Matrox RT.X2 User Manual page 61

• (X, Y) Scale Use these controls to make your clip smaller or larger.
Full-screen size is represented as 100%. You can shrink your clip to 0% or
enlarge it to 1000%. Note, however, that by enlarging your clip, the
resolution may become blurry. You can adjust the size controls individually,
or if you select Fixed Aspect Ratio , you only need to adjust the x axis.
Adjusting the percentage on the x and y axes changes your clip's width and
height, respectively.
¦ Note Some effects, like Matrox surface finish, include a Z Scale property
that allows you to adjust the depth of the effect.
• (X, Y, Z) Rotation Use these controls to set the number of times the clip
spins. Each rotation of 360° produces one spin on the selected axis. You can
have positive or negative rotation from -360° to 360°.
• (X, Y, Z) Rotation Center Offset Use the Rotation Center Offset
controls to set the pivot point, or center of rotation, of your clip on the x
(horizontal), y (vertical), and z (depth) axes. When Rotation settings are
applied, your clip spins around this point. You can use positive or negative
pixel values to offset your clip on each axis.
In the illustrations below, notice how different Offset values can affect the
rotation of the cube.
Figure 1: Offset at 0,0,0
In Figure 1, the Offset values are (0,0,0), so the center of rotation for the cube is
where the x, y, and z axes meet. In Figure 2, the Offset value for the x axis is set
to 100, thus moving the cube and the pivot point to the right, so when the cube is
rotated, it has a wider arc when spinning around the axes.
Z
X
Y
Y
Figure 2: Offset at 100,0,0
Transforming your clip
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Z
X