3D Zane tare da AutoCAD - Sashe na 8

39.2 Alamar farko

Hakanan mahimmanci sune daidai da mahimmanci na daskararru waɗanda muka gani a cikin sashe na 37.2, sai dai ga bambancin da muka riga muka ambata a tsakanin waɗannan abubuwa biyu na 3D abubuwa. Wato, baƙi na asali ba su da kaya na jiki kuma sun hada da fuskoki, mahimmanci. Saboda haka, sigogin da ake buƙata don gina shi a cikin waɗannan lokuta daidai ne. Alal misali, silinda yana buƙatar cibiyar, radius darajar da tsawo, da sauransu.
Abin da ya kamata a lura a nan cewa yawan triangulations (cikin, fadi da tsawo) ne m da dabi'u da ka saka a cikin akwatin raga m cewa shi ne samuwa a cikin sashe Primitives Zabuka maganganu akwatin.

39.3 Conversion zuwa raga

Kamar yadda yake tare da daskararru da saman, za mu iya ƙirƙirar abubuwa na raga daga sauran nau'ikan abubuwa biyu na 3D. Wato muna da umarni da ke ba mu damar ɗaukar daskararru da saman mu canza su zuwa abubuwan raga. Canjin da aka ce yana nufin, yin amfani da anglicism, a cikin "faceting" (triangular) mai ƙarfi ko saman, don haka, ana aiwatar da tsarin ta hanyar tattaunawa inda muke ƙayyade nau'in triangulation don amfani, wasu sigogi masu dacewa da fuskokin da za a samar. da matakin santsi.

Sakamakon tsari shine don ƙirƙirar abu mai tsabta ko farfaɗowa daga abubuwa masu nau'in. Sakamakon juyin juya hali ya ba mu izinin siffanta irin facetting ko smoothing don amfani kuma yana bayar da maɓalli guda biyu, daya don maida sakon a cikin sassauka kuma wani don juya shi a saman.

39.4 Edition

39.4.1 Smoothing

Ƙarfafawa shine tsarin da ke gyaran ƙudirin grid na facets wanda ke kunshe fuskoki na abu na miƙa. Mun ce cewa abu mai asali yana kunshe da nau'i na fuskoki waɗanda suke kusa da gefuna da kuma shimfidawa. Hakanan, kowane fuskoki yana da wasu adadin facets. Ƙara ƙarawar yana ƙara yawan facets kowane fuska. Abubuwan da za a iya yin amfani da smoothing suna iya fitowa daga 0 zuwa 6, kodayake babban darajar smoothing zai iya rinjayar aikin da aka aiwatar da shirin.
Daga baya zamu ga cewa yana iya yiwuwa fuskar fuskoki masu laushi. A halin yanzu, a nan zamu yi amfani da kayan ƙanshi ga kayan aiki a cikin duka ta hanyar maɓalli Smoothing da kuma Ƙaddamarwa kaɗan daga cikin sashe na Mesh.