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> On Sat, 06 Apr 2002 08:50:42 -0600, "Tom A." <tar### [at] my-deja com> wrote:
> > One thing I hoped to do was combine a heightfield with a granite pattern
> > (for mountains) with some other math functions (something like a sin
> > function so the edges of the mountains reduce to the foothills.) Yet it
> > appears that the pattern cannot be mixed with the math functions - is
> > this true? Or am I overlooking something.
>
> IIRC you participated Shortest Code Contest. Take a look at my entry
> http://10best.raytrace.com/short/ks3_800.JPG
> http://10best.raytrace.com/short/ks3.pov
> There is mixed usage of 3 types of function: math, spline and pattern.
> Chapter 6.1.6.
>
> Also look at below sample:
> #local F1=function{pattern{agate}};
> #local F2=function( a,b ) { a*b };
> #local F3=function{pigment{granite}};
> #local F4=function{spline{0,x,1,z}};
> #local F=function{ F1(x,y,z) + F2(x,y) + F3(x,y,z).red + F4(z).x };
>
Thank you! That did the trick.
> > Also, once I have my hightfield, I have heard that there is a way to
> > find intersections, so that I can place objects correctly on the
> > mountain.
>
> trace
>
>
> Direction of ray sended for intersection with object
> Chapter 6.1.4.6
Again, thank you!
>
> ABX
--
Tom A.
into that pit of cotton-top hell, and let them hippity-hop
all over my vulnerable flesh? - Buffy the Vampire Slayer
Deja mail is gone. Look for me at raugost at yahoo . com
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