topic Re: Object help using FOR NEXT Loop in Libraries & objects

Object help using FOR NEXT Loop

Anonymous — Mon, 03 Nov 2003 15:03:42 GMT

Is everyone still using GDL talk or is this supposed to take the place of that too?

I'll just post in both places hoping someone can help.

I made an adjustable shelf object but I want the object to make some calculations for the user. I want the standards to calculate their spacing. I want the standards to start at 6" from one end of the shelf and stop at 6" from the other end and I want the spacing to be 2'-0" max. I've included some of the code from my object. Thanks for any help.

Michele

!Standards
PEN spen
MATERIAL stmat
ADDz bshigt
FOR k=1 TO nstand
ADDx sfromcorn
BLOCK 1",.5",shigt
DEL 1
ADDx stspace
NEXT k
DEL nstand

!Shelf
PEN shpen
MATERIAL shmat
LINE_TYPE shline
ADDz 6"
BLOCK wid,dep,0.75"

IF nshelves=2.00 THEN GOSUB 500

IF nshelves=3.00 THEN GOSUB 600

IF nshelves=4.00 THEN GOSUB 700

IF nshelves=5.00 THEN GOSUB 800

IF nshelves>5.00 THEN nshelves=5.00
IF nshelves<2.00 THEN nshelves=2
DEL 1

END:!------------------------------------------------

200:!Standards
ADDz 6"
ADDx wid*0.5
BLOCK 1",0.5",shigt
DEL 2
RETURN

300:!Standards
ADDz 6"
ADDx wid*0.333
BLOCK 1",0.5",shigt
ADDx wid*0.666
BLOCK 1",0.5",shigt
DEL 3
RETURN

Re: Object help using FOR NEXT Loop

David Larrew — Mon, 03 Nov 2003 15:34:21 GMT

Michele,

Just glancing at your loop in the provided code... It looks like you have not accounted for all of your "ADD" commands in the loop.

You have 3 "ADD"s and 1 "DEL" within the loop and you are only deleting 1 more "ADD" per loop after the "NEXT".

You could either revise the loop or add to the DEL after the loop.

Re: Object help using FOR NEXT Loop

Anonymous — Mon, 03 Nov 2003 15:43:39 GMT

I had an object that worked but we had to put in how many standards & at what spacing and I wanted to see if I could give the objects some parameters like spacing not larger than 2'-0" and start spaing at 6" from both ends and have the object put in the amount of standards needed. I just don't know how to accomplish this part of it (which is really all of it isn't it .

Thanks for any help,
Michele

Re: Object help using FOR NEXT Loop

David Larrew — Mon, 03 Nov 2003 15:49:53 GMT

Oops - I glanced too quickly. The first tranformation is out of the loop. You might want to use this after the loop instead:

DEL k

It would help to know what is the code doing wrong. Is the overall height/length "Stretchy"? If it is, you will need to do a little calculation up-front (in the Master Script) before doing any geometry to allow for the stretchiness and lock-down the spacing.

Re: Object help using FOR NEXT Loop

David Larrew — Mon, 03 Nov 2003 16:01:55 GMT

If I'm understanding you...

Michele wrote:
IF nshelves>5.00 THEN nshelves=5.00
IF nshelves<2.00 THEN nshelves=2

Should be placed ahead of the GOSUB calls if you are trying to control the "nshelves".

Re: Object help using FOR NEXT Loop

Anonymous — Mon, 03 Nov 2003 16:06:39 GMT

Sorry to confuse anyone. Here is the complete code and please remember I am trying to muddle through coding. I starting making objects in the summer and I get to work on them about 1 hour every 2 weeks if I'm lucky. This object works but we have to put in how many standards & at what spacing and I wanted to see if I could give the objects some parameters like spacing not larger than 2'-0" and start spaing at 6" from both ends and have the object put in the amount of standards needed and at a spacing not larger than 2'-0" when I stretched it in plan. I just don't know how to accomplish this part of it (which is really all of it, isn't it ? It's strecthy in plan but I can't get it to calculate the no. of standards.

