Note: You have to draw a 3D surface model of the bridge/structure, which is viewed in perspective view. To draw a 3D surface model, run the tool 'Draw 3D Face Model'.

The function will automatically insert a VIEW in your drawing. You will specify a camera position in relation to the centreline. You can also select the direction of view and the focal length of the camera.

Note: You will be prompted for the Road Model, Database (Digital Terrain Model), and Bridge Project if these are not defined in project settings.

MOUS_ICO Menu: Bridge 3D Show Perspective
MOUS_ICO Toolbar: 3D Show Perspective

Command prompts for:

Start station:[m], end station:[m] Enter the station for the view <m>:

Define the start station from which perspective view is desired.

View backwards or Forwards (B/F) <Forwards>:

Define the view direction.

Enter horizontal distance from the road alignment (in m) <default value>:

Define the horizontal distance of viewpoint from the road alignment. The default value is 2.0m.

Enter vertical distance from the road alignment (in m) <default value>:

Define the vertical distance of the viewpoint from the road alignment. The default value is 1.5m (height of a person's eye when in a passenger car).

Enter the focal length (mm) <default value>:

Sight distance.

The function will then generate the specified perspective view of the bridge/structure and command prompts for:

S(Section no)/I(interval)/N(Next)/P(Previous)/H(Hide)/ESC:

S (Section no.):

You can jump to the desired station to have a perspective view at that station. Use this option and define the desired station number.

N (Next)/P (Previous):

You can traverse along your bridge/structure using the option Next and Previous. The function jumps to the next or previous station for a perspective view. The interval of this traversing will be as that defined with the option I (Interval).

I (Interval):

Define the stepping interval of the stations when you traverse along the bridge/structure.

H (Hide):

Functions as Hide in AutoCAD.

ESC:

You can exit the scroll mode. The AutoCAD cursor will reappear.