HPGL2 versus HPGL ???

[TomCee]

Hello:

Can anyone tell me what exactly is the difference between hpgl2 and hpgl?

I believe that hpgl2 simply has an expanded command set. What are these?

Thanks,
Tom

 

[Andrew Rossmann]

[This followup was posted to comp.periphs.printers and a copy was sent to
the cited author.]

Hello:

Can anyone tell me what exactly is the difference between hpgl2 and hpgl?

I believe that hpgl2 simply has an expanded command set. What are these?

There are many extra commands and extensions to commands. A few I can
think of off the top of my head:
Default 0,0 is in the corner instead of the center
extra rotations (180 and 270)
BP (Begin Plot)
QL (Quality Level)
PC (Pen Color)
PW (Pen Width)
PP (Pixel Placement)
LA (Line Attributes)
many others I can't think of right now. The above were the biggest effect
on what I wrote for. Many of the enhancements were to support raster-mode
(laser/inkjet) enhancements that the old vector pen plotters couldn't do.

 

[TomCee]

[This followup was posted to comp.periphs.printers and a copy was sent to
the cited author.]

Hello:

Can anyone tell me what exactly is the difference between hpgl2 and hpgl?

I believe that hpgl2 simply has an expanded command set. What are these?

There are many extra commands and extensions to commands. A few I can
think of off the top of my head:
Default 0,0 is in the corner instead of the center
extra rotations (180 and 270)
BP (Begin Plot)
QL (Quality Level)
PC (Pen Color)
PW (Pen Width)
PP (Pixel Placement)
LA (Line Attributes)
many others I can't think of right now. The above were the biggest effect
on what I wrote for. Many of the enhancements were to support raster-mode
(laser/inkjet) enhancements that the old vector pen plotters couldn't do.

Thanks Andy. This is most helpful information.

TomCee