CGAL 4.10.2 - 2D Envelopes
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An edge record in an envelope diagram, which represents a continuous portion of the x-axis. It is associated with a (possibly empty) set of curves that induce the envelope over this portion of the x-axis. Note that all curves in this set overlap over the interval represented by the edge.
Types | |
typedef unspecified_type | Size |
the size type (convertible to size_t ). | |
typedef unspecified_type | Vertex |
the corresponding diagram-vertex type. | |
typedef unspecified_type | X_monotone_curve_2 |
the x-monotone curve type. | |
Creation | |
EnvelopeDiagramEdge () | |
default constructor. | |
EnvelopeDiagramEdge (const EnvelopeDiagramEdge &other) | |
copy constructor. | |
Access Functions | |
Size | number_of_curves () const |
returns the number of x-monotone curves associated with e . | |
bool | is_empty () const |
returns whether e represents an empty interval - namely, whether the set of x-monotone curves associated with it is empty. | |
const X_monotone_curve_2 & | curve () const |
returns a representative x-monotone curve associated with e . More... | |
Curve_const_iterator | curves_begin () const |
returns an iterator for the first x-monotone curve associated with e . | |
Curve_const_iterator | curves_end () const |
returns a past-the-end iterator for the x-monotone curves associated with e . | |
Vertex_const_handle | left () const |
returns the vertex lying to e 's left. More... | |
Vertex_const_handle | right () const |
returns the vertex lying to e 's right. More... | |
Modifiers | |
void | clear_curves () |
clears the set of curves associated with e . | |
void | add_curve (const X_monotone_curve_2 &cv) |
adds the x-monotone curve cv to the set of curves associated with e . | |
void | 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 e . | |
void | set_left (Vertex_const_handle v) |
sets the vertex lying to the left of e to be v . | |
void | set_right (Vertex_const_handle v) |
sets the vertex lying to the right of e to be v . | |
const X_monotone_curve_2& EnvelopeDiagramEdge::curve | ( | ) | const |
returns a representative x-monotone curve associated with e
.
e
does not represent an empty interval. Vertex_const_handle EnvelopeDiagramEdge::left | ( | ) | const |
returns the vertex lying to e
's left.
e
is not the leftmost edge in the diagram. Vertex_const_handle EnvelopeDiagramEdge::right | ( | ) | const |
returns the vertex lying to e
's right.
e
is not the rightmost edge in the diagram.