[GRASS-dev] Re: [GRASS GIS] #31: NVIZ issues in GRASS6.x

[GRASS GIS]

#31: NVIZ  issues in GRASS6.x
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  Reporter:  clerici      |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect       |      Status:  new                      
  Priority:  major        |   Milestone:  6.4.0                    
 Component:  NVIZ         |     Version:  6.2.3                    
Resolution:               |    Keywords:  nviz                     
  Platform:  Unspecified  |         Cpu:  Unspecified              
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Comment (by cmbarton):

 1) In the control panel the LOOK cancel button does not work (it works on
 6.0)

 no longer applicable

 2) In the control panel the LOOK RESET button does not reset twist (bug?)

 fixed

 3) In the Surface panel the masking doesn't have any effect on 'fine'
 surfaces but only on 'wire' surfaces and vectors maps.

 AFAICT, this is an issue with the C or C++ code. I can't see how it can be
 fixed via TclTk

 4) In the Surface panel the emission parameter (in Surface Attribute)
 seems ineffective.

 Setting emissions from a map works fine. I can't find a way to clear it.
 It looks like it ought to be unset_att emi and/or set_att emi constant 0.
 But neither seems to have any effect. A bug in the C/C++ code?

 5) In the Surface panel the Transparency function has a strange behaviour
 with the 'constant' elevation surfaces. When a transparency value is
 assigned to the surface and the DRAW button is pressed, the surface is
 hidden by the other surfaces. Only by pressing the Draw Current button in
 the Surface panel the transparency is effective, but reduces progressively
 each time the button is pressed. If the DRAW button is pressed again the
 surface return to be hidden. For a check the elevation.dem and a surface
 at an elevation of 5,000 m can be used.

 I can't confirm this or say that it is fixed

 6) In the panel Vectors Lines/3D Polygons the Display Flat function seems
 ineffective.

 Seems like a C/C++ code problem. The calls in TclTk seem to be correct
 AFAICT

 7) The Vector points are not displayed on the surface, but seem suspended
 in the air above the surface, reproducing the surface morphology (the
 elevation difference seems to be a constant). Only if the surface is a
 plane at constant elevation the points are located on the surface (checked
 with archsites and bugsites on elevation.dem and on a surface at 5000 m).
 The problem doesn't exist in grass6.0.

 This seems fixed. Points are setting on the surface or slightly embedded
 in the surface.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/31#comment:6>
GRASS GIS <http://grass.osgeo.org>