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Featurescript fails when using EvBoundingBox?

luis_truebaluis_trueba Member, Developers Posts: 9 EDU
edited July 2017 in FeatureScript
Hello all,

I'm currently trying to write a script which evaluates the bounding boxes of a given set of parts, and then prints the vertices to the featurescript terminal. However, when I attempt to do this, it breaks and throws a Precondition of evBox3d failed (arg.topology is Query) error. I have added my code below. I'm sure it's a simple syntax thing, but I'm having a hard time finding relevant information online. Any help is greatly appreciated!

FeatureScript 626;
import(path : "onshape/std/geometry.fs", version : "626.0");

annotation { "Feature Type Name" : "Name Parts" }
export const NameParts = defineFeature(function(context is Context, id is Id, definition is map)
        annotation { "Name" : "Parts", "Filter" : EntityType.BODY, "MaxNumberOfPicks" : 100000 }
        definition.bodies is Query;

        // Define the parameters of the feature type
        for (var parts in definition.bodies) {
            // define bounding box
            const boundingBox is Box3d = evBox3d(context, {
                "topology" : parts ,
            // assign names
        println(" this is the list of parts" );


Best Answer


  • ilya_baranilya_baran Onshape Employees, Developers, HDM Posts: 932
    Ilya Baran \ Director, Architecture and FeatureScript \ Onshape Inc
  • luis_truebaluis_trueba Member, Developers Posts: 9 EDU
    evaluateQuery did the trick! Thanks!
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