package mesh-easymesh

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mesh-easymesh
- Mesh_easymesh
  - pslg

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OCaml interface to EasyMesh.

EasyMesh is a simple and easy to use mesh generator. However, it is not very robust and can segfault instead of reporting an error.

author Christophe Troestler (Christophe.Troestler\@umons.ac.be)

class 'l pslg : 'l Bigarray.layout -> 'l Mesh.pslg

An alias for Mesh.pslg. (Use this if you wan to ba able to easily switch mesh generators as some may require objects with more methods.)

val pslg : 
  ?hole:'l Mesh.mat ->
  ?region:'l Mesh.mat ->
  ?point_marker:'l Mesh.int_vec ->
  'l Mesh.mat ->
  ?segment_marker:'l Mesh.int_vec ->
  'l Mesh.int_mat ->
  'l pslg

Same as Mesh.pslg. Duplicated here to ease the writing of code that is easily ported to various meshers.

val triangulate : max_area:float -> 'layout Mesh.pslg -> 'layout Mesh.t

triangulate ~max_area pslg returns a triangulation of the Planar Straight Line Graph pslg given by pslg.Mesh.points and pslg.Mesh.segment. BEWARE that for EasyMesh, the boundary must have a positive (counterclockwise) orientation, holes must be delimited by a negatively oriented paths.

pslg.Mesh.points_marker and pslg.Mesh.segment_marker may be set.

The returned mesh sets point, point_marker, triangle, neighbor and should genrally set edge and edge_marker.

parameter max_area
is given as an indication to the algorithm and may not be respected.

val read : 'layout Bigarray.layout -> string -> 'layout Mesh.t

read layout file reads the mesh described by the files file.n, file.e and file.s into a Mesh.t structure. Only the fact that the files are well formed is checked (various exceptions may be thrown), not the fact that the data describe a real mesh.

val write : 'layout Mesh.t -> string -> unit

write mesh file writes the mesh in the files file.n, file.e and file.s in easymesh format.