Mesh Class

Initializes a new empty mesh.

Protected constructor for internal use.

Gets access to the vertex hidden/visibility collection in this mesh. This is a runtime property and it is not saved in the 3dm file.

Gets the number of disjoint (topologically unconnected) pieces in this mesh.

Indicates if this object has been disposed or the document it originally belonged to has been disposed.

Gets access to the face normal collection in this mesh.

Gets access to the mesh face list.

Returns true if the Brep.TryConvertBrep function will be successful for this object

Will return true if SetCachedTextureCoordinates has been called; otherwise will return false.

HasPrincipalCurvatures

Gets true if this class has any custom information attached to it through UserData.

Returns true if every mesh "edge" has two or more faces.

true if object can be accurately modified with "squishy" transformations like projections, shears, and non-uniform scaling.

If true this object may not be modified. Any properties or functions that attempt to modify this object when it is set to "IsReadOnly" will throw a NotSupportedException.

Returns true if the mesh is manifold and every pair of faces that share an "edge" have compatible orientations.

Returns true if the mesh is solid. A "solid" is a closed oriented manifold.

Tests an object to see if it is valid.

Gets access to the mesh ngon list.

Ngons represent groups of Faces (triangles + quads).

Faces are used to tessellate an Ngon internally.

When a triangle or quad is referenced in the Ngon list, it is no longer visualized and conceived as a single entity, but takes part of the Ngon.

If you need to get access to both Ngons and the faces that are not referenced by Ngons, that is, all polygons that are visible in the mesh, then use the GetNgonAndFacesEnumerable helper method.

Gets access to the vertex normal collection in this mesh.

Useful for switch statements that need to differentiate between basic object types like points, curves, surfaces, and so on.

Number of partition information chunks stored on this mesh based on the last call to CreatePartitions

Gets access to the vertex texture coordinate collection in this mesh.

Gets the MeshTopologyEdgeList object associated with this mesh.

This object stores edge connectivity.

Gets the MeshTopologyVertexList object associated with this mesh.

This object stores vertex connectivity and the indices of vertices that were unified while computing the edge topology.

List of custom information that is attached to this class.

Dictionary of custom information attached to this class. The dictionary is actually user data provided as an easy to use shareable set of information.

Gets the amount of user strings.

Gets access to the (optional) vertex color collection in this mesh.

Gets access to the vertices set of this mesh.

Append a list of meshes. This function is much more efficient than making repeated calls to Mesh.Append(Mesh) when lots of meshes are being joined into a single large mesh.

Appends a copy of another mesh to this one and updates indices of appended mesh parts.

Examines the mesh and logs a description of what it finds right or wrong. The various properties the function checks for are described in MeshCheckParameters.

Removes surface parameters, curvature parameters and surface statistics from the mesh.

Removes all texture coordinate information from this mesh.

Gets the point on the mesh that is closest to a given test point. Similar to the ClosestPoint function except this returns a MeshPoint class which includes extra information beyond just the location of the closest point.

Gets the point on the mesh that is closest to a given test point.

Gets the point on the mesh that is closest to a given test point.

Gets the point on the mesh that is closest to a given test point.

Collapses multiple mesh faces, with areas less than LessThanArea and greater than GreaterThanArea, based on the principles found in Stan Melax's mesh reduction PDF, see http://pomax.nihongoresources.com/downloads/PolygonReduction.pdf

Collapses a multiple mesh faces, determined by face aspect ratio, based on criteria found in Stan Melax's polygon reduction, see http://pomax.nihongoresources.com/downloads/PolygonReduction.pdf

Collapses multiple mesh faces, with greater/less than edge length, based on the principles found in Stan Melax's mesh reduction PDF, see http://pomax.nihongoresources.com/downloads/PolygonReduction.pdf

Evaluate a mesh color at a set of barycentric coordinates.

Evaluate a mesh normal at a set of barycentric coordinates. Barycentric coordinates must be assigned in accordance with the rules as defined by MeshPoint.T.

Removes any unreferenced objects from arrays, re-indexes as needed and shrinks arrays to minimum required size.

