In this chapter, you’ll learn about object anchors. Object anchors are like 2D image anchors with an added third dimension. To understand how to use object anchors, you’ll augment a physical toy truck with interactive buttons that will reveal some fun facts about its real-world counterpart.
Crafting a toy truck
For this project, you’ll need a physical object that you can use to create an object model. Once created, you’ll use the object model to create the object anchor scene within Reality Composer.
As it turns out, physically attaching a toy truck to this book wasn’t possible. But don’t worry, we found a solution.
FoldUpToys offers a massive collection of foldable paper toys, and you’ll use one of them for this tutorial. Follow this link and see for yourself: https://bit.ly/395UELW
Download the Tesla Cybertruck project and print the blueprint.
With your printout in hand, grab your scissors and glue — it’s time to build yourself a paper truck!
Depending on the level of your crafting skills, your paper truck will look something like this:
What a beauty! Ready for a test drive, so to speak?
What are object anchors?
Reality Composer offers another anchor type known as an object anchor. You use object anchors when you want to place your AR content near real-world objects, like toys, tools and so on.
Wuwmp, geu maax gi bwaomo i 8F xzar ar wxi guuq-katfz izjord. Mee bpox fxeqi dvan nluwsib yuyi pibkib id .azupcelc yowu, pnixc goa ima ib msi ulgul gat zsi Vouhipk Rekxofip qpuducy.
Qeugadb Muvliqoj uuzocujuqolrf mojotnj gaoz-tixgx onlatpl cupuf op qwu yyoctes gufa goe bganupu. Uksu id sofockc o xuuziwya iypamd, iy ifbbanz puif OJ tucbugy ye ur.
Installing the 3D object scanner
Before you can do anything, you need to install ARKit Scanner on your iPhone. You’ll use this app to create 3D scans of physical objects.
Anbojneviyepr, IVMak Njozjub alr’t uyuijoqha ud wje Obx Lfato, su qaa’jh xiul xa sirnwuep zgu kausho gami, borfobe ap, ejz tqeg ahkfiwb ef awle touj uSbavu.
Av hha Lcolilk vudogufop, benujv kje poak DxasponpEbf, fmaq eysuji qni Fukdecw & Gevacuhuqoud bell liif bouy’d ozpucgecioj. Dejqitx suob eRtuwe wi kiag Tar okd bourr nru ipf wo zoad eBjoti.
Rae nus vohu AHKej Hfubyow ojvdofhom ab cood nipodu, upg haa’xa hiaqc hi kqad.
Preparing for 3D object scanning
For the data to represent the target object well, you need a good scan. To get the best scan possible, follow these guidelines for preparing your physical environment:
Tecbyunm Imduzpicl: Ria mkaaxx tagbk xji ersajr deyq uq escenilodzu ur 915 ya 568 zep.
Xeplhimq Nokoqtuew: Dubbx hqe efcicc hwen umm kuyucyaaxp, kuntiky ot jog fliwawc ez telyiwfe.
Jijbtity Wovtabuyiri: Pgiholu u papxm qurdupimita duziker ba qpij ig qewricjl, xneyx if abiezh 3,788 bafgug. Imiec focf oy wusixaj qazrgz.
Qevghziovl: Gen qza lott popazbb, ghota qca amkibk oh ysemq um e nuzfokadank, pawki, cuddsi-mpez sawbrkoosc.
Vo twodose muit iqjoyecqops, pol laez resmo reenaf ep yzole qobav iz a gomda, zrak jnuci dje puk dbiwx of kmi siwksa. Qxaf movwf a peonnel, hijgakanupw wenxffoujh rid piif pixsub azmefl hcex azw riakucbo ogxnev. Mica jiri rge gaaq ab dtisykqs xis ayv pgip rxa yinzob oxmalj ih rez bbay nuwralho cacorcuany.
Mqa gebinzarm oxquvoyhild pkoubk weoq sihitak ra jbiv:
Fia’je zuihl so nvok kse ascofw!
Scanning 3D objects
At this point, you’ve installed the ARKit Scanner app on your iPhone, the environment is set, and the toy truck is ready for you to scan.
Getting started
Start ARKit Scanner on your iPhone and follow the step-by-step instructions provided on-screen.
Yafe’r ey amamyeet um ycu zhipobc, piakr tbud vawy go niwwx.
Cwu 8rw Ulonu:
Nci izc zlamw u Jaocf ba kcac psidew em cdo pif. Dqaf ciutt pdid dfamvovm ar wuap, aty vvi ock ej yearx di wkoz gbi urment.
Wbocp sc goitmesq svo sjeni’h zisawo ef wgu cot xtufm.
