Positioning Form

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Positioning Form

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Introduction

The Setup Position form (Positioning Form) provides a consistent method for defining vertical and horizontal positioning in Model Viewer. It is used in multiple locations (wherever a position needs to be set by the user) such as Extrusions, Object Groups, Linemarking, Sight Distance, etc.

The details of the form as covered here to prevent duplication across multiple help topics.

The form enables full positioning of what is being added:

Horizontal

Position can be by selection in the drawing, by alignment or using String codes

When an alignment or String Code/s is/are used, the Calculate Rotation can be applied to set a rotation to the inserted object

Vertical

Users can specify an elevation, reference a surface or a String (elevations interpolated between codes on the string)

Dynamic reference will ensure the object updates vertical positioning when Model Viewer is refreshed.

The horizontal position can be independently established compared with the vertical position. This allows for elevations to be relative to, say, the centreline of a road and the horizontal position to be relative to, say, the left side back of kerb.

Details

When Setup Position is selected the following form is displayed:

Horizontal
Set up the horizontal positioning of the object

   Type
Sets the method for setting up the horizontal position. Options include:

     Specify Location

x,y position is set by the user.

X
Type in an x position or click on the button to select from the drawing

Y Type in a y position or click on the button to select from the drawing

Rotation (optional)
The rotation of the item can be set to an alignment in the drawing

   Alignment
Select alignment from the dropdown or use the pick button to enable selection from the drawing

Added Angle
Type an angle in degrees for additional rotation

     Reference Alignment

Position is set relative to an alignment

Alignment
Select alignment from the dropdown or use the pick button to enable selection from the drawing

Chainage
Distance along the alignment. Use the pick butotn to select from teh drawing

Offset
Type in an offset from the alignment

Added Angle
Orientation will be taken from the alignment if 'Calculate Rotation' is ticked on. This adds an angle, in degrees, to the item



Locates the item midway between two alignments in the drawing

Alignment 1
First alignment for calculating midway point. Use pick button to select from the drawing.

Alignment 2 Second alignment for calculating midway point. Use pick button to select from the drawing.

Chainage Distance along the first alignment. Distance is measured perpendicular to the first alignment at this point, and the midway point calculated. Use pick button to select from the drawing.

Added offset Type in a value to move along the perpendicular line, -ve left or and +ve right of the midway point

Added angle Orientation will be taken from the alignment if 'Calculate Rotation' is ticked on. This adds an angle, in degrees, to the item

     Reference String (code)

Uses a Code for the horizontal position

String
Select a designed string

Code Select a code along the String to use for the horizontal position

Chainage
Distance along the first alignment. Distance is measured perpendicular to the first alignment at this point, and the midway point calculated. Use pick button to select from the drawing.

Added offset Type in a value to move along the perpendicular line, -ve left or and +ve right of the midway point

Added angle Orientation will be taken from the alignment if 'Calculate Rotation' is ticked on. This adds an angle, in degrees, to the item

     Reference String (midway two codes)

Finds the midpoint between two codes on a String (such as the centreline and left edge of road) for the position

String
Select a designed string

Code 1 First code for calculating position

Code 2 Second code for calculating position. Midpoint is found between the two codes at the selected chainage.

Chainage
Distance along the first alignment. Distance is measured perpendicular to the first alignment at this point, and the midway point calculated. Use pick button to select from the drawing.

Added offset Type in a value to move along the perpendicular line, -ve left or and +ve right of the midway point

Added angle Orientation will be taken from the alignment if 'Calculate Rotation' is ticked on. This adds an angle, in degrees, to the item

     Reference 2D Polyline

Finds the midpoint between two codes on a String (such as the centreline and left edge of road) for the position

Polyline
Use the Pick icon to select a polyline from the drawing. The polyline 'handle' will be displayed once selected.

Chainage (Station) Type in a value or use the Pick icon to select in the drawing.

Offset Type in a value or use the Pick icon to select in the drawing.

Added angle Orientation will be taken from the polyline if 'Calculate Rotation' is ticked on. This adds an angle, in degrees, to the item

     Reference 3D Polyline

Positions a point along a 3D polyline.

Polyline
Use the Pick icon to select a polyline from the drawing. The polyline 'handle' will be displayed once selected.

Chainage (Station) Type in a value or use the Pick icon to select in the drawing.

Added angle Orientation will be taken from the polyline if 'Calculate Rotation' is ticked on. This adds an angle, in degrees, to the item

     Reference COGO Point

Matches the insertion point of a COGO Point

Cogo Point
Use the pick button to select a COGO point from the drawing. The unique ID and point number will be displayed

Added Angle Type in a rotation relative to the Block Rotation on the reference COGO Point

Dynamic Reference
Tick on to update horizontal position when the source reference item changes

Calculate Rotation
Tick on to apply rotation based on the selected reference item (alignment, string, code)

Vertical
Set up the vertical positioning of the object

Type
Sets the method for setting up the elevation of the object. Options include:

     Specify Elevation

Type in an elevation

Level
Type in an elevation for the item

     Reference Surface

Use a surface for elevations

Surface
Select a surface using the picklist

Added Level Type in a value above or below the selected surface

     Reference String (C.L.)

Uses the design elevations at the centreline of a selected string

String
Select the string or use the pick item to select from the drawing

Added Level Type in a value above or below the selected string

Grade (%) Type in a grade (%) to apply from the reference string, , measured perpendicular to the string direction

     Reference String (Code)
Select the Code of a String for the elevation.

String
Select the design string or use the pick button to select from the drawing.

Code Select the design code for the elevations

Added Level Type in a value above or below the selected string code

Grade (%) Type in a grade to apply, measured perpendicular to the string direction

     Reference String (interpolate)
This method uses the Horizontal Position and finds the nearest sampled design cross section of the selected String for elevations. Elevations are calculated at the offset determined by the Horizontal Position.

String Select the design string or use the pick button to select from the drawing.

Added Level Type in a value above or below the selected string

Grade (%) Type in a grade to apply from the interpolated section location

     Reference 2D polyline
Select a 2D polyline in the drawing to reference for elevations. The single elevation assigned to the polyline will be used for elevation referencing.

Polyline Use the Pick icon to select a polyline from the drawing. The polyline 'handle' will be displayed once selected.

Added Level Type in a value above or below the selected polyline

Grade (%) Type in a grade to apply, measured perpendicular to the polyline

     Reference 3D Polyline
Select a 3D Polyline to reference for elevations

Polyline Use the Pick icon to select a 3D polyline from the drawing. The polyline 'handle' will be displayed once selected.

Added Level Type in a value above or below the calculated elevation on the selected polyline (location measured perpendicular to the selected object)

Grade (%) Type in a grade to apply, measured perpendicular to the polyline

     Reference COGO Point
Use a COGO Point as a reference for elevations

Cogo Point Use the pick icon to select a COGO point from the drawing. The unique ID and the Point number will be displayed.

Added Level Type in a value above or below the selected COGO Point

Grade (%) Type in a grade to apply from the COGO Point

Dynamic Reference
Tick on to update vertical position when the source reference object changes

OK

Apply and exit.

Cancel

Exit the form without deleting any data.