X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2F1d_meshing_hypo.doc;h=c4de6317c9d1dd4d24a0d115ad88d69ebb060b61;hb=204a3246f4d94d4375bdac7391bec2b3ab49e0d9;hp=336ca5ddd8baad2cca71762f6ae7e765f432e016;hpb=6ae3c2c26f6e42a48246e314ab92c36656f7c667;p=modules%2Fsmesh.git diff --git a/doc/salome/gui/SMESH/input/1d_meshing_hypo.doc b/doc/salome/gui/SMESH/input/1d_meshing_hypo.doc index 336ca5ddd..c4de6317c 100644 --- a/doc/salome/gui/SMESH/input/1d_meshing_hypo.doc +++ b/doc/salome/gui/SMESH/input/1d_meshing_hypo.doc @@ -14,25 +14,25 @@ Basic 1D hypothesis specifies:
  • Constantly increasing or decreasing length of segments:
  • Distribution depending on curvature:
  • Arbitrary distribution:
    • @@ -54,15 +54,15 @@ creation of narrow 2D elements. - Max size parameter defines the length of segments on straight edges. - \b Deflection parameter gives maximal distance of a segment from a curved edge. -\image html adaptive1d_sample_mesh.png "Adaptive hypothesis and Netgen 2D algorithm - the size of mesh segments reflects the size of geometrical features" +\image html adaptive1d_sample_mesh.png "Adaptive hypothesis and NETGEN 2D algorithm - the size of mesh segments reflects the size of geometrical features" See Also a \ref tui_1d_adaptive "sample TUI Script" that uses Adaptive hypothesis.
    \anchor arithmetic_1d_anchor -

    Arithmetic 1D hypothesis

    +

    Arithmetic Progression hypothesis

    -Arithmetic 1D hypothesis allows to split edges into segments with a +Arithmetic Progression hypothesis allows to split edges into segments with a length that changes in arithmetic progression (Lk = Lk-1 + d) beginning from a given starting length and up to a given end length. @@ -82,10 +82,10 @@ defining Reversed Edges parameter. \image html a-arithmetic1d.png -\image html b-ithmetic1d.png "Arithmetic 1D hypothesis - the size of mesh elements gradually increases" +\image html b-ithmetic1d.png "Arithmetic Progression hypothesis - the size of mesh elements gradually increases" See Also a sample TUI Script of a -\ref tui_1d_arithmetic "Defining Arithmetic 1D and Geometric Progression hypothesis" operation. +\ref tui_1d_arithmetic "Defining Arithmetic Progression and Geometric Progression hypothesis" operation.
    \anchor geometric_1d_anchor @@ -112,13 +112,13 @@ defining Reversed Edges parameter. \image html a-geometric1d.png See Also a sample TUI Script of a -\ref tui_1d_arithmetic "Defining Arithmetic 1D and Geometric Progression hypothesis" operation. +\ref tui_1d_arithmetic "Defining Arithmetic Progression and Geometric Progression hypothesis" operation.
    \anchor deflection_1d_anchor -

    Deflection 1D hypothesis

    +

    Deflection hypothesis

    -Deflection 1D hypothesis can be applied for meshing curvilinear edges +Deflection hypothesis can be applied for meshing curvilinear edges composing your geometrical object. It defines only one parameter: the value of deflection (or chord error). @@ -130,10 +130,10 @@ two nodes should not exceed the value of deflection. \image html a-deflection1d.png -\image html b-flection1d.png "Deflection 1D hypothesis - useful for meshing curvilinear edges" +\image html b-flection1d.png "Deflection hypothesis - useful for meshing curvilinear edges" See Also a sample TUI Script of a -\ref tui_deflection_1d "Defining Deflection 1D hypothesis" operation. +\ref tui_deflection_1d "Defining Deflection hypothesis" operation.
    \anchor average_length_anchor @@ -144,12 +144,17 @@ composing your geometrical object. Definition of this hypothesis consists of setting the \b length of segments, which will approximate these edges, and the \b precision of rounding. -The \b precision parameter is used to round a number of segments, -calculated by dividing the edge length by the specified \b length of -segment, to the higher integer if the remainder exceeds the precision -and to the lower integer otherwise. Use value 0.5 to provide rounding -to the nearest integer, 1.0 for the lower integer, 0.0 for the higher -integer. Default value is 1e-07. +The \b precision parameter is used to round a number of segments, +calculated by dividing the edge length by the specified \b length of +segment, to the higher integer if the \a remainder exceeds the \b precision +and to the lower integer otherwise.
    +Use value 0.5 to provide rounding to the nearest integer, 1.0 for the lower integer, 0.0 for the higher integer. Default value is 1e-07. + +For example: if edge length is 10.0 and the segment \b length +is 3.0 then their division gives 10./3. = 3.33(3) and the \a remainder is 0.33(3). +If \b precision is less than 0.33(3) then the edge is divided into 3 segments. +If \b precision is more than 0.33(3) then the edge is divided into 4 segments. + \image html image41.gif @@ -169,7 +174,7 @@ consists of setting the maximal allowed \b length of segments. Use preestimated length check box lets you use \b length automatically calculated basing on size of your geometrical object, namely as diagonal of bounding box divided by ten. The divider can be -changed via "Ratio Bounding Box Diagonal / Max Size" +changed via \ref diagonal_size_ratio_pref "Ratio Bounding Box Diagonal / Max Size" preference parameter. Use preestimated length check box is enabled only if the geometrical object has been selected before hypothesis definition. @@ -178,11 +183,14 @@ geometrical object has been selected before hypothesis definition.
    \anchor number_of_segments_anchor -

