Boost-Commit mailing page: [Boost-commit] svn:boost r78255

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Subject: [Boost-commit] svn:boost r78255 - in sandbox/gtl: boost/polygon doc
From: sydorchuk.andriy_at_[hidden]
Date: 2012-04-29 11:06:00

Author: asydorchuk
Date: 2012-04-29 11:05:58 EDT (Sun, 29 Apr 2012)
New Revision: 78255
URL: http://svn.boost.org/trac/boost/changeset/78255

Log:
Finishing segment concept documentation page.

Text files modified:
   sandbox/gtl/boost/polygon/segment_concept.hpp | 128 ++++++++++++------------
   sandbox/gtl/boost/polygon/segment_data.hpp | 8
   sandbox/gtl/doc/gtl_segment_concept.htm | 210 ++++++++++++++++++++--------------------
   3 files changed, 174 insertions(+), 172 deletions(-)

Modified: sandbox/gtl/boost/polygon/segment_concept.hpp
==============================================================================
--- sandbox/gtl/boost/polygon/segment_concept.hpp (original)
+++ sandbox/gtl/boost/polygon/segment_concept.hpp 2012-04-29 11:05:58 EDT (Sun, 29 Apr 2012)
@@ -112,26 +112,35 @@

 template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_set,
 typename is_mutable_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 void
>::type
- set(Segment& segment, direction_1d dir, const Point& value) {
- segment_mutable_traits<Segment>::set(segment, dir, value);
+ set(Segment& segment, direction_1d dir, const Point& point) {
+ segment_mutable_traits<Segment>::set(segment, dir, point);
 }

 struct y_s_construct : gtl_yes {};

 template <typename Segment, typename Point1, typename Point2>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_4<
 y_s_construct,
 typename is_mutable_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point1>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point2>::type
>::type
>::type,
 Segment
@@ -174,8 +183,8 @@
>::type,
 Segment1
>::type &
- assign(Segment1& lvalue, const Segment2& rvalue) {
- return lvalue = copy_construct<Segment1>(rvalue);
+ assign(Segment1& segment1, const Segment2& segment2) {
+ return segment1 = copy_construct<Segment1>(segment2);
 }

 struct y_s_equivalence : gtl_yes {};
@@ -201,18 +210,20 @@
 struct y_s_on_above_or_below : gtl_yes {};

 //-1 for below, 0 for on and 1 for above
- template <typename Segment>
+ template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_on_above_or_below,
 typename is_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 bool
>::type
- on_above_or_below(const Segment& segment,
- const typename segment_point_type<Segment>::type& point) {
+ on_above_or_below(const Segment& segment, const Point& point) {
 typedef polygon_arbitrary_formation<
 typename segment_coordinate_type<Segment>::type
> paf;
@@ -225,24 +236,25 @@

 struct y_s_contains : gtl_yes {};

- template <typename Segment>
+ template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_contains,
 typename is_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 bool
>::type
- contains(const Segment& segment,
- const typename segment_point_type<Segment>::type& point,
- bool consider_touch = true ) {
- if(!on_above_or_below(segment, point)) {
+ contains(const Segment& segment, const Point& point, bool consider_touch = true ) {
+ if (!on_above_or_below(segment, point)) {
 rectangle_data<typename segment_coordinate_type<Segment>::type> rect;
 set_points(rect, low(segment), high(segment));
- if(area(rect) == 0.0) {
- if(!consider_touch) {
+ if (area(rect) == 0.0) {
+ if (!consider_touch) {
 return !equivalence(point, low(segment)) &&
 !equivalence(point, high(segment));
 }
@@ -267,16 +279,13 @@
>::type,
 bool
>::type
- contains(const Segment1& segment1,
- const Segment2& segment2,
- bool consider_touch = true) {
+ contains(const Segment1& segment1, const Segment2& segment2, bool consider_touch = true) {
 return contains(segment1, get(segment2, LOW), consider_touch) &&
 contains(segment1, get(segment2, HIGH), consider_touch);
 }

 struct y_s_low : gtl_yes {};

