transform rotate around axis

adamohern

opTransform(context, id + "transform1", {
        "bodies" : qCreatedBy(id + ("profileSketch")),
        "transform" : transform({
            "transformType" : TransformType.ROTATION,
            "angle" : definition.axialRotation * degree,
            "transformAxis" : ???
            })
});

I want to rotate a sketch around its z axis. I was hoping that the above would get me there. For the purposes of this thread, let's assume I was correct in my approach.

Note that "transformAxis" wants a Query. I don't have a transform axis. It would be trivial to create a Line using the sketch plane's origin and normal, but I don't think I can query that (can I?). A workaround is to create a sketch on a perpendicular plane, add a line to it, then query that line. This seems like a lot of runaround for something so simple. Is there a better way?

ilya_baran

The problem here is due to confusion between transform the feature and functions to create an actual transform.  The opTransform documentation has some examples you can use -- one of them (the one you want) is using rotationAround, which takes a Line and an angle:

        const zAxis = line(vector(0, 0, 0) * meter, vector(0, 0, 1));
        opTransform(context, id + "transform1", {
                "bodies" : qCreatedBy(id + ("profileSketch")),
                "transform" : rotationAround(zAxis, definition.axialRotation)
        });

Note that if you asked for definition.axialRotation in the precondition using isAngle, you shouldn't multiply by degree (because it's already an angle).

adamohern

The opTransform documentation has some examples you can use

Oh dear. What did I miss? I just double-checked and didn't find any examples in the source or reference. Where are they?

ilya_baran

Ah, my bad -- I was looking at the not-yet-released version of the library -- we have a number of documentation improvements on the way.