topic Re: Drawing in perspective in AutoCAD Forum

Drawing in perspective

BrithneyMoralesJaimes — Tue, 12 Apr 2016 17:14:31 GMT

Hello! I have an issue with my drawing. I design my floor plans on 2D but when I change the view all the lines go crazy. Do you know why this happens? Thank you so much.

Re: Drawing in perspective

john.vellek — Tue, 12 Apr 2016 17:43:49 GMT

HI BMJ94

In looking at your post I am suspect of some graphic card settings. Could you try to turn off line smoothing and maybe even Hardware Acceleration to see if eliminates the problem for you?

Please hit the Accept as Solution button if my post fully solves your issue or answers your question.

Re: Drawing in perspective

Anonymous — Tue, 12 Apr 2016 18:55:13 GMT

@BMJ94 wrote:
Hello! I have an issue with my drawing. I design my floor plans on 2D but when I change the view all the lines go crazy. Do you know why this happens? Thank you so much.

It looks like the topo's you brought in came in with a Z elevation way above zero. In the topdown method of drawing, you probably snapped to lines that were way up in the air. You could try using FLATTEN to get everything back to a zero elevation if that's your goal.

Re: Drawing in perspective

3wood — Tue, 12 Apr 2016 21:24:22 GMT

Have you tried command FLATTEN?

Re: Drawing in perspective

TheCADnoob — Tue, 12 Apr 2016 21:35:31 GMT

i recently had a drawing that i had to correct a similar issue on. Flatten didnt work for me but luckily the geometry was realtivley simple. I just selected everything and changed all the Z values to 0.

Re: Drawing in perspective

BrithneyMoralesJaimes — Tue, 12 Apr 2016 23:05:22 GMT

Hi john.vellek. I have them already off, so I turned them on and then off again; but nothing changes.

Re: Drawing in perspective

john.vellek — Tue, 12 Apr 2016 23:30:01 GMT

Hi BMJ94, If the problem is not a graphics issue then as per the other posts, it is likely that some of your entities have an erroneous Z value (height). Check out the prior posts to correct this. Flatten works pretty well but if the drawing is simple you might select all the entities and enter a new Z value as per @TheCADnoob's suggestion.