OSnap

[smooth shoes]

what are some different variables for osnap settings?

I've got a triangle and when I draw a line from the endpoints to the corresponding midpoints, I can't snap to the intersection of the three lines. What would make AC do this?

[H-Angus]

what are some different variables for osnap settings?

I've got a triangle and when I draw a line from the endpoints to the corresponding midpoints, I can't snap to the intersection of the three lines. What would make AC do this?

:confused: Not quite understanding what you been by 'endpoint of the corresponding midpoint'.

Are you referring to the OSNAP settings? Type OSNAP on the command line to see the settings dialogue box. Or do you mean something else?

EDIT: I guess you mean the mid point opposite. Is the triangle (lines or plines) all at the same 'Z' height? Can you snap to apparent intersection.

[jaberwok]

OSMODE.
How about the intersection of two lines?

[bcgatti]

If your lines happen to have different Z values then you cannot snap to an "Intersection" or an "Apparent Intersection" between them - even if they look like they intersect in your current view.

[H-Angus]

If your lines happen to have different Z values then you cannot snap to an "Intersection" or an "Apparent Intersection" between them - even if they look like they intersect in your current view.

Apparent intersection will snap to what appears to be the intersection point in the current view regardless of the 'Z' value of the intersecting objects.

[bcgatti]

I stand corrected. I must have had a brain glitch of some sort. I guess that's what can happen when relying on memory when posting instead of testing first. Thanks for the correction.

I just tried out Apparent Intersection on varying Z value lines and it works like a charm.

[smooth shoes]

Yes, the midpoint of the opposite side. Sorry for the confusing thread.

The z values are all at zero. Apparent intersection won't even pick it up. I've copied the same triangle over to another dwg and it works just fine. Another co-worker is having the same problem and produces the same results.

[H-Angus]

Yes, the midpoint of the opposite side. Sorry for the confusing thread.

The z values are all at zero. Apparent intersection won't even pick it up. I've copied the same triangle over to another dwg and it works just fine. Another co-worker is having the same problem and produces the same results.

That's odd. Can you post a dwg file in which it happens. (Just curious now :) ).

One other thing which may be worth a look is where in the drawing are the objects located, are they a long way away from 0,0? If they are then try moving them closer to 0,0 and see if it still occurs.

[jaberwok]

How about the intersection of two lines?

Erase one of the three lines. Now what happens?

[smooth shoes]

Erase one of the three lines. Now what happens?


same thing.

:?:
moving the triangle down to 0,0 worked. that is completely confusing

why in the world would that make a difference?

[jaberwok]

moving the triangle down to 0,0 worked. that is completely confusing
why in the world would that make a difference?

Rounding errors in the calculation of the line intersection. All the positions are calculated based on 0,0,0.

[H-Angus]

same thing.

:?:
moving the triangle down to 0,0 worked. that is completely confusing

why in the world would that make a difference?

What John said ^^^^

You may also notice that hatches sometimes get messed up when they are a long way from 0,0 for the same reason.

Oh well at least it works now. :beer:

[smooth shoes]

Hot Dog!! I learned something today!

Thanks to all who pitched in and got this thing figured out.