Image Orientation Dialog
The vector (X, Y, Z) is the vertical direction. The default vertical
vector is the Z axis (0, 0, 1). The vector may be in any direction,
i.e., the vertical axis need not coincide with a coordinate axis.
The three principal coordinate directions may be displayed on
the figure with the AXIS
command.
The menu item popups the Image
Orientation
Dialog in which the current vector components
are shown.
- X
Y
Z
- New (X,
Y,
Z)
components may be entered; they need not be normalized to unity.
- Mirror Mode
-
When MIRROR mode is
ON, the image is reflected.
That which appeared on the left side of the picture when
MIRROR is OFF
will appear on the right side when it is ON.
The mode is ON when the
Mirror box is checked on the
Orientation dialog.
The MIRROR mode will usually cause a
vertical reflection as well.
One can use the VERTical vector to
keep things upright: Issue the VERT
command to get the current vertical vector, negate the vector,
and use it as the argument to VERT,
or perform the corresponding operations on the dialog. For example:
-
Sabrina> vert
0.000 0.000 1.000
Sabrina> vert 0 0 -1
- Prevent Distortion
-
A great deal of time can be spent, especially when geometry
TESTing, by imaging the background
when a model does not conform to the square Sabrina plot window.
When Prevent
Distortion is checked,
a ray traced picture can be made in a non-square graphics
window while preserving the aspect ratio of the image.
When unchecked, the image is distorted in a non-square window.
The mode does not work for 2-D plots, line drawings, and particle tracks.
- Apply
- Causes the changes to take effect and dismisses
the dialog.
- Cancel
- Dismisses the dialog and makes no changes.