
B-63423EN/02 USER PROGRAM 14. USER WINDOW PROGRAMS
-95-
14.5 CHARACTER COORDINATE SYSTEM AND GRAPHIC
COORDINATE SYSTEM
The character coordinate system and graphic coordinate system (dot
coordinate system) in user windows are as follows.
1) Character coordinate system
The character coordinate system assumes that X coordinates are
in the horizontal direction and Y coordinates are in the vertical
direction. The X coordinates specify 0 to 79, from left to right.
The Y coordinates specify 0 to 29, from top to bottom.
2) Graphic coordinate system
The graphic coordinate system assumes that X coordinates are in
the horizontal direction and Y coordinates are in the vertical
direction. The X coordinates specify -320 to 319, from left to
right. The Y coordinates specify -232 to 247, from bottom to top.
(0,0)
(0,0)(0,0)
(0,0)
(79,29)
(79,29)(79,29)
(79,29)
247
247247
247
(
((
(0,0
0,00,0
0,0)
))
)
319
319319
319
-320
-320-320
-320
-232
-232-232
-232