|
 |
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 };
> 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. I saw the <mumble mumble>
trace
> Intersection function which takes a
> vector, a position, and a third parameter, but I am not seeing what that
> third parameter is?
Direction of ray sended for intersection with object
Chapter 6.1.4.6
ABX
Post a reply to this message
|
|
