topic Re: Mesh to contour lines in Modeling

Mesh to contour lines

Anonymous — Thu, 25 May 2023 15:04:03 GMT

Is there a easy way to make contours lines from a 3d mesh?
Thanks

Archicad 14

Re: Mesh to contour lines

Anonymous — Wed, 08 Jun 2011 00:44:41 GMT

Hi this is my little reminder list for the Office

1) Use mesh tool to draw a mesh around the perimeter of your site

2) Use space bar and spline / p-line tool to draw contour lines from survey dwg (Making sure that the contour lines go beyond the Boundary Line)

3) Whilst in mesh tool hold space bar and click on selected contour to add it to the mesh ( select add all ridges in little dialogue box )

4) 4 - Right click on a contour node and select the 'z' value icon and asign the rl you want to the contour (select assign to all in dialogue box)

5) 5 - Ensure you manually select the two endpoints of the contour and change the RL individually ensuring assign to all is not selected as it will assign the value to the whole perimeter of the mesh

Re: Mesh to contour lines

Barry Kelly — Wed, 08 Jun 2011 01:29:39 GMT

What Wayne said will help you add contours to a mesh and alter its topography.
But if you want to generate contours from an existing mesh try this.

http://archicad-talk.graphisoft.com/viewtopic.php?p=177385&highlight=contour#177385

Barry.

Re: Mesh to contour lines

Anonymous — Wed, 08 Jun 2011 01:29:58 GMT

wayneh wrote:
Hi this is my little reminder list for the Office

1) Use mesh tool to draw a mesh around the perimeter of your site

2) Use space bar and spline / p-line tool to draw contour lines from survey dwg (Making sure that the contour lines go beyond the Boundary Line)

3) Whilst in mesh tool hold space bar and click on selected contour to add it to the mesh ( select add all ridges in little dialogue box )

4) 4 - Right click on a contour node and select the 'z' value icon and asign the rl you want to the contour (select assign to all in dialogue box)

5) 5 - Ensure you manually select the two endpoints of the contour and change the RL individually ensuring assign to all is not selected as it will assign the value to the whole perimeter of the mesh

This doesnt seem to form contour lines of the same value?

Not quite what im after thanks though I learnt another way to add Z values to a mesh.

Re: Mesh to contour lines

Anonymous — Wed, 08 Jun 2011 01:33:21 GMT

Barry wrote:
What Wayne said will help you add contours to a mesh and alter its topography.
But if you want to generate contours from an existing mesh try this.

http://archicad-talk.graphisoft.com/viewtopic.php?p=177385&highlight=contour#177385

Barry.

Someone at work showed me this way. Is there a easier way?

Thanks anyway

Re: Mesh to contour lines

Conrado Dominguez — Fri, 10 Jun 2011 04:24:55 GMT

wayneh wrote:
Hi this is my little reminder list for the Office

1) Use mesh tool to draw a mesh around the perimeter of your site

2) Use space bar and spline / p-line tool to draw contour lines from survey dwg (Making sure that the contour lines go beyond the Boundary Line)

3) Whilst in mesh tool hold space bar and click on selected contour to add it to the mesh ( select add all ridges in little dialogue box )

------After executing this step this step, a dialog box pop up with the message " POLYGON BOUNDRY INTERSECTS ITSELF" and two choices: "Regularize and Keep Polygon"
After selecting either choice, a straight line appears. creating a closed polygon with in itself is a new mesh on top of the original mesh. Not a countour line to which I could apply a 'z' value.----------

Any clue what I am doing wrong?

Re: Mesh to contour lines

Barry Kelly — Fri, 10 Jun 2011 05:30:15 GMT

Make sure that the polyline/spline that you are using to magic wand the conours does not loop back over itself and make sure that the ends of the line pass over the side boundaries of your mesh.

A little tip - you want the polyline/splines that you are magic wanding for the contours to have as few nodes as possible.
The more there are the more chance there will be for errors and the more nodes you will have in your final mesh.
I find that I usually just draw a spline by picking a few point on the survey drawing rather than magic wanding on it and ending up with hundreds of nodes on a contour.
Add just enough nodes to get the shape of the contour that you want.
And as Wayne said make sure they extend beyond the sides of the survey boundaries.

Barry.

Re: Mesh to contour lines

Conrado Dominguez — Sat, 11 Jun 2011 05:10:46 GMT

Barry:
Nothing works.
As a last resort, I sent a file to Graphisoft support to see if they can help.
The suggestion about placing as little splines points inside the mesh is a good one.
Now all I have to do is make it work.

Thanks for your efforts

Re: Mesh to contour lines

Anonymous — Wed, 03 Jul 2013 01:14:03 GMT

Sorry if this is a bit late, but I found that by opening up the mesh in the selection settings and under 'floor plan and section', it says 'ridge selection'.

Change that option to 'show user defined ridges'.

Hope this helped, it was what I needed. Not sure if that was what you were looking for.