topic Re: WALL_RESOL in Libraries & objects

WALL_RESOL

Anonymous — Wed, 24 May 2023 09:52:50 GMT

Hello,
I wrote a very simple library part that displays the wall resolution
of curved walls. It is actually a window. The 2D script is as follows.
pen p2d
line2 0,0,0,0

!!!!print wall_resol

define style "style-1" fnt,fntsz,5,0
set style "style-1"

add2 0,2*C_

if flp then mul2 1,-1

text2 0,0,str(wall_resol,1,0)

What is strange is that if I insert this "window" into a straight wall
the lib part reports the resolution as 36. The same thing if inserted
into a three sided polywall. Does anyone know why a straight wall
has a resolution of 36 ?
I would like to point out that a curved wall, regardless of thickness,
having a radius of less than 13 1/2" my lib part reports its resolution as 36.
A curved wall with a radius greater than 13 1/2" my lib part reports its
resolution as greater than 36. For example, a curved wall with a radius of
50'-0" my lib part reports its resolution as 245.
Thank you,
Peter Devlin

Re: WALL_RESOL

Barry Kelly — Mon, 22 Nov 2010 02:26:49 GMT

Hi Peter,
I can't say for sure but I'd be guessing (as I'm sure you have) that 36 is a built-in minimum resolution.
As the radius gets larger you will need more segments to make it appear curved hence the increase in the resolution.
It would seem logical for a straight wall to have a resolution of 1 but that might not be logical to the program so it defaults back to 36.
Barry.

Re: WALL_RESOL

Anonymous — Mon, 22 Nov 2010 15:51:25 GMT

Hello Barry,
Thanks for posting back.
Lazlo writes in his piece on global GDL parameters:

WALL_RESOL
Old name: J~ ;Type: numerical (positive integer value) ;Possible range: 3 and up ; Returns the resolution of the wall body in 3D in which the
Window/Door is placed. Since at least 3 sides are needed for any 3D body the minimum value is 3. ; Note: the variable is effective in 3D only. Any
number created while in the Floor Plan or Section/Elevation Windows is not applicable.

I don't know what this last sentence means. I don't know how to
make a three sided wall that my lib part reports as having a resolution of
less than 36. I've tried a three sided polywall and a three sided trapezoid wall.
This is all a bit mysterious.
Thanks,
Peter Devlin