How to pass parameter to skRegularPolygon "centre"?

owen_sparks

Hi guys.

Sorry to be asking trivial questions.  I feel like a toddler again.

I'm trying to set the center point for a polygon on a recently created sketch as follows:-

It looks like the evVertexPoint returns a 3D vector where as the polygon is looking for a 2D vector.

                        
                           var sketch1 = newSketchOnPlane(context, id, {
                           "sketchPlane" : evOwnerSketchPlane(context, {
                                "entity" : definition.targetpoint
                           })
                           });

                           var startPosition is Vector = evVertexPoint(context, {
                                "vertex" : definition.targetpoint    
                            });
                           
                            debug(context, startPosition);
                           
                             skRegularPolygon(sketch1, "polygon1", {
                                    //"center" : vector(0, 0) * millimeter,
 Duff bit>>                    "center" : startPosition,
                                    "firstVertex" : vector(0, FeatureWidth/2) * millimeter ,
                                     "sides" : 6
                             });

error message is "Precondition of skRegularPolygon failed (is2dPoint(value.center))"

the debug yields sensible looking 3d coordinate values so I think we're good to that point.
With the incorrect "center"  set back to a vector (0,0) * millimeter the code executes fine with the polygon placed about the origin.

Any help appreciated.

Cheers,

Owen S.

ilya_baran

To expand a little, in your example, store the result of evOwnerSketchPlane into a variable (say, "sketchPlane") and then to skRegularPolygon you can pass worldToPlane(sketchPlane, startPosition)

kevin_o_toole_1

Specifically, use worldToPlane(Plane, Vector), which returns a 2D vector in plane space.

Project will move the point onto the plane but still returns a 3D vector in world space.

john_f_carr

is2dPoint checks for a point in two dimensions but you passed a point in 3 dimensions.  You may need to project onto the sketch plane.

ilya_baran

To expand a little, in your example, store the result of evOwnerSketchPlane into a variable (say, "sketchPlane") and then to skRegularPolygon you can pass worldToPlane(sketchPlane, startPosition)

kevin_o_toole_1

Specifically, use worldToPlane(Plane, Vector), which returns a 2D vector in plane space.

Project will move the point onto the plane but still returns a 3D vector in world space.

owen_sparks

Thanks guys, that worked perfectly.

Much obliged.

Owen S.