external_edges

Synopsis

extract external edges of a field to reveal inside objects

Input Port

in_field	Mesh
ui_parent	user interface parent object

Parameters

max edge angle

UIslider

maximum angle between faces

Output Port

out_fld	Mesh + Node_Data
out_obj	output renderable object

Description

external_edges produces a wireframe representation of the outside of an unstructured mesh. You use it when you want to see objects produced by other modules that are inside an unstructured mesh (isosurfaces, streamlines, probes, and so on) while still being able to see the enclosing skeletal shape of the mesh.

Input

in_field

The input need only contain a mesh of any sort. Unstructured meshes pay attention to the max edge angle UIslider using DVext_edge to produce their picture. Structured meshes (Mesh_Struct, Mesh_Rect, and so on) cause DVbounds to be used, generating a simple hull of the mesh.

.

ui_parent

A port to connect to a user interface object that contains the macro's widgets. By default, it is connected to the default user interface object in the application in which the macro is instanced. (This default connection is not drawn.)

Parameters

max edge angle

UIslider. A float slider that controls the accuracy of the boundary representation on the base of the angle between two adjoining faces in unstructured meshes. All edges that have an angle less than this value are represented in the output field. The range is 0.0 to 180.0. The angle used is calculated as edge_angle*3.14/180.0 . The default is 5.0.

This parameter is ignored in structured meshes.

Output Port

out_fld

The output is a field containing a new unstructured Mesh of cell type Line representing the input mesh's exterior. If Node_Data was present in the input field, this output field also contains a reference to that Node_Data.

out_obj

This is a renderable version of the output field.

Example

Libraries.Examples.Visualization.Advect
v/dv_examp/advect.v
Libraries.Examples.Visualization.Cut
v/dv_examp/cut.v
Libraries.Examples.Visualization.Isosurface
v/dv_examp/isos.v
Libraries.Examples.Visualization.Probe
v/dv_examp/probe.v
Libraries.Examples.Visualization.Stream
v/dv_examp/stream.v
Libraries.Examples.Visualization.Glyph_Interp
v/dv_examp/glh_intp.v

File

v/modules.v

See also related modules

bounds

external_faces