Three-Dimensional Transformation Operations 285
To reduce the rate of change of the parameters
Carry out the trackball or Z-ring operations while
holding down the [SRC] or [TRGT] button.
To restrict the change in the transformation to a
specific axis, press the [X], [Y], or [Z] button, tuning
This enables the trackball and Z-ring operations on the
Chapter
11
DME
Operations
To change the perspective on the image: With the
[TRGT] button selected in step 2, press the [ASP
PERS] button, turning it on.
You can change the perspective of the image on
the X- and Y-axes with the trackball, and change
the distance to the view point with the Z-ring.
To change the skew of the image: With the [SRC]
button selected in step 2, press the [ASP PERS]
button, turning it on, while holding down the
[SHIFT] button.
You can change the skew of the image along the
X- and Y-axes with the trackball.
4
Depending on the axis of the change, operate the
trackball and Z-ring as follows.
•
To change on the X-axis, rotate the trackball
horizontally.
Parameter values increase as you rotate to the right,
and decrease as you rotate to the left.
•
To change on the Y-axis, rotate the trackball
vertically.
Parameter values increase as you rotate upward, and
decrease as you rotate downward.
•
To change on the Z-axis, rotate the Z-ring.
Parameter values increase as you rotate clockwise,
and decrease as you rotate counterclockwise.
However, when you have pressed the [LOC XYZ]
button to move the image, Z-axis parameters
increase as you rotate counterclockwise, and
decrease as you rotate clockwise.
Functions assignable to trackball and Z-ring operations
Rotate
image on
Y-axis
(Spin
mode)
Rotate
image on
X-axis
(Spin
mode)
Rotate
image on
Z-axis
(Spin
mode)
Change
aspect
ratio on X-
axis
Change
aspect
ratio on Y-
axis
Change
aspect
ratio on X-
and Y-
axes
simultane-
ously
Shift view
point on
X-axis
Shift view
point on Y-
axis
Change
distance
from view
point to
image
Change
aspect
ratio on X-
and Y-
axes
simultane-
ously
Three-Dimensional Parameter
Display
You can check the values of the three-dimensional
parameters in the DME menu.