Render failure - Marker Felt "j"

Your code shows up the same with both R5 and F6 here.  What release of OpenSCAD are you using?

Jon

I'm really new at Openscad, and am learning so much thanks to the wiki.

I'v encountered what I think is a bug, but I want to be sure.

When I F5 this code, it works fine, but when I F6, the "j" disappears. It only seems to be happening with The Marker Felt font, but I've only tried 3 others.
If I remark out the cube, the "j" doesn't disappear.

Thanks!


font="Marker Felt:style=Thin";
fontsize=10;
letter="j";
width=11;
tileheight=1;


                {
            cube ([14,14,1]);
        translate ([0,0,1])
                    {
         translate([7,7,5])
            rotate([0,180,0])
                   linear_extrude(height=6)
                      translate([0,-4.2,0])text(letter,size=fontsize, font=font);
                    }
                }

---

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Gene Heskett wrote

On Friday 28 May 2021 21:58:06 GaryMcIntyre wrote:

> I'm really new at Openscad, and am learning so much thanks to the
> wiki.
>
> I'v encountered what I think is a bug, but I want to be sure.
>
> When I F5 this code, it works fine, but when I F6, the "j" disappears.
> It only seems to be happening with The Marker Felt font, but I've only
> tried 3 others.
> If I remark out the cube, the "j" doesn't disappear.
>
> Thanks!
>
>
> font="Marker Felt:style=Thin";
> fontsize=10;
> letter="j";
> width=11;
> tileheight=1;
>
>
>                 {
>             cube ([14,14,1]);
>         translate ([0,0,1])
>                     {
>          translate([7,7,5])
>             rotate([0,180,0])
>                    linear_extrude(height=6)
>                       translate([0,-4.2,0])text(letter,size=fontsize,
> font=font);
>                     }
>                 }
>
>

My best guess and thats all it is, is that you are hiding the j inside
the cube. Reducing the cubes size might make it appear?
>
>
> --
> Sent from: http://forum.openscad.org/


Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>
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nophead wrote

Have you got the same font though? Perhaps the J has a self intersection in
its boundary. If that is the case applying a very small expansion with
offset might fix it as Clipper will sort out 2D self intersections.

On Sat, 29 May 2021 at 08:11, jon <[hidden email]> wrote:

> Your code shows up the same with both R5 and F6 here.  What release of
> OpenSCAD are you using?
>
> Jon
> On 5/28/2021 9:58 PM, GaryMcIntyre wrote:
>
> I'm really new at Openscad, and am learning so much thanks to the wiki.
>
> I'v encountered what I think is a bug, but I want to be sure.
>
> When I F5 this code, it works fine, but when I F6, the "j" disappears. It
> only seems to be happening with The Marker Felt font, but I've only tried 3
> others.
> If I remark out the cube, the "j" doesn't disappear.
>
> Thanks!
>
>
> font="Marker Felt:style=Thin";
> fontsize=10;
> letter="j";
> width=11;
> tileheight=1;
>
>
>                 {
>             cube ([14,14,1]);
>         translate ([0,0,1])
>                     {
>          translate([7,7,5])
>             rotate([0,180,0])
>                    linear_extrude(height=6)
>                       translate([0,-4.2,0])text(letter,size=fontsize,
> font=font);
>                     }
>                 }
>
>
> ------------------------------
> Sent from the OpenSCAD mailing list archive <http://forum.openscad.org/>
> at Nabble.com.
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to [hidden email]
>
> _______________________________________________
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> To unsubscribe send an email to [hidden email]
>

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jon_bondy wrote

Your code shows up the same with both R5 and F6 here.  What release of
OpenSCAD are you using?

Jon

On 5/28/2021 9:58 PM, GaryMcIntyre wrote:

> I'm really new at Openscad, and am learning so much thanks to the wiki.
>
> I'v encountered what I think is a bug, but I want to be sure.
>
> When I F5 this code, it works fine, but when I F6, the "j" disappears.
> It only seems to be happening with The Marker Felt font, but I've only
> tried 3 others.
> If I remark out the cube, the "j" doesn't disappear.
>
> Thanks!
>
>
> font="Marker Felt:style=Thin";
> fontsize=10;
> letter="j";
> width=11;
> tileheight=1;
>
>
>                 {
>             cube ([14,14,1]);
>         translate ([0,0,1])
>                     {
>          translate([7,7,5])
>             rotate([0,180,0])
>                    linear_extrude(height=6)
> translate([0,-4.2,0])text(letter,size=fontsize, font=font);
>                     }
>                 }
>
>
> ------------------------------------------------------------------------
> Sent from the OpenSCAD mailing list archive
> <http://forum.openscad.org/> at Nabble.com.
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to [hidden email]

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Interesting.  Then why does the "J" appear with both F5 and F6 on my Windows system using version 2021.01

Jon

If you zoom in to the section marked by the attached screenshot
you'll find the reason for the issue.

ciao,
  Torsten.

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Ah.  Good point.  I guess when there is an inexact font match, the system goes with the nearest best, without a warning message.

Fontconfig performs matching by measuring the distance from a provided pattern to all of the available fonts in the system. The closest matching font is selected. This ensures that a font will always be returned, but doesn't ensure that it is anything like the requested pattern.

Sometimes it's what you want.  Sometimes not so much.