Tessellate (TessellatorFilter)
Tessellate nonlinear curves, surfaces, and volumes with lines, triangles, and tetrahedra.
The Tessellate filter tessellates cells with nonlinear geometry and/or scalar fields into a simplicial complex with linearly interpolated field values that more closely approximate the original field. This is useful for datasets containing quadratic cells.

PropertyDescriptionDefault Value(s)Restrictions
Chord Error
(ChordError)
This property controls the maximum chord error allowed at any edge midpoint in the output tessellation. The chord error is measured as the distance between the midpoint of any output edge and the original nonlinear geometry. 0.001  
Field Error
(FieldError2)
This proeprty controls the maximum field error allowed at any edge midpoint in the output tessellation. The field error is measured as the difference between a field value at the midpoint of an output edge and the value of the corresponding field in the original nonlinear geometry.    
Input
(Input)
This property specifies the input to the Tessellate filter.  

The selected object must be the result of the following: sources (includes readers), filters.

The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData, vtkDataSet, vtkUnstructuredGrid.

 
Maximum Number of Subdivisions
(MaximumNumberOfSubdivisions)
This property specifies the maximum number of times an edge may be subdivided. Increasing this number allows further refinement but can drastically increase the computational and storage requirements, especially when the value of the OutputDimension property is 3. 3

The value must be greater than or equal to 0 and less than or equal to 8.

 
Merge Points
(MergePoints)
If the value of this property is set to 1, coincident vertices will be merged after tessellation has occurred. Only geometry is considered during the merge and the first vertex encountered is the one whose point attributes will be used. Any discontinuities in point fields will be lost. On the other hand, many operations, such as streamline generation, require coincident vertices to be merged. Toggle whether to merge coincident vertices. 1

Only the values 0 and 1 are accepted.

 
Output Dimension
(OutputDimension)
The value of this property sets the maximum dimensionality of the output tessellation. When the value of this property is 3, 3D cells produce tetrahedra, 2D cells produce triangles, and 1D cells produce line segments. When the value is 2, 3D cells will have their boundaries tessellated with triangles. When the value is 1, all cells except points produce line segments. 3

The value must be greater than or equal to 1 and less than or equal to 3.