Ukuhamba ngokujulile nge-NextEngine isazi sesithwebuli uDan Gustafson
Lapho uhlela into ye-3D usebenzisa uhlelo lwe-CAD, izinhlelo ezijwayele ukujwayela ukusebenzisa imodeli zisebenzisa "i-polygon mesh" noma i- " N on- U- R u- B Bisis S pline" (NURBS) ukuchaza into.
Emgwaqweni wokudala ifayela lokuphrinta kwe-3D, izinhlelo eziningi ze-CAD zikuvumela ukuba uguqule ifayela kwifomethi ye-STL (okuyiguqula ibe yindwangu ye-polygon ye-polygon), ngakho-ke ungase uzibuze ukuthi kufanele udale into nge-mesh kusuka ukuqala noma uma kungcono ukusebenza ku-NURBS bese wenza ukuguqulwa.
Sixoxisane noDan Gustafson kusuka ku- NextEngine , inkampani ehamba phambili ye-3D scanner, ukuze sibone amaphuzu amahle kakhulu kulezi zinhlobo ezimbili ezinkulu zezinhlobo ze-3D.
Ngokuqondene ne-model modeling iyahamba, i-NURBS izokhipha izithombe ezilula kakhulu. Kuzokwenza futhi amamodeli anembile kunabo bonke ngisho namaphethelo angaxhunyiwe. Kuzobunjiniyela nezinhlelo zokusebenza, ukunikezwa kwekhompiyutha okusekelwe nge-NURBS kukhethwa kuma-polygon mesh izinhlelo ezisuselwe kuzo. Ngokuvamile, uma uskena izinto kuhlelo lwe-CAD, ziqala ukuskena usebenzisa i-NURB
Uma usebenza kuma-NURBS, uhlukanisa ijika phakathi kwamaphoyinti. Amaphuzu azokwakha umxhwele onamagxathu ngaphezu kwekhava. Ukuze ulungise ijika, kufanele ulungise amaphuzu emanzini. Lokhu kungaba nzima ukwenza kahle.
I-NURBS inemikhawulo yayo. Ngenxa yokuthi ifomu lokuhumusha eli-2-dimensional, udinga ukudala "ama-patches" owabumbene ndawonye ukuze wenze isimo esiyinkimbinkimbi esayizi-3-dimensional. Kwezinye izimo, lezi zikhonkwane azivumelani ndawonye ngokuphelele futhi "zihlanganisa" zivela. Kubalulekile ukubheka ngokucophelela into yakho uma uyiklama futhi uqinisekise ukuthi izigxobo zihambelana kahle ngaphambi kokuba uguqulwe ukuze uzibophezele ifayela le-STL.
Isigqoko se-Polygon sakhiwe ngokukhethekile ukuhlinzeka ngezinto ezintathu-ntathu kukhompyutheni. Ngenxa yalokhu, kuyifomethi esetshenziswe amafayela we-STL. Uma usebenzisa ama-triangles ukudala ama-shapes we-3D, udala ukulinganisa kwemigqa ebushelelezi. Ngeke ufeze ukushelela okuphelele kwesithombe ekuqaleni okudalwe ku-NURBS, kodwa ukubopheka kulula ukuyifanekisela. Ungakwazi ukusunduza uphinde udonsa emanzini ukuwuhambisa futhi ufeze imiphumela efanayo ngaso sonke isikhathi ngoba awubala izilinganiso zezibalo zamaphuzu.
Uma usebenza kuma-NURBS uphinde uguqule ifayela ibe yimeshini, ungakhetha isinqumo sakho. Isixazululo esiphezulu sikunikeza ama-curve esiphundu kulokhu okunyathelisa. Noma kunjalo, ukulungiswa okuphezulu kusho ukuthi uzoba nefayela elikhulu. Kwezinye izimo, ifayela lingase libe likhulu kakhulu ukuze iphrinta ye-3D ibambe.
