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CGAL 6.0 - Geometric Object Generators
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#include <CGAL/point_generators_2.h>
The class Points_on_segment_2 is a generator for points on a segment whose endpoints are specified upon construction.
The points are equally spaced.
PointGenerator CGAL::points_on_segment_2<Point_2> CGAL::Random_points_in_disc_2<Point_2, Creator> CGAL::Random_points_in_square_2<Point_2, Creator> CGAL::Random_points_in_triangle_2<Point_2, Creator> CGAL::Random_points_on_circle_2<Point_2, Creator> CGAL::Random_points_on_segment_2<Point_2, Creator> CGAL::Random_points_on_square_2<Point_2, Creator> CGAL::random_selection() Types | |
| typedef std::input_iterator_tag | iterator_category |
| typedef Point_2 | value_type |
| typedef std::ptrdiff_t | difference_type |
| typedef const Point_2 * | pointer |
| typedef const Point_2 & | reference |
| Points_on_segment_2 (const Point_2 &p, const Point_2 &q, std::size_t n, std::size_t i=0) | |
creates an input iterator g generating points of type P equally spaced on the segment from \( p\) to \( q\). | |
Operations | |
| double | range () |
returns the range in which the point coordinates lie, i.e. \( \forall x: |x| \leq\) range() and \( \forall y: |y| \leq\)range() | |
| const Point_2 & | source () |
| returns the source point of the segment. | |
| const Point_2 & | target () |
| returns the target point of the segment. | |
| CGAL::Points_on_segment_2< Point_2 >::Points_on_segment_2 | ( | const Point_2 & | p, |
| const Point_2 & | q, | ||
| std::size_t | n, | ||
| std::size_t | i = 0 |
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creates an input iterator g generating points of type P equally spaced on the segment from \( p\) to \( q\).
\( n-i\) points are placed on the segment defined by \( p\) and \( q\). Values of the index parameter \( i\) larger than 0 indicate starting points for the sequence further from \( p\). Point \( p\) has index value 0 and \( q\) has index value \( n-1\).
The expressions to_double(p.x()) and to_double(p.y()) must result in the respective double representation of the coordinates of \( p\), and similarly for \( q\).