DLGRGenerateTIN
DLGRGenerateTIN generates a TIN (Triangulated Irregular Network) DTM (Digital Terrain Model) surface leveraging Rhino's built in meshing functionality with a workflow optimised to generating accurate grading mesh surfaces for landscape design. The workflow based on the input curves on control layers. Refer below for control layers and their purpose.
The following command options are accessed through the hyphenated -DLGRGenerateTIN form:
Mode
Specifies the generation mode.
| Option | Description |
|---|---|
| SinglePass | Performs a single pass mesh generation pass ignoring seams and other secondary mesh modifications. |
| MultiPass | MultiPass forst generates a TIN using the usual grading curves (Boundary, control, batters etc) then it executes a second pass to further refine the mesh with Seams. Use this mode before using DLGRPaintTIN. |
Control Layers
Design Layer Description
warning
Beware that this command replaces geometry on some layers marked as "Generated" (see below). This is by design so it is important that you do not place geometry that is not generated on these layers.
| Layer | Default Path | Description | Generated |
|---|---|---|---|
| Cut | DOCOGrade::Analysis::Cut | Contains mesh cut volume output from DLGRCalculateCutFill | No |
| Fill | DOCOGrade::Analysis::Fill | Contains mesh fill volume output from DLGRCalculateCutFill | No |
| Batter Toe | DOCOGrade::Design::Batter Toe | Identical functionality to a Control curve but will contribute to the generated 2d output as a batter line. | No |
| Batter Top | DOCOGrade::Design::Batter Top | Identical functionality to a Control curve but will contribute to the generated 2d output as a batter line. | No |
| Boundary | DOCOGrade::Design::Boundary | A boundary curve is required to generate a grading surface. It must be a closed curve that does not intersect on the X/Y plane. | No |
| Control | DOCOGrade::Design::Control | A control curve is used to control triangle generation within the boundary curve. | No |
| Seam | DOCOGrade::Design::Seam | Seams allow secondary splitting of the genrated mesh and are useful for splitting meshes at material boundaries. Seams are only applied when using the ~Multipass options is executed. | No |
| Paint | DOCOGrade::Design::Paint | A convenient parent layer under which to place material hatch sublayers used by the DLGRPaintTIN command. | No |
| Trim | DOCOGrade::Design::Trim | Trim boundaries for generated 2d contours. Not currently implmented. | No |
| Hole | DOCOGrade::Design::Hole | A hole curve must be closed and must not intersect itself or any other boundary curve in the X/Y plane. Hole curves should fit within the boundary curve. No triangles will be generated within the hole curve. | No |
| Inner Surface | DOCOGrade::Design::Inner Surface | NURBS surfaces that are to be incorporated into the final grading surface. | No |
| Label Guide | DOCOGrade::Design::Label Guide | Curves on this layer control contour label generation. Guide curves are projected to the world xy plane. Where they intersect the generated 2d contours, a grade label is generated. | No |
| Mass | DOCOGrade::Design::Mass | Use this layer as a generic layer for objects that do not participate directly in the surface generation i.e. walls, furniture, architecture etc. | No |
| Annotation (2d) | DOCOGrade::Generated2d::Annotation | DOCOgrade annotations are automatically added to this layer. | YES |
| Batter Toe (2d) | DOCOGrade::Generated2d::Batter Toe | Generated 2d output from DOCOGrade::Design::Batter Toe. | YES |
| Batter Top (2d) | DOCOGrade::Generated2d::Batter Top | Generated 2d output from DOCOGrade::Design::Batter Top. | YES |
| Contour Major (2d) | DOCOGrade::Generated2d::Contour Major 2d | Major contours are calculated dynamically and projected flat to this layer. Additional smoothing steps are set in document settings. | YES |
| Contour Major Label (2d) | DOCOGrade::Generated2d::Contour Major 2d Label | Major contour labels are calculated dynamically and projected flat to this layer. Control the location of contour labels using curves on layer Label Guide. | YES |
| Contour Minor (2d) | DOCOGrade::Generated2d::Contour Minor 2d | Minor contours are calculated dynamically and projected flat to this layer. Additional smoothing steps are set in document settings. | YES |
| Contour Minor Label | DOCOGrade::Generated2d::Contour Minor 2d Label | Minor contour labels are calculated dynamically and projected flat to this layer. Control the location of contour labels using curves on layer Label Guide. | YES |
| Contour Minor | DOCOGrade::Generated3d::Contour Minor | Minor contours are calculated dynamically. Intervals are set in document settings. | YES |
| Contour Major | DOCOGrade::Generated3d::Contour Major | Major contours are calculated dynamically. Intervals are set in document settings. | YES |
| TIN (Generated) | DOCOGrade::Generated3d::TIN | Generated TIN meshes get created on this layer. Note that objects on this layer will be deleted and recreated whenever DLGRGenerateSurface is executed. | YES |
| TIN (Survey) | DOCOGrade::Survey::TIN | This will typically be the survey TIN surface in it's original form (usually supplied as part of a site survey). | No |
| TIN Off (Survey) | DOCOGrade::Survey::TIN Off | This layer will typically contain triangles extracted from the TIN (Survey) to denote the area that is to be redesigned. An effective aproach is to generate your Boundary curve by duplicating the boundary of this mesh. | No |
tip
DOCOgrade Layer names can be modified in the current document or plugin wide in the respective Document Properties Panel amd Plugin Setting pane.