Define ViewPoint Dialog
The View Point Dialog is used to define, modify, and select View
- Defined View Points
- The top row of the dialog
is a list of Defined View Points. From 1 to 10
buttons are shown. Items cannot be selected in this list.
- Define / Modify
- The next row
is a collection of toggle buttons from which a View Point to
Modify is selected. The selection on popup is the
current View Point.
- The current View Point is shown in
the text fields in both
coordinates. New values may be typed using one of the coordinate
systems. The new values are not immediately reflected in the
other coordinate system.
- The name appears in the View Point Retrieve
Menu. It may be blank.
- The viewpoint can be rotated Up or
Down, or Right or
Left, by the number of degrees specified in the
Angle combo box.
The user may select a predefined value from the list or select
Other and type a value in the edit field.
The rotation is accomplished by adding or subtracting the given
amount from Phi or Theta.
(The proper angle does not always result when addition or subtraction
takes the angle past a multiple of pi/2
The combo box displays the current value of the rotation angle.
- Selecting the Rotate button changes
the current viewpoint; the Position
fields are updated after a rotation is made.
- Causes the changes to take effect and dismisses
- Dismisses the dialog and makes no changes.