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help using opBoolean

papawopapawo Member, Developers Posts: 206 PRO
where should i put the opBoolean so it subtract everytime it extrude?
var i = 0;
        for (var vertex in evaluateQuery(context, definition.locationsAH))
            var point is Vector = evVertexPoint(context, {
                    "vertex" : vertex
            var sketchNormal is Vector = evOwnerSketchPlane(context, {
                    "entity" : vertex
            var sketchPlane is Plane = plane(point, sketchNormal);
            var sketch = newSketchOnPlane(context, id + ("sketch" ~ i), {
                    "sketchPlane" : sketchPlane
            skCircle(sketch, "circle", {
                    "center" : vector(0, 0) * inch,
                    "radius" : .25 * inch
            opExtrude(context, id + "extrude1"+i, {
                    "entities" :qSketchRegion(id + ("sketch" ~ i), true),
                    "direction" : evOwnerSketchPlane(context, {"entity" : definition.locationsAH}).normal,
                    "endBound" : BoundingType.BLIND,
                    "endDepth" : 100 * inch
            opBoolean(context, id + "boolean1"+i, {
              "tools" : qCreatedBy(id + "extrude1"+i, EntityType.BODY),
              "operationType" : BooleanOperationType.SUBTRACTION
           i += 1;  


  • ilya_baranilya_baran Onshape Employees, Developers, HDM Posts: 980
    It would be easier for us to help if you posted a link to the full code and the error you're getting, but from what I'm seeing above, I am guessing you're running into an id gotcha (for which we've been meaning to report a more helpful error for a long time).  The issue is that you're doing operations as id+"extrude"+i and id+"boolean"+i.  So in the for loop, you get the following sequence:
    And the problem is that the id+"extrude1"+1 can't be used because the id+"extrude1" portion of the hierarchy has been closed.  The fixed is to do id+i+"extrude1" and id+i+"boolean1" instead.  That way the sequence is
    and everything is happy.
    Ilya Baran \ Director, Architecture and FeatureScript \ Onshape Inc
  • papawopapawo Member, Developers Posts: 206 PRO
    i am indeed so happy ! ... thank you!   :)
  • kevin_o_toole_1kevin_o_toole_1 Onshape Employees, Developers, HDM Posts: 485
    Some more info on this is available in the Id's type documentation.
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