If this piece of geometry is a component in something larger, like a BrepEdge in a Brep, then this function returns the component index.

Compute an approximation of the discrete curvatures of the mesh vertices, according to which type of curvature information is requested. This method will not yield meaningful values on nonmanifold vertices, and nan on naked vertices. For now, this method operates solely on the mesh topology (the fully welded mesh), but distribtes the result across all the ordinary vertices. This method is a const and thread-safe method and will leave the m_K array untouched. An integer indicating which curvature is desired. gaussian_curvature = 1, mean_curvature = 2, minimum unsigned radius of curvature = 3, maximum unsigned radius of curvature = 4 Resulting curvature array on success, null on failure. On success, the length of the array is the number of vertices.

Compute thickness metrics for this mesh.

Compute thickness metrics for this mesh.

Compute thickness metrics for this mesh.

Assigns a parent object and a sub-object index to this.

Copies mesh values into this mesh from another mesh.

Computes the solid difference of two sets of Meshes.

Computes the solid difference of two sets of Meshes.

Computes the solid intersection of two sets of meshes.

Computes the solid intersection of two sets of meshes.

Splits a set of meshes with another set.

Splits a set of meshes with another set.

Computes the solid union of a set of meshes. WARNING: Use the overload that takes a tolerance or options.

Computes the solid union of a set of meshes.

Computes the solid union of a set of meshes.

(Old call maintained for compatibility.)

Constructs contour curves for a mesh, sectioned at a plane.

(Old call maintained for compatibility.)

Constructs contour curves for a mesh, sectioned along a linear axis.

Attempts to create a 3d convex hull mesh from input points.

Constructs a mesh by extruding a curve along a vector.

Constructs a mesh by extruding a curve along a vector.

Constructs new mesh that matches a bounding box.

Constructs new mesh that matches an aligned box.

Constructs new mesh from 8 corner points.

Constructs a mesh from a brep.

Constructs a mesh from a brep.

Attempts to create a Mesh that is a triangulation of a simple closed polyline that projects onto a plane.

Constructs a solid mesh cone.

Constructs a mesh cone.

Constructs a mesh cone.

Constructs a mesh from an extruded curve. This method is designed for projecting curves onto a mesh. In most cases, a better to use CreateExtrusion(Curve, Vector3d).

Constructs a new mesh pipe from a curve.

Constructs a capped mesh cylinder.

Constructs a mesh cylinder.

Constructs a mesh cylinder.

Constructs a mesh cylinder.

Constructs a mesh from a brep.

Constructs a sub-mesh, that contains a filtered list of faces.

Repairs meshes with vertices that are too near, using a tolerance value.

Creates a mesh by analizing the edge structure. Input lines could be from the extraction of edges from an original mesh.

Creates a single mesh face from the given input.

Do not use this overload. Use version that takes a tolerance parameter instead.

Attempts to construct a mesh from a closed planar curve.RhinoMakePlanarMeshes

Constructs a planar mesh grid.

Constructs a mesh sphere.

Create a mesh from a SubD limit surface

Create a mesh from a SubD control net

Create a mesh from a SubD control net including texture coordinates

Constructs a mesh from a surface

Constructs a mesh from a surface

Calculate a mesh representation of a surface's control net.

Attempts to create a mesh that is a triangulation of a list of points, projected on a plane, including its holes and fixed edges.

Constructs a mesh torus.

Constructs a icospherical mesh. A mesh icosphere differs from a standard UV mesh sphere in that it's vertices are evenly distributed. A mesh icosphere starts from an icosahedron (a regular polyhedron with 20 equilateral triangles). It is then refined by splitting each triangle into 4 smaller triangles. This splitting can be done several times.

In ancient times (or modern smart phone times), some rendering engines were only able to process small batches of triangles and the CreatePartitions() function was provided to partition the mesh into subsets of vertices and faces that those rendering engines could handle.

Construct a mesh patch from a variety of input geometry.

Constructs a quad mesh sphere. A quad mesh sphere differs from a standard UV mesh sphere in that it's vertices are evenly distributed. A quad mesh sphere starts from a cube (a regular polyhedron with 6 square sides). It is then refined by splitting each quad into 4 smaller quads. This splitting can be done several times.

