Extruder des faces 3D

djn06 · le 22 juin 2012

:blink:

Salut à tous,

Voilà un petit moment que je rame grave, j'm'explique, j'ai fait avec Mensura plusieurs TN qui correpondent à des couches géologiques, Mensura me fait des faces 3D que je récupère dans autocad (j'ai 2012 et Map 3D 2012..) et j'ai un problème en voulant extruder ces faces, y'a t'il une transformation à faire avant ?

Le but final est de faire une coupe à travers ces couches et il faut que ce soit des solides ....

Je suis pas très calé en 3D, si une âme charitable voulait bien m'aider ce serait formidable !!!

:)

mikL44 · le 22 juin 2012

Salut

Y'a F2S v1.1, faut que je retrouve le lien du lisp

lovecraft · le 22 juin 2012

Bonjour,

J'avais fait cette vidéo , il y a quelques temps qui explique ce que tu recherches à réaliser.

Cordialement,

Laurent

mikL44 · le 22 juin 2012

;|   F2S.lsp  (Faces-to-Solid)
Creates a single ACIS solid from selected 3dfaces, touching or not


by Bill Gilliss
bill at realerthanreal dot com
Comments and suggestions always welcome.

No warranty, either expressed or implied, is made as to the fitness of
this information for any particular purpose.  All materials are to be
considered 'as-is', and use thereof should be considered as at your own
risk.

Release Notes:
1.00  8/23/2006  - Original release.
1.01  8/26/2006  - SPLFRAME=1 to be sure faces are visible and therefore selectable.
                - polyline area threshold increased to prevent solid creation errors.
1.02  8/28/2006  - international syntax fix.
1.03  7/13/2007  - Option added to erase faces as they are converted to solids.
1.10   3/8/2010  - 2010 compatible (change in AREA command) and rewritten as modular code
                - ExpressTools progress bar added, if ET installed
                - GRIDMODE set to prevent flicker

Summary:
 As in M2S.lsp, the solid is created on the current layer by projecting each
selected face vertically "down" the CURRENT z-axis to a plane a user-specified
distance below the lowest vertex. To assure that all parts of the mesh are
generated as solids, this distance can not be zero, but the solid can be SLICEd
later if need be.
 Quite complex solids can be created by projecting the faces along several different
axes, then using INTERFERE or INTERSECT to create the final solid from the
intermediate ones.

Notes:
- Thanks to Gilles Chanteau, Dr. Heinz-Joachim Schulz, and Robert Morin
- Works with all releases that support 3D solids.
- If adjacent faces do not have identical coordinates, there will be very
small gaps or overlaps between the solids derived from them, which can
cause AutoCAD to fail to be able to union the solids. Common results:
     "Inconsistent containment of intersection curve."
     "Inconsistent information in vertex and coedge coordinates."
     "Inconsistent edge-face relationships."
     "Inconsistent face-body relationships."
     "Curves osculate at vertex - cannot evaluate order."
 The best way to fix the face vertices before running F2S is to use 3DSOUT
with Auto-Welding turned on with an appropriate threshold, then 3DSIN to bring
the welded mesh back into AutoCAD, then EXPLODE and run F2S. The larger the
threshold distance, the fewer the problems.
  3DS MAX and Rhino can also do the vertex welding when importing an AutoCAD file.
If one of these are available, save or wblock the faces to a new DWG file, and then
import the new file with Weld turned on with an appropriate threshold.
Export to 3DS format, and then use 3DSIN in AutoCAD.
  The ANNEAL command in EasySite from Cadeasy Corp will also fix the 3dface vertices
with a user-specified tolerance, without leaving AutoCAD.
  If problematic solids do persist, copying them a small distance and then
unioning the copies with the original will usually fill the gaps and resolve
these problems.
  Some manual unioning might still be necessary with any of these approaches --
deal with it.

