Daim Duab 3D nrog AutoCAD - Tshooj 8

39.2 Mesh primitives

Daim phiaj cov ntxaij muaj qhov zoo sib xws rau ntawm cov khib nyiab uas peb pom hauv ntu 37.2, tshwj tsis yog rau qhov sib txawv peb tau hais txog ntawm ob hom 3D khoom no. Ntawd yog, cov mesh primitives tsis muaj lub cev tsis zoo thiab yog tsim ntawm ib pawg ntawm lub ntsej muag, hauv paus. Yog li ntawd, cov tsis xav tau rau nws txoj kev tsim kho yog nyob rau hauv ob qho tib si qub. Piv txwv li, ib lub tog raj kheej yuav tsum muaj lub chaw nruab nrab, cov nqi hluav taws xob thiab qhov siab, thiab lwm yam.
Dab tsi tsim nyog tseem ceeb ntawm no yog tias tus naj npawb ntawm cov voos (ntev, dav thiab qhov siab) yog txiav txim siab los ntawm cov nuj nqis uas peb qhia meej rau hauv Mesh Primitive Options dialog uas muaj nyob hauv ntu Primitives.

39.3 Hloov tshiab rau Mesh

Ib yam li cov khib nyiab thiab qhov chaw, peb tuaj yeem tsim cov khoom mesh los ntawm ob hom 3D khoom. Qhov ntawd yog, peb muaj cov lus txib uas tso cai rau peb nqa cov khib nyiab thiab qhov chaw thiab hloov lawv mus rau hauv cov khoom mesh. Hais tias transformation implies, siv ib tug anglicism, nyob rau hauv "faceting" (triangulating) cov khoom los yog nto, yog li ntawd, cov txheej txheem yog nqa tawm los ntawm ib tug dialog qhov twg peb txiav txim seb hom triangulation yuav siv tau, ib co tsis muaj feem xyuam rau lub ntsej muag yuav generated. thiab qib ntawm smoothing.

Cov txheej txheem thim rov qab yog los tsim cov khoom tawv lossis saum npoo los ntawm cov khoom siv mesh. Hloov pauv Mesh ntu tsuas yog tso cai rau peb kom qhia meej txog hom fawm lossis nrawm rau siv thiab muaj ob lub khawm, ib qho los hloov lub mesh ua khoom thiab lwm qhov kom hloov nws mus rau saum npoo.

39.4 Tsab

39.4.1 Smoothing

Cov txheej txheem hloov kho daim phiaj daws teeb meem ntawm cov duab sib dhos uas ua rau lub ntsej muag ntawm lub mesh yam khoom yog hu ua smoothing. Peb tau hais tias qhov khoom siv mesh yog tsim los ntawm ib pawg ntawm lub ntsej muag ncua raws nws cov npoo thiab cov kab ntsug. Nyob rau hauv lem, txhua lub ntsej muag muaj ib tug xov tooj ntawm cov facets. Los ntawm nce qib smoothing, tus naj npawb ntawm facets ntawm txhua lub ntsej muag nce. Qhov ua tau smoothing nqis los ntawm 0 txog 6, txawm hais tias ib tug heev smoothing tus nqi yuav cuam tshuam qhov kev ua tau nrog uas cov kev pab cuam khiav.
Tom qab ntawd peb yuav pom tias nws tseem tuaj yeem ua lub ntsej muag muag ntawm tus kheej. Lub caij no, ntawm no peb thov smoothing rau lub mesh khoom raws li tag nrho dhau ntawm du ntau dua thiab du khawm tsawg dua hauv Mesh ntu.