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Problem with opLoft and qUnion([qNthElement(......query

tonvistonvis Member Posts: 35
Can someone of the team please help me out ?

Working on a Bevelgear FS combining Neil Cooke's Spurgear and ika Hölsö's FS , I got problems with opLoft to use two teethprofiles  as edgequeries from qUnion([qNthElement( .......
Lofting whole sketches is no problem but  I just need a cut-outpart of the sketches:

/* 687
    var vertrices = qUnion([outer_modul, inner_modul]);
    var profileSubqueries = [qCreatedBy(id + "sketch5"), qCreatedBy(id + "sketch6")]; 

    opLoft(context, id + "loft1", {  //@opLoft: LOFT_VERTEX_ADDITIONS error
                "profileSubqueries" : profileSubqueries,
                "vertrices" : vertrices
            });
*/


I has tried everything. It may be very simple but I can't find a solution.
When working in partstudio it is no problem to loft the both faces.

May thanks for your help
tonvis






Best Answer

  • tonvistonvis Posts: 35
    Accepted Answer
    I found the answer 



        //******************************forming teeth *********************************************
        /**  to get the teeth_faces out of all other faces, this is the right way to do it
         *   use qSketchRegion(id) and qUnion([qNthElement(faces, n)])
         *  I was using edges first, but that was the wrong way of doing
         *  with no result
         * */
        // -----------------solves all the faces to select from --------------------------

        var faces = qUnion([qSketchRegion(id + "sketch5"), qSketchRegion(id + "sketch6")]);
        //debug(context, faces); //debug: Query resolves to 2x6 faces


        // ----------------- get the teeth_faces  out of 6 faces -------------------------------
        //var faceQuery0 = qUnion([qNthElement(faces, 0)]);
        var faceQuery1 = qUnion([qNthElement(faces, 1)]); //2 x onder
        //var faceQuery2 = qUnion([qNthElement(faces, 2)]);
        //var faceQuery3 = qUnion([qNthElement(faces, 3)]);
        var faceQuery4 = qUnion([qNthElement(faces, 4)]); //2 x boven
        //var faceQuery5 = qUnion([qNthElement(faces, 5)]);
        //debug(context, faceQuery1);
        //debug(context, faceQuery4);

        /** no problem for loft any longer ! it was really hard  to find the solution */
        opLoft(context, id + "loft1", {
                    "profileSubqueries" : [faceQuery1, faceQuery4]
                });

    tonvis

Answers

  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,772
    You probably need to be more specific with your query: var profileSubqueries = [qCreatedBy(id + "sketch5"), qCreatedBy(id + "sketch6")]; 

    Sketches have edges, faces, vertices, bodies - which ones are you lofting?
  • tonvistonvis Member Posts: 35
    Hello Neil,
    I am aware of your point but that is just my question . Featurescript is not  simple to make the right queries.
    On the sketch picture you see the corresponding cut-out for teeth, but I can't get hold on these faces,edges or bodies to obtain a loft
    What query do I need ?
    Thanks for your quick reaction
    tonvis
  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,772
    edited December 2019
    try:
    var profileSubqueries = [qCreatedBy(id + "sketch5", EntityType.FACE), qCreatedBy(id + "sketch6", EntityType.FACE)];

  • tonvistonvis Member Posts: 35
    Neil,
    Thanks for your answer.

    I had tried this before and then I got this total sketch , but I need only loft a vew parts out of it.



    If I      // --------------------------------- delete unused edges ------------------------------------------
        opDeleteBodies(context, id + "deleteBodies1", {
                    "entities" : delete_edges
                });
    All will disapear and I get @opLoft: LOFT_SELECT_PROFILES error.

    I hope that you help me out with a solution toget  hold on  :

       var outer_modul = qUnion([ // 2x bottom edges
                edgeQuery_5,
                edgeQuery_6,
                edgeQuery_8,
                edgeQuery_10
            ]);
    and 
       var inner_modul = qUnion([ // 2x top edges
                edgeQuery_17,
                edgeQuery_16,
                edgeQuery_19,
                edgeQuery_21
            ]);

    They won't listen to me !


    tonvis
  • tonvistonvis Member Posts: 35
    Accepted Answer
    I found the answer 



        //******************************forming teeth *********************************************
        /**  to get the teeth_faces out of all other faces, this is the right way to do it
         *   use qSketchRegion(id) and qUnion([qNthElement(faces, n)])
         *  I was using edges first, but that was the wrong way of doing
         *  with no result
         * */
        // -----------------solves all the faces to select from --------------------------

        var faces = qUnion([qSketchRegion(id + "sketch5"), qSketchRegion(id + "sketch6")]);
        //debug(context, faces); //debug: Query resolves to 2x6 faces


        // ----------------- get the teeth_faces  out of 6 faces -------------------------------
        //var faceQuery0 = qUnion([qNthElement(faces, 0)]);
        var faceQuery1 = qUnion([qNthElement(faces, 1)]); //2 x onder
        //var faceQuery2 = qUnion([qNthElement(faces, 2)]);
        //var faceQuery3 = qUnion([qNthElement(faces, 3)]);
        var faceQuery4 = qUnion([qNthElement(faces, 4)]); //2 x boven
        //var faceQuery5 = qUnion([qNthElement(faces, 5)]);
        //debug(context, faceQuery1);
        //debug(context, faceQuery4);

        /** no problem for loft any longer ! it was really hard  to find the solution */
        opLoft(context, id + "loft1", {
                    "profileSubqueries" : [faceQuery1, faceQuery4]
                });

    tonvis
  • Jake_RosenfeldJake_Rosenfeld Moderator, Onshape Employees, Developers Posts: 1,475
    edited January 24
    @tonvis

    It's not really a great idea to rely on qNthElement().

    What I would do instead is something specific like:

    const face1 = qContainsPoint(qSketchRegion(id + "sketch5"), vector(1, 2, 3) * inch);
    const face2 = qContainsPoint(qSketchRegion(id + "sketch6"), vector(3, 2, 1) * inch);


    Replacing the position with an actual position that you know exists on that sketch face.
    Jake Rosenfeld - Modeling Team
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