Ukuqhawula umzekelo kunye nokudala i-UV Layout
Yintoni i-Surfacing?
Ngokungagqibekanga, imodeli esandul 'i- 3D esandula kutshatyalaliswa kakhulu ifana ne-packages ye-software-ininzi yeprogramme iya kuyibonisa njengomthunzi ongezantsi, ongathathi hlangothi wegrey. Akukho mfanekiso, akukho mbala, akukho mveliso. Ngumdala nje, ugosa.
Ngokucacileyo, oku akusiyo indlela umzekelo ekugqibeleni uvela ngayo ekugqibeleni kokugqibela, ngoko kwenzeka njani ukuba umzekelo uvela emthunzini ongathandekiyo wegrey kubalinganiswa ngokucacileyo kunye neendawo esizibonayo kumabhayisikobho nakwiimidlalo?
Ukuqhekeka , okubandakanya izakhiwo ze-UV , imephu yokupakisha , kunye nokwakhiwa kwe-shader , yinkqubo ebanzi yokongeza iinkcukacha kummandla we-3D into.
Umsebenzi we-texting okanye u-shader uchwepheshe unokuba ngathi uhle kakhulu kunokuba umzekelo we-modeler okanye i-animator, kodwa asebenza ngokufanayo kwinkqubo yokuzisa ifilimu ye-3D okanye umdlalo.
Zama ukucinga uRango ngaphandle kwesikhumba sakhe esinebalabala. Okanye u-Wall-E ngaphandle komsebenzi wakhe wepeyinti. Ngaphandle kweqela elifanelekileyo labathengi bezandla kunye nabalobi be-shader nayiphi na imveliso yeCG ekugqibeleni iya kubonakala igqamile kwaye ingavumi.
Ukwabelana kunye nokuthunyelwa kweencwadi kungabini ngamacala amabini enye, kodwa kusekho iinkqubo ezahlukeneyo, ngamnye ufanelwe ingxoxo yakhe. Kule ngxenye yokuqala, siza kuxubusha izakhiwo ze-UV, kunye nayo yonke into ehamba kunye nokuyidala. Kwingxenye-sibini siya kubuya neenkcazo zokumisa imephu, kwaye ke siza kujikeleza uluhlu ngokujonga ngokukhawuleza kumanethiwekhi amaninzi.
Ukuqhawula umzekelo kunye nokudala i-UV Layout
Ukubhala imephu, eyenziwe ngu- Ed Catmull ngowe-1974, yenye yezinto ezibonakalayo ezintle kwimbali yekhompyutheni yekhompyutheni. Ukubeka izinto ngokwemimiselo ngokubanzi, imephu yokumisa yinkqubo yokongeza umbala (okanye olunye ulwazi) kumzekelo we-3D ngokuphonononga umfanekiso wesibini kwi-surface.
Nangona kunjalo, ukuze kusetyenziswe imephu yokucoca kumgangatho wesimodeli, okokuqala kufuneka ikhutshwe kwaye inikezwe udidi lwe-UV olusebenzayo lwabaculi bokubhala.
- Uluhlu lwe-UV lubonakaliso olubonakalayo lwe-3D model efakwe kwidiza ezimbini. Inqaku ngalinye kwi-air-dimensional flight libizwa ngokuba ngu- UV kwaye limele i-vertex kwi-3D into. Ngaloo ndlela, zonke iindawo ezingaphakathi komda we-UV layout zihambelana nendawo ethile kumzekelo. Indlela elula yokujonga ngeso lwakhiwo uhlobo lwe-UV lubonakala ngathi:
- Ngaba wakha wenza ikhebhu ephuma ephepheni? Ukuba kunjalo, cinga ngomfanekiso owawufuna ukuwunqumla kwiphepha ukwenzela ukuba ulifake kakuhle kwi-cube-mhlawumbi ibonakala njengomnqamlezo, iiyunithi ezine (ubuso) eziphakamileyo kunye nantathu. Ukuba loo cube yephepha yayiyimodeli ye-3D, yonke i-fold yayiyi- edge , nganye ikhonkco yayiza kuba yi- vertex , kwaye yonke indawo yecala yayiba ubuso . Ukukrazula imodeli kufana kakhulu, ngaphandle kokuba kukho ubuninzi obungaphezulu kwesithandathu ubuso obunamathele.
