[GRASS-dev] strange NVIZ behavior

[Anna Petrášová]

On Tue, Dec 2, 2014 at 7:12 PM, Michael Barton <Michael.Barton at asu.edu>
wrote:

>  One of my students recently install GRASS 7.0 svn for Windows. Today we
> tried to display a raster DEM in NVIZ, overlaid by a couple contour lines
> with values for walking distance from a site (from r.walk). The lines
> displayed but are floating above the surface at about the level of their
> contour values (3600 and 7200), in spite of all my attempts to bring them
> down to earth.
>
>
I see, these are 3D lines. I will look at it, hopefully during the next
week.

>  Related to this are a couple other NVIZ issues I’ve seen
>
>  1) making a line width greater than 1 creates a line made up of many
> many ++++ symbols at the size of the line width
>

I wonder if this happens only when the line is draped over a surface, then
it's drawn as many lines. I don't think there is a simple way to set line
caps in openGL, so I doubt I could fix it.

> 2) coloring a line only colors the first segment (cat=1) of a multisegment
> line.
>

does this happens  with recent grass? I thought I fixed something similar
to what you describe sometime in summer, but it might be a different
problem. If it happens with recent GRASS, could you send me the data (or
show the problem on nc_spm)?

Anna

>
>  I can do a ticket but perhaps these are already fixed in GRASS 7.1? I
> don’t use Windows regularly so I’m not up on what works and does not work.
>
>  Michael
>             ______________________________
>  C. Michael Barton
>  Director, Center for Social Dynamics & Complexity
>  Professor of Anthropology, School of Human Evolution & Social Change
>  Head, Graduate Faculty in Complex Adaptive Systems Science
>  Arizona State University
>  Tempe, AZ  85287-2402
>  USA
>
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