[x3d-public] Is LineSet per segment or per vertex color ?

[Don Brutzman]

Thanks for close attention to detail here Andreas.

Spec seems crystal clear, that of course takes precedence.

Looks like an error in X3D4WA and something to improve in tooltips.  I will take those fixes for action.

On 1/7/2020 10:43 AM, Andreas Plesch wrote:
> Fixing up colorPerVertex line issues, the question in the subject arose.
> 
> The spec. at
> 
> https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/rendering.html#LineSet
> 
> says "The color field specifies the colour of the line set at each vertex  .."
> 
> indicating color per vertex coloring.
> 
> However, the example at
> 
> http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter06-GeometryPointsLinesPolygons/LineSetComparisonIndex.html
> 
> says in the description that LineSet has per segment coloring.
> 
> The tooltip at
> 
> https://www.web3d.org/x3d/content/X3dTooltips.html#LineSet
> 
> sidesteps by saying that the color field is a
> "Single contained Color or ColorRGBA node that specifies color values
> applied to corresponding vertices according to colorIndex and
> colorPerVertex fields."
> 
> which is likely a copy/paste oversight since there are no colorIndex
> or colorPerVertex fields.
> 
> x_ite and x3dom currently do color per vertex coloring.
> 


all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman