const Point_map point_map = Point_map()) {
using Point_3 = typename Kernel::Point_3;
using Color = std::array<unsigned char, 3>;
using Point_with_color = std::pair<Point_3, Color>;
using PLY_Point_map = CGAL::First_of_pair_property_map<Point_with_color>;
using PLY_Color_map = CGAL::Second_of_pair_property_map<Point_with_color>;
std::vector<Point_with_color> pwc;
srand(static_cast<unsigned int>(time(NULL)));
// Iterate through all regions.
for (const auto& region : regions) {
// Generate a random color.
const Color color =
CGAL::make_array(
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256));
// Iterate through all region items.
for (const auto item : region.second) {
const auto& point = get(point_map, item);
pwc.push_back(std::make_pair(Point_3(point.x(), point.y(), 0), color));
}
}
std::ofstream out(fullpath);
CGAL::IO::set_ascii_mode(out);
CGAL::IO::write_PLY_with_properties(
out, pwc,
CGAL::make_ply_point_writer(PLY_Point_map()),
std::make_tuple(
PLY_Color_map(),
CGAL::PLY_property<unsigned char>("red"),
CGAL::PLY_property<unsigned char>("green"),
CGAL::PLY_property<unsigned char>("blue")));
out.close();
}
template<typename Kernel, typename Region, typename Point_map>
void save_point_regions_3(
const Region& regions,
const std::string fullpath,
const Point_map point_map = Point_map()) {
using Point_3 = typename Kernel::Point_3;
using Color = std::array<unsigned char, 3>;
using Point_with_color = std::pair<Point_3, Color>;
using PLY_Point_map = CGAL::First_of_pair_property_map<Point_with_color>;
using PLY_Color_map = CGAL::Second_of_pair_property_map<Point_with_color>;
std::vector<Point_with_color> pwc;
srand(static_cast<unsigned int>(time(NULL)));
// Iterate through all regions.
for (const auto& region : regions) {
// Generate a random color.
const Color color =
CGAL::make_array(
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256));
// Iterate through all region items.
for (const auto item : region.second) {
const auto& point = get(point_map, *item);
pwc.push_back(std::make_pair(point, color));
}
}
std::ofstream out(fullpath);
CGAL::IO::set_ascii_mode(out);
CGAL::IO::write_PLY_with_properties(
out, pwc,
CGAL::make_ply_point_writer(PLY_Point_map()),
std::make_tuple(
PLY_Color_map(),
CGAL::PLY_property<unsigned char>("red"),
CGAL::PLY_property<unsigned char>("green"),
CGAL::PLY_property<unsigned char>("blue")));
out.close();
}
template<typename Kernel, typename Region, typename Segment_map>
void save_segment_regions_2(
const Region& regions,
const std::string fullpath,
const Segment_map segment_map = Segment_map()) {
using Point_3 = typename Kernel::Point_3;
using Color = std::array<unsigned char, 3>;
using Point_with_color = std::pair<Point_3, Color>;
using PLY_Point_map = CGAL::First_of_pair_property_map<Point_with_color>;
using PLY_Color_map = CGAL::Second_of_pair_property_map<Point_with_color>;
std::vector<Point_with_color> pwc;
srand(static_cast<unsigned int>(time(NULL)));
// Iterate through all regions.
for (const auto& region : regions) {
// Generate a random color.
const Color color =
CGAL::make_array(
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256));
// Iterate through all region items.
for (const auto item : region.second) {
const auto& segment = get(segment_map, item);
const auto& s = segment.source();
const auto& t = segment.target();
pwc.push_back(std::make_pair(Point_3(s.x(), s.y(), 0), color));
pwc.push_back(std::make_pair(Point_3(t.x(), t.y(), 0), color));
}
}
std::ofstream out(fullpath);
CGAL::IO::set_ascii_mode(out);
CGAL::IO::write_PLY_with_properties(
out, pwc,
CGAL::make_ply_point_writer(PLY_Point_map()),
std::make_tuple(
PLY_Color_map(),
CGAL::PLY_property<unsigned char>("red"),
CGAL::PLY_property<unsigned char>("green"),
CGAL::PLY_property<unsigned char>("blue")));
out.close();
}
template<typename Kernel, typename Regions, typename Segment_map>
void save_segment_regions_3(
const Regions& regions,
const std::string fullpath,
const Segment_map segment_map = Segment_map()) {
using Point_3 = typename Kernel::Point_3;
using Color = std::array<unsigned char, 3>;
using Point_with_color = std::pair<Point_3, Color>;
using PLY_Point_map = CGAL::First_of_pair_property_map<Point_with_color>;
using PLY_Color_map = CGAL::Second_of_pair_property_map<Point_with_color>;
std::vector<Point_with_color> pwc;
srand(static_cast<unsigned int>(time(NULL)));
// Iterate through all regions.
