YamsPlugDialog
0
0
927
700
Yams : Remeshing tool
false
-
-
Compute
-
Close
-
Qt::Horizontal
QSizePolicy::Minimum
60
20
-
Save Params
-
Load Params
-
Default Params
-
Qt::Horizontal
338
25
-
10
Help
-
10
0
Simple Remeshing Options
20
190
871
311
Optimisation
20
30
611
261
17
25
585
23
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:9pt; font-weight:400; font-style:normal;">
<table style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">Quality improvement</span> is done by point smoothing and edge swapping</p></td></tr></table></body></html>
Quality improvement Only (0)
true
17
54
585
23
the given surface triangulation is enriched (no coarsening at all) in such away that the distance
between the elements in the final mesh and those of the initial one is bounded by auser specified tolerance value.
One should use this option, to enrich the mesh where purely
geometrical features may be insuficiently fine, i.e. the resulting mesh will be least as fine as the input.
Mesh and the geometric features will be refined if needed as specified by the other program parameters.
The meshes obtained with those settings may not be suitable for computation.
Pure Geometry Enrichment (G)
false
17
83
585
23
a uniform subdivision of the given surface triangulation is performed :
each triangle of the given surface triangulation is considered at and
is divided into identical triangles.
Uniform Subdivision(U)
false
17
112
585
23
a surface sandpapering without shrinkage of the given surface
triangulation is performed, i.e., the high curvature variations of the
given surface will be smoothed out without shrinking the volume in
doing so. If ridges are defined, they will be kept as they are in the
resulting mesh.
This option modifies the goemetry.
Sand Papering (S)
false
17
141
585
23
The given surface triangulation is modified in such a way that the distance between
the elements in the final mesh and those of the initial one is bounded by a user specfied tolerance value.
One should use this option, to coarsen when a purely geometrical mesh is needed. (a mesh that keeps
and obeys its geometric features only.) The meshes obtained with this option are usually not suitable
for computation because anisotropic elements may be generated
Geometrical Mesh : Coarsening(-2)
17
170
585
23
The given surface triangulation is modified in such a way that the distance between
the elements in the final mesh and those of the initial one is bounded by a user specfied tolerance value.
One should use this option, to coarsen and enrich when a purely geometrical mesh is needed. (a mesh that keeps
and obeys its geometric features only.) The meshes obtained with this setting are usually not suitable
for computation because anisotropic elements may be generated
Geometrical Mesh : Coarsening and Enrichment (2)
17
199
585
23
The given surface triangulation is modfied in accordance to a size map.
The latter can be either the intrinsic size map (computed automatically
and based on the surface properties, i.e. the local curvatures),
or on a given size map (which is then combined to the intrinsic size map).
One should use this option to coarsen the mesh, when a regular mesh
for computation purposes is desired, i.e. a mesh with good aspect ratios or
good quality elements.
Mesh for finite element computation : Coarsening (-1)
17
228
585
22
The given surface triangulation is modfied in accordance to a size map.
The latter can be either the intrinsic size map (computed automatically
and based on the surface properties, i.e. the local curvatures),
or on a given size map (which is then combined to the intrinsic size map).
One should use this option to coarsen and enrich the mesh, when a regular mesh
for computation purposes is desired, i.e. a mesh with good aspect ratios or
good quality elements
Mesh for finite element computation : Coarsening and Enrichment (1)
10
20
871
161
10
Original Mesh
10
30
861
101
-
10
false
QFrame::Box
Smesh mesh
false
0
-
../../../../../../../../SalomeSrc/SMESH_V6_main/src/Tools/YamsPlug/open.png../../../../../../../../SalomeSrc/SMESH_V6_main/src/Tools/YamsPlug/open.png
18
18
false
-
10
-
or
-
10
Mesh File (GMF format)
-
10
430
540
111
31
PreferDefault
true
If the Units parameter is relative epsilon max correspond to 0.0001x s x tolerance parameter where s is the size of the bounding box of the domain.
