Convert several 3Dpolyline into 3Dface

[Francisc Oliveira]

I'm trying to convert several 3dpoly with 4 points (same plane) into 3dface without sucess.

 

Can anybody help?

Thanks in advance.

[Cad64]

If all 4 points are in the same plane, you can use the CONVTOSURFACE command, or you can use the REGION command.

If the points are not in the same plane, you can use the SURFPATCH command.

 

If none of these commands work, you will need to provide the dwg file for us to look at.

[Francisc Oliveira]

4 minutes ago, Cad64 said:

If all 4 points are in the same plane, you can use the CONVTOSURFACE command, or you can use the REGION command.

If the points are not in the same plane, you can use the SURFPATCH command.

 

If none of these commands work, you will need to provide the dwg file for us to look at.

 

Thanks for your reply. none of the comands worked. the output needs to be a 3dpface (only one per 3dpoly).

Attached file.

 

Thanks in advance.

test.dwg

[Cad64]

The 4 points of the 3D polylines are not in the same plane. I checked a few of them and they were all slightly twisted.

SURFPATCH will work to create a surface, but it won't create a 3D face. You can adjust the properties of the patch and set the U isolines to 1 and V isolines to 1. That will create a patch of 4 poly's, but that's the best you can get.

 

I'm not sure what else to tell you other than maybe try exporting your file to FBX format, import it into Blender to create the faces, then export back out to FBX and import back into Autocad. I don't have time to try it right now, so I'm not sure if it will work or not. I can try it out later, unless someone else has a better idea.

[Cad64]

Actually, I was wrong. You can set the U isolines to 0 and the V isolines to 0 and that will create a single poly face.

[BIGAL]

For a rectang you could also do 2 3dface triangles, but that is 2 planes.

[Francisc Oliveira]

Thanks to all.

 

Is it possible to automate this for the full 3dpoly in the drawing?

 

thanks.

[BIGAL]

Looking at your dwg have you considered making a surface from all the points ? If you use triangulation it will make a surface model of your dwg in 1 go. it will also create a surface between each rectang, If you have access to say CIV3D then it is done, else try this by YMG.

 

You can convert the 3dfaces to a Autocad surface if needed, but the YMG has contours etc built in.

 

;;****************************************************************************;
;; Version V0.5.8                                                             ;
;; C:TIN, Generates Delaunay Triangulation and Voronoi Diagram.               ;
;; C:CONT, Generates Contours from a sset of 3DFACES.                         ;
;; C:GEN, Generates a bunch of points for testing.                            ;
;; C:DEMOZ, Demo of locating yourself in a triangulation.                     ;
;; C:LBL, Generates Label on Major Contour at regular spacing.                ;
;; C:FLBL, Generates Label on All Contours along Fence Lines.                 ;
;; C:DLBL, Generates Label Dynamically (Based on Alan JT routine)             ;
;; C:PROF, Generates a Longitudinal Profile.                                  ;
;; C:XSHAPE, (Chi-shape) Generates a concave boundary around triangulation 

 

 

TriangV0.5.9.LSP

Edited May 31, 2023 by BIGAL

[din388895]

Looks good