- // get the low point
 template <typename Segment>
 typename enable_if<
 typename gtl_and<
@@ -293,7 +302,6 @@

 struct y_s_high : gtl_yes {};

- // get the high point
 template <typename Segment>
 typename enable_if<
 typename gtl_and<
@@ -310,7 +318,6 @@

 struct y_s_center : gtl_yes {};

- // get the center point
 template <typename Segment>
 typename enable_if<
 typename gtl_and<
@@ -329,37 +336,39 @@

 struct y_s_low2 : gtl_yes {};

- // set the low point to v
- template <typename Segment>
+ template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_low2,
 typename is_mutable_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 void
>::type
- low(Segment& segment,
- const typename segment_point_type<Segment>::type& point) {
+ low(Segment& segment, const Point& point) {
 set(segment, LOW, point);
 }

 struct y_s_high2 : gtl_yes {};

- // set the high coordinate to v
- template <typename Segment>
+ template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_high2,
 typename is_mutable_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 void
>::type
- high(Segment& segment,
- const typename segment_point_type<Segment>::type& point) {
+ high(Segment& segment, const Point& point) {
 set(segment, HIGH, point);
 }

@@ -381,7 +390,6 @@

 struct y_s_scale_up : gtl_yes {};

- // scale segment by factor
 template <typename Segment>
 typename enable_if<
 typename gtl_and<
@@ -465,7 +473,6 @@

 struct y_s_move : gtl_yes {};

- // move segment by delta
 template <typename Segment>
 typename enable_if<
 typename gtl_and<
@@ -486,19 +493,20 @@

 struct y_s_convolve : gtl_yes {};

- // convolve this with point
- template <typename Segment>
+ template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_convolve,
 typename is_mutable_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 Segment
>::type &
- convolve(Segment& segment,
- const typename segment_point_type<Segment>::type& point) {
+ convolve(Segment& segment, const Point& point) {
 typename segment_point_type<Segment>::type l = low(segment), h = high(segment);
 low(segment, convolve(l, point));
 high(segment, convolve(h, point));
@@ -507,19 +515,20 @@

 struct y_s_deconvolve : gtl_yes {};

- // deconvolve this with point
- template <typename Segment>
+ template <typename Segment, typename Point>
 typename enable_if<
- typename gtl_and<
+ typename gtl_and_3<
 y_s_deconvolve,
 typename is_mutable_segment_concept<
 typename geometry_concept<Segment>::type
+ >::type,
+ typename is_point_concept<
+ typename geometry_concept<Point>::type
>::type
>::type,
 Segment
>::type &
- deconvolve(Segment& segment,
- const typename segment_point_type<Segment>::type& point) {
+ deconvolve(Segment& segment, const Point& point) {
 typename segment_point_type<Segment>::type l = low(segment), h = high(segment);
 low(segment, deconvolve(l, point));
 high(segment, deconvolve(h, point));
@@ -528,7 +537,6 @@

 struct y_s_e_dist : gtl_yes {};

- // distance from a point to a segment
 template <typename Segment, typename Point>
 typename enable_if<
 typename gtl_and_3<
@@ -556,23 +564,22 @@
 Unit D = y2 - y1;
 Unit length_sq = C * C + D * D;
 Unit param = (A * C + B * D)/length_sq;
- if(param > 1.0) {
+ if (param > 1.0) {
 return euclidean_distance(high(segment), point);
- } else if(param < 0.0) {
+ } else if (param < 0.0) {
 return euclidean_distance(low(segment), point);
 }
 Unit denom = sqrt(length_sq);
- if(denom == 0.0)
+ if (denom == 0.0)
 return 0.0;
 Unit result = (A * D - C * B) / denom;
- if(result < 0.0)
+ if (result < 0.0)
 result *= -1;
 return result;
 }

 struct y_s_e_dist2 : gtl_yes {};