for (const auto& region : regions) {
// Generate a random color.
const Color color =
CGAL::make_array(
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256));
// Iterate through all region items.
for (const auto &item : region.second) {
const auto& segment = get(segment_map, item);
pwc.push_back(std::make_pair(segment.source(), color));
pwc.push_back(std::make_pair(segment.target(), color));
}
}
std::ofstream out(fullpath);
CGAL::IO::set_ascii_mode(out);
CGAL::IO::write_PLY_with_properties(
out, pwc,
CGAL::make_ply_point_writer(PLY_Point_map()),
std::make_tuple(
PLY_Color_map(),
CGAL::PLY_property<unsigned char>("red"),
CGAL::PLY_property<unsigned char>("green"),
CGAL::PLY_property<unsigned char>("blue")));
out.close();
}
// Define an insert iterator.
template<
typename Item,
typename Output_range,
typename Point_map,
typename Primitive>
struct Insert_point_colored_by_region_index {
using argument_type = std::pair< Primitive, std::vector<Item> >;
using result_type = void;
using Color_map =
typename Output_range:: template Property_map<unsigned char>;
const Point_map m_point_map;
Output_range& m_output_range;
std::size_t& m_number_of_regions;
Color_map m_red, m_green, m_blue;
Insert_point_colored_by_region_index(
const Point_map point_map,
Output_range& output_range,
std::size_t& number_of_regions) :
m_point_map(point_map),
m_output_range(output_range),
m_number_of_regions(number_of_regions) {
m_red = m_output_range.template add_property_map<unsigned char>("red", 0).first;
m_green = m_output_range.template add_property_map<unsigned char>("green", 0).first;
m_blue = m_output_range.template add_property_map<unsigned char>("blue", 0).first;
}
result_type operator()(const argument_type& region) {
CGAL::Random rand(static_cast<unsigned int>(m_number_of_regions));
const unsigned char r = static_cast<unsigned char>(64 + rand.get_int(0, 192));
const unsigned char g = static_cast<unsigned char>(64 + rand.get_int(0, 192));
const unsigned char b = static_cast<unsigned char>(64 + rand.get_int(0, 192));
for (Item index : region.second) {
const auto& point = get(m_point_map, index);
const auto it = m_output_range.insert(point);
m_red[*it] = r;
m_green[*it] = g;
m_blue[*it] = b;
}
++m_number_of_regions;
}
};
template<typename Polygon_mesh, typename Region>
void save_polygon_mesh_regions(
Polygon_mesh& polygon_mesh,
const Region& regions,
const std::string fullpath) {
using Color = CGAL::IO::Color;
srand(static_cast<unsigned int>(time(NULL)));
using Face_property_color = CGAL::dynamic_face_property_t<Color>;
using Face_color_map = typename boost::property_map<Polygon_mesh, Face_property_color>::type;
Face_color_map face_color = get(Face_property_color(), polygon_mesh);
// Iterate through all regions.
std::ofstream out(fullpath);
for (const auto& region : regions) {
// Generate a random color.
const Color color(
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256),
static_cast<unsigned char>(rand() % 256));
// Iterate through all region items.
for (const auto &item : region.second) {
put(face_color, item, color);
}
}
CGAL::IO::write_PLY(out, polygon_mesh, CGAL::parameters::face_color_map(face_color));
}
} // namespace utils
#endif // CGAL_SHAPE_DETECTION_EXAMPLES_UTILS_H
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