Mesh API

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(November 2018) This information may be incomplete and outdated. For the latest API, see the autogenerated API documentation.

The Mesh objects can be manipulated by adding new facets, deleting facets, importing from an STL file, transforming the mesh and much more. For a complete overview of what can be done see also the Mesh Workbench documentation. A mesh object cannot be added to an existing document directly. Therefore the document must create an object with a property class that supports meshes. Example: 

m = Mesh.Mesh()
... # Manipulate the mesh
d = FreeCAD.activeDocument() # Get a reference to the actie document
f = d.addObject("Mesh::Feature", "Mesh") # Create a mesh feature
f.Mesh = m # Assign the mesh object to the internal property
d.recompute()


addFacet(Facet)

Description: Adds a facet to the mesh

Returns:

addFacets(list)

Description: Adds a list of facets to the mesh

Returns:

addMesh(Mesh)

Description: Combines this mesh with another mesh.

Returns:

clear( )

Description: Clears the mesh

Returns:

coarsen( )

Description: Coarsens the mesh

Returns:

collapseEdge(Edge)

Description: Removes an edge and both facets that share this edge

Returns:

collapseFacet(Facet)

Description: Removes a facet

Returns:

collapseFacets(list)

Description: Removes a list of facets

Returns:

copy( )

Description: Creates a copy of this mesh

Returns: a Mesh object

countComponents( )

Description: Get the number of topological independent areas

Returns: an integer

countNonUniformOrientedFacets( )

Description: Get the number of wrong oriented facets

Returns: an integer

countSegments( )

Description: Get the number of segments which may also be 0

Returns: an integer

crossSections( )

Description: Get cross-sections of the mesh through several planes

Returns:

difference(Mesh)

Description: Difference of this and the given mesh object.

Returns:

fillupHoles( )

Description: Fillup holes

Returns:

fixDeformations( )

Description: Repair deformed facets

Returns:

fixDegenerations( )

Description: Remove degenerated facets

Returns:

fixIndices( )

Description: Repair any invalid indices

Returns:

fixSelfIntersections( )

Description: Repair self-intersections

Returns:

flipNormals( )

Description: Flip the mesh normals

Returns:

foraminate( )

Description: Get a list of facet indices and intersection points

Returns:

getPlanes( )

Description: Get all planes of the mesh as segment. In the worst case each triangle can be regarded as single plane if none of its neighbors is coplanar.

Returns:

getSegment(integer)

Description: Get a list of facet indices that describes a segment

Returns:

getSeparateComponents( )

Description: Returns a list containing the different components (separated areas) of the mesh as separate meshes

Returns: a list

harmonizeNormals( )

Description: Adjust wrong oriented facets

Returns:

hasNonManifolds( )

Description: Check if the mesh has non-manifolds

Returns: a boolean

hasNonUniformOrientedFacets( )

Description: Checks if the mesh has facets with inconsistent orientation

Returns:

hasSelfIntersections( )

Description: Check if the mesh intersects itself

Returns:

inner( )

Description: Get the part inside of the intersection

Returns:

insertVertex(Vertex)

Description: Inserts a vertex into a facet

Returns:

intersect(Mesh)

Description: Intersection of this and the given mesh object.

Returns:

isSolid( )

Description: Check if the mesh is a solid

Returns:

meshFromSegment( )

Description: Create a mesh from segment

Returns:

nearestFacetOnRay(tuple, tuple)

Description: Get the index and intersection point of the nearest facet to a ray. The first parameter is a tuple of three floats the base point of the ray, the second parameter is ut uple of three floats for the direction. The result is a dictionary with an index and the intersection point or an empty dictionary if there is no intersection.

Returns: a dictionary

offset(float)

Description: Move the point along their normals

Returns:

offsetSpecial(float)

Description: Move the point along their normals

Returns:

optimizeEdges( )

Description: Optimize the edges to get nicer facets

Returns:

optimizeTopology( )

Description: Optimize the edges to get nicer facets

Returns:

outer( )

Description: Get the part outside the intersection

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printInfo( )

Description: Get detailed information about the mesh

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read( )

Description: Read in a mesh object from file.

Returns:

refine( )

Description: Refine the mesh

Returns:

removeComponents(integer)

Description: Remove components with less or equal to number of given facets

Returns:

removeDuplicatedFacets( )

Description: Remove duplicated facets

Returns:

removeDuplicatedPoints( )

Description: Remove duplicated points

Returns:

removeFacets(list)

Description: Remove a list of facet indices from the mesh

Returns:

removeFoldsOnSurface( )

Description: Remove folds on surfaces

Returns:

removeNonManifolds( )

Description: Remove non-manifolds

Returns:

rotate( )

Description: Apply a rotation to the mesh

Returns:

setPoint(int, Vector)

Description: Sets the point at index.

Returns:

smooth( )

Description: Smooth the mesh

Returns:

snapVertex( )

Description: Insert a new facet at the border

Returns:

splitEdge( )

Description: Split edge

Returns:

splitEdges( )

Description: Split all edges

Returns:

splitFacet( )

Description: Split facet

Returns:

swapEdge( )

Description: Swap the common edge with the neighbor

Returns:

transform( )

Description: Apply a transformation to the mesh

Returns:

transformToEigen( )

Description: Transform the mesh to its eigenbase

Returns:

translate(Vector)

Description: Apply a translation to the mesh

Returns:

unite(Mesh)

Description: Union of this and the given mesh object.

Returns:

write(string)

Description: Write the mesh object into file.

Returns:

writeInventor( )

Description: Write the mesh in OpenInventor format to a string.

Returns: a string

Area

Returns: the area of the mesh object.

CountEdges

Returns: the number of vertices of the mesh object.

CountFacets

Returns: the number of facets of the mesh object.

CountPoints

Returns: the number of points of the mesh object.

Facets

Returns: A collection of facets; With this attribute it is possible to get access to the facets of the mesh: for f in mesh.Facets: print f. Facet.Points is a list of coordinate-tupels for the vertices. Facet.PointIndices is a list of indice for the vertices of the facet. WARNING! store Facets in a local variable as it is generated on the fly, each time it is accessed.

Points

Returns: A collection of the mesh points; With this attribute it is possible to get access to the points of the mesh: for p in mesh.Points: print p.x, p.y, p.z,p.Index.WARNING! store Points in a local variable as it is generated on the fly, each time it is accessed.

Topology

Returns: the points and face indices as tuple. Topology[0] is a list of all vertices. Each being a tuple of 3 coordinates. Topology[1] is a list of all polygons. Each being a list of vertex indice into Topology[0] WARNING! store Topology in a local variable as it is generated on the fly, each time it is accessed.

Volume

Returns: the volume of the mesh object.

BoundBox

Returns: the BoundBox of the object

Matrix

Returns: the current transformation of the object as matrix

Placement

Returns: the current transformation of the object as placement


User documentation