diff --git a/doc/FAQ b/doc/FAQ index db0750464de326ee585e5364ff48d1586fa14ac8..90c49b6dcb17120ca79e8f4102f6ffb84978106a 100644 --- a/doc/FAQ +++ b/doc/FAQ @@ -1,4 +1,4 @@ -$Id: FAQ,v 1.75 2006-09-07 02:56:53 geuzaine Exp $ +$Id: FAQ,v 1.76 2006-11-27 19:32:23 geuzaine Exp $ This is the Gmsh FAQ @@ -110,7 +110,7 @@ Section 4: Geometry module * 4.1 Does Gmsh support NURBS curves/surfaces? -Not yet. +Only via STEP, IGES or BREP models (not in GEO files). * 4.2 Gmsh is very slow when I use many transformations (Translate, Rotate, Symmetry, Extrude, etc. ). What's wrong? @@ -152,13 +152,13 @@ boundary curves, as well as the boundaries of these curves (i.e., points). If 'Recursive' is not set, only the surface (the dashed cross) would be shown. -- In the 'Numeric Input' tab, you can choose to show or hide any -entity or mesh element by giving its number. You can also use the "*" -character to select all the entities/elements at once. For example, to -show only the mesh element 13245 in the mesh, you would enter "*" in -the 'Element' input field and click on 'Hide' (this will hide all the -mesh elements); and then enter "13245" in the 'Element' input field -and click on 'Show' (this will show the element 13245). To show other +- In the 'Selector' tab, you can choose to show or hide any entity or +mesh element by giving its number. You can also use the "*" character +to select all the entities/elements at once. For example, to show only +the mesh element 13245 in the mesh, you would enter "*" in the +'Element' input field and click on 'Hide' (this will hide all the mesh +elements); and then enter "13245" in the 'Element' input field and +click on 'Show' (this will show the element 13245). To show other element, you would just enter another number in the input field, click on 'Show', etc. @@ -223,14 +223,25 @@ hexahedra instead of tetrahedra. * 5.8 Tools->Visibility does not seem to work with extruded meshes. -This is fixed in Gmsh >= 1.54. However, when region numbers are -explicitly assigned to mesh entities in the extrude commands (which -partially destroys the geometry/mesh relationship), the 'Visibility' -tool will only work as expected when displaying elementary -entities. In this particular case, the only solution to visualize -extruded physical entities is to save the mesh, and to read it again. +This is fixed in Gmsh >= 1.54. Note that in Gmsh < 2.0, when region +numbers are explicitly assigned to mesh entities in the extrude +commands (which partially destroys the geometry/mesh relationship), +the 'Visibility' tool will only work as expected when displaying +elementary entities. In this particular case, the only solution to +visualize extruded physical entities is to save the mesh, and to read +it again. -* 5.9 Does Gmsh support curved elements? +* 5.9 Can I explicitly assign region numbers to extruded layers? + +No, this feature has been removed in Gmsh 2.0. You must now use the +standard entity number instead. + +* 5.10 Did you remove the elliptic mesh generator in Gmsh 2.0? + +Yes. You can achieve the same result by using the transfinite +algorithm with smoothing (e.g., with "Mesh.Smoothing = 10"). + +* 5.11 Does Gmsh support curved elements? Yes, Gmsh can generate both 1st order and 2nd order elements. To generate second order elements, click on 'Second order' in the mesh @@ -238,16 +249,12 @@ menu after the mesh is completed. To always generate 2nd order elements, select 'Generate second order elements' in the mesh option panel. From the command line, you can also use '-order 2'. -* 5.10 Can I import an existing surface mesh in Gmsh and use it to +* 5.12 Can I import an existing surface mesh in Gmsh and use it to build a 3D mesh? -Yes, see for example 'demos/sphere-discrete.geo'. You can either use -the surface mesh "as-is" (for example to build a 3D mesh from an -existing boundary mesh), or you can remesh the surfaces to respect -certain constraints (see the STL menu in the mesh module). This is -still an experimental feature as of this writing (version 2.0). +Yes, see for example 'demos/sphere-discrete.geo'. -* 5.11 How do I define boundary conditions or material properties in +* 5.13 How do I define boundary conditions or material properties in Gmsh? By design, Gmsh does not try to incorporate every possible definition @@ -260,12 +267,12 @@ Lines, Physical Surfaces and Physical Volumes): see the reference manual as well as the tutorials (in particular 'tutorial/t1.geo') for a detailed description and some examples. -* 5.12 How can I display only the mesh associated with selected +* 5.14 How can I display only the mesh associated with selected geometrical entities? See question 4.3. -* 5.13 How can I "explore" a mesh (for example, to see inside a +* 5.15 How can I "explore" a mesh (for example, to see inside a complex structure)? You can use 'Tools->Clipping Planes' to extract the region of @@ -279,7 +286,7 @@ fields. There is also one additional clipping plane available for "cutting" only the mesh (by keeping entire elements), in 'Tools->Options->Mesh->Cut Plane'. -* 5.14 What is the signification of Rho, Eta and Gamma in +* 5.16 What is the signification of Rho, Eta and Gamma in Tools->Statistics? They measure the quality of the tetrahedra in a mesh: diff --git a/doc/texinfo/opt_mesh.texi b/doc/texinfo/opt_mesh.texi index 92025fafe00096978680e1581cfa9054fc9962fb..3254b997884a2615e2f5076d7a5c885816706158 100644 --- a/doc/texinfo/opt_mesh.texi +++ b/doc/texinfo/opt_mesh.texi @@ -19,11 +19,6 @@ Saved in: @code{General.OptionsFileName} Default value: @code{1}@* Saved in: @code{General.OptionsFileName} -@item Mesh.AllowDegeneratedExtrude -Allow the generation of degenerated hexahedra or prisms during extrusion@* -Default value: @code{0}@* -Saved in: @code{-} - @item Mesh.AngleSmoothNormals Threshold angle below which normals are not smoothed@* Default value: @code{30}@* @@ -134,11 +129,6 @@ Only contruct the n-dimensional initial mesh (no refinement)@* Default value: @code{0}@* Saved in: @code{General.OptionsFileName} -@item Mesh.Interactive -Show the construction of 2D anisotropic mesh in real time@* -Default value: @code{0}@* -Saved in: @code{General.OptionsFileName} - @item Mesh.LabelType Type of element label (0=element number, 1=elementary entity number, 2=physical entity number, 3=partition number, 4=coordinates)@* Default value: @code{0}@* @@ -254,11 +244,6 @@ Display mesh vertices (nodes)?@* Default value: @code{0}@* Saved in: @code{General.OptionsFileName} -@item Mesh.PointInsertion -Point insertion method for isotropic 2D algorithm (1=center of circumscribed circle, 2=center of gravity)@* -Default value: @code{1}@* -Saved in: @code{General.OptionsFileName} - @item Mesh.PointNumbers Display mesh node numbers?@* Default value: @code{0}@*