Create contour lines
Ribbon: Topoplan – Relief> 
Constructing Contours
Menu: Ground – Elevation > 
Constructing Contours
Toolbar: Elevation > Constructing Contours
Command line: NG_CREATE_CONTOUR_LINE
Constructing contours. Contour lines are constructed on the base of Submesh or Polyfacemesh objects
Contours are divided into several types:
- Intermediate contour lines;
- Index contour lines;
- Supplementary contour lines (semi-contours). Are built on half of section of intermediate contour lines;
- Auxiliary contour lines. Are built with an arbitrary section, the value of which is set by the Interval parameter.
The command options are set on the Properties toolbar.
Common parameters for all contour lines:
| _.Delete existing contours | If contours are present in a drawing and they should be constructed anew – specify Yes. When you specify No, old contours are preserved. |
|---|---|
| Create contours layer | If you specify Yes, new contours will be created in the new Contour lines layer. In case of No , contours will be created in 0 layer. |
| Contours smoothing |
|
| Smoothness level | The higher the value, the smoother the contour lines will be. The parameter is displayed when the Bezier Interpolation value is set for the Contours smoothing parameter. |
| Avoid contours crossing | It is recommended to specify Yes, so that in case of complex relief not to build crossing contours. But this slows down the construction of contours, and in case of a smooth relief, it’s better not to enable this parameter. The parameter is displayed when the Bezier Interpolation value is set for the Contours smoothing parameter. |
Specific options for each type of contour lines:
| Section height | Parameter for Intermediate contour lines type of contours. It is set in meters depending on the scale of the created plan. |
|---|---|
| Contour interval | Parameter for Index contour lines and Auxiliary contour lines type of contours. Section height. It is set in meters depending on the scale of the created plan. |
| Drawing | Parameters for Supplementary contour lines and Auxiliary contour lines type of contours. If you specify No – this type of contour lines will not be built. All – will be built for the entire mesh. Specify area – after applying the parameters, by the cursor specify the area inside of which these contours will be built. |
Command prompt:
Apply changes [Yes/No/Save/saveDefault] :
- Yes – contours will be built with the current settings.
- No – if settings have been changed, they are not saved. Contours will be built with the settings that were displayed immediately after running the command.
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