How to make a duplicate of a part in featurescript

leti_ryder · December 2022

Hi guys!
I am trying to make a duplicate of a part in featurescript, I am using opPattern which requires a transform input. I am not sure what to enter.

var bfsBody = qCreatedBy(sketchId + "revolve1", EntityType.BODY);

var bfsBody = qCreatedBy(sketchId + "revolve1");

debug(context, bfsBody);

opPattern(context, id + "pattern1", {

"entities" : bfsBody,

"transforms" : transform(vector(1, 2, 50) * millimeter),

"instanceNames" : "scaled_body"

});

mahir · December 2022

I believe the input for "transforms" is an array of transforms. So you'll need to add brackets [] around the transform command to turn it into an array of one transform. The transform dictates where exactly the copy is going to be placed. In your example, you're using a transform with a single distance vector input of (1, 2, 50) * millimeter. That means your copy will be moved 1/2/50mm in x/y/z. Check out the documentation at the link below for details on more complicated transforms involving scaling/rotation along with specific syntax.

https://cad.onshape.com/FsDoc/library.html#module-transform.fs

MichaelPascoe · December 2022

Echoing @mahir. opPattern needs a "transform" of some sort to know what to do with the new item.
The transform and the name must be in an array [ ]. You can transform the new patterned entity to its original position like this:

    var bfsBody = qCreatedBy(sketchId + "revolve1", EntityType.BODY);
    var bfsBody = qCreatedBy(sketchId + "revolve1");
    debug(context, bfsBody);

    opPattern(context, id + "pattern1", {
                "entities" : bfsBody,
                "transforms" : [transform(XY_PLANE, XY_PLANE)],
                "instanceNames" : ["scaled_body"]
            });

If you wanted to pattern multiple items the transforms and the names must be separated by a comma:

    var bfsBody = qCreatedBy(sketchId + "revolve1", EntityType.BODY);
    var bfsBody = qCreatedBy(sketchId + "revolve1");
    debug(context, bfsBody);

    opPattern(context, id + "pattern1", {
                "entities" : bfsBody,
                "transforms" : [transform(XY_PLANE, XY_PLANE), transform(XY_PLANE, XY_PLANE), transform(XY_PLANE, XY_PLANE)],
                "instanceNames" : ["scaled_body1", "scaled_body2", "scaled_body3"]
            });

EvanReese · December 2022

Michael is right on the money here. If you don't want to move it in any way you can use identityTransform() to make a transform that doesn't do anything instead of transform(XY_PLANE, XY_PLANE)

How to make a duplicate of a part in featurescript

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