Hi,
I currently use this kind of code (for a raytracer):
val s = new Sphere {
center = (20.0, 10.0, 0.0)
radius = 5.0
material = new MatteMaterial {
color = Red
diffuse = 1
ambient = 1
}
}
Where "center", "radius" and "material" are declared as vars in Sphere
class with default values. Same thing for "color", "diffuse" and
"ambient" in MatteMaterial.
With the coming named arguments, I thought I would replace these classes
by functions "sphere" and "matteMaterial" with appropriate named
arguments with default values. This way I could use vals instead of
vars, there would be no conflict between variables defined by users of
this ""DSL"" and internal vars/functions/... and I would have this syntax:
val s = sphere (
center = (20.0, 10.0, 0.0),
radius = 5.0,
material = matteMaterial (
color = Red,
diffuse = 1,
ambient = 1
)
)
"new"s are dropped and this looks better. However, the question is:
would it be possible to drop ending commas by allowing named parameters
to be separated by a line break?
Or is there a better way to have a kind of POV-ray syntax?
Cheers,
Sylvain