Thanks again,
Michele

Here's the code:

!Adjustable Shelves
!3D Script - Imperial
!with parameters
!Michele LaBucki July 2003

wid=A !Width
dep=B !Depth

!Standards
PEN spen
MATERIAL stmat
ADDz bshigt
FOR k=1 TO nstand
ADDx sfromcorn
BLOCK 1",.5",shigt
DEL 1
ADDx stspace
NEXT k
DEL nstand

!Shelf
PEN shpen
MATERIAL shmat
LINE_TYPE shline
ADDz 6"
BLOCK wid,dep,0.75"

IF nshelves=2.00 THEN GOSUB 500

IF nshelves=3.00 THEN GOSUB 600

IF nshelves=4.00 THEN GOSUB 700

IF nshelves=5.00 THEN GOSUB 800

IF nshelves>5.00 THEN nshelves=5.00
IF nshelves<2.00 THEN nshelves=2
DEL 1

END:!------------------------------------------------

200:!Standards
ADDz 6"
ADDx wid*0.5
BLOCK 1",0.5",shigt
DEL 2
RETURN

300:!Standards
ADDz 6"
ADDx wid*0.333
BLOCK 1",0.5",shigt
ADDx wid*0.666
BLOCK 1",0.5",shigt
DEL 3
RETURN

400:!Standards
ADDz 6"
ADDx wid*0.25
BLOCK 1",0.5",shigt
ADDx wid*0.5
BLOCK 1",.5",shigt
ADDx wid*0.75
BLOCK 1",.5",shigt
DEL 4
RETURN

500:!Shelf
LINE_TYPE shline
ADDz 1'-2"
BLOCK wid,dep,0.75"
DEL 1
RETURN

600:!Shelf
LINE_TYPE shline
ADDz 1'-2"
BLOCK wid,dep,0.75"
ADDz 1'-2"
BLOCK wid,dep,0.75"
DEL 2
RETURN

700:!Shelf
LINE_TYPE shline
ADDz 1'-2"
BLOCK wid,dep,0.75"
ADDz 1'-2"
BLOCK wid,dep,0.75"
ADDz 1'-2"
BLOCK wid,dep,0.75"
DEL 3
RETURN

800:!Shelf
LINE_TYPE shline
ADDz 1'-2"
BLOCK wid,dep,0.75"
ADDz 1'-2"
BLOCK wid,dep,0.75"
ADDz 1'-2"
BLOCK wid,dep,0.75"
ADDz 1'-2"
BLOCK wid,dep,0.75"
DEL 4
RETURN

Re: Object help using FOR NEXT Loop

Djordje — Mon, 03 Nov 2003 16:41:24 GMT

Michele wrote:
Is everyone still using GDL talk or is this supposed to take the place of that too?

Both are equally valid; choose your prefered one.

IMHO GDL Talk is more frequented by the hard coders, while here the company is more generally minded.

Then, again, I might be wrong as usual

Re: Object help using FOR NEXT Loop

David Larrew — Mon, 03 Nov 2003 16:45:59 GMT

Michele,

Instead of your GOSUB routines try this FOR NEXT loop instead:

!_____________________________

!Shelf
PEN shpen
MATERIAL shmat
LINE_TYPE shline

leadspc=6.0" !start space from bottom of standards
spcng=(shigt-(leadspc*2))/nshelves !shelf spacing per overall height of standards
If spcng<6.0" then spcng=6.0"
If spcng>24.0" then spcng=24.0"

ADDz leadspc
FOR i=1 TO nshelves
ADDz spcng
BLOCK wid,dep,0.75"
NEXT i

DEL i+1
!_____________________________

This is a little cleaner code. FYI - Anytime you need to calculate quantities, lengths, numbers, etc. from the overall dimensions of an object - you should do the coding in the "Master Script".

Hope this gets you on the right track.