Happy Easter!

It is, of course, a short hop from cylindrical wedges to conic sections.

#origami @origami

Origami pairs, next issue: Crabs

Fiddler Crab, designed by Brian Chan, folded by me from 50 cm double tissue. Crab, designed by Toshio Gōhara, folded by me from 15 cm Satogami.

#origami
#origamiart

¿Cuántas personas aquí escribieron su tesis, o prepararon ese CV con que consiguieron trabajo gracias a LibreOffice?
¿Cuántas personas sueñan con redes sociales más sanas gracias a Mastodon?
Ejemplos sobran.

Hoy contribuyo con otro pequeño granito de arena al entretenimiento público.

Mi segundo libro, Origami en edición Fediverso. PDF optimizado para pantallas pequeñas, y EPUB para leer en dispositivos de libro electrónico (o en el móvil con alguna app de f-droid).

19 relatos para descargar *gratis* desde una nube #nextcloud. Solo para el fediverso

https://cloud.undernet.uy/s/2H3eBWWebxXfXnd

De nuevo, con letra accesible para astigmatismo y baja visión. Desde #Uruguay, con cariño.

Si les gusta, y les apetece, los comentarios o reseñas serán bienvenidos.

Kepler's Box #origami @origami

The big curves here, the unwrapped ellipses, recall Rebecca Gieseking's masterful twists in her diagonal shift vases. All the smaller curves are circle arcs. (Not that you have to use circle arcs -- they're just easier to draw and to keep track of.)

An origami tiger cub by me, instructions at https://woodenbooks.com/index.php#!ORI/11.

This was inspired by David Mitchell’s P-P-Pig https://www.origamiheaven.com/pdfs/pig.pdf.

#origami @origami #caturday #cat #craft #papercraft #tiger #photography

Chat créé par Roman Diaz

Étonnamment, il n'est pas plié à partir d'un carré, mais de la chute d'une feuille A4 dans laquelle on a coupé un carré.

En gros, d'un rectangle aux proportions 1:2.45. À peu près, hein.
Ici, j'ai utilisé un rectangle de kraft de 8.7×21 cm.

Le diagramme est disponible dans le 1er livre de Roman, *Origami para interpretes* : https://www.giladorigami.com/BO_Interpreters.html

Pliez-le grâce à cette vidéo :
https://www.youtube.com/watch?v=hpi4d01h1SM

#origami #cat #CatsOfMastodon #caturday @origami #chat

It just occurred to me that without access to a pencil, #origami alone is capable of multiplying numbers together quite easily.
12 x 34 = 3, 10, 8 = 408

It's pretty neat that if you make a knot in a strip of paper you get a perfect pentagon.
#origami

J'aime bien plier des modèles qui ne demandent pas des heures de concentration. Parce qu'au bout d'un moment, je risque de me lasser…

C'est ce qui m'est arrivé sur ce modèle d'une tessellation d'Eric Gjerde, *Star Puff*.

J'avais préparé une grille dense, dans l'idée d'avoir un beau résultat.

Mais j'ai calé en cours de route, vers l'automne 2020. Ça fait quatre ans et demi !

Bref, je viens de la retrouver, et promis, cette fois, je ne lâche pas avant la fin

Seeing @neauoire's paper computing explorations, I was reminded of an old idea I proposed at PaperCamp LDN back in 2009: Originally this was vaguely about using origami to create multi-purpose AR markers, but I then extended it to other use cases, some of which could be adapted and be even relevant today, e.g. as a form of proof-of-work, protection against AI crawlers or other form of access control.

Some possible approaches for different use cases:

1) Ask users to perform or series of simple folds and then check results by validating fold lines in the flat sheet paper via computer vision
2) Same as #1, but perform shape recognition/validation of fully folded result
3) Unfold a pre-shared (and pre-folded) origami object to check result by validating fold lines via computer vision
4) Provide instructions for multiple origami creations to create uniquely identifiable objects for computer vision based interactive environments

Number 1-3 are more or less about forms of proving physicality, work, membership. Number 4 is more about using origimi as fiducial markers for general interactions

More ideas/summary from that event:
https://adactio.com/journal/1546

cc/ @adactio

Some extant dinosaurs.

From left: Ruby-throated Hummingbird (Robert Lang, Rooster (Satoshi Kamiya), Songbird (Lang), Little Bird (Kamiya), Blakiston’s Fish Owl (Katsuto Kyohei), Egret (Jeong Jae Il), Bald Eagle (Quentin Trollip)

#origami
#origamibirds

Kicking frog
- Robert J. Lang

#origami_in_action #origami #frogs @origami

Und da ja bald Ostern ist, habe ich mir einen Hasen gefaltet...
Anleitung:

https://www.youtube.com/watch?v=SbwTfJsP-Io

Another Cylindrical Wedge Collapse -- this one with 45 degrees of arc and pleat width proportional to the height of the curve.

#origami @origami

Origami Pairs

Owls, Katsuta Kyohei / Kunihiko Kasahara

What the world needs is some wisdom (maybe start with stopping some of the lunacy)

#origami
#origamiart

Two simple origami cats, Book Street, Ho Chi Minh City (#Saigon), #Vietnam
#origami @origami #caturday #cat #craft #book #photography

#Origami flexigons, best fidgets.

Still playing with #origami logic gates.
https://pi.math.cornell.edu/~zakh/crease-patterns.pdf