[OpenSCAD] How to create box with one side tilted

[gmorchio]

Dear all, I'm struggling trying to figure it out to accomplish the following
box, that is in irregular shape, like the following picture
<Loading Image...> . Another view
<Loading Image...>

Looks like the typical burger box, but with one side more tilted that the
other mirrored one.

How I can do it? I have tried with polygon, but it is quite complex task.
Any insight would be grateful!

Thanks

//Giovanni



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[Antonio Bueno]

Giovanni--

A good approach for that kind of shape is to start in 2D. The top and the
bottom are rounded rectangles, and the "middle" of your box is another one
(although with different size, and maybe inclined?).

So I started with that shape in 2D:

module roundrec(size=[60, 40], radius=5, center=true)
{
offset(radius) offset(-radius) square(size, center);
}

To move it around I gave it a bit of volume: linear_extrude(height=0.001)
roundrec();

Doing it three times with some movement:
translate([0, 0, 15]) linear_extrude(height=0.001) roundrec();
translate([0, 1, 0]) rotate([5, 0, 0]) linear_extrude(height=0.001)
roundrec([70, 53]);
translate([0, 0, -15]) linear_extrude(height=0.001) roundrec();

With a hull() around that, you get this:

[image: rounded_box.png]

HTH

Post by gmorchio
Dear all, I'm struggling trying to figure it out to accomplish the following
box, that is in irregular shape, like the following picture
<http://forum.openscad.org/file/t2322/box-1.jpeg> . Another view
<http://forum.openscad.org/file/t2322/box-2.jpeg>
Looks like the typical burger box, but with one side more tilted that the
other mirrored one.
How I can do it? I have tried with polygon, but it is quite complex task.
Any insight would be grateful!
Thanks
//Giovanni
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[gmorchio]

Antonio, great job! woah, and how can now convert it into a box, i have to
replicate, do a differrence() or something to make it as a shell?



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[Antonio Bueno]

Indeed, that'd be a way to do it :-)

[image: rounded_box_2.png]

Post by gmorchio
Antonio, great job! woah, and how can now convert it into a box, i have to
replicate, do a differrence() or something to make it as a shell?
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[gmorchio]

Thanks again Antonio. Last question, how did you create the cube to see thru
the internal? Nice!



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[Antonio Bueno]

I just added a cube at the end of the box difference(). The see-through
effect is equivalent to the debug modifier
<https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/The_OpenSCAD_Language#Debug_Modifier>
(#).
I *really* don't like the default pink of that modifier, so I did my own
version with this module:

module peek(alpha=0.2)
{
children();
color([0.5, 0.5, 0.5, alpha]) %children();
}

Post by gmorchio
Thanks again Antonio. Last question, how did you create the cube to see thru
the internal? Nice!
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