If the Units parameter is absolute, the tolerance parameter is expressed in model units :
if P=2 and point coordinaters are givin in millimetre, it menas that the maximal chordal deviation is 2 mm
100000.000000000000000
1.000000000000000
0.100000000000000
30
500
801
37
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:9pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"></p></td></tr></table></body></html>
Units
-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:9pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Set chordal deviation tolerance:</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">This parameter enables the user to bound the maximal chordal deviation allowed,</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">that is, the maximal distance allowed between the detected curve and the plane P</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">of the corresponding mesh face.</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">In other words, it avoids having faces too far away from the curve </p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">they represent (or should represent).</p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"></p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"></p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"></p></td></tr></table></body></html>
Chordal deviation Tolerance
60
540
230
31
-
Values are expressed in the model units.
Absolute
false
-
Values are relative to the bounding box size.
Relative
true
GBUnit
GBTolerance_2
groupBox
GBOptim
SP_Tolerance
RB_Relative
RB_Absolute
Advanced Remeshing Options
10
10
761
71
You can disable :
100
20
271
23
if not set (ridge detection disabled), Yams will not try to detect any new ridge edge by its own mechanism :
it will consider as ridge only the ridges given in the mesh.
All non-ridge edges that would have been detected as ridge by the Ridge angle paramaeter
(see below) will be considered as part of the same continuous patch.
This option should not be checked when all the known ridges of the mesh are given and
when all other possible ridges are not geometric ridges to take into account.
ridge detection
true
100
40
271
23
When not set (point smoothing is disabled), Yams will not try to move the initial given vertices
(along an edge, a ridge or onto the surface), hence Yams will only swap edges, remove vertices
or add vertices (refines) to change the mesh.
point smoothing
true
10
90
841
391
You can control
10
30
91
23
0.890000000000000
0.010000000000000
0.040000000000000
120
20
731
61
This field (as well as tolerance) enables the user to control the accuracy of the
piecewise linear approximation of the surface. This parameter enables the user to
control the maximal angle allowed between two adjacent faces. It can be used to
bound the maximal deviation of the mesh faces from the tangent planes at mesh vertices.
In other words, it avoids having sharp angles between faces representing a smooth curve.
This parameter enables the user to specify the maximal chordal deviation "max relatively to the curvature.
Following that criterion:
- if the chordal deviation epsilon is smaller than epsilon max *r, it is acceptable to remove the considered point;
- if the chordal deviation epsilon is greater than epsiolon max*r, the considered mesh face should be redefined
by adding a point on the curve.
One can see that the smaller the radius r, the harder it is to satisfy this criterion:
epsilon max is a real value corresponding to a percentage, the ratio between the chordal deviation to
the local curvature. This field is used only for optimisation style -O values of -1, 0 and 1.
The default value for "max is set to 0:04 which leads to angles of less than 33 degrees between two adjacent
faces .
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans'; font-size:10pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Sans Serif';">Geometrical approximation : Maximum angle (1-cos(angle)) allowed </span></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Sans Serif';">between a face and a curve </span><span style=" font-family:'Sans Serif'; font-size:8pt;">(not separated by a ridge).</span><span style=" font-family:'Sans Serif';">)</span></p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Sans Serif';"><br /></p></td></tr></table></body></html>
120
80
691
71
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans'; font-size:10pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Sans Serif';">Ridge angle:</span></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Sans Serif';">if the angle between the normal vectors of two adjacent faces</span></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'Sans Serif';">exceeds this value, the edge common to the faces is a ridge</span></p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Sans Serif';"><br /></p></td></tr></table></body></html>
10
100
91
23
90.000000000000000
45.000000000000000
120
160
681
61
This parameter allows the user to prescribe a maximal size hmax
for the mesh elements i.e., the lengths of the edges with respect to the specified
size map. The corresponding values are either relative or absolute depending on the choosen parameter.
