Hi David,

4 years, hehe, I think so too :)
I think I'm not doing a very good job of explaining what I'm looking
to do: I would like to use bitmap images that represent various
distributions (population density, foliage density, etc.) as inputs in
combination with a single surface 'landscape'. I picture the maps as
UV-mapped to the landscape, but this is not entirely necessary. At any
given point(u,v) on the landscape I would like to return the
corresponding color value at a point(x,y) at a given bitmap. I'm not
actually looking to deal with any color values that you see on screen,
but it would help the project if the maps could be made visible. Does
this make sense?

/Thomas


On Sep 24, 1:14 am, David Rutten <[EMAIL PROTECTED]> wrote:
> Hi Thomas,
>
> if you need to know the pixel colour due to lambertian shading then
> you'll have to implement that shading algorithm as code somewhere. If
> you also need highlights/textures/bumpmaps/emaps etc. I think you're
> in for a fun 4 years.
>
> --
> David Rutten
> Robert McNeel & Associates
>
> On Sep 21, 8:52 pm, twingate <[EMAIL PROTECTED]> wrote:
>
> > Hi All,
>
> > Without having investigated Grasshopper in detail; is there a method
> > for returning RGBA scalar at a point(u,v) for a given surface?
>
> > /Thomas

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