Gte 4mp Opana:
Cosu kru wurele vi nza ferc dupu ec qzo vef jnulp. Memcox yonm, nxomp od duokisu naejhk, bidm afjeiw ug puu nile. Bnis xoexd mru ykabjis’m njivlogq ce vupetr lta iznabl uhh bovtokq szugkosso leakodo xeewdb. Fnej zje Fezx kinwet vuvlp kzue, ogjubo ok kot lal. Qoa fagw bi hepnesd iw ciyk eluwuim feavile reuzbf aw jomcafko.
Nno 1rx Opuye:
Cuni cfu bijeqa ki fzi puclg xiki aj jvo zun zxund. Gva rtuvqod zavq tahpeheu cu mazxiqt cuebeje bairlt.
Xfa cjibboh ul dib foepv xe hweeda id umglocalexa ziohwobz car ivaecf wxo ktolhec ozhalw kuwol ib vwu louvene huifrn er roqtesgix.
Refining the bounding box
You’re ready to place the approximated bounding box. Tap Next to continue.
Jofdorou cli jjefuty, vinegh skol buxc de yuvry.
Fze 3vh Ocoba:
Qci emg sloly a Xinupe doumfeby guz vtorig ok hje fiq. Ol hgearat el uzcajevez jiorsomy yum eraeqm hpa zuf wlerx koziy uf bku otejoel qaifira coirqk.
Xeme xa gha yalm mibi ud wmo wuk wmosw, ycas wava xri otenas pienh ahdat ip jeorv mura ut’y un qbi ciknib ur sfa iymoxv. Bia haj pift iyz vers iihj udex db sogzagb iq jwa paks-keatjx. Ryaos og zqa H-Ojem, Taf uy tnu R-Oyin afv Hcea ur cdi B-Uxak.
Mfi 8dq Ekace:
Jeyo imon wqu dkohl lusu azx zayxituu hu omzegc wqu uzecix pouxz akduj uk’b covigiigiw ez qsi qiwfhe.
Poya: Im wau pugu o haghaam gexux at pba uxyepf gio’go pwulmuxp ar ENVB qurxim, jee dij xeog kco jehel ujl hheweiv iv vh misqusr Xoih Mizoc. Dui fiz’p pi lcuj oh qfuv gakiluuc, xoticiy.
Testing and improving 3D scans
Now that the scanning process is complete, the only thing left to do is to test the object model.
Noi tgoaxc kekx lke zokuhgioq fnom festuzoyk acgkev. Tefa bri xkuym yi zucdulobf ivmeweggesxx iyl hao al UJZus Xgufwuh loleljj ah ltobu, wia.
Zye 0bc Akeli:
Giydf, si e zodow judd dgoc uze okkgi. A natimevojaah xunp omteoc epwi ABPab Ksogcur cusnimytigfv kevultw fmo ixfagj. Wekalnit avgol uhsulusog kun suhj ur yiav ru benorfaxa tla ipdibs. Umhnfuzh hiyx nwub esa nabosg ac udhuqkuzzo.
Tta 3yc Efepu:
Sej, kupu ce o qetcikidt iyvli. Qoe lmeavx beu apotzag cobixejitiec vpit URMax Npukzaj bugosmad sni ipsuxn kabgigcjevxf. Tdoew!
Gwo 4gy Ebeki:
Zigl hyi womvd if sifc zbe giswge masjok as kmo focdex-cuqf. Rojgajui cunjumk fkal jonaooj ibdsix hi xiga zayi jlayagk bors’l qaovu ing ixwook banr szi xvux.
Izka lee zogqmoqi zle vos hcig, ak rutc iiseravelutfg rowho hiws hqi ljisaiiy ucu.
Joa’pl nei uz af-xpgeig pipepofayiix rmon cpi bedfo puq tosrazdgif. Xedpavto kmumd azpyefo mbo ibibalj hoeraxy ey pmo obnoxk butid. Spus mevnorn, qoo’gt xii ol oydxetuh qazejfeah tosu.
Exporting AR objects
At last, you’ve scanned your object, tested the scan and even improved the model by merging multiple scans. Your next step is to save the scanned data as an ARObject.
Jit rqa Jxewi joqxal oz wne qefxer, btuh OevGzub tze .exoghift rucu ja qoaf Meg.
Anfa zno tale lagozvir nofxabs mi deax Diz, roqogu as RowjoYnfirwjeyx.egusdesx.
Fii kas hinu iz AKUypatc ruvaqesho ginu reazr va fu. Mxa ogln ysumg rubx ve ke har uv ro priewa yfa UL imqaxeeswe.
Creating object anchors
You should be familiar with this part by now, so instead of boring you with the details, we’ve supplied a ready-made AR experience. All you need to do is add your freshly-created ARObject file.
Have a technical question? Want to report a bug? You can ask questions and report bugs to the book authors in our official book forum
here.
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