SMS:2D Mesh Polygon Properties: Difference between revisions

From XMS Wiki
Jump to navigationJump to search
No edit summary
No edit summary
Line 7: Line 7:
* '''Mesh Type''' – Specify the mesh generation algorithm. The following options are available:
* '''Mesh Type''' – Specify the mesh generation algorithm. The following options are available:
<blockquote>
<blockquote>
** [[SMS:Patch|Patch]]
* [[SMS:Patch|Patch]]
** [[SMS:Paving|Paving]]
* [[SMS:Paving|Paving]]
** [[SMS:Paving#Scalar Paving Density|Scalar Paving Density]].
* [[SMS:Paving#Scalar Paving Density|Scalar Paving Density]].
</blockquote>
</blockquote>
* '''Bathymetry Type''' &ndash; Specify the bathymetry source for assignment to the mesh. The following options are available:
* '''Bathymetry Type''' &ndash; Specify the bathymetry source for assignment to the mesh. The following options are available:
<blockquote>
<blockquote>
** Constant &ndash; assignes a constant elevation value to all nodes in the mesh
* Constant &ndash; assignes a constant elevation value to all nodes in the mesh
** Scatter Set &ndash; [[SMS:Scatter Interpolation|interpolates]] elevation values from the specified [[SMS:Scatter Module|scatter set]]
* Scatter Set &ndash; [[SMS:Scatter Interpolation|interpolates]] elevation values from the specified [[SMS:Scatter Module|scatter set]]
** Existing Mesh &ndash; interpolates elevation values from an existing 2D mesh
* Existing Mesh &ndash; interpolates elevation values from an existing 2D mesh
</blockquote>
</blockquote>
* '''Material''' &ndash; [[SMS:2D Mesh Elements Menu|material type]] to assign to elements created within the polygon
* '''Material''' &ndash; [[SMS:2D Mesh Elements Menu|material type]] to assign to elements created within the polygon
* '''Arc Options''' &ndash; Used to modify the feature vertices along the arc. The arc must be selected in the polygon preview window. The following options are available:
* '''Arc Options''' &ndash; Used to modify the feature vertices along the arc. The arc must be selected in the polygon preview window. The following options are available:
<blockquote>
<blockquote>
** Use Original Vertices
* Use Original Vertices
** Distribute Vertices &ndash; Change the number of vertices along the arc. A bias can be specified rather than distributing the vertices with a constant spacing.
* Distribute Vertices &ndash; Change the number of vertices along the arc. A bias can be specified rather than distributing the vertices with a constant spacing.
</blockquote>
</blockquote>
* '''Node Options''' &ndash; When the mesh type is set to [[SMS:Patch|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:
* '''Node Options''' &ndash; When the mesh type is set to [[SMS:Patch|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:
<blockquote>
<blockquote>
** Split &ndash; The mesh generation algorithm will treat the two arcs meeting at the feature point as separate sides.
* Split &ndash; The mesh generation algorithm will treat the two arcs meeting at the feature point as separate sides.
** Merge &ndash; The mesh generation algorithm will treat the two arcs meeting at the feature point as a single side.
* Merge &ndash; The mesh generation algorithm will treat the two arcs meeting at the feature point as a single side.
** Degenerate Edge &ndash; 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.
* Degenerate Edge &ndash; 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.
</blockquote>
</blockquote>



Revision as of 19:40, 13 December 2013

File:2D Mesh Polygon Prop.jpg
2D Mesh Polygon Properties dialog

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.

To access the 2D Mesh Polygon Properties go to Feature Objects | Attributes. The 2D Mesh Polygon Properties dialog will open. Double-clicking inside a polygon will also bring up the 2D Mesh Polygon Properties.

The following polygon attributes can be set:

  • Mesh Type – Specify the mesh generation algorithm. The following options are available:
  • 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
  • Materialmaterial 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