[GRASSGUI] layers added to wxgrass

[Michael Barton]

I just added the following new display layers to the layer manager in
wxgrass: d.shadedmap, d.rumbline, d.geodesic, and d.rast.arrow. This gives
the new wxPython GUI layer manager all the same types of layers available in
the TclTk GUI except for d.rast.num.

d.rast.num is a problem in the wxPython GUI because it requires a very low
resolution rendering (less than 100x100 cells). This is incompatible with
the rendering algorithm in wxgrass which keeps a constant GRASS output
display resolution that is equal to the display canvas resolution in pixels.
This makes for nice looking displays and very fast rendering, but is a
problem for d.rast.num. There is probably a way to solve this, but it will
take some thought and recoding.

AFAICT, the GUI in wxPython now has equivalent (or better) functionality
than the TclTk one with the following exceptions:
digitizing - actively under development
georectifying - next on my list
nviz - could really use some expertise in openGL to reconceptualize and
implement this.

Michael
__________________________________________
Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton


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