Autocad topography

jalba · 14 May 2009, 19:10

ok., now i'm getting a grasp of what i must do. But if you see attached the land boundary is not a perfect square. When applying the "from countours" command, the left hand side is not shaping well (looks like a big ditch).
What to do in this situation?

caddict · 14 May 2009, 20:26

difficult to understand the problem...can you post the .skp file

jalba · 15 May 2009, 12:09

Here's the file. Hope you could understand. The reason it is such in a irregular pattern is because the extreme outer edge represents the boundary.

When applying the command you suggested, i ended up with a big ditch on the left hand side of the drawing.

SAMPLE LAND.

Gaieus · 15 May 2009, 14:58

Note that you can always edit a mesh manually. Turn on hidden geometry to see all the lines making up the mesh, double click on it to edit and simply delete what you don't need (see attached example where I got rid of the extreme left edges - now definitely not in a political meaning of this extreme left ).

You can also make alterations in it with the Smoove tool (also from the Sandbox), outline buildings, roads and such with the Drape tool and create "terraces" or anything (for buldings, roads etc. again) with the Stamp tool.

Untitled-3.zip

jalba · 15 May 2009, 17:18

guess i'll have to go by trial and error.
but...uhh....dumb question.....how to display hidden edges?

Anssi · 15 May 2009, 18:02

@jalba said:

guess i'll have to go by trial and error.
but...uhh....dumb question.....how to display hidden edges?

View menu>Hidden geometry

Anssi

Gaieus · 15 May 2009, 18:30

@jalba said:

guess i'll have to go by trial and error.

And step by step. Don't worry, it's the same for everyone at the beginning. You'll get it eventually.

jalba · 16 May 2009, 14:50

ok...ew issue...
i adjusted my countour lines on Autocad with each step up @ 1m. Checked a side view of it and everything was planar.

When i import it however, some of the lines are sent off canter. Quite annoying!!!!

How can i correct this?

you can see the lines that are of canter by watching the side view. please not that each contour is at a 1m interval.

henderson.skp

caddict · 16 May 2009, 20:14

not sure what you mean by off canter

first thought...in SU are you viewing in orthographic (camera>parallel projection)

i guess you are refering to some of the contours sitting many metres above the main group.

difficult to find an explanation for this...are these misplaced lines properly placed in the autocad file?

Chris Fullmer · 16 May 2009, 20:58

I took the terrain and moved those stray lines straight down until they into the topography where I thought they would go (I could have mis-placed them). Then I ran from contours over the whole thing. And I tidied up the edge on the left by erasing some lines that were created, but not accurate.

Take a look at it and see if that is about what you want.

Chris

henderson tin.skp

jalba · 16 May 2009, 21:02

hehehe you won't believe this but the reason those particular lines were offseting too much was because in the original Acad document, they were classed as 2D polylines instead of normal polylines!!!! lolz

Exploded them and reformed them as normal polylines. Reimported and everything is back to normal.

Thanks anyways peeps!!!

Chris Fullmer · 16 May 2009, 21:17

Oh I'd believe almost anything. Especially when it comes out of autocad.....

Chris

jalba · 17 May 2009, 17:43

@chris fullmer said:

Oh I'd believe almost anything. Especially when it comes out of autocad.....

Chris

HAHAHA!!!! low blow for the acad. You know no matter hw many times i try to figure out 3D rendering in Acad, it is still such a bitch!!!

sowmya · 5 Aug 2011, 01:18

sandbox is sucj a fantastic tool... i a doing a major complicated counctry side countours and its pure magic. One feature which would be handy is when its processing to make the contour, a STOP button to cancel the process if needed...