SMS:2D Mesh Polygon Properties

The 2D Mesh Polygon Properties dialog is used to set meshing options for the conceptual model. See Mesh Generation for a discussion of the conceptual modeling approach.

The following polygon attributes can be set:

• Mesh Type - Specify the mesh generation algorithm. The following options are available:
  • Patch
  • Paving
  • Scalar Paving Density.
• Bathymetry Type - Specify the bathymetry source for assignment to the mesh. The following options are available:
  • Constant - assignes a constant elevation value to all nodes in the mesh
  • Scatter Set - interpolates elevation values from the specified scatter set
  • Existing Mesh - interpolates elevation values from an existing 2D mesh
• Material - material type to assign to elements created within the polygon
• Arc Options - Used to modify the feature vertices along the arc. The arc must be selected in the polygon preview window. The following options are available:
  • Use Original Vertices
  • Distribute Vertices - Change the number of vertices along the arc. A bias can be specified rather than distributing the vertices with a constant spacing.
• Node Options - When the mesh type is set to Patch, the node options are used to define the 3 or 4 sides for the patch mesh generation. If a feature point is selected in the polygon preview window, the following options are available:
  • Split - The mesh generation algorithm will treat the two arcs meeting at the feature point as separate sides.
  • Merge - The mesh generation algorithm will treat the two arcs meeting at the feature point as a single side.
  • Degenerate Edge - The mesh generation algorithm will treat the two arcs meeting at the feature point as a "degenerate edge." When using a degenerate edge, the Patching algorithm will require only 3 sides to be defined. This option is only valid for meshes which allow triangular elements. Only one degenerate edge can be specified per feature polygon.

Related Topics

• Feature Objects
• Map Module Menus

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SMS

Modules: Mesh Module · Cartesian Grid Module · Scatter Module · Map Module · GIS Module · Particle Module
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