[GRASS-dev] WxPython front-end to ps.map

Hamish hamish_nospam at yahoo.com
Sun Feb 11 19:41:12 EST 2007


Glynn Clements wrote:
> My original preference for a new graphics API was to have d.* commands
> simply generate PostScript conforming to certain conventions. The
> resulting PostScript could then be drawn on screen (x11 driver),
> rendered to an image (PNG/PPM/BMP/etc drivers) or sent to a printer
> (either a native PostScript printer or via the ljet/PCL/etc drivers).
> 
> Unfortunately, rendering vector maps using PostScript is between 1 and
> 2 orders of magnitude slower than using XDrawLine(), which is bad for
> interactive use. So we still need some kind of intermediate layer
> which provides a speed-before-quality option for drawing lines.

What about adding a [E]PostScript display driver? Akin to the PNG
driver, vs. the x11 driver. It would primarily be intended for hardcopy
output, but could potentially be used for (slow) GUI protoypes.


Hamish




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