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Re: [cgal-discuss] OBB aka Minimal Enclosing Rectangle seems wrong (CGAL-4.9_x64-beta1)


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  • From: Mike Vasiljevs <>
  • To:
  • Subject: Re: [cgal-discuss] OBB aka Minimal Enclosing Rectangle seems wrong (CGAL-4.9_x64-beta1)
  • Date: Mon, 5 Sep 2016 12:14:53 +0100
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Hi Sebastien,

The code is available at GitHub: https://github.com/sonicth/SUMB_ShapeFitting/blob/master/src/cgal/cgal-bbox.cpp. Pts_t is defined in https://github.com/sonicth/SUMB_ShapeFitting/blob/master/src/shared/shared-geometry.h, which simply a vector of GLM 2D vertices (or glm::dvec2). The input can be generated in SketchUp, for example by drawing Hexagon polygons and using them as input. Correctness of the input was checked by feeding it to the output - which both input and output polygons were identical.

Greets,
Mike


On 5 Sep 2016, at 11:37, Sebastien Loriot (GeometryFactory) <> wrote:

On 09/04/2016 02:05 PM, Mike Vasiljevs wrote:
Running an adapted Bounding Volumes example
(https://github.com/CGAL/cgal/blob/releases/CGAL-4.9-beta1/Bounding_volumes/examples/Min_quadrilateral_2/minimum_enclosing_rectangle_2.cpp)
resulted in an incorrect Oriented Bounding Box output for most cases.
Input polygons were SketchUp created circles, hexagons and custom-drawn
polygons.

Results:
http://www.michaelvasiljevs.com/pictures/issues/cgal-min_rectangle-circles_n_hexes.png
http://www.michaelvasiljevs.com/pictures/issues/cgal-min_rectangle-multipoints.png

Any ideas?


Greetings,
Mike

Could you share a minimal example (code+input) showing the pb?

Thanks,

Sebastien.

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