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transform rotate around axis

adamohernadamohern Member, OS Professional Posts: 216 PRO
edited April 2016 in FeatureScript
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?

Comments

  • ilya_baranilya_baran Onshape Employees, Developers, HDM Posts: 928
    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).
    Ilya Baran \ Director, Architecture and FeatureScript \ Onshape Inc
  • adamohernadamohern Member, OS Professional Posts: 216 PRO
    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_baranilya_baran Onshape Employees, Developers, HDM Posts: 928
    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.
    Ilya Baran \ Director, Architecture and FeatureScript \ Onshape Inc
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