opTransform error in FeatureScript

jason_bennett190

Hi,

I am trying to do an opTransform of type copy, but I am getting an error I don't understand. It seems like the error is saying that TransformType.COPY is a String and should not be a String, but it doesn't look like a string to me. Could someone tell me what I am doing wrong here?

Thanks,
Jason

This is my code:

<div>&nbsp;opTransform(context, id + "transform1", {</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "transform" : TransformType.COPY,</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "entities" : definition.part,</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "makeCopy" : true</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; });<br></div>

This is the error:

@opTransform: Map field 'transform' is of wrong type STRING 560:12   onshape/std/geomOperations.fs (opTransform) 62:13   Feature Studio 1 (const corePrint) 52:17   onshape/std/feature.fs (defineFeature) 91:17   Part Studio 1 (build) 94:9   Part Studio 1 (build) 7:12   Part Studio 1 (main)

mahir

The "transform" input of opTransform is an actual transform, not a TransformType. It's basically a 3x3 matrix describing scaling/rotation/translation or a 3 element vector describing just translation. There are several functions that will generate a transform object for you (see the examples below).

ilya_baran

To add to Mahir's answer, if you want to copy a part in place, use opPattern and pass an array consisting of one identity transform.  Or if you just write "transform" instead of "opTransform" and use your existing arguments, that will invoke the transform feature instead of the operation and that should do what you expect (just with a bit more overhead than opPattern).

jason_bennett190

Thanks to both of you. Mahir's answer got me most of the way there with a little bit of head scratching, and ilya's contribution got me the rest of the way.

otaolafr

hi,
I am looking all over the forum to find a good complete example with opPattern, I can not understand how to use it, I am trying to choose an object and then pattern in a list of vectors in the 3D space (not only a direction more like a "cloud" of points). From the feedback and answers from questions, I saw that opPattern would be a good idea.... but from the standard documentation (https://cad.onshape.com/FsDoc/library.html#opPattern-Context-Id-map) I can not get how to use it.
you guys are super helpful each time I am looking for help to do something you help me, but I would really like to look in the documentation to don't fill up the forum with my issues (and be a little bit independent ahahaha) is something I am missing!? like a formation or something?
thanks either way.

lana

See point pattern implementation here https://cad.onshape.com/documents/9fca78cb66a0bc83e359eb3e/w/01ed403357f48b8904c9b631/e/7052b96c07018ad97bbadbf9

jelte_steur814

for those after that still don't understand from above. I've finally figured out how to make a copy in place of an entity in Featurescript using opPattern. It's not hard looking back at it, but for a newb like me, figuring it out still took a long time.

This is wat worked for me:

        const instanceNames = ["Copy1"];

        const transforms = [identityTransform()];  //empty tranform tocopy in place. string in array

        

        opPattern(context, id + "pattern1", {

                "entities" : definition.targets,

                "transforms" : transforms,

                "instanceNames" : instanceNames

        });

good luck!