songsenand
/
cgal
mirror of https://github.com/CGAL/cgal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

compatibility old version of boost

This commit is contained in:
Remy Thomasse 2014-08-07 15:38:49 +02:00
parent 30c93188c5
commit b3514854de
4 changed files with 48 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Generator/examples/Generator/random_convex_hull_2.cpp
View File

@ -15,7 +15,7 @@ int main( )
{
int N=10000;
std::vector<Point> v;
boost::random::mt19937 gen;
boost::mt19937 gen;
gen.seed(time(0));
random_convex_hull_in_disc_2(N,RADIUS,gen,std::back_inserter(v),K());

60
Generator/include/CGAL/random_convex_hull_in_disc_2.h
View File

@ -25,7 +25,6 @@
#ifndef CGAL_RANDOM_CONVEX_HULL_DISC_H
#define CGAL_RANDOM_CONVEX_HULL_DISC_H
#include <boost/random.hpp>
//#include <cmath>
#include <CGAL/Polygon_2_algorithms.h>
@ -36,8 +35,6 @@ struct compare_points_angle {
bool operator()(const P& p, const P& q) {
P zero(0,0);
Traits traits;
//typedef typename Traits::Left_turn_2 Left_turn;
//Left_turn left_turn = traits.left_turn_2_object();
typedef typename Traits::Orientation_2 Orientation_2;
Orientation_2 orientation_2=traits.orientation_2_object();
typedef typename Traits::Compare_y_2 Compare_y_2;
@ -45,7 +42,7 @@ struct compare_points_angle {
if (compare_y_2(p, zero) == LARGER ){
if (compare_y_2(q, zero)==LARGER)
return (orientation_2(zero,p,q)==LEFT_TURN);//left_turn(zero, p, q);
return (orientation_2(zero,p,q)==LEFT_TURN);
else
return false;
@ -53,7 +50,7 @@ struct compare_points_angle {
if (compare_y_2(q,zero)==LARGER)
return true;
else
return (orientation_2(zero,p,q)==LEFT_TURN);//left_turn(zero, p, q);
return (orientation_2(zero,p,q)==LEFT_TURN);
}
}
};
@ -64,8 +61,8 @@ void generate_points_annulus(long n, double a, double b, double small_radius,
double big_radius, std::list<P>& l,
GEN& gen) { // generate n points between a and b
if (n > 1) {
boost::random::binomial_distribution<long> bin_distribution(n, .5);
boost::random::variate_generator<GEN&, boost::binomial_distribution<long> >
boost::binomial_distribution<long> bin_distribution(n, .5);
boost::variate_generator<GEN&, boost::binomial_distribution<long> >
g(gen, bin_distribution);
long nb = g();
generate_points_annulus(nb, a, (a + b) / 2.0, small_radius, big_radius, l,
@ -75,6 +72,19 @@ void generate_points_annulus(long n, double a, double b, double small_radius,
}
if (n == 1) // generation of a point
{
#if BOOST_VERSION < 104700
boost::uniform_real<double> random_squared_radius_distribution(
small_radius * small_radius / (big_radius * big_radius), 1);
boost::uniform_real<double> random_angle_distribution(a, b);
boost::variate_generator<
GEN&, boost::uniform_real<double> > random_angle(gen, random_angle_distribution);
boost::variate_generator<
GEN&, boost::uniform_real<double> > random_squared_radius(gen, random_squared_radius_distribution);
#else
boost::random::uniform_real_distribution<double> random_squared_radius_distribution(
small_radius * small_radius / (big_radius * big_radius), 1);
@ -83,9 +93,12 @@ void generate_points_annulus(long n, double a, double b, double small_radius,
GEN&, boost::random::uniform_real_distribution<double> > random_angle(gen, random_angle_distribution);
boost::random::variate_generator<
GEN&, boost::random::uniform_real_distribution<double> > random_squared_radius(gen, random_squared_radius_distribution);
#endif
double alpha = random_angle();
double r = big_radius * std::sqrt(random_squared_radius());
typedef Creator_uniform_2<double, P> Creator;
typedef Creator_uniform_2<double, P> Creator;
Creator creator;
typedef typename Creator::argument_type T;
l.push_back(creator(T(r * cos(alpha)), T(r * std::sin(alpha))));
@ -107,29 +120,29 @@ void Graham_without_sort_2(std::list<P>& l, const Traits& traits) {
//typedef typename Traits::Left_turn_2 Left_turn;
//Left_turn left_turn = traits.left_turn_2_object();
typedef typename Traits::Orientation_2 Orientation_2;
typedef typename std::list<P>::iterator Iterator;
Orientation_2 orientation_2=traits.orientation_2_object();
typedef typename Traits::Compare_x_2 Compare_x_2;
Compare_x_2 compare_x_2=traits.compare_x_2_object();
typename std::list<P>::iterator pmin = l.begin();
for (typename std::list<P>::iterator it = l.begin(); it != l.end(); ++it) {
Iterator pmin = l.begin();
for (Iterator it = l.begin(); it != l.end(); ++it) {
//if ((*pmin).x() > (*it).x()) {
if (compare_x_2(*pmin, *it) == LARGER){
pmin = it;
}
} //*pmin is the extremal point on the left
typename std::list<P>::iterator u = pmin;
typename std::list<P>::iterator u_next = u;
Iterator u = pmin;
Iterator u_next = u;
Cyclic_increment(u_next, l);
typename std::list<P>::iterator u_next_next = u_next;
Iterator u_next_next = u_next;
Cyclic_increment(u_next_next, l);
while (u_next != pmin) {
//if (left_turn(*u, *u_next, *u_next_next)) {
if (orientation_2(*u,*u_next,*u_next_next)==LEFT_TURN){
Cyclic_increment(u, l);
Cyclic_increment(u_next, l);
@ -159,7 +172,6 @@ void random_convex_hull_in_disc_2(std::size_t n, double radius, std::list<typena
GEN& gen, const Traits& traits,
bool fast = true) {
CGAL_precondition(n >= 3);
// typedef typename Kernel_traits<P>::Kernel K;
typedef typename Traits::Point_2 P;
typedef typename Traits::FT FT;
std::size_t simulated_points = 0;
@ -184,7 +196,7 @@ void random_convex_hull_in_disc_2(std::size_t n, double radius, std::list<typena
Graham_without_sort_2(l, traits);
} while ((bounded_side_2(l.begin(), l.end(), zero, traits) !=
ON_BOUNDED_SIDE) &&
(simulated_points < n)); // initialisation such that 0 in P_n
(simulated_points < n)); // initialization such that 0 in P_n
std::size_t T = n;
if (!fast) T = static_cast<std::size_t>(std::floor(n / std::pow(std::log(n), 2)));
@ -195,14 +207,12 @@ void random_convex_hull_in_disc_2(std::size_t n, double radius, std::list<typena
{
typename std::list<P>::iterator it = l.begin();
while (compare_y_2(*it,zero) == LARGER){
//while (to_double((*it).y()) > 0) {
l.push_back(*it);
l.pop_front();
it = l.begin();
}
it = l.end();
--it; // last element
// while (to_double((*it).y()) < 0) {
while (compare_y_2(*it,zero) == SMALLER){
l.push_front(*it);
l.pop_back();
@ -219,23 +229,21 @@ void random_convex_hull_in_disc_2(std::size_t n, double radius, std::list<typena
for (; it != l.end();
++it, Cyclic_increment(it2, l)) { // computation of annulus
typename Traits::Segment_2 s(*it, *it2);
//double temp = to_double(squared_distance(s, zero));
FT temp=squared_distance(s,zero);
if ( compare(squared_small_radius,temp) == LARGER ) squared_small_radius=temp;
//if (squared_small_radius > temp) squared_small_radius = temp;
}
} // squared_small_radius=squared small radius of the annulus
FT p_disc = squared_small_radius / squared_radius;
std::size_t nb;
long nb;
if (simulated_points < T) {
nb = std::min(simulated_points, n - simulated_points);
nb = static_cast<long>(std::min(simulated_points, n - simulated_points));
} else {
nb = std::min(T, n - simulated_points);
nb = static_cast<long>(std::min(T, n - simulated_points));
}
boost::random::binomial_distribution<long> dbin(nb, to_double(p_disc));
boost::random::variate_generator<
GEN&, boost::random::binomial_distribution<long> > bin(gen, dbin);
boost::binomial_distribution<long> dbin(nb, to_double(p_disc));
boost::variate_generator<
GEN&, boost::binomial_distribution<long> > bin(gen, dbin);
// How many points are falling in the small disc and wont be generated:
long k_disc = bin();

