using for-loop and variables in path command

In other languages, if I wanted to draw a star, say, I'd have something like this:

```
startShape();
for (i = 0; i < numPoints; i++)
{
angleR = TAU/numPoints * i;
angler = TAU/numPoints * (i + 0.5);

vertex(bigRadius * cos(angleR), bigRadius * sin(angleR));
vertex(smallRadius * cos(angler), smallRadius * sin(angler));
}
endShape();
```

Can I do something similar in zdog? If so, I can't work out how, nor can I work out how to pass a variable to the path command.

```
var x1 = Math.random(-50, 50);
var y1 = Math.random(-50, 50);
var z1 = Math.random(-50, 50);
var x2 = Math.random(-50, 50);
var y2 = Math.random(-50, 50);
var z2 = Math.random(-50, 50);

new Zdog.Shape({
...
path: [
{ x: x1, y: y1, z: z1 },
{ x: x2, y: y2, z: z2 },
],
...
```

Have I got the syntax wrong or am I hoping for too much?
Thanks!

No file, test, or entry point is named in the issue. Start by reading the path API documentation and its implementation, then determine whether paths can be generated with loop variables; done should be a clear supported-usage answer or a scoped change with coverage.

Written by the indexing model from the issue text.