The default values are automatically set based on the surface geometry (curvature dependent) and its
bounding box size.
Please note that, as it is not strictly possible to obey the given or computed size map, the actual maximal
size may be slightly bigger than the prescribed ones.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Maximal size allowed around vertices:</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">the lengths of the edges with respect to the specified size map.</p></td></tr></table></body></html>
120
290
691
91
This parameter enables the user to control the element size variation in the triangulation.
Yams will avoid getting two adjacent edges which sizes differ by a factor bigger than this parameter.
To avoid rapid size variations, a size correction procedure is applied to the size map.
In other words: if two adjacent edges are respectively e1 and e2 long
if e2 > parameter * e1 then e02 the new size for the second edge will be set to parameter* e1.
This procedure is de-activated if yams computes a mesh for finite element with only coarsening.
The default value is 1.3, which is the usual value set for computational meshes.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Mesh Gradation ie the element size variation in the triangulation:</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Yams will avoid having two adjacent edges which sizes </p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">vary more than the given gradation.</p></td></tr></table></body></html>
10
300
91
23
0.010000000000000
1.300000000000000
10
170
91
23
0.010000000000000
100.000000000000000
0.100000000000000
100.000000000000000
120
230
661
51
This parameter allows the user to prescribe a maximal size hmax
for the mesh elements i.e., the lengths of the edges with respect to the specified
size map. The corresponding values are either relative or absolute depending on the choosen parameter.
The default values are automatically set based on the surface geometry (curvature dependent) and its
bounding box size.
Please note that, as it is not strictly possible to obey the given or computed size map, the actual maximal
size may be slightly bigger than the prescribed ones.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Minimal size allowed around vertices:</p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">the lengths of the edges with respect to the specified size map.</p></td></tr></table></body></html>
10
230
91
23
0.000000000000000
100.000000000000000
0.100000000000000
5.000000000000000
20
490
751
31
You can enable :
70
530
271
23
if set, Yams creates new vertices placed on the curved surface and adds them to elements.
It means one extra vertex on edge (P2 or quadratic triangles).
New created vertices are saved in the .mesh file under keyword section Vertices
split edge
false
Generic Options
10
30
741
131
Yams Generic Options
40
30
441
34
-
Verbosity Level
-
Qt::Horizontal
28
20
-
10
7
40
70
441
34
-
225
25
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;">
<table border="0" style="-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;">
<tr>
<td style="border: none;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Memory size (in Mbytes)</p></td></tr></table></body></html>
-
Qt::Horizontal
28
20
-
The program requires roughly about 370 bytes per point. It is thus possible to estimate a priori
the required memory size to complete a job. As an example of memory space needed, a mesh
of 543,652 points (1,087,716 triangles) requires 182 Mbytes (about 351 bytes per point). Conversely,
a workstation having 512 Mbytes of memory can handle a mesh of about 2,750,000 points.
The memory needed for mesh modification is allocated dynamically at the beginning of the procedure
(data reading), based on the initial triangulation size. When the program reaches the amount of maximal
memory allowed, it will stop inserting points and, if possible, the current mesh will be saved as it is,
valid and conformal, provided the input mesh was valid and conformal.
Specify the memory if:
- the automatically allocated memory reveals insufficient when the user asked to enrich the given mesh;
- you want to limit the amount of memory used by the program.
If the input mesh size requires more memory than requested or if the allocated memory (user defined or not)
exceeds the machine capabilities, the tool will stop because of insufficient memory.
100000
0
10
230
741
141
Plug-In Generic Options
20
40
391
18
File used to save Yams Params :
20
70
30
31
../../../../../../../../SalomeSrc/SMESH_V6_main/src/Tools/YamsPlug/open.png../../../../../../../../SalomeSrc/SMESH_V6_main/src/Tools/YamsPlug/open.png
60
70
661
31