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CGAL 5.3 - Geometric Object Generators
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CGAL 5.3 - Geometric Object Generators
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The concept RandomConvexHullTraits_2 describes the requirements for the traits class used by the function random_convex_hull_in_disc_2().
Operations
The following two member functions returning instances of the above predicate object types are required.
Types | |
| typedef unspecified_type | FT |
| The coordinate type of the points of the polygon. | |
| typedef unspecified_type | Point_2 |
| The point type of the polygon. | |
| typedef unspecified_type | Segment_2 |
| The segment type of the polygon. | |
| typedef unspecified_type | Orientation_2 |
| Predicate object type that determines the orientation of three points. More... | |
| typedef unspecified_type | Compare_x_2 |
| A function object to compare the x-coordinate of two points. More... | |
| typedef unspecified_type | Compare_y_2 |
| A function object to compare the y-coordinate of two points. More... | |
Operations | |
| Compare_x_2 | compare_x_2_object () |
| Compare_y_2 | compare_y_2_object () |
| Orientation_2 | orientation_2_object () |
A function object to compare the x-coordinate of two points.
Provides the operator:
Comparison_result operator()(Point p, Point q)
which returns SMALLER, EQUAL or LARGER according to the \( x\)-ordering of points p and q.
A function object to compare the y-coordinate of two points.
Provides the operator:
Comparison_result operator()(Point p, Point q)
which returns (SMALLER, EQUAL or LARGER) according to the \( y\)-ordering of points p and q.
Predicate object type that determines the orientation of three points.
It must provide Orientation operator()(Point_2 p, Point_2 q, Point_2 r) that returns LEFT_TURN, if \( r\) lies to the left of the oriented line \( l\) defined by \( p\) and \( q\), returns RIGHT_TURN if \( r\) lies to the right of \( l\), and returns COLLINEAR if \( r\) lies on \( l\).
1.8.13