Geometry package: Difference between revisions
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As you can see the polygon has lots of points. We need to simplify the polygon in order to obtain a mesh of reasonable size. Otherwise gmsh will have problems meshing and the result could be huge (or a segmentation fault :( ). The package geometry (> 1.5.0) comes with a simplification function that uses the [http://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm Ramer-Douglas-Peucker algorithm] to reduce thenumber of points in the polygon. | As you can see the polygon has lots of points. We need to simplify the polygon in order to obtain a mesh of reasonable size. Otherwise gmsh will have problems meshing and the result could be huge (or a segmentation fault :( ). The package geometry (> 1.5.0) comes with a simplification function that uses the [http://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm Ramer-Douglas-Peucker algorithm] to reduce thenumber of points in the polygon. | ||
{{Code|Symplification of a polygon compatible with geometry package|<syntaxhighlight lang="matlab" style="font-size:13px"> | {{Code|Symplification of a polygon compatible with geometry package|<syntaxhighlight lang="matlab" style="font-size:13px"> | ||
P = | P = simplifypolygon(P, 'tol', 1e-3); | ||
</syntaxhighlight>}} | </syntaxhighlight>}} | ||
You should play with the tolerance option until you get a nice polygon. | You should play with the tolerance option until you get a nice polygon. | ||