- // distance between two segments
 template <typename Segment1, typename Segment2>
 typename enable_if<
 typename gtl_and_3<
@@ -590,13 +597,12 @@
 typename segment_distance_type<Segment1>::type
 result1 = euclidean_distance(segment1, low(segment2)),
 result2 = euclidean_distance(segment1, high(segment2));
- if(result2 < result1) return result2;
+ if (result2 < result1) return result2;
 return result1;
 }

 struct y_s_e_intersects : gtl_yes {};

- // check if Interval b intersects `this` Interval
 template <typename Segment1, typename Segment2>
 typename enable_if<
 typename gtl_and_3<
@@ -610,12 +616,11 @@
>::type,
 bool
>::type
- intersects(const Segment1& segment1,
- const Segment2& segment2,
+ intersects(const Segment1& segment1, const Segment2& segment2,
 bool consider_touch = true) {
- if(consider_touch) {
- if(low(segment1) == low(segment2) || low(segment1) == high(segment2) ||
- high(segment1) == low(segment2) || high(segment1) == high(segment2))
+ if (consider_touch) {
+ if (low(segment1) == low(segment2) || low(segment1) == high(segment2) ||
+ high(segment1) == low(segment2) || high(segment1) == high(segment2))
 return true;
 }
 typedef polygon_arbitrary_formation<
@@ -632,7 +637,6 @@

 struct y_s_e_bintersect : gtl_yes {};

- // check if Interval b partially overlaps `this` Interval
 template <typename Segment1, typename Segment2>
 typename enable_if<
 typename gtl_and_3<
@@ -656,7 +660,6 @@

 struct y_s_abuts1 : gtl_yes {};

- // check if they are end to end
 template <typename Segment1, typename Segment2>
 typename enable_if<
 typename gtl_and_3<
@@ -677,7 +680,6 @@

 struct y_s_abuts2 : gtl_yes {};

- // check if they are end to end
 template <typename Segment1, typename Segment2>
 typename enable_if<
 typename gtl_and_3<
@@ -730,7 +732,7 @@
 assign(h2, high(segment2));
 typename paf::half_edge he1(l1, h1), he2(l2, h2);
 typename paf::compute_intersection_pack pack;
- if(pack.compute_intersection(pt, he1, he2, projected, round_closest)) {
+ if (pack.compute_intersection(pt, he1, he2, projected, round_closest)) {
 assign(intersection, pt);
 return true;
 }

Modified: sandbox/gtl/boost/polygon/segment_data.hpp
==============================================================================
--- sandbox/gtl/boost/polygon/segment_data.hpp (original)
+++ sandbox/gtl/boost/polygon/segment_data.hpp 2012-04-29 11:05:58 EDT (Sun, 29 Apr 2012)
@@ -59,16 +59,16 @@

     inline point_type low() const { return points_[0]; }

- inline point_type& low(const point_type& low) {
+ inline segment_data& low(const point_type& point) {
       points_[0] = low;
       return *this;
     }

     inline point_type high() const {return points_[1]; }

- inline point_type& high(const point_type& high) {
- points_[1] = high;
- return *this;
+ inline segment_data& high(const point_type& point) {
+ points_[1] = point;
+ return *this;
     }

     inline bool operator==(const segment_data& that) const {

Modified: sandbox/gtl/doc/gtl_segment_concept.htm
==============================================================================
--- sandbox/gtl/doc/gtl_segment_concept.htm (original)
+++ sandbox/gtl/doc/gtl_segment_concept.htm 2012-04-29 11:05:58 EDT (Sun, 29 Apr 2012)
@@ -6,6 +6,8 @@
--><title>Boost Polygon Library: Segment Concept</title>

+
+



@@ -15,7 +17,7 @@

 <tbody>
 <tr>
- <td style="background-color: rgb(238, 238, 238);" valign="top" nowrap="1">
+ <td style="background-color: rgb(238, 238, 238);" nowrap="1" valign="top">
 <div style="padding: 5px;" align="center"> <img src="images/boost.png" border="0" height="86" width="277" /><a title="www.boost.org home page" href="http://www.boost.org/" tabindex="2" style="border: medium none ;"> </a> </div>
 <div style="margin: 5px;">
 <h3 class="navbar">Contents</h3>
@@ -107,7 +109,7 @@
segment traits.  Specialization of these traits is required for
types that don't conform to the default behavior.

