Three-Dimensional Transformation Operations
Chapter
11
DME
Operations
AXIS LOC (location): When this button is lit, the
trackball moves the rotational axis of the image in the
X-axis and Y-axis directions, and the Z-ring moves the
axis in the Z-axis direction.
ASP PERS (aspect/perspective): When the [SRC] button
is lit, pressing this button enables the trackball to
control the X-axis and Y-axis directions
independently, and the Z-ring controls the X-axis and
Y-axis directions together, to vary the aspect ratio.
When the [SHIFT] button is held down and this button
is pressed, the trackball controls the skew of the image
in the X-axis and Y-axis directions.
When the [TRGT] button is lit, pressing this button
enables the trackball to control the perspective of the
image in the X-axis and Y-axis directions.
The Z-ring controls the distance to the viewpoint.
LOC (location) SIZE: When this button is lit, the Z-ring
controls the image size.
The trackball moves the image in the X-axis and Y-
axis directions.
LOC (location) XYZ: When this button is lit, the trackball
moves the image in the X-axis and Y-axis directions,
and the Z-ring moves the image in the Z-axis direction.
SHIFT: While holding down this button, pressing the
[ASP PERS] button or [ROT] button switches to the
shifted version of the corresponding function.
CLR WORK BUFR (clear work buffer): Press this
button once to clear only the three-dimensional
transform parameters of the information held in the
work buffer. Press twice in rapid succession to clear all
of the parameters, and return to the default state.
ROT (rotation): When this button is lit, the trackball
rotates the image about the X- and Y-axes, and the Z-
ring rotates the image about the Z-axis.
Pressing this while holding down the [SHIFT] button
enables rotation of the image in the “Spin” mode. The
trackball and Z-ring operate in the same manner.
X, Y, Z: These restrict which axes the trackball and Z-ring
can control. You can select more than one.
When one of these buttons is selected, you can enter
the parameter value for the corresponding axis using
the numeric keypad control block.
CTR (center): Pressing this button changes the values of
the three-dimensional parameters currently controlled
by the trackball and Z-ring to the closest detent values.
Pressing twice in rapid succession returns the
parameter values to their defaults.
Transforming an image in three-
dimensional coordinate space
1 With the region selection buttons, select the target
channel of the operation.
You can press several of the buttons simultaneously to
select several channels. In this case, the button that you
pressed first lights in green, while buttons pressed
subsequently light in amber.
2
With the function assignment buttons, select the three-
dimensional coordinate space in which to perform the
transformation.
LOCAL button: Selects local coordinate space.
GLB button: Selects global coordinate space. You
can select this button and the [LOCAL] button
simultaneously.
SRC button: Selects the source coordinate space.
TRGT button: Selects the target coordinate space
([SRC] and [TRGT] cannot be selected at the same
time).
3
Press the button for the operation you want to do,
turning it on, to select the transformation mode.
The trackball and Z-ring are assigned to the selected
three-dimensional coordinate space transformation
mode.
To move the image: Press the [LOC XYZ] button,
turning it on.
You can move the image on the X- and Y-axes
with the trackball and move it on the Z-axis with
the Z-ring. Pressing the [LOC SIZE] button
instead of the [LOC XYZ] button, turning it on,
makes it possible to move the image on the X- and
Y-axes.
To rotate the image: Press the [ROT] button, turning
it on.
You can rotate the image on the X- and Y-axes
with the trackball and rotate it on the Z-axis with
the Z-ring.
To rotate the image in Spin mode, press the [ROT]
button, turning it on, while holding down the
[SHIFT] button. You can operate in the same way
with the trackball and Z-ring.
To move an axis of rotation: With the [SRC] button
selected in step 2, press the [AXIS LOC] button,
turning it on.
You can move the axis of rotation of the image on
the X- and Y-axes of the image with the trackball,
and on the Z-axis with the Z-ring.
To magnify or shrink the image: Press the [LOC
SIZE] button, turning it on.
You can magnify and shrink the image with the Z-
ring. Rotate counterclockwise to shrink, and
clockwise to magnify.
To change the aspect ratio of the image: With the
[SRC] button selected in step 2, press the [ASP
PERS] button, turning it on.
You can change the aspect ratio independently on
the X- and Y-axes with the trackball, and change it
simultaneously on both the X- and Y-axes with the
Z-ring.
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