    Number of segments hypothesis

    +

    Number of Segments hypothesis

    -Number of segments hypothesis can be applied for approximating +Number of Segments hypothesis can be applied for approximating edges by a definite number of mesh segments with length depending on -the selected type of distribution of nodes. +the selected type of distribution of nodes. The default number of +segments can be set via +\ref nb_segments_pref "Automatic Parameters / Default Number of Segments" +preference parameter. The direction of the splitting is defined by the orientation of the underlying geometrical edge. Reverse Edges list box allows to @@ -236,7 +244,7 @@ in the plot the density function curve in red and the node distribution as blue crosses. The node distribution is computed in the same way as for \ref analyticdensity_anchor "Distribution with Analytic Density". You -can select the Conversion mode from\b Exponent and Cut +can select the Conversion mode from \b Exponent and Cut negative. \image html distributionwithtabledensity.png @@ -245,7 +253,7 @@ negative. \ref tui_deflection_1d "Defining Number of Segments" hypothesis operation. -\note The plot functionality is available only if GUI module is builded with Plot 2D Viewer (set option SALOME_USE_PLOT2DVIEWER to ON when building GUI module). +\note The plot functionality is available only if GUI module is built with Plot 2D Viewer (option SALOME_USE_PLOT2DVIEWER is ON when building GUI module).
    \anchor start_and_end_length_anchor @@ -297,9 +305,9 @@ minimum and maximum value of this parameter.
    \anchor fixed_points_1d_anchor -

    Fixed points 1D hypothesis

    +

    Fixed Points hypothesis

    -Fixed points 1D hypothesis allows splitting edges through a +Fixed Points hypothesis allows splitting edges through a set of points parametrized on the edge (from 1 to 0) and a number of segments for each interval limited by the points. @@ -321,7 +329,7 @@ Object Browser. defining Reversed Edges parameter. -\image html mesh_fixedpnt.png "Example of a sub-mesh on the edge built using Fixed points 1D hypothesis" +\image html mesh_fixedpnt.png "Example of a sub-mesh on the edge built using Fixed Points hypothesis" See Also a sample TUI Script of a \ref tui_fixed_points "Defining Fixed Points" hypothesis operation. @@ -339,16 +347,24 @@ geometrical model in the 3D Viewer, which can help to understand the location of a set of edges within the model. Propagation chains group allows defining Reversed Edges -for splitting opposite edges of quadrilateral faces -in a logically uniform direction. When this group is -activated, the list is filled with propagation chains found within the -model. When a chain is selected in the list its edges are -shown in the Viewer with arrows, which enables choosing a common -direction for all chain edges. \b Reverse button inverts the common -direction of chain edges. If \b Add button is active, some -edges of a chain have a different direction, so you can click \b Add -button to add them to Reversed Edges list. +for splitting opposite edges of quadrilateral faces in a logically +uniform direction. When this group is activated, the list is filled +with propagation chains found within the shape on which a hypothesis +is assigned. When a chain is selected in the list its edges are shown +in the Viewer with arrows, which enables choosing a common direction +for all chain edges. \b Reverse button inverts the common direction of +chain edges. \b Add button is active if some edges of a chain have a +different direction, so you can click \b Add button to add them +to Reversed Edges list. \image html propagation_chain.png "The whole geometry and a propagation chain" +\note Alternatively, uniform direction of edges of one propagation +chain can be achieved by +\ref constructing_submeshes_page "definition of a sub-mesh" on one +edge of the chain and assigning a +\ref propagation_anchor "Propagation" additional hypothesis. +Orientation of this edge (and hence of all the rest edges of the chain) can be +controlled by using Reversed Edges field. + */