Genicom GEK 00031B manual Decrvec, Ps1 Action, Ps1 Upper Left Upper Right Lower Left Lower Right

DECRVEC	Draw Relative Vector: Draws a vector starting at the active position.
	Source: Application	Destination: Level 3 Extension
	Format
	CSI Ps1 Pn2 Pn3 SP
	Description

The selective parameters for Ps1 are as follows:

Ps1	Action
0	Draws an X (horizontal) line to the right.
1	Draws a Y (vertical) line down.
2	Draws an X (horizontal) line to the left.
3	Draws a Y (vertical) line up.

Numeric parameters provide line length and width:

Pn	Meaning
Pn2	Line length n
Pn3	Line width n

The printer interprets the line length and width as pixels, decipoints or centipoints. The unit is selected using the Select Size Unit (SSU) command. The Positioning Unit Mode (PUM) setting does not affect the unit selected.

The starting point of the line is the current position.

X lines are horizontal with respect to the intended reading page orientation, and Y lines are vertical with respect to the intended reading page orientation.

The DECRVEC command does not change the active position. It is not affected by the First Character Flag.

Since a vector has length and width, it is considered a filled rectangle. The rectangle is not centered on the endpoints. A vector drawn from position (X,Y), with a length of L = (Pn2 - 1) and a width of W = (Pn3 - 1), has the four corners listed in the following table.

Ps1	Upper Left	Upper Right	Lower Left	Lower Right
0	X,Y	X+L,Y	X,Y+W	X+L,Y+W
1	X,Y	X+W,Y	X,Y+L	X+W,Y+L
2	X-L,Y	X,Y	X-L,Y+W	X,Y+W
3	X,Y-L	X+W,Y-L	X,Y	X+W,Y

Error Handling

Relative vectors may extend beyond the limit bounds (left right, top, and bottom margins). If the vector extends beyond the printable area, it is clipped at the edge of the printable area.

Chapter 8. PPL3 Plus Emulation 218 GEK-00029B