throw Exception error

daniel_cravens

Hi, I am new to onshape and only a hobbiest. I have solid c# skills but am completely new to feature scripting. 

I am receiving a throw Exception error when I attempt to call my feature "opTrapezoid" from my feature "Dove Tail". The Dove Tail feature is intended to calculated a point along a user-defined edge to draw a trapezoid, and then to sketch a trapezoid by calling the opTrapezoid feature. I'm not sure why I am getting the throw Exception error.

The link to the document is below. I've also pasted in the notices and relevant code.

https://cad.onshape.com/documents/4a05a3fe360ed36e462f3c76/w/88116110cd3e087d5b3fd67f/e/344d30709c1ff4d0a01a8b7e?renderMode=0&uiState=66708736321e044a1143ad8b

Thank you in advance for any help and/or advice.

Notices

throw Execution error
		77:21	onshape/std/feature.fs (defineFeature)
		206:13	Feature Studio 1 (const doveTail)
		56:17	onshape/std/feature.fs (defineFeature)
			Part Studio 1 (Dove Tail 1)
			Part Studio 1

		@newSketch: Duplicate id in context: FFaX7BXSI6lImH2_1.trapezoid1.sketch1
		262:20	onshape/std/sketch.fs (newSketchOnPlane)
		99:28	Feature Studio 1 (const opTrapezoid)
		56:17	onshape/std/feature.fs (defineFeature)
		206:13	Feature Studio 1 (const doveTail)
		56:17	onshape/std/feature.fs (defineFeature)
			Part Studio 1 (Dove Tail 1)
			Part Studio 1

debug: { "tAngle" : ValueWithUnits : { "unit" : UnitSpec : { "radian" : 1 } , "value" : 1.3089969389957472 } , "tBase" : ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.0105 } , "tDepth" : ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.008 } , "tHeight" : ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.016 } , "tOriginPoint" : Vector : [ ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.05 } , ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0 } , ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.01666666666666667 } ] } debug: { "tAngle" : ValueWithUnits : { "unit" : UnitSpec : { "radian" : 1 } , "value" : 1.3089969389957472 } , "tBase" : ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.0105 } , "tDepth" : ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.008 } , "tHeight" : ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.016 } , "tOriginPoint" : Vector : [ ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.05 } , ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0 } , ValueWithUnits : { "unit" : UnitSpec : { "meter" : 1 } , "value" : 0.008333333333333335 } ] } Result: Regeneration complete

Code

//
//  Dove Tail
//

annotation { "Feature Type Name" : "Dove Tail" }

export const doveTail = defineFeature(function(context is Context, id is Id, definition is map)

    precondition

    {

        annotation { "Name" : "Edges", "Filter" : EntityType.EDGE, "MaxNumberOfPicks" : 1 }

        definition.edges is Query;

            

        annotation { "Name" : "Number of cuts" }

        isInteger(definition.cutNumber, POSITIVE_COUNT_BOUNDS);

   

    }

    {

            

        var spacing = 1.0/(definition.cutNumber + 1); 

        var parameterizedCutPoints is array = makeArray(definition.cutNumber);

        

        for (var i = 0; i < definition.cutNumber; i += 1)

        {

            parameterizedCutPoints[i] = (i + 1) * spacing;

        }

        

        var cutLines = evEdgeTangentLines(context, {

                "edge" : definition.edges,

                "arcLengthParameterization" : true,

                "parameters" : parameterizedCutPoints

        });

        

            

        for (var pt in cutLines)

        {

            opTrapezoid(context, id + "trapezoid1", {                                

                "tHeight" : 16 * millimeter,

                "tBase" : 10.5  * millimeter,

                "tAngle" : 75 * degree,

                "tDepth" : 8  * millimeter,

                "tOriginPoint" : pt.origin

                });

        }  

                

    });    

//
//  opTrapezoid
//

    annotation { "Feature Type Name" : "opTrapezoid" }

    export const opTrapezoid = defineFeature(function(context is Context, id is Id, definition is map)

        precondition

        {

            // Define the parameters of the feature type

        }

        {

        debug(context, definition, DebugColor.RED);

        

/*        

        var tOriginPoint;

        if (definition.originPoint is Query)

        {

            var myPoints is Query = qEntityFilter(definition.originPoint, EntityType.VERTEX);

          

            tOriginPoint = evVertexPoint(context, {

                    "vertex" : myPoints

            });

                    

        }

        else

        {

            tOriginPoint = definition.tOriginPoint;

//            debug(context, tOriginPoint);

        }

  */          

            const sketch = newSketchOnPlane(context, id + "sketch1", {

                    "sketchPlane" : plane(definition.tOriginPoint, vector(0, 1, 0))

            });

            var xWing = definition.tHeight / tan(definition.tAngle);

            

            var tOrigin is Vector = vector(-definition.tBase/2 , -definition.tDepth);

            var point1 is Vector = vector(definition.tBase,0 * millimeter) + tOrigin; 

            var point2 is Vector = vector(definition.tBase - xWing, definition.tHeight) + tOrigin;

            var point3 is Vector = vector (xWing, definition.tHeight) + tOrigin ;

            

            

            skLineSegment(sketch, "base", {

                    "start" : tOrigin,

                    "end" : point1

            });

            skLineSegment(sketch, "side1", {

                    "start" : point1,

                    "end" : point2

            });

            skLineSegment(sketch, "top", {

                    "start" : point2,

                    "end" : point3

            });

            skLineSegment(sketch, "side2", {

                    "start" : point3,

                    "end" : tOrigin

            });

    

            skSolve(sketch);

            });

   

NeilCooke

The id must be different for each call to opTrapezoid like id + “trapezoid” + i (where i is a counter in the for loop). 

daniel_cravens

Thank you for your help! It works now.