Release Notes

Boost 1.53

Bugfixes

avoid generating output polygons with interior rings below minimum size (e.g. one or two points)
geometry::disjoint for degenerate segments (patched by Karsten Ahnert)
problem in geometry::difference for missing handling tangency, reported by H2
fixed geometry::for_each for use with Lambda's
fixed geometry::comparable_distance point-linestring (and -range, -polygon)

Additional functionality

combinations for geometry::disjoint: point/ring, point/polygon, point/multi_polygon
combinations for geometry::intersects: point/ring, point/polygon, point/multi_polygon

Internal changes

updates in specializations/not_implemented for various algorithms (as in an earlier version, these changes are still going on; they take care for simplified structs, better error reporting, and automatized documentation)
fixes in unit tests

Boost 1.51

Breaking changes

points accessed through a pointer (e.g. in a linestring) should now be specialized without the pointer. In previous versions a type my_point used like linestring<my_point*> had to be specalized like: template<> struct tag<my_point*>. Now the library itself removes the pointer before calling the traits class, so now it should be like: template<> struct tag<my_point>

Bugfixes

intersection was sometimes wrong for integer points, fixed
documentation, order of parameters in simplify was wrong, fixed

Solved tickets

7030 spherical distance, fixed (by patch of Karsten Ahnert)

Boost 1.50

Bugfixes

the return type of comparable projected point strategy for integer points was wrong (integer), fixed
several robustness issues in intersection of segments and polygons, fixed
invalid intersection output is filtered out
disjoint for multi_polygon's might incorrectly return true, fixed

Solved tickets

6585 patch for alternative syntax multipoint, applied
6584 patch for bug in distance, applied
5730 same issue as 6584, fixed
6166 patch for missing transformation, applied
6696 invalid intersection output, was (by chance) already fixed in Trunk before reported

Additional functionality

added algorithm "touches" (OGC SF compliant) for *polygon/*polygon

Boost 1.49

Breaking changes

point_xy was accidentally included in one of the headerfiles. If the point_xy class is used, it should be included explicitly now.

Bugfixes

bugfix: distance for multi-geometries ignored specified distance strategy. Fixed
bugfix: difference for polygon/multi_polygon (reported 2011/10/24 on GGL-list)
bugfix: raise exception for calculation of distances of multi-geometrie(s) where one of them is empty
bugfix: multi DSV did not correctly use settings, fixed
bugfix: self-intersections could sometimes be missed (introduced in 1.48), fixed
bugfix: convex hull crashed on empty range (e.g. empty multi point), fixed
bugfix: area/centroid/side/intersection/distance did not work for "int" type filled with large (but not overflowing) integers. Fixed.
bugfix: disjoint/intersect did not work for degenerate linestrings. Fixed.
bugfix: covered_by did not compile for a ring. Fixed.

Solved tickets

6019 convex_hull / area, fixed.
6021 convex_hull / append (multipoint), fixed.
6028 Documentation: closure, fixed.
6178 Missing headerfile, fixed.

Additional functionality

support for line/polygon intersections and differences
support for convert of segment/box of different point types
support for append for multi point
the scalar function distance now throws an empty_input_exception on empty input

Documentation

updated support status in several algorithms
updated conformance to OGC or std
other updates and fixes

Internal changes

updates in specializations/not_implemented for distance/convert/assign/area/with/covered_by
move of wkt/dsv to io folder, making domains redundant
warnings: strategy concepts assigned to zero to avoid clang warnings (patched by Vishnu)
warnings: there were several unused parameters, for which gcc/clang warned (patched by Christophe)

Boost 1.48

Bugfixes

Robustness issue, in some circumstances the union failed to output. Fixed.
Robustness issue, in some circumstances the calculated intersection point was outside the segment. Fixed.
Concept issue, cartesian intersect didn't understand segments other than the provided one. Fixed.
Sometimes self-intersections in linestrings were missed. Fixed.
The fusion coordinate system was not registered correctly. Fixed.

Solved tickets

5726 Segment intersection algorithm still assumes 'first', 'second' members
5744 Mistake in fusion adapt example
5748 Needed to include <boost/foreach.hpp>
5954 distance_pythagoras skips sqrt() step

Improvements on algorithms

Checking self-intersections is now not done automatically, this can blast performance.
Besides that, checking self-intersections is made faster.
Intersections now avoid outputting duplicate points. So they output the minimal set.

Additional algorithms

covered_by: within is defined as "within, not on boundary". covered_by is "within or on boundary"

Additional functionality

within: strategies can now be specified for within<point, box> and within<box, box>
convert: a much broader range of conversions is supported
assign: idem, (currently partly) synonym for convert (but reversed arguments)

Additional coordinate types

Basic (limited) support for Boost.Rational

Boost 1.47

Original release