Mune imwe nyaya yapfuura, takataurira zvinomwe zvemashoko makuru ekufananidzira kwe 3D anoshandiswa mumazuva ano emakombiyuta emagetsi. Patainyorera chiitiko ichocho, takaona kuti zvikamu zvebhokisi nekutarisana kwekukwikwidzana kwaive kuve kwenguva yakareba kudarika zvataida.
Pakupedzisira, takasarudza kuti zvingava zvakanaka kuti tibvise ruzhinji rwemashoko aya mune imwe nyaya yakasiyana. Muchikamu chino, tichatarisa pane zvimwe zvishandiso uye nzira dzinoshandiswa mu polygonal 3D modeling.
Mu polygonal modeling , muenzi anoumba chimiro che digital chinomirirwa nechinhu che 3D chinonzi mesh geometric inoumbwa nemaso, makona, uye maziso . Zviso zvinowanzoitwa quadrilateral kana katatu, uye inoita pamusoro pe 3D model. Nokushandiswa kwemashoko anotevera, mufananisi anoshandura mitemo inoshandura imwe meshiti ye 3D mesh (kazhinji kacube, cylinder, kana sphere) mumutambo wakakwana wa 3D:
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Extrusion
Extrusion ndiyo nzira yekuwedzera geometry kune pombigoni yakawanda, uye imwe yezvishandiso zvinoshandiswa nemuenzaniso inotanga kutanga kuumba mesh.
Kupfurikidza nekudzikisa mufananidzo unoshandura 3D mesh kana kukoromoka nechiso mukati mawo pachako (kugadzira indentation), kana nekudhonza chiso kunze kunze kwemazuva ose -iyo inotungamira vector inofanirana nemuviri wepoloni.
Kutambanudza chiso che quadrilateral kunoita mapurigoni mana matsva kuburitsa gaka pakati pekutanga nekuguma kwechinzvimbo. Extrusion inogona kuoma kufungidzira pasina muenzaniso wekrete:
- Chimbofunga piramidi yakajeka, yakagadzirwa ne quadrilateral (4-yakatarisana). Mutevedzeri angashandura iyi piramidhi yepakutanga kuva mufananidzo wakafanana neimba nekusarudza hwaro hwepiramidi uye kuidzingira mumatambudziko akaipa Y. Chigadziro chepiramidhi chinoshanduka pasi, uye zviso zvina zvitsva zvakasvibiswa zvakasikwa munzvimbo iyo pakati pedenga uye cap. Muenzaniso wakafanana unogona kuonekwa mukufananidza makumbo etafura kana chigaro.
- Edges inogonawo kubudiswa. Paunenge uchitambanudza rutivi, unofanirwa kudhindwa-zvinyorwa zvinyorwa zvinogona kubva zvichitsvaga kana kutenderedzwa kubva kune zvakasikwa kune imwe nzvimbo, neine mutsara wepolinoni yakangoerekana yakasangana kuwirirana. Iyi ndiyo nzira yekutanga yekuumba ma geometry muhutano hwekuenzanisa .
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Kuparadzanisa
Kugadziriswa kwepasi ndeye nzira yevanomiririra kuwedzera sarudzo yemuenzaniso, zvichienderana kana kusarudzwa. Nemhaka yokuti mhando ye polygonal inotanga kubva kubva kune imwe yakadzika yezvigadziriswa zvishoma nezviso zvishomanana, zvisingabviri kuita chimiro chakapedzwa kunze kwekuda imwe nzvimbo yezvivako.
- Kuparadzaniswa kweyunifomu kunoparadzanisa nzvimbo yose yemuenzaniso pamwe chete. Kugadziriswa kwekufananidza kazhinji kunopedzerwa pamwero wakaenzana, zvinoreva kuti zviso zvose zvepigoni zvinoparadzaniswa kuva zvina. Kuparadzana kwakasiyana-siyana kunobatsira kubvisa "blockiness," uye inogona kushandiswa kunyatsotarisa kumusoro kwemuenzaniso.
