Cannot Snap to Trace Reference

[Anonymous]

I am working on a wall section and would like to draft it over a trace reference of the wall section view. In the view, I turned on the trace reference and dragged it to the side to draft over. For some reason I cannot snap to the trace reference with lines, fills, etc. Could someone tell me if there is a way to turn snapping on/off to the trace reference? Or, what else might be going on?

Many thanks!

Using Archicad 21

[Laszlo Nagy]

I have tried this and for me it is possible to find nodes and edges on the Trace Reference. So it works correctly for me.
One thing you could try is update your graphics card drivers. Sometimes such driver errors can cause such behavior in display.

[Anonymous]

I have checked the same file on another computer with the same graphics card and I am able to snap to the trace reference in that file without a problem.

There are a couple exceptions to this problem:

-snapping to a trace ref. in a plan view works fine, however the I have the same issue with building section and elevation views.

-I am able to snap to the 2D elements and elevation benchmarks in the trace reference.

Not sure what this might mean... It seems that the issue might only be with modeled elements.

Is there any way to disable snapping to a trace reference? Could I have done something inadvertently to turn it off? (Snap to Grid is turned off)

[Anonymous]

Thanks Lazlo for your previous reply. Is this the appropriate forum for this question? Should I repost elsewhere?

[Karl Ottenstein]

LOUTRO wrote:
Thanks Lazlo for your previous reply. Is this the appropriate forum for this question? Should I repost elsewhere?

This is the correct forum. If you are using the commercial (non-student) version, you have free tech support - give them a call to perhaps screenshare with you and sort this out. 😉

[Stress Co_]

laszlonagy wrote:
I have tried this and for me it is possible to find nodes and edges on the Trace Reference. So it works correctly for me.

Hi Laszlo.
Did you test it using a section (or elevation) as the active with a section (or elevation) as the trace reference?

Under those conditions, I can snap to all 2D elements in the trace reference,
but cannot snap to any 3D model elements.
If I use a story/plan view or a layout as the trace, with a section or elevation active, it snaps to everything.
Pretty much as LOUTRO described.

Also, works fine in AC20 files.

[Laszlo Nagy]

Hi Marc,

No, I have not tried it like that.
But I tested it the way you write it and I am getting the same behavior as you describe: when the active Viewpoint is a Section, and the Trace Reference is another Section, I cannot snap to model elements in the Trace Reference. If the Trace Reference is a Floor Plan Viewpoint or a Layout, I can snap to all elements.

I also noticed another thing which I think is a bug: in the Trace Reference Palette, there is a right-pointing arrow button to the right of the Reference opacity slider. It takes you to the pop-up Dialog where you can define which element types should be displayed in the Trace Reference. In the list I can see all Element types, including the Stair element type (new in AC21), but I cannot see the Railing element type (also new in AC21). I think this is also a bug.

I will report these findings to GRAPHISOFT.

[Stress Co_]

laszlonagy wrote:
I also noticed another thing which I think is a bug: in the Trace Reference Palette, there is a right-pointing arrow button to the right of the Reference opacity slider. It takes you to the pop-up Dialog where you can define which element types should be displayed in the Trace Reference. In the list I can see all Element types, including the Stair element type (new in AC21), but I cannot see the Railing element type (also new in AC21).

I cannot see any 3D elements in that list (walls, roofs, stairs, slabs, shells, morphs, beams or columns).

[Laszlo Nagy]

It seems that the list is Viewpoint-dependent. In Sections, no building element types are present, only 2D element types (you cannot create building element types in Section, maybe that is the reason why). On the Floor Plan, all element types are on the list (except for Railings).

But now that you point this out, I am starting to wonder whether this is actually a "feature" (AKA "limitation") of the Trace Reference. The Trace Reference Palette does not display any building element types on that list in Section-type Viewpoints. And maybe this is the reason why you cannot snap to the nodes of those building element types in the Trace Reference in Section-type Viewpoints.

Anyway, I will forward this to GRAPHISOFT and hopefully we will get some answer to this.

[Stress Co_]

Thanks Laszlo