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A vertex record in an envelope diagram. It is always associated with a point on the lower (upper) envelope of a non-empty set of curves. A vertex is also associated with a set of x-monotone curves that induce the envelope over this point. It is incident to two edges, one lying to its left and the other to its right.
| EnvelopeDiagramVertex v; | |
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default constructor.
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| EnvelopeDiagramVertex v ( other); | |
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copy constructor.
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| EnvelopeDiagramVertex v ( Point_2 p); | |
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constructs a vertex associated with the given point p.
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| Point_2 | v.point () const | returns the point associated with v. |
| Size | v.number_of_curves () const | returns the number of x-monotone curves associated with v. |
| Curve_const_iterator | v.curves_begin () const | return an iterator for the first x-monotone curve associated with v. |
| Curve_const_iterator | v.curves_end () const | return a past-the-end iterator for the x-monotone curves associated with v. |
| Edge_const_handle | v.left () const | returns the edge lying to v's left. |
| Edge_const_handle | v.right () const | returns the edge lying to v's right. |
| void | v.set_point ( Point_2 p) | associates the point p with v. |
| void | v.clear_curves () | clears the set of curves associated with v. |
| void | v.add_curve ( X_monotone_curve_2 cv) | |
| adds the x-monotone curve cv to the set of curves associated with v. | ||
| void | v.add_curves ( Curve_const_iterator begin, Curve_const_iterator end) | |
| adds the given range of x-monotone curves to the set of curves associated with v. | ||
| void | v.set_left ( Edge_const_handle e) | |
| sets the edge lying to the left of v to be e. | ||
| void | v.set_right ( Edge_const_handle e) | |
| sets the edge lying to the right of v to be e. | ||