- Added simple code for operator<<() for Ray_[23] and Line_[23].

Packages/Geomview/TODO

@@ -4,10 +4,12 @@
   It's still probably a bug in Geomview.
 - The remote geomview (with rsh) facility probably doesn't work.
   But is it useful ?
-- What to do for Circle_2 ?  Maybe there's some code somewhere, or ask the
-  geomview list.  Or do the discretisation ourselves, maybe it's the kernel's
-  job ?  Discretisation for Sphere and Circle should be configurable for the
-  stream.
+- Missing operators (for 2d and 3d Voronoi diagrams) :
+  - Ray_[23], Line_[23] : an easy one is already there, but to do it
+    perfectly, we should draw the segment resulting from the intersection of
+    the object with the BBox.
+  - Circle_2
+- Discretisation for Sphere and Circle should be configurable for the stream.
 - Is there a way to see edges like cylinders somewhat (possibly generate them
   ourselves), so that we know which one is in front of which other one ?
 - For T3D : I want to be able to tell Geomview or the CGAL program to stop
@@ -32,7 +34,6 @@ Color:
 Demo :
 ------
 - Add demo files for polyhedrons ?
-- Bernd is asking to see minimum enclosing spheres.
 
 Doc:
 ---

Packages/Geomview/changes.txt

@@ -1,5 +1,8 @@
 CHANGES to the Geomview package.
 
+Ver 3.8 (23 January 2001)
+- Added (simple) operator<<() for Ray_[23] and Line_[23].
+
 Ver 3.7 (7 December 2000)
 - Added a member function get_new_id(string) to replace and generalize the
   per type counters used to get unique identifiers for geomview.

Packages/Geomview/include/CGAL/IO/Geomview_stream.h

@@ -1,6 +1,6 @@
 // ============================================================================
 //
-// Copyright (c) 1997,1998,1999,2000 The CGAL Consortium
+// Copyright (c) 1997,1998,1999,2000,2001 The CGAL Consortium
 //
 // This software and related documentation is part of an INTERNAL release
 // of the Computational Geometry Algorithms Library (CGAL). It is not
@@ -396,6 +396,61 @@ operator<<(Geomview_stream &gv, const Sphere_3<R> &S)
 }
 #endif
 
+// Ray and Line drawing should be done by intersecting them with the BBox
+// of the Geomview_stream.  But for now we take the easy approach.
+
+#if defined CGAL_RAY_2_H && \
+   !defined CGAL_GV_OUT_RAY_2_H
+#define CGAL_GV_OUT_RAY_2_H
+template < class R >
+Geomview_stream&
+operator<<(Geomview_stream &gv, const Ray_2<R> &r)
+{
+    typename R::Segment_2 s(r.source(), r.point(1));
+    gv << s;
+    return gv;
+}
+#endif
+
+#if defined CGAL_RAY_3_H && \
+   !defined CGAL_GV_OUT_RAY_3_H
+#define CGAL_GV_OUT_RAY_3_H
+template < class R >
+Geomview_stream&
+operator<<(Geomview_stream &gv, const Ray_3<R> &r)
+{
+    typename R::Segment_3 s(r.source(), r.point(1));
+    gv << s;
+    return gv;
+}
+#endif
+
+#if defined CGAL_LINE_2_H && \
+   !defined CGAL_GV_OUT_LINE_2_H
+#define CGAL_GV_OUT_LINE_2_H
+template < class R >
+Geomview_stream&
+operator<<(Geomview_stream &gv, const Line_2<R> &r)
+{
+    typename R::Segment_2 s(r.point(-1), r.point(1));
+    gv << s;
+    return gv;
+}
+#endif
+
+#if defined CGAL_LINE_3_H && \
+   !defined CGAL_GV_OUT_LINE_3_H
+#define CGAL_GV_OUT_LINE_3_H
+template < class R >
+Geomview_stream&
+operator<<(Geomview_stream &gv, const Line_3<R> &r)
+{
+    typename R::Segment_3 s(r.point(-1), r.point(1));
+    gv << s;
+    return gv;
+}
+#endif
+
 Geomview_stream&
 operator<<(Geomview_stream &gv, const Bbox_2 &bbox);