Helper Options for Dynamic Line¶
Use this dialog to enable dynamic labeling and helper lines when editing lines.
Where do I find the dialog?¶
On the toolbox in terrain model drawing, select the Helper Options for Dynamic Line... icon.
Using the dialog¶
The available options depend on the line and presentation you are working with.
Dynamic Labeling¶
Break Angle¶
The break angle is always shown in the result line, except where there are correct roundings.
When you start a new line at a free point, the break angle is relative to the mathematical X-axis. If you start by snapping to a line, the line will be the mathematical X-axis.
Element Values¶
In plan, these are values for length, radius, and clothoid.
For horizontal curves in the SFI model, you may have selected a design class with minimum requirements for element values. If a standard requirement is violated, the element is drawn in red. A pink color code is used for the entire line if the selected element values for radius and clothoid cannot be resolved.
In the long section, this applies to values for radius and gradient.
In the cross section, this applies to values for width and slope of the lines. Width is shown above the line, slope below the line.
Helper Geometry¶
With this option, you can automatically set up helper lines when inserting new points or editing existing points. Note that the program only draws the helper lines even if snapping is not active. The icons to activate snapping are found on the toolbar. If snapping is not active, there is no point in using dynamic helper lines. Furthermore, helper lines are only drawn at points with breaks.
Circle and Relative Lines in Plan¶
You can set up a helper circle and relative helper lines. You get a relative line on the left and one on the right side of the extension of the previous line. Check Dynamic Helper Lines and enter values in the Circle Radius and Relative Angle fields. If the values for the helper circle and relative helper lines are 0, you only get a helper line in the extension of the line.
Gradient in Long Section¶
In the SFI model, you may have selected a design class for the road. Then the maximum gradient for the vertical curve will be defined. Helper lines are automatically drawn to show the area you must stay within to meet the maximum gradient in the long section. If you go outside this area, the dynamic line is drawn in red.
Physical and Theoretical Layers¶
In the long and cross section, the options for Circle Radius and Relative Angle are grayed out. This means you can only get helper lines in the extension of both lines (surfaces).
The table below summarizes the different options:
| Editing and Line Type | Dynamic Text | Helper Geometry |
|---|---|---|
| Break Angle | Element Values | |
| Editing in Plan | ||
| Application Layer | x | x |
| Horizontal Curvature | x | x |
| Construction Pit, Intersection, and Extra Line | x | x |
| Line Definition Data | x | x |
| Editing in Long Section | ||
| Line Definition Data | x | |
| Vertical Curvature | x | x |
| Physical Layers | x | |
| Editing in Cross Section | ||
| Physical Layers | x | |
| Theoretical Layers | x |