Keywords: AutoCAD AutoLISP 3dsolid 3dface face convert
=========================================================================
|;
(defun c:f2s (/ ss ent ed bot bottom partialsolid R17 n partialsolid num
                low10 low11 low12 low13
                p1 p2 p3 p4 c1 c2 c3 c4 b1 b2 b3 b4
                soldepth sspartial ssfinal ETloaded
                *solidhist *cmdecho *osmode *blipmode *splframe
                myerror setup getFaces getLowestVertex getThickness initializeSets
                createSolids unionSolids getPoints area3p F2SLoft
                )

;;-----subroutines----------------
(defun myerror (msg)
 (princ msg)
 (setvar 'osmode    *osmode)
 (setvar 'blipmode  *blipmode)
 (setvar 'delobj    *delobj)
 (setvar 'splframe  *splframe)
 (setvar 'solidhist *solidhist)
 (setvar 'gridmode *gridmode)
 (if ETloaded (acet-ui-progress))
 (command "_.undo" "_end")
 (setq *error* olderror)
 (setvar 'cmdecho *cmdecho)
 (princ)
)


(defun setup ()
 (command "_.undo" "_begin")
 (setq *cmdecho (getvar 'cmdecho))
 (setq *osmode   (getvar 'osmode))
 (setq *blipmode (getvar 'blipmode))
 (setq *delobj   (getvar 'delobj))
 (setq *splframe (getvar 'splframe))
 (setq *gridmode (getvar 'gridmode))
 (setvar 'cmdecho 0)
 (setvar 'osmode 0)
 (setvar 'blipmode 0)
 (setvar 'delobj 1)
 (setvar 'splframe 1)  ;; edges must be visible for faces to be selectable
 (setvar 'gridmode 0)  ;; avoids flicker 
 (command "_.regen")
 (if (< 16 (atoi (substr (getvar "acadver") 1 2))) (setq R17 T))
 (if R17 (setq *solidhist (getvar 'solidhist)))
 (if R17 (setvar 'solidhist 0))
 (if (member "acetutil.arx" (arx))
   (setq ETloaded T)
   )
 (setq olderror *error*)
 (setq *error* myerror)

(alert
"Face-to-Solid loaded. Type  F2S  to run the program.
\nNote: if many faces are selected, AutoCAD may crash due to memory
limitations when unioning the many solids created from them, so please
\nSAVE ALL OPEN DRAWINGS \n
before using this routine with large numbers of faces. The routine
will prompt for automatic or manual unioning; select manual to do the
unioning yourself in smaller increments if automatic causes problems.
\nAlso, see the introductory comments in the LISP file about cleaning up
face coordinates to avoid unioning errors.")
)


(defun getFaces ()
 (prompt "Select 3dface(s) to solidify: ")
 (setq ss (ssget '((0 . "3dface"))))
 (initget 1 "Yes No")
 (setq erasefaces (getkword "Erase faces [Yes or No]: "))
)

(defun getLowestVertex ()
 (setq ent (ssname ss 0))
 (setq ed (entget ent))
 (setq bottom (caddr (trans (cdr (assoc 10 ed)) 0 1)))

 ;;find lowest vertex in selection set of faces
 (setq n 0)
   (while
   (< n (sslength ss))
   (progn
     (setq ent (ssname ss n))
     (setq ed (entget ent))
     (setq low10 (caddr (trans (cdr (assoc 10 ed)) 0 1)))
     (setq low11 (caddr (trans (cdr (assoc 11 ed)) 0 1)))
     (setq low12 (caddr (trans (cdr (assoc 12 ed)) 0 1)))
     (setq low13 (caddr (trans (cdr (assoc 13 ed)) 0 1)))
     (setq bottom (min bottom low10 low11 low12 low13))
     (setq n (1+ n))
     );progn
 );while
)

(defun getThickness ()
 (setq soldepth 0)
 (while
    (zerop soldepth)
    (progn
      (setq soldepth (getdist "\nEnter desired thickness of solid below lowest vertex <1>: "))
      (if (not soldepth) (setq soldepth 1.0))
      (if (zerop soldepth)
         (princ "\nThickness can be small, but not zero. (Slice it later, if need be.)"))
      );progn
    );while
 (setq bot (- bottom (abs soldepth)))
)

