Pitney Bowes MapInfo Vertical Mapper - Manual (Page 193)

Chapter 12: Creating 3D Views Using GridView
User Guide
191
The Set Viewing Mode section enables you to determine the location of the viewing position in
geographic space. There are three ways in which this location can be defined and, depending on
which mode is chosen, different settings will be available on the Viewing tab. The default is the From
and To mode.
• The From and To mode enables you to specify the x- and y- coordinates of where the viewer is
standing in the scene and the x- and y- coordinates of the location the viewer is looking towards.
You can also specify how far above or below the grid surface these two locations are. In other
words, you specify the x-, y- and z- coordinates of where the viewer is looking from and the
x-, y- and z- coordinates of where the viewer is looking towards (see the next figure). These
locations are entered into the Looking From and Looking To sections of the Viewing tab. Values
must be expressed in the units determined by the coordinate system of the master grid.
This diagram illustrates the From and To viewing mode.
The From Your Location mode requires you to specify the x- and y-coordinates of where the viewer
is standing, as well as how far above or below the grid surface this location is. Also, you will need to
specify the direction in which the viewer is looking with respect to true north and the angle from the
horizon plain at which the scene is being viewed (see the next figure). The x-, y- and z- coordinates
are specified in the Looking From section of the dialog box, the view direction is specified in the
Azimuth setting, and the horizon angle is specified in the Inclination setting. These settings are
found in the Angle section of the Viewing tab.
This diagram illustrates the From Your Location viewing mode.
• The To Your Location mode requires you to specify the x- and y-coordinates of where the
viewer is looking towards (focus point), how far above or below the grid surface this location is,
the angle from the horizontal plain at which the scene is being viewed, and the distance between
the viewing location and the location on the grid that is being viewed (see the next figure). The
x-, y- and z- coordinates are specified in the Looking To section of the dialog box, the viewing
direction is specified in the Azimuth setting, and the angle is specified in the Inclination setting.
These settings are found in the Angle section of the Viewing tab.