Creates a new unwelded mesh from an existing mesh. Texture coordinates are ignored.

Populate the vertex colors from a bitmap image.

Returns a CRC calculated from the information that defines the object. This CRC can be used as a quick way to see if two objects are not identical.

Destroys mesh partition.

Removes topology data, forcing all topology information to be recomputed.

Destroys the mesh vertex access tree.

Actively reclaims unmanaged resources that this instance uses.

Overridden in order to destroy local display cache information

Constructs a copy of this mesh. This is the same as DuplicateMesh.

Constructs a copy of this mesh. This is the same as Duplicate.

Constructs a light copy of this object. By "light", it is meant that the same underlying data is used until something is done to attempt to change it. For example, you could have a shallow copy of a very heavy mesh object and the same underlying data will be used when doing things like inspecting the number of faces on the mesh. If you modify the location of one of the mesh vertices, the shallow copy will create a full duplicate of the underlying mesh data and the shallow copy will become a deep copy.

If you want to keep a copy of this class around by holding onto it in a variable after a command completes, call EnsurePrivateCopy to make sure that this class is not tied to the document. You can call this function as many times as you want.

Determines whether the specified object is equal to the current object.

If the mesh has SurfaceParameters, the surface is evaluated at these parameters and the mesh geometry is updated.

Explode the mesh into sub-meshes where a sub-mesh is a collection of faces that are contained within a closed loop of "unwelded" edges. Unwelded edges are edges where the faces that share the edge have unique mesh vertices (not mesh topology vertices) at both ends of the edge.

Suggests an extension of a selection set by using information related with topology and alignment.

Suggests an extension of a face selection set by using information related with topology and alignment.

Extracts, or removes, non-manifold mesh edges.

Given a starting "naked" edge index, this function attempts to determine a "hole" by chaining additional naked edges together until if returns to the start index. Then it triangulates the closed polygon and either adds the faces to the mesh.

Attempts to determine "holes" in the mesh by chaining naked edges together. Then it triangulates the closed polygons adds the faces to the mesh.

Passively reclaims unmanaged resources when the class user did not explicitly call Dispose().

Reverses the direction of the mesh.

Reverses the direction of the mesh.

Bounding box solver. Gets the world axis aligned bounding box for the geometry.

Aligned Bounding box solver. Gets the plane aligned bounding box.

Aligned Bounding box solver. Gets the world axis aligned bounding box for the transformed geometry.

Aligned Bounding box solver. Gets the plane aligned bounding box.

Call this method to get cached texture coordinates for a texture mapping with the specified Id.

Returns cached texture coordinate set based on the texture. Make sure to set up cached texture coordinates for all textures in the material first by calling SetCachedTextureCoordinatesFromMaterial(RhinoObject rhinoObject, Rhino.DocObjects.Material material) If this function returns null then there are no texture coordinates available.

Serves as the default hash function.

Returns an array of Boolean values equal in length to the number of vertices in this mesh. Each value corresponds to a mesh vertex and is set to true if the vertex is not completely surrounded by faces.

Returns all edges of a mesh that are considered "naked" in the sense that the edge only has one face.

Retrieves the count of items that GetNgonAndFacesEnumerable will provide.

Retrieves a complete enumerable, i.e., one that provides an iterator over every face that is present, no matter if defined as a triangle, a quad, or a strictly over-four-sided ngon.

Populates a System.Runtime.Serialization.SerializationInfo with the data needed to serialize the target object.

Constructs the outlines of a mesh projected against a plane.

Constructs the outlines of a mesh. The projection information in the viewport is used to determine how the outlines are projected.

Constructs the outlines of a mesh.

Retrieves a partition. See CreatePartitions(Int32, Int32) for details.

Gets the intersections of this mesh with itself.

Gets the Type of the current instance.

Allows to obtain unsafe pointers to the underlying unmanaged data structures of the mesh.

Gets user string from this geometry.

Gets a copy of all (user key string, user value string) pairs attached to this geometry.