(defun initializeSets ()
 (setq sspartial (ssadd))  ;initialize partial set of extruded segments to be unioned together
 (setq ssfinal (ssadd))    ;initialize final set of solids

 (princ "\nUnioning large number of small solids can lock up AutoCAD")
 (princ "\nif memory limits are exceeded. Would you like to continue")
 (princ "\nwith automatic unioning, or union them manually?")
 (initget 1 "Auto Manual")
 (setq reply (getkword " Auto or Manual?"))
 (setq reply (substr reply 1 1))
)

(defun createSolids ()
 (if ETloaded (acet-ui-progress "Progress: " (sslength ss)))
 (setq num (sqrt (sslength ss)))  ;;number of partial solids to create
 (setq n 0)
 (setq partialsolid 0)
 (setq time1 (getvar "DATE"))
 (while
   (< n (sslength ss))
   (progn
     (getPoints)
     (F2SLoft c1 c2 c3 b1 b2 b3)
     (F2SLoft c3 c4 c1 b3 b4 b1)
     (if (= erasefaces "Yes") (entdel ent))
     (setq partialsolid (1+ partialsolid))

     (if
      (or (>= partialsolid num) (= n (1- (sslength ss))))
       (if (= reply "A")
         (progn
           (setq partialsolid 0)
           (command "_.union" sspartial "")
           (ssadd (entlast) ssfinal)
           (setq sspartial (ssadd))   ;;re-initialize with empty set
           );progn
         );if
       );if

     (if ETloaded (acet-ui-progress n))
    (setq n (1+ n))
   );progn
 );while
)

(defun unionSolids ()
 (if (= reply "A")
   (progn
     (grtext -1 "Unioning final solid...")
     (command "_.union" ssfinal "")
     );progn
   );if
)

(defun getPoints()
 (setq ent (ssname ss n))
 (setq ed (entget ent))
 (setq p1 (assoc 10 ed)                 ;first vertex of face
       p2 (assoc 11 ed)
       p3 (assoc 12 ed)
       p4 (assoc 13 ed))
 (setq c1 (trans (cdr p1) 0 1)          ;top coordinates
       c2 (trans (cdr p2) 0 1)
       c3 (trans (cdr p3) 0 1)
       c4 (trans (cdr p4) 0 1))
 (setq b1 (list (car c1) (cadr c1) bot) ;bottom coordinates
       b2 (list (car c2) (cadr c2) bot)
       b3 (list (car c3) (cadr c3) bot)
       b4 (list (car c4) (cadr c4) bot))
)


(defun F2SLoft (r1 r2 r3 s1 s2 s3 / e1 extr highest)
 (if (> (area3p s1 s2 s3) 0.000001) ;;avoid problems with tiny solids
   (progn
     (command "_.pline" s1 s2 s3 "_close")
     (setq highest (max (caddr r1) (caddr r2) (caddr r3)))
     (setq extr (- highest bot))
     (if
       R17
       (command "_.extrude" (entlast) "" extr)     ;;2007 and higher
       (command "_.extrude" (entlast) "" extr 0.0) ;;2006 and below
       );endif

     (if                  ;;don't slice if top is flat
      (not
       (and
         (equal (caddr r1) (caddr r2))
         (equal (caddr r1) (caddr r3))
         );and
        );not
      (command "_.slice" (entlast) "" "_3points" r1 r2 r3 s1)
      );if
    (ssadd (entlast) sspartial)
    );progn
   );if
 );defun


(defun area3p (p1 p2 p3 / a b c s)
(setq
	a (distance p1 p2)
	b (distance p2 p3)
	c (distance p3 p1)
	s (* 0.5 (+ a b c))
)
(sqrt
	(*
		s
		(- s a)
		(- s B)
		(- s c)
	)
)
)


;;========== MAIN ROUTINE =========================
 (setup)
 (getFaces)
 (getLowestVertex)
 (getThickness)
 (initializeSets)
 (createSolids)
 (unionSolids)
 (myerror nil) ;;cleanup

);defun F2S

djn06 · le 22 juin 2012

:D

Merci pour vos réponses rapides !!!!!

