Mesh Workbench/es

The Mesh Workbench handles triangle meshes. Meshes are a special type of 3D object, composed of triangles connected by their edges and their corners (also called vertices).



Un ejemplo de un objeto malla

Muchas aplicaciones 3D usan mallas como su objeto 3D básico, como sketchup, blender, maya o 3d studio max. Dado que las mallas son objetos muy simples, que contiene sólo los vértices (puntos), los bordes y las caras (triangulares), son muy fáciles de crear, modificar, dividir, estirar, y fácilmente se puede pasar de una aplicación a otra sin ningún tipo de pérdida. Además, ya que contienen datos muy sencillos, las aplicaciones 3D pueden manejar gran cantidad de mallas sin ningún problema. Por estas razones, las mallas son a menudo el tipo de objeto 3D de elección preferente en aplicaciones de tratamiento de películas, animación y creación de imágenes.

In the field of engineering, however, meshes present one big limitation: They are very dumb objects, only composed of points, lines and faces. They are only made of surfaces, and have no mass information, so they don't behave as solids. In a mesh there is no automatic way to know if a point is inside or outside the object. This means that all solid-based operations, such as addition or subtraction, are always a bit difficult to perform on meshes, and return errors often.

Como FreeCAD es una aplicación de ingeniería, es evidente que preferimos trabajar con tipos de objetos 3D más "completos" ( o "inteligentes"), que puedan incorporar más información, tales como la masa, el comportamiento de sólidos, o incluso parámetros personalizados. El módulo de malla fue inicialmente creado para servir como "banco de pruebas", pero al ser capaz de leer, manipular y convertir mallas es también muy importante para FreeCAD. Muy a menudo, en tu flujo de trabajo, recibirás los datos 3D en formato de malla. Tendrás que manejar esos datos, analizarlos para detectar errores u otros problemas que impiden convertirlos en objetos más inteligentes, y, por último, convertirlos en esos objetos "más inteligentes", que podrán ser manejados por el Entorno de piezas.

Using the mesh module
The mesh module has currently a very simple interface, all its functions are grouped in the Mesh menu entry. The most important operations you can currently do with meshes are:
 * [[Image:Mesh_ImportMesh.png|32px]] Import Mesh: Import meshes in several file formats
 * [[Image:Mesh_ExportMesh.png|32px]] Export Mesh: Export meshes in several file formats
 * [[Image:Mesh MeshFromShape.png|32px]] Create Mesh from shape: Convert Part objects into meshes
 * [[Image:Mesh HarmonizeNormals.png|32px]] Harmonize Normals: Harmonize normals
 * [[Image:Mesh_FlipNormals.png|32px]] Flip Normals: Flip normals
 * Fill Holes...: Fill up holes
 * [[Image:Mesh_FillInteractiveHole.png|32px]] Close hole: Close holes in meshes
 * [[Image:Mesh_RemoveComponents.png|32px]] Remove components...: Remove components of meshes
 * Remove components by hand...: Remove components of meshes by hand
 * Add triangle: Add triangle
 * Smooth...: Smooth mesh


 * Analyze curvature, faces, and check if a mesh can be safely converted into a solid
 * Evaluate & Repair mesh...: Evaluates and repairs meshes
 * [[Image:Mesh EvaluateFacet.png|32px]] Face Info: Gives info on faces
 * Curvature Info: Gives info on curvature
 * Check solid mesh: Checks the solid if it can be converted to a mesh
 * Boundings info...: Evaluates the bounding box of a mesh


 * [[Image:Mesh_Regular_Solid.png|32px]] Regular solid... Create mesh primitives, like cubes, cylinders, cones, or spheres:
 * [[Image:Mesh_Cube.png|32px]] Create a mesh cube
 * [[Image:Mesh_Cylinder.png|32px]] Create a mesh cylinder
 * [[Image:Mesh_Cone.png|32px]] Create a mesh cone
 * [[Image:Mesh_Sphere.png|32px]] Create a mesh sphere
 * [[Image:Mesh_Ellipsoid.png|32px]] Create a mesh ellipsoid
 * [[Image:Mesh_Torus.png|32px]] Create a mesh torus


 * Do Boolean operations with meshes
 * Union: Does a union (fusion) on meshes
 * Intersection: Does an intersection (common) on meshes
 * Difference: Does a difference (cut) on meshes


 * Merge: Merges meshes
 * Select Mesh: Selects meshes
 * [[Image:Mesh Cut.png|32px]] Cut mesh: Cut meshes along a line
 * Split Mesh: Splits meshes
 * [[Image:Mesh MakeSegment.png|32px]] Make segment: Makes a segment
 * Trim mesh: Trims meshes
 * Trim mesh with a plane: Trims meshes with a plane
 * Create mesh segments...: Creates mesh segments
 * [[Image:Mesh_CurvaturePlot.png|32px]] Curvature Plot: Creates a curvature plot

These are only some of the basic operations currently present in the Mesh module interface.

More mesh tools are available in the OpenSCAD Workbench.

But the FreeCAD meshes can also be handled in many more ways by scripting.

Links

 * FreeCAD and Mesh Import