
You can move the GL coordinate system to any point within the PCL picture
frame by designating the number of units called a coordinate.
The default location of the GL coordinate system is the lower-left corner of the
PCL picture frame.
The origin point (0,0) in Figure 3.40 can be changed by using the IP or IR
command. The SC command sets the coordinate system.
Note:
Coordinate pairs are in parentheses (X,Y) for clarity, but you should not use the
parentheses in your program.
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