Mesh FromPartShape/ro

Export

RemeshGmsh

Mesh

Description

The inverse operation is Part ShapeFromMesh from the Part Workbench.

Utilizare

1. Selectați obiectul de tip formă.
2. Alegeți Meshes → Create Mesh from shape... din meniul principal.
3. Un meniu va cere utilizarea mesher-ului/tessellation și valorile corespunzătoare pentru mesher

Doar selectând Meshes → Create Mesh from shape... vă va oferi un meniu suplimentar pentru a vă alege forma de transformat în plasă

• Fineness: select an options for the finesse of the mesh:
  • Very coarse
  • Coarse
  • Moderate
  • Fine
  • Very fine
  • User defined: for this option the following settings can be specified:
    • Mesh size grading: a smaller value results in a finer mesh. The value must be in the 0.1 - 1.0 range.
    • Element per edge: a larger value results in a finer mesh. The value must be in the 0.2 - 10.0 range.
    • Element per curvature radius: a larger value results in a finer mesh. The value must be in the 0.2 - 10 range.
• Optimize surface: if checked, the surface shape will be optimized.
• Second order elements: if checked, second order elements will be generated resulting in a finer mesh.
• Quad dominated: if checked, the mesh will preferably use quadrilateral faces.

Gmsh mesher

For Linux users: the external Gmsh module is required.

• Meshing: select a meshing option:
  • Automatic
  • Adaptive
  • Delaunay
  • Frontal
  • BAMG
  • Frontal Quad
  • Parallelograms
• Max. element size: a smaller value results in a finer mesh. Specify 0 to have this size automatically determined.
• Min. element size: a smaller value results in a finer mesh. The value should be smaller than the Max. element size. Specify 0 to have this size automatically determined.
• Angle: seems to be unsupported at this time.
• Path: press the ... button and browse to the gmsh.exe path.
• If the meshing process takes too long you can press the Kill button to abort it.
• Press the Clear button to remove the information in the text area.

Notes

• This command is not restricted to objects created with the Part workbench. It can create a mesh from any object that has a shape including objects created with the PartDesign workbench.
• The Std Export command can export shape objects directly to a mesh format.
• See also: Export to STL or OBJ tutorial.

Preferences

Standard mesher

• The Surface deviation setting is stored: Tools → Edit parameters... → BaseApp → Preferences → Mod → Mesh → Meshing → Standard → LinearDeflection.
• The Angular deviation setting is stored: Tools → Edit parameters... → BaseApp → Preferences → Mod → Mesh → Meshing → Standard → AngularDeflection.
• The Relative surface deviation setting is stored: Tools → Edit parameters... → BaseApp → Preferences → Mod → Mesh → Meshing → Standard → RelativeLinearDeflection.

Gmsh mesher

• The Path is stored: Tools → Edit parameters... → BaseApp → Preferences → Mod → Mesh → Meshing → gmshExe.

Properties

See: Mesh Feature.

Scripting

See also: FreeCAD Scripting Basics.

To create a mesh object from a shape object use the meshFromShape method of the MeshPart module. This method has several signatures. The signature determines the mesher that will be used. The example below uses the Mefisto mesher signature.

import FreeCAD, Part, Mesh, MeshPart

cyl = FreeCAD.ActiveDocument.addObject("Part::Cylinder","Cylinder")
FreeCAD.ActiveDocument.recompute()

msh = FreeCAD.ActiveDocument.addObject("Mesh::Feature", "Mesh")
msh.Mesh = MeshPart.meshFromShape(Shape=cyl.Shape, MaxLength=1)
msh.ViewObject.DisplayMode = "Flat Lines"

Export

RemeshGmsh

Mesh

Mesh

• Miscellaneous: Import mesh, Export mesh, Create mesh from shape, Regular solid, Unwrap Mesh, Unwrap Face
• Modifying: Harmonize normals, Flip normals, Fill holes, Close hole, Add triangle, Remove components, Remove components by hand, Smooth, Refinement, Decimation, Scale

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• Boolean: Union, Intersection, Difference
• Cutting: Cut mesh, Trim mesh, Trim mesh with a plane, Create section from mesh and plane, Cross-sections
• Components and segments: Merge, Split by components, Create mesh segments, Create mesh segments from best-fit surfaces

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• Analyze: Evaluate and repair mesh, Face info, Curvature plot, Curvature info, Check solid mesh, Boundings info
• Additional: Import Export Preferences, OpenSCAD Workbench, Mesh Scripting

User documentation

• Getting started
• Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
• Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate

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• Help: Tutorials, Video tutorials
• Workbenches: Std Base, Assembly, BIM, CAM, Draft, FEM, Inspection, Material, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework

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• Addons: Addon Manager, External workbenches, Scripting and macros

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• Hubs: User hub, Power users hub, Developer hub