Je ne suis pas calé en lisp....

la vidéo de Lovecraft par contre, excellent !!! Merci beaucoup, y'a plus qu'a maintenant !

:)

mikL44 · le 22 juin 2012

:D
Merci pour vos réponses rapides !!!!!
Je ne suis pas calé en lisp....
la vidéo de Lovecraft par contre, excellent !!! Merci beaucoup, y'a plus qu'a maintenant !
:)

Tu copies colle le code dans un fichier bloc note, et tu renommes ton fichier en .lsp.

Tu prends le fichier "nomdetonfichier.lsp" dans l'explorateur et tu le déposes dans ta fenetre autocad.

Ensuite tu tapes dans ta ligne de commande F2S, tu suis ce que le programme de te demande, et tes face3D seront transformées en 3Dsolid.

Je viens de le tester ca fonctionne nickel

lecrabe · le 22 juin 2012

Hello

J'utilise la routine F2S re-ecrite/amelioree en VLisp par Gilles

Encore Merci Gilles, lecrabe

 


;; F2S New Version par GC le 16/04/2010
;; Confere les autres versions de F2S
;; http://cadxp.cadmag.info/modules.php?op=modload&name=XForum&file=viewthread&tid=27517#pid120892
;; J'ai essayé d'optimiser F2S (utilisation des méthodes vla-* et nouvel algorithme d'union des solides). 
;; La routine est environ deux fois et demi plus rapide.

;; J'ai aussi essayé avec .NET, mais le gain de performance n'est pas aussi important que je l'espérais. 
;; Le fait de partir de faces 3d nécessite de créer un solide par face puis d'unir tous ces solides.
;;

(vl-load-com)

(defun c:F2S (/		*error*	  clockwise-p	      3d-coord->pt-lst
      Triang2dArea	  space	    loft      ss
      alt	count	  coords    p1	      p2
      p3	p4	  lowest    solid     flst
      cnt	previous  slst	    tmp	      n
      i
     )

 ;; Redéfinition locale de *error*
 (defun *error* (msg)
   (or	(= msg "Fonction annulée")
(princ (strcat "\nErreur: " msg))
   )
   (setvar 'solidhist shist)
   (vla-EndUndoMark *acdoc*)
   (princ)
 )

 ;; Clockwise-p Retourne T si les points p1 p2 et p3 tournent dans le sens horaire
 (defun clockwise-p (p1 p2 p3)
   (< (sin (- (angle p1 p3) (angle p1 p2))) -1e-14)
 )

 ;; 3d-coord->pt-lst Convertit une liste de coordonnées 3D en liste de points
 (defun 3d-coord->pt-lst (lst)
   (if	lst
     (cons (list (car lst) (cadr lst) (caddr lst))
    (3d-coord->pt-lst (cdddr lst))
     )
   )
 )

 ;; Triang2dArea retourne l'aire du triangle (points 2d)
 (defun Triang2dArea (p1 p2 p3)
   (/ (- (* (- (car p2) (car p1)) (- (cadr p3) (cadr p1)))
  (* (- (car p3) (car p1)) (- (cadr p2) (cadr p1)))
      )
      2.
   )
 )

 ;; extrusion et section des faces
 (defun loft (p1 p2 p3 / pline reg solid tmp)
   (if	(clockwise-p p1 p2 p3)
     (setq tmp	p2
    p2	p3
    p3	tmp
     )
   )
   (setq height (max (caddr p1) (caddr p2) (caddr p3))
  pline	 (vlax-invoke
	   space
	   'AddLightweightPolyline
	   (list (car p1)
		 (cadr p1)
		 (car p2)
		 (cadr p2)
		 (car p3)
		 (cadr p3)
	   )
	 )
   )
   (vla-put-Closed pline :vlax-true)
   (vla-put-Elevation pline alt)
   (setq reg	(car (vlax-invoke space 'AddRegion (list pline)))
  solid	(vla-AddExtrudedSolid space reg (- height alt) 0.0)
   )
   (if	(not (and (equal (caddr p1) (caddr p2) 1e-9)
	  (equal (caddr p1) (caddr p3) 1e-9)
     )
)
     (vla-SliceSolid
solid
(vlax-3d-point p1)
(vlax-3d-point p2)
(vlax-3d-point p3)
:vlax-false
     )
   )
   (vla-Delete reg)
   (vla-Delete pline)
   (vla-update solid)
   solid
 )