- template <typename Segment> 
+ template <typename Segment> 
 struct segment_traits { 
   typedef typename Segment::coordinate_type coordinate_type; 
   typedef typename Segment::point_type point_type; 
@@ -133,7 +135,7 @@
    return Segment(p1, p2); 
  } 
}; 
- 
+ 

 Example code custom_segment.cpp
demonstrates how to map a user defined segment class to the library segment_concept.
@@ -143,58 +145,58 @@
 <tr>
 <td width="586">template
<typename Segment> point_type get(const Segment& segment, direction_1d dir)</td>
- <td>Expects a model of segment.  Returns the low or high endpoint of the segment, depending on
+ <td>Returns the low or high endpoint of an object that models a segment, depending on
the direction_1d value. </td>
 </tr>
 <tr>
 <td width="586">template
<typename Segment, typename Point> 
void set(Segment& segment, direction_1d dir, 
-         const point_type& Point)</td>
- <td>Expects
-a model of segment. Sets the low or high endpoint of the segment to the
+         const Point& point)</td>
+ <td>Sets the low or high endpoint of an object that models a segment to an object that models a
point, depending on the direction_1d  value.</td>
 </tr>
 <tr>
 <td width="586">template <typename Segment, typename Point1, typename Point2> 
Segment construct(const Point1& low, const Point2& high)</td>
- <td>Construct an object that is a model of segment given both endpoints.</td>
+ <td>Construct an object that is a model of segment given the two objects that are models of point.</td>
 </tr>
 <tr>
- <td style="vertical-align: top;">template <typename Segment1, typename Segment2> Segment1 copy_construct(const Segment2>& segment)</td>
+ <td style="vertical-align: top;">template <typename Segment1, typename Segment2> Segment1 copy_construct(const Segment2& segment)</td>
 <td style="vertical-align: middle; text-align: left;">Copy construct an object that is a model of segment given another segment.</td>
 </tr>
<tr>
 <td width="586">template
<typename Segment1, typename Segment2> 
- Segment1& assign(Segment1& lvalue, const Segment2& rvalue)</td>
- <td>Copies data from right object that models segment into
-left object that models segment.</td>
+ Segment1& assign(Segment1& segment1, 
+                 const Segment2& segment2)</td>
+ <td>Copies data from the right object that models segment into
+the left object that models segment.</td>
 </tr>
 <tr>
 <td width="586">template
<typename Segment1, typename Segment1> 
bool equivalence(const Segment1& segment1, 
                 const Segment1& segment2)</td>
- <td>Given two objects that model segment, compares and
+ <td>Given two objects that model a segment, compares and
returns true if their low and high values are respectively equal to each
other.</td>
 </tr>
 <tr>
- <td style="vertical-align: top;">template <typename segment_type> 
- bool on_above_or_below(const segment_type& segment, 
+ <td style="vertical-align: top;">template <typename Segment, typename Point> 
+ bool on_above_or_below(const Segment& segment, 
                       