- Edge Loops - Sarudzo inogonawo kuwedzerwa nekusarudza kuwedzera kuwedzera makumbo. Anopisa makumbo anokwanisa kuwedzerwa pane chero chinogadziriswa chetachiona zviso, achiparadzanisa zviso zvakasarudzwa pasina kuwedzera kusinganzwisisi kugadzirisa kune imwe yese mesh. Edge loops inowanzoshandiswa kuwedzera kusarudzwa munzvimbo dzemuenzaniso unoda huwandu hwemashoko hunosiyana nejometri yepamunharaunda (mabvi uye zvigunwe zvoukomba zvemufananidzo muenzaniso wakanaka, semiromo nemeso).
Edge loops inogona kushandiswawo kugadzirira nzvimbo yebudisi kana kuparadzaniswa kweyunifomu. Kana bhudziro risina kugoverwa, mitsara ipi yakaoma yakakomberedzwa uye yakarongedzwa-kana kukatsanurwa kuchidikanwa asi mufananidzi angada kuchengetedza mamwe magetsi akaoma, anogona kuchengetedzwa nekuisa rutivi rwakadzika kumativi ose emucheto uri mubvunzo. Izvi zvinogona kuwanikwa kuburikidza nokushandiswa kwechirongwa, chakakurukurwa pasi apa.
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Mabheji kana Chamfers
Kana wakambove wakakomberedza unyanzvi, huwandu hwemaindasitiri, kana huni hunogadzira mashizha zvachose, shoko rokuti bevel rinogona kutotora uremu hwako.
Nokusingaperi, mhedzisiro ye 3D model inopinza zvakasimba-mamiriro ezvinhu zvokuti haambofi akamboitika munyika chaiye. Tarisa-tarisa iwe. Kuongororwa zvakakwana zvakakwana, inenge mhirizhonga yose yaunosangana nayo ichava nemhando ye taper kana kuti yakaipoteredza.
Chirwere chinoshandiswa ichi chiitiko chinosanganisa, uye chinoshandiswa kuderedza utsinye hwemakona pane 3D model:
- Semuenzaniso, rimwe nerimwe pamucheto wecube rinowanikwa pa 90 degree convergence pakati maviri ma polygonal zviso. Kuchengetedza mitsetse iyo inobatanidza chiso chakasvibiswa che 45 degree pakati pemakwikwi anotendeuka kunoderedza kuonekwa kwemucheto uye kunobatsira cube kubatana nekujekesa zvakanyanya. Kureba (kana kukanganisa ) kwebheji, pamwe nekukwirira kwayo kunogona kutsanangurwa nemuenzaniso.
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Kuchenesa / Kugadzira
Zvakare zvinonzi "kusunungura nekukwevera maziso," mienzaniso yakawanda inoda humwe huwandu hwokugadziridzwa kwebhuku. Pakuchenesa mufananidzo, muenzi wacho anongedza mavara ari oga pamwe chete ne x, y, kana z axis kuti aite zvakanaka zvese zviri pamusoro.
Kuenzanisa kwakakwana kwekunatsiridzwa kunogona kuonekwa mubasa remuvezi wezvigadzirwa zvekare: Kana muvezi anoshanda, anotanga kuvhara maitiro makuru emifananidzo, achitarisa kumira kwechikamu chake. Zvadaro anodzokorora nzvimbo imwe neimwe yezvifananidzo ne "rake brush" kuti iite zvakanaka uye inodonhedzera zvinhu zvakakodzera.
Kuchenesa 3D model kwakafanana chaizvo. Zvose zvinoputika, bhero, kumativi-e-loop, kana kupatsanura, zvinowanzoendeswa nechetest of vertex-by-vertex kugadziridzwa.
Nzvimbo yekugadzirisa inogona kuva inotyisa uye zvichida inodya 90 muzana yenguva yakazara mufanisi anoshandisa pachidimbu. Zvinogona kungotora maminitsi makumi matatu chete kuti uise rutivi rwemucheto, kana kuti kubudisa kunze, asi hazvinganzwisisiki kuti mufananidzi apedze maawa achichenesa nzvimbo yepamusoro yepodhori yepamusoro (kunyanya mukuenzanisira kwekugadzirwa kwezvinhu, uko kushanduka kwepasi kwakanaka uye kwakajeka ).
Kujekesa ndekupedzisira danho rinotora muenzaniso kubva kune basa rinoenderera mberi kune imwe yenyika yakagadzirwa.