本文整理汇总了C++中Traits::construct_vector_3_object方法的典型用法代码示例。如果您正苦于以下问题：C++ Traits::construct_vector_3_object方法的具体用法？C++ Traits::construct_vector_3_object怎么用？C++ Traits::construct_vector_3_object使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Traits的用法示例。
在下文中一共展示了Traits::construct_vector_3_object方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: test_sphere_parameters
bool test_sphere_parameters() {
const int NB_ROUNDS = 10;
const int NB_POINTS = 1000;
typedef typename K::FT FT;
typedef CGAL::Point_with_normal_3<K> Pwn;
typedef CGAL::Point_3<K> Point;
typedef std::vector<Pwn> Pwn_vector;
typedef CGAL::Identity_property_map<Pwn> Point_map;
typedef CGAL::Normal_of_point_with_normal_pmap<K> Normal_map;
typedef CGAL::Shape_detection_3::Efficient_RANSAC_traits<
K, Pwn_vector, Point_map, Normal_map> Traits;
typedef CGAL::Shape_detection_3::Efficient_RANSAC<Traits> Efficient_ransac;
typedef CGAL::Shape_detection_3::Sphere<Traits> Sphere;
std::size_t success = 0;
for (int i = 0;i<NB_ROUNDS;i++) {
Pwn_vector points;
// generate random points on random sphere
FT radius = 0;
Point center;
CGAL::Bbox_3 bbox(-10, -10, -10, 10, 10, 10);
sample_random_sphere_in_box(NB_POINTS, bbox, center,
radius, std::back_inserter(points));
// add outliers in second half of rounds
if (i >= NB_ROUNDS / 2)
for (std::size_t j = 0; j < NB_POINTS / 2; j++)
points.push_back(random_pwn_in<K>(bbox));
Efficient_ransac ransac;
Traits traits = ransac.traits();
ransac.template add_shape_factory<Sphere>();
ransac.set_input(points);
// Set cluster epsilon to a high value as just the parameters of
// the extracted primitives are to be tested.
typename Efficient_ransac::Parameters parameters;
parameters.probability = 0.05f;
parameters.min_points = NB_POINTS/10;
parameters.epsilon = 0.002f;
parameters.cluster_epsilon = 1.0f;
parameters.normal_threshold = 0.9f;
if (!ransac.detect(parameters)) {
std::cout << " aborted" << std::endl;
return false;
}
typename Efficient_ransac::Shape_range shapes = ransac.shapes();
// check: unique shape detected
if (shapes.size() != 1)
continue;
boost::shared_ptr<Sphere> sphere = boost::dynamic_pointer_cast<Sphere>((*shapes.first));
// check: shape detected is a cylinder
if (!sphere)
continue;
// Check radius and alignment with axis.
if (CGAL::abs(radius - sphere->radius()) > (FT) 0.02)
continue;
// Check center.
Point pos = sphere->center();
FT center_pos_sqlen = traits.compute_squared_length_3_object()(
traits.construct_vector_3_object()(center, pos));
if (center_pos_sqlen > FT(0.0004))
continue;
std::string info = sphere->info();
success++;
}
if (success >= NB_ROUNDS * 0.8) {
std::cout << " succeeded" << std::endl;
return true;
}
else {
std::cout << " failed" << std::endl;
return false;
}
}