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PreCAD doc + minor fixes

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gdd 2011-08-23 09:05:56 +00:00
parent 0fdb0ecc07
commit b497bf31b3
4 changed files with 74 additions and 27 deletions
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1
doc/salome/gui/SMESH/doxyfile.in
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@ -67,6 +67,7 @@ SORT_GROUP_NAMES = NO
#LaTeX related option
#---------------------------------------------------------------------------
GENERATE_LATEX = NO
EXTRA_PACKAGES = amsmath
#---------------------------------------------------------------------------
#RTF related options

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doc/salome/gui/SMESH/images/blsurf_parameters_advanced.png
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doc/salome/gui/SMESH/input/blsurf_hypo.doc
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@ -58,8 +58,14 @@ hyper-face.</li>
<h1>Advanced parameters</h1>
The notion of <i>diag</i> used in the descriptions means the diagonal of the bounding box of the
geometrical object to mesh.
\image html blsurf_parameters_advanced.png
<li><b>Verbosity level</b> - Defines the percentage of "verbosity" of
BLSURF [0-100].</li>
<li><b>Topology</b> - allows creation of a conform mesh on a shell of
not sewed faces.
<ul>
@ -76,38 +82,50 @@ not sewed faces.
enhancement for mesh generation.</li>
</ul>
This module requires a specific licence.
\n
The following PreCAD options are the most significant and important ones:
<ul>
<li><b>Merge Edges</b> - allows PreCAD to optimize the geometry by merging some
edges. Default is 0.</li>
<li><b>Remove nano edges</b> - allows PreCAD to optimize the geometry by removing
the nano edges whenever possible. Default is 0.</li>
<li><b>Nano edge length</b> - gives the length below which an edge is considered as nano
for the topology processing. See also the \b remove_nano_edges option. If unset, PreCAD
default value is \f$\mathrm{diag} \times 10^{-5}\f$.</li>
<li><b>Discard input topology</b> - computes the CAD topology from scratch,
without considering the toplogical information contained in the original CAD
(Useful for iges files). Default is 0.</li>
</ul>
</li>
</ul>
<li><b>Verbosity level</b> - Defines the percentage of "verbosity" of
BLSURF [0-100].</li>
<li><b>ExportGMF</b> - saves the computed mesh into a GMF file (.mesh or .meshb).</li>
<li><b>Add option</b> - provides the choice of multiple advanced
options, which appear, if selected, in a table where it is possible to
input the value of the option and to edit it later.</li>
<li><b>Add option</b> - provides the choice of multiple PreCAD and BLSURF
advanced options, which appear, if selected, in a table where it is
possible to input the value of the option and to edit it later. The PreCAD
options are prefixed with "PRECAD_".</li>
<li><b>Clear option</b> - removes the option selected in the table.
<li><b>Clear option</b> - removes the option selected in the table.</li>
</ul>
\n
The following options are commonly usable. The notion of <i>diag</i>
used in the descriptions means
the diagonal of the bounding box of the geometrical object to mesh.
The following BLSURF options are commonly usable.
<ul>
<li><b>topo_eps1</b> (real) - is the tolerance level inside a CAD
patch. By default is equal to <i>diag</i> <20> 10-4. This tolerance is used to
<li>\b topo_eps1 (real) - is the tolerance level inside a CAD
patch. By default is equal to \f$\mathrm{diag} \times 10^{-4}\f$. This tolerance is used to
identify nodes to merge within one geometrical face when \b Topology
option is to pre-process. Default is <i>diag</i>/10.0.</li>
option is to pre-process.</li>
<li><b>topo_eps2</b> (real) - is the tolerance level between two CAD
patches. By default is equal to <i>diag</i> <20> 10-4. This tolerance is used to
<li>\b topo_eps2 (real) - is the tolerance level between two CAD
patches. By default is equal to \f$\mathrm{diag} \times 10^{-4}\f$. This tolerance is used to
identify nodes to merge over different geometrical faces when
\b Topology option is to pre-process. Default is <i>diag</i>/10.0.</li>
\b Topology option is to pre-process.</li>
<li>\b LSS (real) - is an abbreviation for "length of sub-segment". It is
a maximal allowed length of a mesh edge. Default is 0.5.</li>
a maximal allowed length of a mesh edge. Default is \f$0.5\f$.</li>
<li>\b frontal (integer)
<ul>
@ -122,12 +140,11 @@ Default is 0.</li>
interpolated value <i>v</i> between two points <i>P1</i> and <i>P2</i> on a
curve. Let <i>h1</i> be the value at point <i>P1,</i> <i>h2</i> be the value at point
<i>P2,</i> and <i>t</i> be a parameter varying from 0 to 1 when moving from <i>P1
