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0021397: EDF SMESH: a quadrangle face mesh can't be projected to a cylinder

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eap 2012-12-28 16:24:50 +00:00
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doc/salome/gui/SMESH/input/projection_algos.doc
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@ -16,44 +16,51 @@ The following dialog box will appear:
\image html projection_1d.png
In this menu you can define the \b Name of the algorithm, the already
meshed source \b Edge and the \b Mesh (It can be omitted only when
projecting a submesh on another one from the same global Mesh).
It could also be necessary to define the orientation of edges,
which is done by indicating the <b>Source Vertex</b> being the first point
of the Source Edge and the <b>Target Vertex</b> being the first point of
the created \b Edge.
In this dialog you can define
<ul>
<li> the \b Name of the algorithm,</li>
<li> the already meshed <b> Source Edge</b> and </li>
<li> the <b>Source Mesh </b> (It can be omitted only when projecting
a sub-mesh on another one of the same Mesh).</li>
<li> It could also be necessary to define the orientation of edges,
which is done by indicating the <b>Source Vertex</b> being the
first point of the <b>Source Edge </b>and the <b>Target Vertex</b> being
the first point of the edge being meshed.</li>
</ul>
<br>
For a group of edges, <b>Source</b> and <b>Target</b> vertices should be
shared by one edge of the group. If <b>Source</b> and <b>Target</b>
vertices are specified, the elements of the group must be adjacent.
shared by only one edge of the group. If <b>Source</b> and <b>Target</b>
vertices are specified, the edges in the group must be connected.
The source and target groups must contain equal number of edges
and they must form topologically equal structures.
\n <b>Projection 2D</b> algorithm allows to define the mesh of a face
(or group of faces) by the
projection of another already meshed face (or group of faces). This
algorithm works only
if all edges of the target face have been meshed as 1D Projections of
the edges of the source face.
(or group of faces) by the projection of another already meshed face
(or group of faces). This algorithm works only if all edges of the
target face have been discretized into the same number of
segments as corresponding edges of the source face.
To apply this algorithm select the face to be meshed (indicated in the
field \b Geometry of <b>Create mesh</b> dialog box), <b>Projection
2D</b> in the list
of 2D algorithms and click the <em>"Add Hypothesis"</em> button. The
following dialog box will appear:
2D</b> in the list of 2D algorithms and click the <em> "Add
Hypothesis"</em> button. The following dialog box will appear:
\image html projection_2d.png
In this menu you can define the \b Name of the algorithm, the already
meshed source \b Face and the \b Mesh (It can be omitted only when
projecting a submesh on another one from the same global Mesh).
It could also be necessary to define the orientation of mesh on the
face, which is done by indicating two <b>Source Vertices</b>, which
belong to the same edge of the source face, and two <b>Target
Vertices</b>, which belong to the same edge of the created \b Face.
For groups of face, they must contain equal number of faces
and they must form topologically equal structures.
In this dialog you can define
<ul>
<li> the \b Name of the algorithm, </li>
<li> the already meshed <b> Source Face </b> and </li>
<li> the <b> Source Mesh </b> (It can be omitted only when
projecting a submesh on another one of the same Mesh). </li>
<li> It could also be necessary to define the orientation of mesh on
the face, which is done by indicating two <b>Source Vertices</b>,
which belong to the same edge of the <b>Source Face</b>, and
two <b>Target Vertices</b>, which belong to the same edge of the
face being meshed.</li>
</ul>
For groups of face, the groups must contain equal number of faces and
they must form topologically equal structures.
\n <b>Projection 1D-2D</b> algorithm differs from <b>Projection 2D</b>
algorithm in one aspect: it generates mesh segments on edges of