Select this mode to extrude tunnels using existing Tunnel Information.

Use Tunnel Info Attribute

Select this check box to use the Tunnel Info Attributes of the Input Centrelines to extrude the tunnels.

Select the Tunnel Info Attribute Field that will be used to determine the (Profile, Orientation, Cut Mode, Cut Distance, Cut Threshold, and Cut Equal Parts) attributes of each tunnel.

Tunnel Info

Alternatively, if Tunnels have already been setup (in Setup Tunnels & Profiles), use the drop-down list to select the Tunnel Information of an existing tunnel:

Outputs

Use the drop-downs or click on the ellipses to select one or more Output Layers.

Tip: You can right-click on a folder in the Layer Selection pane to Add a new layer.

Tunnels will be saved to the specified Triangulation layer. Output attributes of the extruded tunnels are Sequence, Length, and Volume.

Click the Delete icon to clear one or more layer or attribute selections.

Additional Outputs

Note: You also have the option of outputting other extruded tunnel geometry into different layers. These additional outputs are Cut Centrelines, Projected Profiles, and Silhouette Polygons.

In this example, singular Tunnel Information has been used to extrude tunnels and the specified attributes have been written to a single Triangulation layer:

Extrude Tunnels: Tunnel Information (Singular Tunnel Info)

In this example, variable Tunnel Information Attributes of the Input Centreline Layer has been used to extrude tunnels and the specified attributes have been written to a single Triangulation layer:

Extrude Tunnels: Tunnel Information (by Centreline Attribute)

Select this mode to extrude tunnels by specifying the individual (Profile, Orientation, Cut Mode, Cut Distance, Cut Threshold, and Cut Equal Parts) components of information needed to extrude the tunnels.

Use Profile Attribute

Select this check box to use the Profile Attribute of the Input Centrelines to set the profile of the tunnels.

Select the Profile Attribute Field that will be used to determine the profile of each tunnel.

Profile

Alternatively, if Tunnels and Profiles have already been setup (in Setup Tunnels & Profiles), use the drop-down list to select a Tunnel Profile:

Use Orientation Attribute

Select this check box to use the Orientation Attribute of the Input Centrelines to set the orientation of the tunnels.

Select the Orientation Attribute Field that will be used to determine the orientation of each tunnel.

Orientation

Alternatively, use the drop-down list to select an Orientation:

Orientation	Description
Auto	The most appropriate profile orientation is chosen based on centreline gradient, direction and cut settings. This is the default option and is the best option for most non-vertical centrelines. Auto will work for purely vertical tunnels but may fail on tunnels that have a mixture of purely vertical segments and segments that are not vertical.
Perpendicular	A profile orientation which is perpendicular to the centreline direction (bearing and grade). Centrelines that change directions have profiles facing a direction based on the previous and next segments.
Gradual	Like Perpendicular except that the profile orientation gradually transitions from the previous to the next orientation for cut segments.
Flat	The profile is always flat on the XY axis. This is the orientation to use for tunnels that are intended to be vertical.
Upright	The profile is always facing directly up with a rotation based on the centrelines bearing.

Use Cut Mode Attribute

Select this check box to use the Cut Mode Attribute of the Input Centrelines to set the cut mode of the tunnels.

Select the Cut Mode Attribute Field that will be used to determine the cut mode of each tunnel.

Cut Mode

Alternatively, use the drop-down list to select a Cut Mode:

Mode	Description
None	Choose this for an access tunnel or shaft which is non-productive.
Distance	Material is cut by a specified Cut Distance.
Equal Parts	Material is cut in a specified a number of Equal Parts.

Use Cut Distance Attribute

Select this check box to use the Cut Distance Attribute of the Input Centrelines to set the cut distance of the tunnels.

Select the Cut Distance Attribute Field that will be used to determine the cut distance of each tunnel.

Cut Distance

Alternatively, enter or use the spin controls to set a Cut Distance (in metres).

Use Cut Threshold Attribute

Select this check box to use the Cut Threshold Attribute of the Input Centrelines to set the cut threshold of the tunnels.

Select the Cut Threshold Attribute Field that will be used to determine the cut threshold of each tunnel.

Cut Threshold

Alternatively, enter or use the spin controls to set a cut threshold (in metres). If the length of the final cut of a tunnel is less than the Cut Threshold, the cut segment is combined with the previous segment.

Use Cut Equal Parts Attribute

When the Cut Mode (above) is Equal Parts, select this check box to use the Cut Equal Parts Attribute of the Input Centrelines to set the cut equal parts value for the tunnels.

Select the Cut Equal Parts Attribute Field that will be used to determine the cut equal parts value for each tunnel.

Cut Equal Parts

Alternatively, when the Cut Mode (above) is Equal Parts, enter or use the spin controls to set a cut equal parts value.

Outputs

Use the drop-downs or click on the ellipses to select one or more Output Layers.

Tip: You can right-click on a folder in the Layer Selection pane to Add a new layer.

Tunnels will be saved to the specified Triangulation layer. Output attributes of the extruded tunnels are Sequence, Length, and Volume.

Click the Delete icon to clear one or more layer or attribute selections.

Additional Outputs

Note: You also have the option of outputting other extruded tunnel geometry into different layers. These additional outputs are Cut Centrelines, Projected Profiles, and Silhouette Polygons.

In this example, individual Tunnel Information components specified in the dialog have been used to extrude the tunnels and the specified attributes have been written to a single Triangulation layer:

Extrude Tunnels: Individual Components (Specified in the dialog)

In this example, variable Tunnel Information Attributes of the Input Centreline Layer has been used to extrude tunnels and the specified attributes have been written to a single Triangulation layer:

Extrude Tunnels: Individual Components (by Centreline Attribute)

Note that choosing components singularly or by attribute is optional for each component, so some tunnel properties could be defined by attribute, while others could be defined singularly in the dialog.