In addition to the default and copy constructors, the following static
methods should be available for constructing sites:
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SegmentDelaunayGraphStorageSite_2
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ss.construct_storage_site_2 ( Point_handle hp)
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Constructs a storage site from a
point handle. The storage site represents the point associated with
the point handle hp.
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SegmentDelaunayGraphStorageSite_2
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ss.construct_storage_site_2 ( Point_handle hp1, Point_handle hp2)
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Constructs a storage site from two point handles. The storage site
represents the segment the endpoints of which are the points
associated with the point handles hp1 and hp2.
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SegmentDelaunayGraphStorageSite_2
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ss.construct_storage_site_2 ( |
Point_handle hp1,
Point_handle hp2,
Point_handle hq1,
Point_handle hq2) |
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Constructs
a storage site from four point handles. The storage site represents
the point of intersection of the segments the endpoints of which are
the points associated with the point handles hp1, hp2 and
hq1 and hq2, respectively.
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SegmentDelaunayGraphStorageSite_2
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ss.construct_storage_site_2 ( |
Point_handle hp1,
Point_handle hp2,
Point_handle hq1,
Point_handle hq2,
bool b) |
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Constructs
a site from four point handles and a boolean. The storage site
represents a segment. If b is true, the first endpoint
of the segment is the point associated with the handle hp1 and
the second endpoint is the point of intersection of the segments the
endpoints of which are the point associated with the point handles
hp1, hp2 and hq1, hq2, respectively. If
b is false, the first endpoint of the represented
segment is the one mentioned above, whereas the second endpoint if
the point associated with the point handle hp2.
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SegmentDelaunayGraphStorageSite_2
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ss.construct_storage_site_2 ( |
Point_handle hp1,
Point_handle hp2,
Point_handle hq1,
Point_handle hq2,
Point_handle hr1,
Point_handle hr2) |
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Constructs a storage site from six
point handles. The storage site represents of segment the endpoints
of which are points of intersection of two pairs of segments, the
endpoints of which are hp1, hp2/hq1, hq2 and
hp1, hp2/hr1, hr2, respectively.
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bool
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ss.is_defined ()
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Returns true if the storage site
represents a valid point or segment.
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bool
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ss.is_point ()
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Returns true if the storage site
represents a point.
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bool
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ss.is_segment ()
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Returns true if the storage site
represents a segment.
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bool
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ss.is_input ()
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Returns true if the storage site
represents an input point or a segment defined by two input
points. Returns false if it represents a point of intersection
of two segments, or if it represents a segment, at least one
endpoint of which is a point of intersection of two segments.
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bool
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ss.is_input ( unsigned int i)
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Returns true if the
i-th endpoint of the corresponding site is an input
point. Returns false if the i-th endpoint of the
corresponding site is the intersection of two segments.
| Precondition: | i must be at most 1, and ss.is_segment()
must be true. |
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SegmentDelaunayGraphStorageSite_2
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ss.supporting_site ()
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Returns a storage site object representing the segment
that supports the segment represented by the storage site.
The returned storage site represents a site, both endpoints
of which are input points.
| Precondition: | ss.is_segment() must be true. |
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SegmentDelaunayGraphStorageSite_2
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ss.source_site ()
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Returns a storage site that represents the first endpoint of the
represented segment.
| Precondition: | ss.is_segment() must be true. |
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SegmentDelaunayGraphStorageSite_2
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ss.target_site ()
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Returns a storage site that represents the second endpoint of the
represented segment.
| Precondition: | ss.is_segment() must be true. |
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SegmentDelaunayGraphStorageSite_2
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ss.supporting_site ( unsigned int i)
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Returns a storage site object representing the i-th
segment that supports the point of intersection represented
by the storage site.
The returned storage site represents a site, both endpoints
of which are input points.
| Precondition: | i must be at most 1, ss.is_point() must be
true and ss.is_input() must be false. |
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SegmentDelaunayGraphStorageSite_2
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ss.crossing_site ( unsigned int i)
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Returns a storage site object representing the i-th
segment that supports the i-th endpoint of the site
which is not the supporting segment of the site.
The returned storage site represents a site, both endpoints
of which are input points.
| Precondition: | i must be at most 1,
ss.is_segment() must be true and
ss.is_input(i) must be false. |
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Site_2
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ss.site ()
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Returns the site represented by the storage
site.
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Point_handle
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ss.point ()
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Returns a handle associated with
the represented point. | Precondition: | is_point() and
is_input() must both be true. |
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Point_handle
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ss.source_of_supporting_site ()
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Returns a handle to the source point of the supporting site of the
this site. | Precondition: | is_segment() must be true. |
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Point_handle
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ss.target_of_supporting_site ()
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Returns a handle to the target point of the supporting site of the
this site. | Precondition: | is_segment() must be true. |
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Point_handle
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ss.source_of_supporting_site ( unsigned int i)
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Returns a handle to the source point of the i-th supporting
site of the this site.
| Precondition: | is_point() must be true, is_input()
must be false and i must either be 0 or 1. |
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Point_handle
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ss.target_of_supporting_site ( unsigned int i)
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Returns a handle to the target point of the i-th supporting
site of the this site.
| Precondition: | is_point() must be true, is_input()
must be false and i must either be 0 or 1. |
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Point_handle
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ss.source_of_crossing_site ( unsigned int i)
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Returns a handle to the source point of the i-th crossing site
of the this site.
| Precondition: | is_segment() must be true, is_input(i)
must be false and i must either be 0 or 1. |
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Point_handle
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ss.target_of_crossing_site ( unsigned int i)
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Returns a handle to the target point of the i-th supporting
site of the this site.
| Precondition: | is_segment() must be true, is_input(i)
must be false and i must either be 0 or 1. |
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