-const point_type& point) 
+const Point& point) 
 </td>
- <td>Returns true if an object that is a model of segment and the given point are collinear, else false. 
+ <td>Returns false if an object that is a model of segment and an object that is a model of point are collinear, else true. 
 </td>
 </tr>
 <tr>
- <td style="vertical-align: top;">template <typename Segment> 
+ <td style="vertical-align: top;">template <typename Segment, typename Point> 
 bool contains(const Segment& segment, 
-     point_type value, bool consider_touch) 
+     const Point& value, bool consider_touch) 
 </td>
- <td>Returns true if an first object that is a model of segment contains the given point, else false. 
+ <td>Returns true if an object that is a model of segment contains an object that is a model of point, else false. 
 </td>
 </tr>
 <tr>
@@ -210,29 +212,29 @@
 <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment> 
point_type low(const Segment& segment) 
 </td>
- <td>Gets the low endpoint of an object that is a model of segment. 
+ <td>Returns the low endpoint of an object that is a model of segment. 
 </td>
 </tr>
 <tr>
 <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment> 
point_type high(const Segment& segment)</td>
- <td>Gets the high endpoint of an object that is a model of segment. 
+ <td>Returns the high endpoint of an object that is a model of segment. 
 </td>
 </tr>
 <tr>
 <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment> 
point_type center(const Segment& segment)</td>
- <td>Gets the centeral point of an object that is a model of segment. 
+ <td>Returns the central point of an object that is a model of segment. 
 </td>
 </tr>
 <tr>
- <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment> void low(Segment& segment, const point_type& point)</td>
+ <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment, typename Point> void low(Segment& segment, const Point& point)</td>
 <td>Sets the low endpoint of an object that is a model of segment. 
 </td>
 </tr>
 <tr>
- <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment> 
-void high(Segment& segment, const point_type& point)</td>
+ <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment, typename Point> 
+void high(Segment& segment, const Point& point)</td>
 <td>Sets the high endpoint of an object that is a model of segment. 
 </td>
 </tr>
@@ -240,7 +242,7 @@
 <td style="vertical-align: top;">template <typename Segment> 
 distance_type length(const Segment& segment) 
 </td>
- <td>Returns the length of an object that is a model of segment. 
+ <td>Returns length of an object that is a model of segment. 
 </td>
 </tr>

