{sigh}
Since you're supplying the other 6 parameters as numeric values in your function
declaration, you don't need to supply them as actual parameters when you call
the function.
try:
#declare PlainAndGrass = function {Plain (x, y, z) +
Grass (x, y,z).red*GrassHeight}
If you want to keep it like it is in the final function, rewrite Plain using
(x, y, z, P0, P1, P2, P3, P4, P5) in both parentheses and curly braces.
But just try x,y, z for now.
- BW
