[GRASS-dev] [GRASS GIS] #1719: GRASS 7 Monitor command line support

[GRASS GIS]

#1719: GRASS 7 Monitor command line support
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 Reporter:  annalisapg   |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  7.0.0                    
Component:  wxGUI        |     Version:  svn-trunk                
 Keywords:  d.mon        |    Platform:  Unspecified              
      Cpu:  Unspecified  |  
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Comment(by cmbarton):

 Replying to [comment:16 glynn]:
 > Replying to [comment:15 cmbarton]:
 >
 > > The PNM image is translated to a PNG.
 >
 > By what? g.pnmcomp outputs a PPM file.

 By wx.Image. It is translated to a wx.Bitmap

 >
 > > This could skip running g.pnmcomp and g.pnmtopng.
 >
 > g.pnmtopng?

 Wrong. I mentioned g.ppmtopng by mistake.

 >
 > > 2. A 'wxPython driver' could be developed that would dispense with
 rendering to files that need to be read.
 >
 > How would this work?

 No idea. Just that wxPython can read a bitstream.

 >
 > > 4. The d.* modules simply take some time to render. I'm pretty sure
 that this is what takes up the most time in displays, even with displaying
 to screen resolution instead of region resolution. Perhaps these could be
 sped up. Or perhaps the rendering and compositing could be done in GRASS
 in a single step.
 >
 > In theory, the fastest solution should be to use the cairo driver with
 output to X Pixmaps. The d.* modules generate output in video memory, and
 may be hardware accelerated. Compositing occurs entirely in video memory,
 and may be hardware accelerated. The main unknowns are how hard wxWidgets
 makes this, and whether something similar can be achieved on other
 platforms.


 X is only reliably available on Linux. Not really an option for Windows or
 Mac.

 Michael

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1719#comment:18>
GRASS GIS <http://grass.osgeo.org>