@@ -250,14 +252,14 @@
 <tr>
 <td width="586">template
<typename Segment> Segment& scale_up(Segment& segment,     unsigned_area_type factor)</td>
- <td>Multiplies x and y coordinates of both endpoints of an object that models segment by unsigned factor.</td>
+ <td>Multiplies x and y coordinates of both endpoints of an object that is a model of segment by unsigned factor.</td>
 </tr>
 <tr>
 <td width="586">template
<typename Segment> 
 Segment& scale_down(Segment& segment, 
    unsigned_area_type factor)</td>
- <td>Divides x and y coordinates of both endpoints of an object that models segment by unsigned factor.</td>
+ <td>Divides x and y coordinates of both endpoints of an object that is a model of segment by unsigned factor.</td>
 </tr>
 <tr>
 <td width="586">template
@@ -265,16 +267,16 @@
 Segment& scale(Segment& segment, 
    const scaling_type& factor) </td>
 <td>Calls
-the scale member function of scaling type on the low and high endpoint of
-an object that models segment and updates the segment with the
-scaled points.</td>
+the scale member function of the scaling type on the low and high endpoint of
+an object that is a model of segment and updates the segment with the
+scaled endpoints.</td>
 </tr>
 <tr>
 <td width="586">template
<typename Segment, typename Transform> Segment& transform(Segment& segment, 
    const Transform& transform) </td>
 <td>Calls the transform member function of transform type
-on the low and high endpoints of an object that models segment and updates the segment with the transformed endpoints.</td>
+on the low and high endpoints of an object that is a model of segment and updates the segment with the transformed endpoints.</td>
 </tr>
 <tr>
 <td width="586">template
@@ -282,64 +284,80 @@
 Segment& move(Segment& segment, orientation_2d 
    coordinate_difference displacement)</td>
 <td>Adds displacement value to the coordinates of both endpoints of an object
-that models segment indicated by the orientation_2d.</td>
+that is a model of segment indicated by the orientation_2d.</td>
 </tr>
 <tr>
 <td width="586">template
-<Segment> 
- Segment& convolve(Segment& segment, const point_type& b)</td>
- <td>Convolves both endpoints of an object that models a segment with b. 
+<Segment, Point> 
+ Segment& convolve(Segment& segment, const Point& point)</td>
+ <td>Convolves both endpoints of an object that models a segment with an object that models a point. 
</td>
 </tr>
 <tr>
 <td width="586">template
-<Segment> 
- Segment& deconvolve(Segment& segment, const point_type& b)</td>
- <td>Deconvolves both endpoints of an object that models a segment with b. </td>
+<Segment, Point> 
+ Segment& deconvolve(Segment& segment, const Point& point)</td>
+ <td>Deconvolves both endpoints of an object that models a segment with an object that models a point. </td>
 </tr>
 <tr>
 <td width="586">template
<typename Segment, typename Point> distance_type euclidean_distance( 
    const Segment& segment, const Point& point)</td>
- <td>Returns the distance from an object that is a model of segment
+ <td>Returns distance from an object that is a model of segment
to an object that is a model of point.</td>
 </tr>
 <tr>
 <td style="vertical-align: top;">template
<typename Segment1, typename Segment2> distance_type euclidean_distance( 
    const Segment1& segment1, const Segment2& segment2)</td>
- <td style="vertical-align: middle;">Returns the distance between two objects that are models of segment.</td>
+ <td style="vertical-align: middle;">Returns distance between two objects that are models of segment.</td>
 </tr>
 <tr>
- <td style="vertical-align: top;"> 
+ <td style="vertical-align: top;">template <typename Segment1, typename Segment2> 
+ bool intersects(const Segment1& segment1, 
+                 const Segment2& segment2) 
 </td>
- <td style="vertical-align: top;"> 
+ <td>Returns true if two objects that model a segment intersect, else false. 
 </td>
 </tr>
 <tr>
- <td style="vertical-align: top;"> 
+ <td style="vertical-align: top;">template <typename Segment1, typename Segment2> 
+
+ bool boundaries_intersect( 
+    const Segment1& segment1, const Segment2& segment2)
 </td>
- <td style="vertical-align: top;"> 
+ <td>Returns true if two objects that model a segment are collinear and overlap, else false. 
 </td>
 </tr>
 <tr>
- <td style="vertical-align: top;"> 
- </td>
- <td style="vertical-align: top;"> 
+ <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment1, typename Segment2> 
+
+bool abuts(const Segment1& segment1, 
+
+    const Segment2& segment2, direction_1d dir)</td>
+ <td>Returns true if two objects that model a segment abut, depending on the direction_1d value. 
 </td>
 </tr>
- <tr>
- <td style="vertical-align: top;"> 
+<tr>
+ <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Segment1, typename Segment2> 
+bool abuts(const Segment1& segment1, 
+           const Segment2& segment2) 
 </td>
- <td style="vertical-align: top;"> 
+ <td>Returns true if two objects that model a segment abut: either the first one to the second one or vice versa. 
 </td>
 </tr>
 <tr>
- <td style="vertical-align: top;"> 
+ <td style="vertical-align: top; font-family: Courier New,Courier,monospace;">template <typename Point, typename Segment1, typename Segment2> 
+bool intersection(Point& point, 
+    const Segment1& segment1, const Segment2& segment2, 
+    bool projected = false, bool round_closest = false) 
 </td>
- <td style="vertical-align: top;"> 
+ <td>Returns
+true and computes the intersection point of the two objects that model
+a segment. If those don't intersect returns false. 
 </td>
 </tr>
+