- Ukuqhawulwa: Ukungagqithwanga yinkqubo yokunika ubuso ngamnye kwi-polygonal isethi se-UV izikhokelo kwi-plane umfanekiso wesibini. Izilungelelaniso ze-UV zigqityiwe ziboniswe kwaye zithunyelwa njengezithuthi zesikwere se-bitmap kunye nesisombululo naphi na kwi-512 x 512 yonke indlela ukuya kuma-pixels angama-6000 ngo-6000. Umculi odweba okanye odala imephu yamaphepha kwimodeli ekugqibeleni uya kusebenzisa indlela yokukhokela xa udala iifayile zokufakela.
- Ukudala Uluhlu lwe- UV olusebenzayo: Inkqubo yokubeka izikhokelo ze-UV imodeli ixhomekeke kathathu:
- Umculi uza kuqala ukhethe iqela lobuso kwimodeli, kwaye asebenzise ukubonakaliswa ngokuzenzekelayo kwabo bajongene nokubonelela isiseko sokusebenza. Isiqhelo sisoloko sicwangcise okanye sijikeleze ngokuxhomekeke kumfanekiso wento:
- Ukucwangciswa kwe-Planar: Ubunzulu bomhlaba obunjengodonga okanye umgangatho oza kuthatha isicwangciso sokucwangcisa, esichaza nje ukuba indawo ye-3D ithathelwe isicwangciso esisodwa (ngokuqhelekileyo ukusuka kwikhamera). Elinye i-caveat kunye nezicwangciso zeplanethi kukuba iqhubela yonke indlela ngokusebenzisa umzekelo-ngoko ukuba ufake isicelo sokucwangcisa kwiplube, ininzi i-UV iya kugqiba phezulu.
- Ukubonakaliswa kwe-cylindric kukulungelelene nakwindawo ephothiweyo, kwaye isebenza ngokufana nokuba uthathe ityhubhu, wenza isinqununu ukususela ekupheleni ukuya ekupheleni, kwaye wayiqhawula kude kube yinto epholileyo. Kukho nezinye iifom zokuhlola, kodwa ezo zibini zixubusha zizona ziqhelekileyo.
- Ngenxa yokuba amaninzi amanqabileyo awayiyo iplani okanye i-cylindrical, amashishini okupaka ngokuzenzekelayo akwanelanga anike umphumo owanelisayo. Ukulwa naloo nto, umculi uza kufakela ngokucacileyo ukulungiswa kwe-UV ngokuhamba ngeenxa zonke ze-UV ngendlela indlela umzekelo oyimodeli eyayiza kushukumisa kwaye izitye. Uludwe olulungileyo lwe-UV lujolise ekunciphiseni iisamu, kwaye unikezele isahlulo esiphakamileyo sesisombululo sokwakheka kwempahla kwiindawo eziphambili zeengcambu, njengobuso bomlingani, okanye inxalenye engcolileyo yengubo / iinqwelo zaso.
- Le nkqubo iphindaphindiwe kuzo zonke iipolgoni kumzekelo. Umculi uya kuhamba ngokucwangcisa, okanye adibanise amaqela e-UV ukuba aphelise ama-seams aze enze ukulungelelaniswa kakuhle kwe-UV.
Kwaye kunjalo! Emva kokuba imodeli ingagqitywanga, inkqubo iya kufakwa kwezandla zabadwebi bezithombe eziza kuphuhlisa imephu yemifanekiso ephezulu kwi-Uludwe olugqityiweyo lwe-UV.