Attempts to "heal" naked edges in a mesh based on a given distance. First attempts to move vertices to neighboring vertices that are within that distance away. Then it finds edges that have a closest point to the vertex within the distance and splits the edge. When it finds one it splits the edge and makes two new edges using that point.

Invalidates all cached texture coordinates. Call this function when you have made changes that will affect the texture coordinates on the mesh.

Returns true if every mesh "edge" has at most two faces.

Gets a value indicating whether or not the mesh is manifold. A manifold mesh does not have any edge that borders more than two faces.

Determines if a point is inside a solid mesh.

Determines if an object is valid. Also provides a report on errors if this object happens not to be valid.

If possible, converts the object into a form that can be accurately modified with "squishy" transformations like projections, shears, an non-uniform scaling.

Moves face edges of an open mesh to meet adjacent face edges. The method will first try to match vertices, and then then it will try to split edges to make the edges match.

Creates a shallow copy of the current Object.

Computes an estimate of the number of bytes that this object is using in memory.

Merges adjacent coplanar faces into single faces.

Merges adjacent coplanar faces into single faces.

Clear local cache on non constant calls

Evaluate a mesh normal at a set of barycentric coordinates.

Evaluate a mesh normal at a set of barycentric coordinates. Barycentric coordinates must be assigned in accordance with the rules as defined by MeshPoint.T.

Makes a new mesh with vertices offset a distance in the opposite direction of the existing vertex normals. Same as Mesh.Offset(distance, false)

Makes a new mesh with vertices offset a distance in the opposite direction of the existing vertex normals. Optionally, based on the value of solidify, adds the input mesh and a ribbon of faces along any naked edges. If solidify is false it acts exactly as the Offset(distance) function.

Makes a new mesh with vertices offset a distance along the direction parameter. Optionally, based on the value of solidify, adds the input mesh and a ribbon of faces along any naked edges. If solidify is false it acts exactly as the Offset(distance) function.

Makes a new mesh with vertices offset a distance along the direction parameter. Optionally, based on the value of solidify, adds the input mesh and a ribbon of faces along any naked edges. If solidify is false it acts exactly as the Offset(distance) function. Returns list of wall faces, i.e. the faces that connect original and offset mesh when solidified.

Performs some memory cleanup if necessary

Creates a single mesh face from the given input. The new mesh will be apppended to this mesh.

Evaluate a mesh at a set of barycentric coordinates.

Evaluates a mesh at a set of barycentric coordinates. Barycentric coordinates must be assigned in accordance with the rules as defined by MeshPoint.T.

Gets a polyline approximation of the input curve and then moves its control points to the closest point on the mesh. Then it "connects the points" over edges so that a polyline on the mesh is formed.

Pulls a collection of points to a mesh.

Quad remesh this mesh.

Quad remesh this mesh.

Quad remesh this mesh asynchronously.

Quad remesh this mesh asynchronously.

Quad remesh this mesh asynchronously.

Create QuadRemesh from a Brep Set Brep Face Mode by setting QuadRemeshParameters.PreserveMeshArrayEdgesMode

Create Quad Remesh from a Brep

Quad remesh this Brep asynchronously.

Quad remesh this Brep asynchronously.

Removes mesh normals and reconstructs the face and vertex normals based on the orientation of the faces.

Reduce polygon count

Reduce polygon count

Reduce polygon count

Reduce polygon count

Reduce polygon count

Reduce polygon count

Updates the Mesh data with the information that was stored via the MeshUnsafeLock.

Analyzes some meshes, and determines if a pass of CreateFromIterativeCleanup would change the array.

All available cleanup steps are used. Currently available cleanup steps are:

- mending of single precision coincidence even though double precision vertices differ.

- union of nearly identical vertices, irrespectively of their origin.

- removal of t-joints along edges.

Rotates the object about the specified axis. A positive rotation angle results in a counter-clockwise rotation about the axis (right hand rule).

Scales the object by the specified factor. The scale is centered at the origin.

Set cached texture coordinates using the specified mapping.

