HP-GL/2 color fill patterns

[jlasman]

Does anyone know a way of producing a shade patten in color in HP-GL/2? This is in a PCL5C context.

It seems that regardless of the current pen color, the shadings are mapped to black.

Any ideas?

Jim Asman

http://www.spectracolorservices.com

 

[DansDadUK]

Jim

I'd need to look this up, but shouldn't you be setting BRUSH colour for the fill, rather than PEN colour?

C.

 

[jlasman]

I don't know. I've never heard of a brush in a GL context, and I don't recall a reference in the PCL5C manual. I will look again.

Thanks...

Jim Asman

http://www.spectracolorservices.com

 

[DansDadUK]

Jim

My mistake! Pens only.

I'm not very familiar with HP-GL/2; I just assumed that it would use brush as well as pen (like PCL XL does).

Perhaps colour only works with user-defined patterns?

 

[jlasman]

My test WAS a user defined pattern, and I also tried a builtin, but to no avail.

Interestingly, if you create the shading in PCL, user defined or builtin, it respects the foreground color specified. No problem then on rectangles, my current issue, but it would be difficult then on an irregular shape.

Hopefully, I may never encounter it. Thanks for the input.

Jim Asman

http://www.spectracolorservices.com

 

[jlasman]

I figured it out.

The salvation lies in the SV(screened vector) command.

On a user defined HP-GL/2 raster fill pattern, the SV command has an option whereby you can specify(indirectly) the pen to use to print the shading.

Jim Asman

http://www.spectracolorservices.com