There is no native function for that. The native min() and max() functions
operate only on list of numbers. You should extract the appropriate
component of the points before calling any of them using list comprehension.

Em qui., 5 de mai. de 2022 15:50, Joe Weinpert joe.weinpert@gmail.com
escreveu:

I suppose you could do something akin to:

max( [for (p=path) p.x] );

or

min( [for (p=path) p.y] );

...adjusted, as needed (above completely untested).

On Thu, May 5, 2022 at 11:49 AM Joe Weinpert joe.weinpert@gmail.com wrote:

--

• Jon Gilbert
  jong@jong.org / jgilbertsjc@gmail.com

The BOSL2 function pointlist_bounds will do it.

On Thu, May 5, 2022 at 2:50 PM Joe Weinpert joe.weinpert@gmail.com wrote:

Thanks.  What you suggested worked perfectly.

minX = min([ for( i = shapeOuter ) i.x ]);
minY = min([ for( i = shapeOuter ) i.y ]);
echo(  minX = minX );
echo(  minY = minY );

On Thu, May 5, 2022 at 3:03 PM Jonathan Gilbert jong@jong.org wrote:

Hi Adrian,

yep.  In vectors.scad

// Function: pointlist_bounds()
// Usage:
//  pt_pair = pointlist_bounds(pts);
// Topics: Geometry, Bounding Boxes, Bounds
// Description:
//  Finds the bounds containing all the points in pts which can be a list of points in any dimension.
//  Returns a list of two items: a list of the minimums and a list of the maximums.  For example, with
//  3d points [[MINX, MINY, MINZ], [MAXX, MAXY, MAXZ]]
// Arguments:
//  pts = List of points.

Thursday, May 5, 2022, 3:51:55 PM, you wrote:

--
have Fun,
Bob                          mailto:roosbob@wybatap.com

Like the other suggestion from Jon Gilbert, this works perfectly, too.
Thanks.  I spent some time earlier trying to find a function within BOSL2,
but there was so much to look through I posted the question and got two
great answers.

bounds = pointlist_bounds( shapeOuter );
echo( bounds = bounds );

ECHO: bounds = [[40.221, 6.25542], [106.812, 65.8355]]

On Thu, May 5, 2022 at 3:52 PM Adrian Mariano avm4@cornell.edu wrote:

If you have suggestions for how the BOSL2 docs can be improved so you
can find stuff you can also make a github issue for that.  :)  There
are some search features to search the docs.  Some of the complex
functions have had doc clarifications driven by user feedback.

On Thu, May 5, 2022 at 4:15 PM Joe Weinpert joe.weinpert@gmail.com wrote:

Reading the docs (and I do that a lot) tells me I am not geeky enough to
know the true purpose of this function or that function.  I can understand
a lot, but not understand just as much.  I do know that there are a yuuuge
number of functions making this a yuuuuuge library.  In fact, when I
started using OpenSCAD a couple of months ago to help with things I could
not do with TinkerCAD, I almost it tossed it out ... until tripping across
BOSL which made OpenSCAD much easier and clearer to use.

On Thu, May 5, 2022 at 4:34 PM Adrian Mariano avm4@cornell.edu wrote:

x_min=min(points*[1,0,0])
y_min=min(points*[0,1,0])
z_min=min(points*[0,0,1])

and similarly max should be faster I suppose

On Fri, 6 May 2022, 00:20 Joe Weinpert, joe.weinpert@gmail.com wrote: