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Re: opacity "bleeds" in V7 graphics? [compared to V6]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95836] Re: opacity "bleeds" in V7 graphics? [compared to V6]
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 28 Jan 2009 06:32:27 -0500 (EST)
  • Organization: Uni Leipzig
  • References: <glmss7$mkd$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

this is a bug but

obj = Plot3D[Sin[x^2 + y^2], {x, -3, 3}, {y, -3, 3}, PlotPoints -> 40,
    Mesh -> None, BoundaryStyle -> None];

obj /. GraphicsComplex[pnts_, dta_, more___] :>
   GraphicsComplex[pnts, dta, more,
    VertexColors -> (RGBColor[0, 0, 1, First[(# + 2)/4]] & /@ pnts)]

may help.

Regards
   Jens


congruentialuminaire at yahoo.com wrote:
> Hello MathGroup:
> 
> I am not sure about this problem. Currently all I can tell is that the
> result looks different between the 2 versions and we used to call this
> "bleeding".
> 
> The input run under both version is:
> 
> Plot3D[Sin[x^2 + y^2], {x, -3, 3}, {y, -3, 3}
>  , ColorFunction -> (Directive[Opacity[#], Blue] &)
>  , PlotPoints -> 40, Mesh -> None]
> 
> Any help you can provide is appreciated.
> 
> Regards..
> 
> Roger Williams
> Franklin Laboratory
> 


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