Mesh FromPartShape: Difference between revisions

From FreeCAD Documentation
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Just selecting {{KEY| Meshes}} → {{KEY|[[Image:Mesh_Mesh_from_Shape.svg|32px]] Create Mesh from shape...}} will give you an additional menu to choose your shape to mesh
Just selecting {{KEY| Meshes}} → {{KEY|[[Image:Mesh_Mesh_from_Shape.svg|32px]] Create Mesh from shape...}} will give you an additional menu to choose your shape to mesh



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'''Standard Mesher'''
===Standard Mesher===


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Surface deviation: If this number is smaller the mesh becomes finer. Smallest value is 0,001.
Surface deviation: If this number is smaller the mesh becomes finer. Smallest value is 0,001.



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'''Mefisto Mesher'''
===Mefisto Mesher===


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Maximum edge length: If this number is smaller the mesh becomes finer. Smallest value is 0,000.
Maximum edge length: If this number is smaller the mesh becomes finer. Smallest value is 0,000.



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'''Netgen Mesher'''
===Netgen Mesher===


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You can choose between mesh being:
You can choose between mesh being:
*Very coarse
*{{MenuCommand|Very coarse}}
*Coarse
*{{MenuCommand|Coarse}}
*Moderate
*{{MenuCommand|Moderate}}
*Fine
*{{MenuCommand|Fine}}
*Very fine
*{{MenuCommand|Very fine}}
*{{MenuCommand|User defined}}<br />For Mesh being "user defined" you can set these values:<br />{{MenuCommand|Mesh size grading}} : If this parameter is smaller, mesh becomes finer. A value in the range of 0.1-1.<br />{{MenuCommand|Element per edge}} : If this parameter is larger, mesh becomes finer. A value in the range of 0.2-10.<br />{{MenuCommand|Element per curvature radius}} : If this parameter is larger, mesh becomes finer. A value in the range of 0.2-10.
*User defined

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For Mesh being "user defined" you can set these values:
**Mesh size grading : If this parameter is smaller, mesh becomes finer. A value in the range of 0.1-10.
**Element per edge : If this parameter is larger, mesh becomes finer. A value in the range of 0.1-10.
**Element per curvature radius : If this parameter is larger, mesh becomes finer. A value in the range of 0.1-10.
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For every main option you can also choose:
For every main option you can also choose:
*Optimize surface : Whether optimization of surface shape will be done.
*{{MenuCommand|Optimize surface}} : Whether optimization of surface shape will be done.
*Second order elements：Whether second order elments will be generated.
*{{MenuCommand|Second order elements}} Whether second order elments will be generated.
*Quad dominant：Whether meshes will be arranged like hexahedral.
*{{MenuCommand|Quad dominant}} Whether meshes will be arranged like hexahedral.


== Scripting == <!--T:5-->
== Scripting == <!--T:5-->

Revision as of 20:34, 10 March 2019

Other languages:

Mesh MeshFromShape‏‎

Menu location
Meshes → Create Mesh from Shape
Workbenches
Mesh
Default shortcut
None
Introduced in version
-
See also
None

Introduction

This command creates a mesh from a shape object.

Use

  1. Select the shape object.
  2. Choose Meshes → Create Mesh from shape... from the top menu.
  3. A menu will ask for the mesher to use and the appropriate values for the mesher


Just selecting Meshes → Create Mesh from shape... will give you an additional menu to choose your shape to mesh

Standard Mesher

Surface deviation: If this number is smaller the mesh becomes finer. Smallest value is 0,001.

Mefisto Mesher

Maximum edge length: If this number is smaller the mesh becomes finer. Smallest value is 0,000.

Netgen Mesher

You can choose between mesh being:

  • Very coarse
  • Coarse
  • Moderate
  • Fine
  • Very fine
  • User defined
    For Mesh being "user defined" you can set these values:
    Mesh size grading : If this parameter is smaller, mesh becomes finer. A value in the range of 0.1-1.
    Element per edge : If this parameter is larger, mesh becomes finer. A value in the range of 0.2-10.
    Element per curvature radius : If this parameter is larger, mesh becomes finer. A value in the range of 0.2-10.

For every main option you can also choose:

  • Optimize surface : Whether optimization of surface shape will be done.
  • Second order elements Whether second order elments will be generated.
  • Quad dominant Whether meshes will be arranged like hexahedral.

Scripting

This tool can be used in macros and from the Python console by using the following function: 

MeshPart.meshFromShape(Shape=Shape, MaxLength=520)

Example: 

import FreeCAD, Draft, Arch, Mesh, MeshPart

Line = Draft.makeWire([FreeCAD.Vector(0, 0, 0),FreeCAD.Vector(2000, 2000, 0)])
Wall = Arch.makeWall(Line, width=150, height=3000)
FreeCAD.ActiveDocument.recompute()

Shape = Wall.Shape.copy(False)
Shape.Placement = Wall.getGlobalPlacement()

mesh_obj = FreeCAD.ActiveDocument.addObject("Mesh::Feature", "Mesh")
mesh_obj.Mesh = MeshPart.meshFromShape(Shape=Shape, MaxLength=520)
mesh_obj.ViewObject.DisplayMode = "Flat Lines"

Notes


Mesh
User documentation
Retrieved from "http://wiki.freecad.org/index.php?title=Mesh_FromPartShape&oldid=439636"