Casio YA-S10 Setup Guide - Manual (Page 29)

Using Shaping Functions
E-28
Side Correction (Arch)
Center Point Correction
Base And Side Adjustment
Use it for this:
To reduce projected image distortion that occurs when projecting
into a surface that shaped like a convex or concave lens.
How it works:
Points in the center of the top and bottom sides can be concurrently
moved vertically, and points in the center of the left and right sides
can be concurrently moved horizontally. The result produces an
arched shape of the side whose point is moved.
Use it for this:
To adjust to the high point of a convex surface or the low point of a
concave surface when the point is off center. This adjustment is
performed after Side Correction (Arch) is complete.
How it works:
The center point of the projection screen can be moved vertically
and horizontally.
Use it for this:
To reduce projected image distortion that occurs when projecting
into a surface that is shaped like a cylinder.
When Cylinder 1 is selected as the shaping type, vertical adjustment
affects the bases, while horizontal adjustment affects the sides.
When Cylinder 2 is selected as the shaping type, vertical adjustment
affects the sides, while horizontal adjustment affects the bases. (The
nearby screenshot shows the screen when Cylinder 1 is selected.)
How it works:
The four positions of the projected image described below can be
manipulated.
Cylinder 1 (vertical cylinder)
z Upper base: Can be moved vertically.
z Lower base: Can be moved vertically.
z Side vertical center line: Can be moved horizontally.
z Side vertical 1/4 line and vertical 3/4 line: Both can be moved horizontally closer to or further from
the vertical center line. These lines move in conjunction with each other. Moving these lines causes
the curve of the side to change accordingly.
Cylinder 2 (horizontal cylinder)
z Left base: Can be moved horizontally.
z Right base: Can be moved horizontally.
z Side horizontal center line: Can be moved vertically.
z Side horizontal 1/4 line and horizontal 3/4 line: Both can be moved vertically closer to or further
from the horizontal center line. These lines move in conjunction with each other. Moving these lines
causes the curve of the side to change accordingly.