org.jcae.mesh
Class Mesher

java.lang.Object
  org.jcae.mesh.Mesher

public class Mesher
extends java.lang.Object

Main class to mesh a surface. This Mesher class takes as input a file name containing the CAD surface, mesh hypothesis (length and deflection), computes a mesh according to these hypothesis and store it onto disk. This class allows to set all explicit constraints desired by the user, and to set all implicit constraints linked to mesher requirement. The main idea of mesh generation is to sub-structure the mesh linked to the geometric shape into several sub-meshes according to specifications and geometry decomposition (see mesh.MeshMesh.initMesh()).

Field Summary

protected double	deflection meshing constraint: deflection
protected double	edgeLength meshing constraint: edge length
protected java.lang.String	geometryFile The geometry file to be meshed
protected java.lang.String	outputDir The output directory
protected CADShape	shape CAD shape
protected java.lang.String	unvName The file where to export the mesh in UNV format

Constructor Summary

Mesher()

Method Summary

protected void	exportMesh() Export the created mesh to various format
static void	main(java.lang.String[] args) main method, reads arguments and calls mesh() method
protected TIntArrayList	mesh() Run the mesh
protected MMesh1D	mesh1D(java.lang.String brepFile) Compute 1D mesh
protected boolean	mesh2D(int iFace, CADFace face, MMesh1D mesh1D, MeshParameters mp, java.lang.String brepFile, MeshTraitsBuilder mtb) Read the 1D mesh and compute 2D meshes
protected void	mesh3D(java.lang.String brepFile) Read 2D meshes and compute 3D mesh
protected void	parseCommandLine(java.lang.String[] args)
protected void	readProperties() Read system properties which affect the meshing behavior.
protected void	report(TIntArrayList badGroups, java.lang.String startDate) Create a report to the file specified by the org.jcae.mesh.Mesher.reportFile system property.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

edgeLength

protected double edgeLength

meshing constraint: edge length

deflection

protected double deflection

meshing constraint: deflection

geometryFile

protected java.lang.String geometryFile

The geometry file to be meshed

shape

protected CADShape shape

CAD shape

unvName

protected java.lang.String unvName

The file where to export the mesh in UNV format

outputDir

protected java.lang.String outputDir

The output directory

Constructor Detail

Mesher

public Mesher()

Method Detail

readProperties

protected void readProperties()

Read system properties which affect the meshing behavior. See package level javadoc for more information.

mesh1D

protected MMesh1D mesh1D(java.lang.String brepFile)

Compute 1D mesh

Parameters:

brepFile - basename of the BRep file

mesh2D

protected boolean mesh2D(int iFace,
                         CADFace face,
                         MMesh1D mesh1D,
                         MeshParameters mp,
                         java.lang.String brepFile,
                         MeshTraitsBuilder mtb)

Read the 1D mesh and compute 2D meshes

Parameters:

iFace - the id of the face to be meshed

face - topological face

mesh1D - the boundary mesh used to create this 2D mesh

brepFile - basename of the BRep file

mtb - container for 2D mesh traits

Returns:

true if face had been successfully meshed, false otherwise.

exportMesh

protected void exportMesh()

Export the created mesh to various format

mesh3D

protected void mesh3D(java.lang.String brepFile)

Read 2D meshes and compute 3D mesh

Parameters:

brepFile -

mesh

protected TIntArrayList mesh()

Run the mesh

Returns:

the list of face id on which the mesher failed

report

protected void report(TIntArrayList badGroups,
                      java.lang.String startDate)

Create a report to the file specified by the org.jcae.mesh.Mesher.reportFile system property.

Parameters:

badGroups - The list of face id which failed

startDate - The date when the mesher was started

parseCommandLine

protected void parseCommandLine(java.lang.String[] args)
                         throws java.io.IOException

Parameters:

args - The main function argument

Throws:

java.io.IOException - If the creation of the output directory failed

main

public static void main(java.lang.String[] args)

main method, reads arguments and calls mesh() method

Parameters:

args - an array of String, filename, algorithm type and constraint value