Ngaphandle kokuthola ibhalansi ephelele phakathi kwesinqumo kanye nosayizi wefayela, ungasebenzisa ezinye izindlela zokuhlanza ukunciphisa usayizi wefayela lakho. Isibonelo, kudingeka uqiniseke ukuthi uma wenza izinto ongazange udale kuzo zonke izinto ezingenakuphrinta. Enye indlela lokhu kungenzeka uma ujoyina amafomu amabili ndawonye, ngezinye izikhathi izindawo zokujoyina zihlala zichazwe, noma ngabe, uma ziphrinta, ngeke zihlukaniswe.
Kungakhathaliseki ukuthi uqala ukwenza into yakho usebenzisa i-NURBS noma imishini izoxhomeka kokuthandayo. Uma ufuna uhlelo olulula ongasoze uludinge ukuguqula, ukuqala emgodini kuzoba yindlela engcono kakhulu. Ngakolunye uhlangothi, uma ufuna uhlelo olunikeza ama-curve aphelele, kufanele ukhethe owodwa osebenzisa i-NURBS (i-Rhino yisibonelo esisodwa esibonisa ukubuka kabanzi: Yiziphi i-NURBS?).
Ngizovala lokhu okuthunyelwe ngalokhu: Uhlelo lwe-3D Design olukhululekile kakhulu, cishe, luyoba nokukhetha ukuthekelisa ifayela lakho le-NURBS noma le-Mesh ku-STL noma enye ifomethi yokunyathelisa i-3D. Ekugcineni, sizokulalela iseluleko sikaSherri Johnson, ovela eCatzPaw, esixoxisana nabo ngamasu namasu: Ukulungisa amafayela we-3D nge Meshmixer ne-Netfabb .
"Ifayela le-STL idinga ukuvulwa ohlelweni lombuso olukwazi ukuhlola izinkinga nokulungisa lezo zinkinga, ngokuzenzakalelayo noma ngesandla. Ezinye izinhlelo zokuxuba (njenge-Simplify3D) zinikeza ngamathuluzi wokulungisa njengamanye amahlelo we-CAD (izandiso zeSketchUp). Izinhlelo ezizinikezele nazo ezikhululekile, futhi ezifaka amathuluzi wokulungisa kakhulu yi-Netfabb ne-MeshMixer . "
Ezinye izinsiza ezinkulu zokuqonda amafomethi omfanekiso ahlukene zivela emahhovisi omsebenzi wokunyathelisa we-3D (lapho sikhuluma nge-Sculpteo ne-Shapeways, ukubiza nje umbhangqwana). Lawa mafemu kufanele aphathe izinhlobo zamafayili namafomethi avela kuzo zonke izinhlelo zokuklama ze-3D emhlabeni futhi ngokuvamile abe namathiphu amakhulu nokusikisela kokuthola amafayela akho ukuphrinta ngakwesokudla.
Nansi omunye kusuka ku-Sculpteo enikeza isifundo ngokusebenzisa i-Rhino 3D, ngokuqondile. Ungafunda nangokusebenzisa i-Meshmixer noma i-Autodesk Inventor noma i-Catia noma i-Blender kulesi sigaba se-Sculpteo: Izitatimende ze-3D Printing: Lungisa isibonelo sokunyathelisa kwe-3D .
Ngenxa yokuthi ama-animator amaningi namakhompiyutha ehlukumezi zekhompiyutha afika ekunyatheliseni kwe-3D ngethuba lokudala izinhlamvu, i-Shapeways inikeza eyodwa efanelana nalo mthethosivivinywa: Indlela Yokulungisa I-Render / Animation Model Yakho Yokushicilela Kwe-3D.
I-Stratasys Direct Manufacturing (eyayivela i-RedEye) inomsebenzi omuhle ku-Indlela Yokulungisa Ifayela le-STL esabelana ngayo ngasekupheleni kokubukwa kwamafayela wethu we- STL .