to</i> <i>P2</i> .
to</i> <i>P2</i>.
<ul>
<li>0 - the interpolation is linear: <i>v = h1 + t (h2 - h1 )</i></li>
<li>1 - the interpolation is geometric: <i>v = h1 * pow( h2/h1, t)</i></li>
<li>2 - the interpolation is sinusoidal: <i>v = (h1+h2)/2 +
(h1-h2)/2*cos(PI*t)</i></li>
<li>0 - the interpolation is linear: \f$v = h1 + t (h2 - h1 )\f$</li>
<li>1 - the interpolation is geometric: \f$v = h1 \times \left( \frac{h1}{h2} \right)^{t}\f$</li>
<li>2 - the interpolation is sinusoidal: \f$v = \frac{h1+h2}{2} + \frac{h1-h2}{2 \cdot \cos(\pi \cdot t)}\f$</li>
</ul>
Default is 0.</li>
@ -135,7 +152,7 @@ Default is 0.</li>
<li>\b hmean_flag (integer) - determines the computation of the average of several
values:<ul>
<li>-1 - the minimum is computed.</li>
<li>0 or 2 - the arithmetic average computed.
<li>0 or 2 - the arithmetic average is computed.
<li>1 - the geometric average is computed.</li>
</ul>
Default is 0.</li>
@ -159,8 +176,8 @@ split into 20 edges. Default is 0.0.</li>
<li>\b eps_ends (real) - is used to detect the curves whose lengths are very
small, which sometimes constitutes an error. A message is printed
if<i> fabs(P2-P1) < eps_ends</i>, where <i>P1</i> and <i>P2</i> are the
extremities of a curve. Default is <i>diag</i>/500.0.</li>
if \f$\left|P2-P1\right| < eps\_ends\f$, where <i>P1</i> and <i>P2</i> are the
extremities of a curve. Default is \f$\frac{\mathrm{diag}}{500.0}\f$.</li>
<li>\b prefix (char) - is a prefix of the files generated by
BLSURF. Default is "x".</li>
@ -169,6 +186,35 @@ BLSURF. Default is "x".</li>
files. Default is 1.</li>
</ul>
\n
The following PreCAD options are commonly usable.
<ul>
<li>\b closed_geometry (int) - describes whether the working geometry
should be closed or not. When activated, this option helps PreCAD to treat
the most dirtiest geometries. Default is 0.</li>
<li>\b debug (int) - If debug = 1 PreCAD will be very verbose and will output
some intermediate files in the working directory. Default is 0.</li>
<li>\b eps_nano_relative (real) - Same as \b eps_nano but given in relatively to
the diagonal of the box bounding the geometry. Default is \f$10^{-5}\f$.</li>
<li>\b eps_sewing (real) - tolerance of the assembly. It rarely requires to be tuned.
Default is \f$\mathrm{diag} \times 5 \cdot 10^{-4}\f$.</li>
<li>\b eps_sewing_relative (real) - Same as \b eps_nano but given in relatively to
the diagonal of the box bounding the geometry. Default is \f$5 \cdot 10^{-4}\f$.</li>
<li>\b manifold_geometry (int) - describes whether the working geometry should be manifold or not.
When activated, this option helps PreCAD to treat the most dirtiest geometries. Default is 0.</li>
<li>\b create_tag_collision (int) - creates some new tags from original ones in case
of collision (entity merge or association for example). Default is 0.</li>
<li>\b periodic_tolerance (real) - defines the maximum distance error accepted between
two sets of periodic entities. Default is \f$\mathrm{diag} \times 10^{-5}\f$.</li>
<li>\b periodic_tolerance_relative (real) - Same as \b periodic_tolerance but in relative
unit. Default is \f$10^{-5}\f$.</li>
<li>\b periodic_split_tolerance (real) - This periodicity processing related option defines
the minimum distance between a CAD point and an imprinted point. It allows to indirectly
control the number of points and small edges created. Default is \f$\mathrm{diag} \times 10^{-4}\f$.</li>
<li>\b periodic_split_tolerance_relative (real - Same as \b periodic_split_tolerance but in
relative unit. Default is \f$10^{-4}\f$.</li>
</ul>
\n
The following advanced options are not documented and you can use them
at your own risk.
@ -300,7 +346,8 @@ where such a hypothesis has been defined.
\anchor blsurf_attractor_computation
<h2>Computation of attractors</h2>
\n
The size grows exponentially following the equation : h(d) = User size + (h_start - User Size) * exp( -(d / R)^2 ).
The size grows exponentially following the equation :
\f$h(d) = \mathrm{User Size} + (\mathrm{h\_start} - \mathrm{User Size}) \times e ^ { - \left( \frac{d}{R} \right) ^ {2} }\f$
\n
Where :
<ul>

3
doc/salome/gui/SMESH/input/cut_mesh_by_plane.doc
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@ -47,10 +47,9 @@ SMESH installation in subdirectory bin/salome/meshcut_plugin.py.
if not, copied as ${HOME}/Plugins/smesh_plugins.py or ${APPLI}/Plugins/smesh_plugins.py
or in ${PLUGINPATH} Directory.
<li>From the Mesh menu, sub-menu SMESH_plugins, choose "MeshCut" item
From the Mesh menu, sub-menu SMESH_plugins, choose "MeshCut" item
The following dialog box will appear:
\image html meshcut_plugin.png "MeshCut Plugin dialog box"
</li>
See above for the meaning of the parameters.
*/