The external edges module produces a wireframe representation of an unstructured cell data mesh. This is generally used to visualize the skeletal shape of the data domain while viewing output from other modules, such as plumes and surfaces, inside the unstructured mesh. It produces a mesh of only the external edges which meet the edge angle criteria for each cell set of a data set. Because each cell set’s external faces are used, there may be edges that are seemingly internal (vs. external). This is especially true when external edges is used subsequent to a plume module on 3D (volumetric) input.
Ports
Direction
Name
Type
Description
Input
Input Field
Field
The field to use for external gridding.
Input
Input Z Scale
Number
The factor for vertical scaling.
Output
Output Field
Field
The external grid field.
Output
Output Z Scale
Number
The factor for vertical scaling.
Output
Output Object
Renderable
A renderable object to display.
Properties
Property
Type
Description
Extraction Method
Choice: Edge Angle, Boundary Edges, Wireframe
The Extraction Method determines how edges are extracted. Edge Angle chooses all edges of cells with an angle greater than specified angle. Boundary Edges extract all edges only used by a single cell, which is useful when doing edges of a surface. Wireframe extracts all external edges of the field.
Max Edge Angle
Double
The Max Edge Angle is defined as the angle between two faces or cells in the model. Setting Max Edge Angle to 0 causes all external cell (element) edges in the model to be visible. Intersections between faces or cells with angles greater than the Max Edge Angle are visible. Exterior model edges are always visible.
Z Scale
Double
The Z Scale is the vertical exaggeration to apply to the display object.