@@ -373,7 +391,7 @@
 </tr>
<tr>
 <td width="586">segment_data()</td>
- <td>Default constructs the two endpoints of the segment.</td>
+ <td>Default constructor.</td>
 </tr>
 <tr>
 <td width="586">segment_data(point_type low, point_type high)</td>
@@ -389,87 +407,69 @@
 </tr>
 <tr>
 <td width="586">template
-<typename T2> 
- point_data& operator=(const T2& that)
+<typename Segment> 
+ segment_data& operator=(const Segment& that)
const</td>
- <td>Assign from an object that is a model of point.</td>
+ <td>Assign from an object that is a model of segment.</td>
 </tr>
 <tr>
- <td width="586">template
-<typename T2> 
- bool operator==(const T2& that) const</td>
- <td>Compare equality to an object that is a model of point.</td>
+ <td width="586">bool operator==(const segment_data& that) const</td>
+ <td>Equality operator overload.</td>
 </tr>
 <tr>
- <td width="586">template
-<typename T2> 
- bool operator!=(const T2& that) const</td>
- <td>Compare inequality to an object that is a model of
-point.</td>
+ <td width="586"> bool operator!=(const segment_data& that) const</td>
+ <td>Inequality operator overload.</td>
 </tr>
 <tr>
- <td width="586">template
-<typename T2> 
- bool operator<(const T2& that) const</td>
- <td>Compares y coordinates then x coordinates to break ties.</td>
+ <td width="586"> bool operator<(const segment_data& that) const</td>
+ <td>Less operator overload. Compares low endpoint then high endpoint to break ties. 
+</td>
 </tr>
 <tr>
- <td width="586">template
-<typename T2> 
- bool operator<=(const T2& that) const</td>
- <td>Compares y coordinates then x coordinates to break ties.</td>
+ <td width="586"> bool operator<=(const segment_data& that) const</td>
+ <td>Less or equal operator overload. Compares low endpoint then high endpoint to break ties. 
+</td>
 </tr>
 <tr>
- <td width="586">template
-<typename T2> 
- bool operator>(const T2& that) const</td>
- <td>Compares low coordinates then high coordinates to break
-ties.</td>
+ <td width="586"> bool operator>(const segment_data& that) const</td>
+ <td>Greater operator overload. Compares low endpoint then high endpoint to break ties. 
+</td>
 </tr>
 <tr>
- <td width="586">template
-<typename T2> 
- bool operator>=(const T2& that) const</td>
- <td>Compares low coordinates then high coordinates to break
-ties.</td>
+ <td width="586"> bool operator>=(const segment_data& that) const</td>
+ <td>Greater or equal operator overload. Compares low endpoint then high endpoint to break ties. 
+</td>
 </tr>
 <tr>
- <td width="586">T get(orientation_2d
-orient) const</td>
- <td>Get the coordinate in the given orientation.</td>
+ <td width="586">point_type get(direction_1d dir) const</td>
+ <td>Retrieves the low/high endpoint considering direction.</td>
 </tr>
 <tr>
- <td width="586">T x() const</td>
- <td>Get the coordinate in the horizontal orientation.</td>
+ <td width="586">point_type low() const</td>
+ <td>Retrieves the low endpoint.</td>
 </tr>
 <tr>
- <td width="586">T y() const</td>
- <td>Get the coordinate in the vertical orientation.</td>
+ <td width="586">point_type high() const</td>
+ <td>Retrieves the high endpoint.</td>
 </tr>
 <tr>
- <td width="586">void set(orientation_2d
-orient, T value)</td>
- <td>Sets the coordinate in the given orientation to the
-value.</td>
+ <td width="586">void set(direction_1d dir, const point_type& point)</td>
+ <td>Sets the endpoint in the given direction.</td>
 </tr>
 <tr>
- <td width="586">void x(T
-value)</td>
- <td>Sets the coordinate in the horizontal orientation to
-the value.</td>
+ <td width="586">segment_data& low(const point_type& point)</td>
+ <td>Sets the low endpoint.</td>
 </tr>
 <tr>
- <td width="586">void y(T
-value)</td>
- <td>Sets the coordinate in the vertical orientation to the
-value.</td>
+ <td width="586">segment_data& high(const point_type& point)</td>
+ <td>Sets the high endpoint.</td>
 </tr>
 </tbody>
 </table>
 </td>
 </tr>
 <tr>
- <td style="background-color: rgb(238, 238, 238);" valign="top" nowrap="1">  </td>
+ <td style="background-color: rgb(238, 238, 238);" nowrap="1" valign="top">  </td>
 <td style="padding-left: 10px; padding-right: 10px; padding-bottom: 10px;" valign="top" width="100%">
 <table class="docinfo" id="table3" frame="void" rules="none">
 <colgroup> <col class="docinfo-name" /><col class="docinfo-content" /> </colgroup> <tbody valign="top">

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