 ;; fonction principale
 (or *acdoc*
     (setq *acdoc* (vla-get-ActiveDocument (vlax-get-acad-object)))
 )
 (setq	space (vla-get-ModelSpace *acdoc*)
shist (getvar 'solidhist)
 )
 (if (setq ss (ssget '((0 . "3DFACE"))))
   (progn
     (initget 6)
     (setq alt
     (cond
       ((getdist
	  "\nEntrez la distance sous le point le plus bas <1>: "
	)
       )
       (1.)
     )
     )
     (initget 1 "Auto Manuel")
     (setq opt (getkword "\nUnion des solides [Auto/Manuelle]: "))
     (vla-StartUndoMark *acdoc*)
     (setvar 'solidhist 0)
     (vlax-for	f (setq ss (vla-get-ActiveSelectionSet *acdoc*))
(setq coords (3d-coord->pt-lst (vlax-get f 'Coordinates))
      p1     (car coords)
      p2     (cadr coords)
      p3     (caddr coords)
      p4     (cadddr coords)
      lowest (if lowest
	       (apply 'min (cons lowest (mapcar 'caddr coords)))
	       (apply 'min (mapcar 'caddr coords))
	     )
)
(or (< (abs (Triang2dArea p1 p2 p3)) 1e-9)
    (setq flst (cons (list p1 p2 p3) flst))
)
(or (< (abs (Triang2dArea p3 p4 p1)) 1e-9)
    (setq flst (cons (list p3 p4 p1) flst))
)
     )
     (vla-delete ss)
     (setq alt (- lowest alt))
     (and acet-ui-progress
   (acet-ui-progress "Extrusion..." (length flst))
     )
     (setq n 0)
     (foreach l flst
(setq slst (cons (apply 'loft l) slst))
(and acet-ui-progress (acet-ui-progress (setq n (1+ n))))
     )
     (and acet-ui-progress (acet-ui-progress))
     (if (= opt "Auto")
(progn
  (and acet-ui-progress
       (acet-ui-progress "Union..." (length slst))
  )
  (setq i 0)
  (while (< 1 (setq cnt (length slst)))
    (if	(= 1 (rem cnt 2))
      (progn
	(vla-Boolean (cadr slst) acUnion (car slst))
	(and acet-ui-progress
	     (acet-ui-progress (setq i (1+ i)))
	)
	(vla-update (cadr slst))
	(setq slst (cdr slst)
	      cnt  (1- cnt)
	)
      )
    )
    (setq n   0
	  tmp nil
    )
    (repeat (/ cnt 2)
      (vla-Boolean (nth n slst) acUnion (nth (1+ n) slst))
      (and acet-ui-progress (acet-ui-progress (setq i (1+ i))))
      (vla-update (nth n slst))
      (setq tmp	(cons (nth n slst) tmp)
	    n	(+ 2 n)
      )
    )
    (setq slst tmp)
  )
  (and acet-ui-progress (acet-ui-progress))
)
     )
     (setvar 'solidhist shist)
     (vla-EndUndoMark *acdoc*)
   )
 )
 (princ)
)

mikL44 · le 22 juin 2012

Hello

J'utilise la routine F2S re-ecrite/amelioree en VLisp par Gilles

Encore Merci Gilles, lecrabe

Effectivement celui la marche tres bien, merci Gilles et merci lecrabe de l'avoir reposter.

djn06 · le 22 juin 2012

:D

Merci Lecrabe, mais je m'en sors bien comme ça,

Bon week-end !!

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