Sets up cached texture coordinate set for each texture in the material. Textures in the Material define which mapping channels are used and the RhinoObject defines what texture mapping is used for each mapping channel. After this method is called all necessary texture coordinate sets are cached and correct texture coordinates for each texture can be fetched using GetCachedTextureCoordinates(RhinoObject rhinoObject, Rhino.DocObjects.Texture texture) If any texture coordinates are already cached they will not be re-computed.

If the mesh does not have surface evaluation parameters, has texture coordinates, and the surface parameters can be set in a way so the existing texture coordinates can be computed from the surface parameters, then this function sets the surface parameters. This is useful when meshes that have texture coordinates and do not have surface parameters want to set the surface parameters in a way so that the texture mapping of type TextureMappingType.SurfaceParameters will restore the texture coordinates.

Set texture coordinates using given mapping and applying given transform. Set lazy to false to generate texture coordinates right away.

Set texture coordinates using given mapping and applying given transform. Set lazy to false to generate texture coordinates right away.

Attach a user string (key,value combination) to this geometry.

Returns a ShrinkWrapped mesh or null when a mesh was not created or error.

Creates a unified ShrinkWrap mesh from a collection of input meshes. Returns null on error or failure.

Creates a unified ShrinkWrap mesh from a point cloud returns null on error or failure

Returns a ShrinkWrapped mesh or null when a mesh was not created or error.

Creates a unified ShrinkWrap mesh from a collection of GeometryBase objects. returns null or error on failure

Smooths a mesh by averaging the positions of mesh vertices in a specified region.

Smooths a mesh by averaging the positions of mesh vertices in a specified region.

Smooths a mesh by averaging the positions of mesh vertices in a specified region.

Smooths part of a mesh by averaging the positions of mesh vertices in a specified region.

Smooths part of a mesh by averaging the positions of mesh vertices in a specified region.

Determines orientation of a "solid" mesh.

Split a mesh with a collection of meshes. Suggestion: upgrade to overload with tolerance. Does not split at coplanar intersections.

Split a mesh with another mesh. Suggestion: upgrade to overload with tolerance.

Split a mesh by an infinite plane.

Split a mesh with a collection of meshes.

Split a mesh with a collection of meshes.

Splits up the mesh into its unconnected pieces.

Splits a mesh by adding edges in correspondence with input polylines, and divides the mesh at partitioned areas. Polyline segments that are measured not to be on the mesh will be ignored.

Splits a mesh by adding edges in correspondence with input polylines, and divides the mesh at partitioned areas. Polyline segments that are measured not to be on the mesh will be ignored.

Subdivides the faces of the mesh.

Subdivides specific faces of the mesh.

Create a JSON string representation of this object

Returns a string that represents the current object.

Transforms the geometry. If the input Transform has a SimilarityType of OrientationReversing, you may want to consider flipping the transformed geometry after calling this function when it makes sense. For example, you may want to call Flip() on a Brep after transforming it.

Translates the object along the specified vector.

Translates the object along the specified vector.

Attempts to fix inconsistencies in the directions of mesh faces in a mesh. This function does not modify mesh vertex normals, it rearranges the mesh face winding and face normals to make them all consistent. Note, you may want to call Mesh.Normals.ComputeNormals() to recompute vertex normals after calling this functions.

Attempts to fix inconsistencies in the directions of mesh faces in a mesh. This function does not modify mesh vertex normals, it rearranges the mesh face winding and face normals to make them all consistent. Note, you may want to call Mesh.Normals.ComputeNormals() to recompute vertex normals after calling this functions.

Makes sure that faces sharing an edge and having a difference of normal greater than or equal to angleToleranceRadians have unique vertices along that edge, adding vertices if necessary.

Adds creases to a smooth mesh by creating coincident vertices along selected edges.

Ensures that faces sharing a common topological vertex have unique indices into the MeshVertexList collection.

Compute volume of the mesh.

Makes sure that faces sharing an edge and having a difference of normal greater than or equal to angleToleranceRadians share vertices along that edge, vertex normals are averaged.

Constructs new mesh from the current one, with displacement applied to it.

Constructs new mesh from the current one, with edge softening applied to it.

Constructs new mesh from the current one, with shut lining applied to it.