On 07/04/2012 6:53 PM, blooflame wrote:
> I think I understand a little of the image map thing used to provide textures
> for surfaces, and why a bitmap becomes a square polygon (0,0) to (1,1).  What I
> want is to bring a bitmap in as a "billboard" more or less, with its aspect
> ratio retained (and I guess, assuming square pixels in the original.  To be able
> to do that, it seems I would need to read the bitmap and have each area of color
> become a polygon filled with that color - I think.
>
> 1) If I load the bitmapped image as an image map and stretch it to match its
> original aspect ratio (for example, if it was 320 x 240) will it look like it
> originally did and therefore I can ignore the problem?  (when I last tried this
> about 3 years ago, I knew the SDL statements to do this, but I've forgotten
> them).
>
> 2) if not, then are there any utilities or graphics programs out there which
> will create POV-Ray polygons from bitmapped images?
>
> 3) Am I even barking up the right tree?
>
>

Have you tried to use a height field?

#declare HeightField0 =
height_field {
    png "F:\Graphics\B3D Data\Maps\D Dell02N.png"
    water_level 0.010
    smooth
    hierarchy
    texture{ Gold_Texture0 }
    scale     <80.000000,2.000000,25.000000>
    rotate    <-90.000000,0.000000,0.000000>
    translate <-40.000000,0.000000,81.370000>
}  // end HeightField0


-- 
Regards
     Stephen

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