14
Generator/test/Generator/random_hull_test.cpp
View File

@ -14,18 +14,26 @@ main( )
{
Polygon_2 p;
Polygon_2 p,q;
int n( 1000);
boost::random::mt19937 gen;
boost::mt19937 gen(0);
// build random hull from n random points in a disc:
random_convex_hull_in_disc_2(n,1.0,gen,std::back_inserter(p),K());
random_convex_hull_in_disc_2(n,1.0,gen,std::back_inserter(p),K(), true);
// check convexity:
if ( ! p.is_convex()) {
std::cerr << "ERROR: polygon is not convex." << std::endl;
return 1;
}
// build random hull from n random points in a disc:
random_convex_hull_in_disc_2(n,1.0,gen,std::back_inserter(q),K(), false);
// check convexity:
if ( ! q.is_convex()) {
std::cerr << "ERROR: polygon is not convex." << std::endl;
return 1;
}
return 0;
} // int main( )

2
GraphicsView/demo/Generator/Generator_2.cpp
View File

@ -269,7 +269,7 @@ void
MainWindow::on_actionGeneratePolytopeInDisc_triggered()
{
typedef CGAL::Points_on_segment_2<Point_2> PG;
boost::random::mt19937 gen;
boost::mt19937 gen;
gen.seed(time(0));
std::vector<Point_2> points;
QRectF rect = CGAL::Qt::viewportsBbox(&scene);