I have a scad file with 50 modules, each one imports a different svg
file, each svg file needs different scaling and X-Y translation.
With python or perl exec(), iirc, I can pass a string to my parent
module that could be used to call the correct svg import module, like
this if exec() existed in OpenSCAD:
module parent(var) { exec(str("import_", var));}
I'm looking for something more clever than a 50 line conditional
statement.
Just to confirm what you're looking for:
You have a string that has a module name, and you want to call that
module. Right?
There's currently no way to do that.
For your particular case, where you have n SVG files with n scale
factors and n translations, you could put all of that in an array,
something like:
NAME = 0;
SCALE = 1;
TRANSLATE = 2;
list = [
[ "aaa", 1.0, [3,4] ],
[ "bbb", 1.2, [0,0] ],
[ "ccc", [1, 2], [-5, -5] ],
...
];
for (e = list) {
translate(e[TRANSLATE]) scale(e[SCALE]) import(str(e[NAME], ".svg"));
}
... but there's nothing that will help you with the general case of
dispatching to modules.
PR#4478 has a couple of features that might be helpful, but has no ETA.
Module references:
list = [
module () { translate([3,4]) import("aaa.svg"); },
module () { scale(1.2) import("bbb.svg"); },
module () { translate([-5,-5]) scale([1,2]) import("ccc.svg"); },
...
];
for (m = list) m();
Geometry values:
list = [
{{ translate([3,4]) import("aaa.svg"); }},
{{ scale(1.2) import("bbb.svg"); }},
{{ translate([-5,-5]) scale([1,2]) import("ccc.svg"); }},
...
];
Objects/dictionaries/associative arrays:
list = {
aaa: { t: [3,4] },
bbb: { s: 1.2 },
ccc: { t: [-5,-5], s: [1,2]),
...
};
for (n = list) {
e = list[n];
translate(e.t ? e.t : [0,0])
scale(e.s ? e.s : 1)
import(str(n, ".svg"));
}
and of course objects/dictionaries/associative arrays can contain module
references and geometry values.
It doesn't have "given a string, call the named module", though I think
that would be pretty straightforward: there could be a function that,
given a string, would look it up and return a module reference.
