Converting OBJ Files to glTF and GLB Files

Overview These are notes on how to convert OBJ files to glTF and GLB files. Target Data The target is the “Ishibuchi Family Globe” from the “Kikuchi City / Digital Archive.” https://adeac.jp/kikuchi-city/catalog/e0001 The OBJ file can be accessed from the following URL. https://adeac.jp/viewitem/kikuchi-city/viewer/3d/dc-e0097/models/Kikuchi_Globe_180820.obj Downloading the Target Data Download the library. n p m i a x i o s Prepare the following file. c c c a } a } c c i } p o o o s s o o f r n n n y y n n o s s s F n L n U s s ( c t t t u c c c } r r } o c t } } s t t ! f e n o o ) e e ) a r a f s s a f p c f n n ; s t ; d f y c g o o s . s x s a t u s s p u u a e b u . m O i t i n t t u m r o r w w n { c c c c f c c i } } t c j t e k b o = h o c r e e n n r r o c o o o o s o o f c o e U p x d j s n t w r l t s s i i b t n n n n . n n e h n x r u i i F r = i r e , h p e n t t j i D s s S s s w s S s ( l s a l t s r i = e t o i s o o . e e e o o t t a t t r o e t m c c c a c c c f } s c ( o m D t S l q r o n t p d n d w r r f n w v i l a t o o o w o o o o e o e l p = i s y e r u e e o : s a . . i n o o e o o t e r m l n n n a n n n r n r e l r S n ( e i q d d r n e t P o o l p l b b b b e . c t M s s s D i s G s s { s r . e ' y c o q r u o o s ' T a r n n e r o j j j j F l h l a t t t o t o e t t ( c c c a c o o e h = n ( b u e i w w = e G y . o ( ( o a R C o F F i o M t w l t c o o o w o l r r t c o j i ( r n n E p p m ' ' a c d e o b i i l g f a c m m m n d e m t o n n n a n e ) r t ( u U r ' e l l f = T e i i f e n e s n j l l e ( o t h t t t l o . . t e n s s s D i s . o p o t r e f ( o o s ' : p s i r d s p t e e S ` r c ) l l l o w l m l x s t t t o t o l { r s / u p l ( s ' a a . a , e e n r s o o e f N P y D h F U F a n o t C t t w l o ( : d t u , ' ' p d d c w ' ( ( i o d O b n n i a a n o . { i r i d l g l o u t t t n d e g ` / p t a ) a F r a s w ( s r o b j s t l m t c w m = l l l o ( n r m e e e l o . ( E w u D o x ; t a i e i t r r h ' w j e e e h ( n t e e . a ` f t e a x x x o w l ' r a n t i u i h l a t r i e ' , n F f = o l l o N = P m d D i e M t t t t a n o N r d l D r t o ' f e t e t s , l i i = = = b o b a a t F o l n a c u u u d l g o o e o i , p s ) i ( e a a e o r o l l o j a f j m n t l i w e t t h r r r o ( r a a r u ' ; l u W x m r l r e a e e a b p p F d i C e e h l n c e e e t a ` M c d ) { t ) e r r i ' ) v e j d ( w j a a i e l o w f e l c = h o F U F e d D T p . s ) D ; l i o , ; e s e o a a R t t l d e n = = i ( o o e f i r i x F o L r j ' r i f , t s , o c r b n i e h h e t U l m a n f s l l l t i w o p ; { e r r e ( l t e j d t s . . P O p e m R p e t d t s t e e u l n f c / c ) o o S { r v ) l U p b j a B a n t L a l e e . = e N = P r e l i e v u ; m u t e e ; a r g a o a o t J t t l ( t U d n r x a a e ( o l s i r t r j ) t l e x n s i h h . M m h r t e [ t m n t t a e s e s a p e e ; e , t i s e n , f m a t . l M a . u e e h i e d i w i u a c d o e n ( i a t l j , T a d . r w m x e r n i v s t m t o i s . a o o l t c F o L n F . e = = a t d e g t e p P ( ) f u t . d m u b e c h i i m d i m M U g u f e : e a o i t s g a e t j : h [ l n t f l t a m R p e r t e O m c t u = l p e t ( p C ( 1 e ( l i f e l t a L a e e r B / t i h t > e u c t a o u o $ / ] N o F l i S C c t ( t U x e J k r f ) p s t o ( ; b t n { ^ ; a u i e n y o h c t h r t n i u i u { D n o j D t o m m t l : d n n e h e . l u c f k e e { t i t b U i e b t e p e c t s [ x j , r e i u d P r e j r r n j l , u P $ r ( e ) 1 t o e d l c } a ) n U l , t F l t a { e m n ] u i t e h ) U t t r ) ) i i o D t m l t t { ; r n e f i : i ; R h { l ; o ; l b b i h t a l . e ( x i n - L ) ) b e \ j r ) l t F m F o t l $ c ; ; j P s U , ; F e i a i u u e t { i F a + r i d l t l t r : h e t i t ( l m l e c e p e e r y l h . ) t e f P h N u F $ r / e } + . l P i a A a t i { O o v N ` ) h F a l t l m D l t B r i a ) $ r i t e h l e i e e J . e m ; / e l h s , ( , r P x m w e m f e } , a t f e e ) ) ; N ` ' ^ o t u i s r ; ; a ) u m b p h r l s / m ; t a j a ) e e a 3 e f p U t ; F . g d ) - _ r h i ' e / ; 8 K l . l ) } d ' d ) b e ; ` c ) . a P ) - ; s h s a ; e + r e t 0 ( e n h 0 . f a } 9 + ; m ` 7 ) e ) / $ ( ; m / t o g e d m x e ) t l ] u s ; r / e K F i i k l u e c N h a i m _ e G ) l ) o ; b e _ 1 8 0 8 2 0 . o b j ' ; Execute it. n o d e d w n . j s The .obj, .mtl, and .jpg files are downloaded to the downloads folder. Converting to glTF Download the library. n p m i o b j 2 g l t f Prepare the following file. c c o } o o b ) n n j ; s s 2 t t g c f l o s o f t n . b s f s w j ( t r 2 = " i g . d t l r / a e t e d t F f q o a i u w l = i n = e r l S r e o B y e ( a u n q " d f c u f s f ( i s / e " r " K r . e ) i . / ( ; k f m " u r o o c o d b h m e j i ( l 2 _ J . g G S g l l O l t o N t f b . f " e s " ) _ t , ; 1 r 8 i d 0 n a 8 g t 2 i a 0 f ) . y ; o ( b g j l " t ) f . ) t ) h ; e n ( f u n c t i o n ( g l t f ) { Execute it. n o d e c o n v e r t . j s A model.gltf file is created. Converting to GLB Download the library. n p m i g l t f - p i p e l i n e Convert the glTF file to a GLB file. g l t f - p i p e l i n e - i m o d e l . g l t f m o d e l . g l b Summary There may be other appropriate conversion methods, but I hope this serves as a helpful reference.

Overview#

Target Data#

Downloading the Target Data#

Converting to glTF#

Converting to GLB#

Summary#

Overview

Target Data

Downloading the Target Data

Converting to glTF

Converting to GLB

Summary