Thaum tsim cov khoom siv 3D siv CAD program, cov qauv tsim qauv nrov siv cov polygon mesh lossis Non-Uniform Rational Basis Spline (NURBS) los piav txog cov khoom. Thaum tsim cov ntaub ntawv rau 3D luam ntawv, feem ntau CAD cov kev pab cuam hloov cov ntaub ntawv rau STL hom (uas hloov nws mus rau ib daim duab peb sab polygon mesh). Yog tias koj xav paub yog tias koj yuav tsum tsim cov khoom nrog mesh lossis ua haujlwm hauv NURBS thiab tom qab ntawd ua qhov hloov dua siab tshiab, peb muab ob qho tib si los pab koj txiav txim siab.
Kev Tshawb Nrhiav Txhua Yam
- cov ntaub ntawv me dua.
- Yooj yim hloov cov qauv.
- Compatible nrog STL hom; tsis tas yuav hloov.
- Ful 3D rendering, yog li tsis muaj seams los ntawm patching pieces ua ke.
- Ntau qhov tseeb, tsawg dua pixelated qauv.
- Zoo rau engineering thiab kev siv tshuab.
- Renders smooth shapes.
Polygon mesh renders 3-dimensional khoom ntawm lub computer. Vim li no, nws yog hom ntawv siv STL cov ntaub ntawv rau 3D luam ntawv. Thaum siv daim duab peb sab los tsim 3D duab, koj tsim cov kwv yees ntawm cov npoo du. Koj yuav tsis ua tiav qhov zoo tshaj plaws smoothness ntawm daim duab pib tsim hauv NURBS, tab sis cov mesh yooj yim dua rau tus qauv. Koj tuaj yeem thawb thiab rub ntawm lub mesh kom txav nws thiab ua tiav cov txiaj ntsig zoo ib yam txhua lub sijhawm vim nws tsis suav cov lej nruab nrab ntawm cov ntsiab lus.
Raws li kev ua qauv hauv computer mus, NURBS tsim cov duab smoothest. Nws kuj tsim cov qauv raug nrog cov npoo uas tsis muaj pixilated. Rau engineering thiab mechanical applications, NURBS-based computer rendering yog nyiam rau polygon mesh-based programs. Feem ntau, thaum koj luam theej duab rau hauv qhov kev pab cuam CAD, cov khoom no tau pib siv NURBS.
Compatible Programs: Dawb thiab hwm Versions
- Free and commercial software.
- Free and commercial software.
- Feem ntau cov kev pab cuam tuav ob qho tib si polygon thiab NURBS.
Ob lub polygon mesh thiab NURBS cov neeg siv muaj ntau yam kev pabcuam pub dawb, freemium, thiab kev lag luam software siv. Thiab ntau cov kev pab cuam muaj ob qho kev xaiv built-in. Hauv cov software dawb Blender, ua yeeb yaj kiab, piv txwv li, koj tuaj yeem ua cov cim nrog cov duab sib txawv tab sis siv NURBS rau ib puag ncig kom tau txais qhov zoo nkauj zoo nkauj nrog cov organic nkhaus.
Lwm cov haujlwm loj NURBS suav nrog Autodesk Maya, Rhinoceros, thiab AutoCAD. Tseem, cov no kuj suav nrog polygon mesh. SketchUp yooj yim, dawb version tsuas yog txhawb nqa polygons hauv nws cov cuab yeej built-in. Cov ntawv Pro txhawb nqa txuas ntxiv uas kwv yees NURBS cov txheej txheem zoo li cov nkhaus nkhaus.
Txawm koj xaiv lub cuab yeej twg, koj tsis tas yuav siv nyiaj ntau pua los ua qauv. Txawm li cas los xij, qee qhov software muaj zog dua tuaj ntawm tus nqi ntawd.
Yooj Yim Ntawm Kev Siv: Mesh Qauv thiab Luam Ntawv nrawm dua
- Siv cov kab thiab cov duab hauv peb qhov ntev kom sib sau ua qauv sai.
- Nyob rau ua kom du nkhaus.
- Sib sau ua qauv siv thaj ua rau thaj ntawm ob sab khoom.
- Gaps tuaj yeem tshwm sim los ntawm kev koom tsis zoo.
- Yooj yim ua kom du nto.
NURBS yog qhov zoo dua ntawm kev ua kom nkhaus qhov chaw, txawm hais tias kwv yees tuaj yeem ua rau hauv cov qauv mesh los ntawm kev nce tus naj npawb ntawm sab hauv polygons.
NURBS muaj nws cov kev txwv. Vim tias nws yog 2-seem rendering daim ntawv, koj yuav tsum tau tsim thaj ua rau thaj uas koj ua ke los ua ib tug complex 3-dimensional duab. Qee zaum, cov thaj ua rau thaj no tsis haum ua ke zoo kawg nkaus thiab cov seams tshwm. Nws yog ib qho tseem ceeb kom ua tib zoo saib ntawm ib qho khoom thaum tsim nws thiab xyuas kom cov seams ua tib zoo ua ntej koj hloov nws mus rau mesh rau cov ntaub ntawv STL.
Rau cov neeg pib tshiab, cov kev pabcuam mesh polygon yog qhov pib zoo los kawm cov hauv paus ntawm 3D qauv. Nws tsis siv sij hawm ntev kom tau txais tus qauv yooj yim.
3D Printing: Polygon Mesh yog nrawm dua
- Hloov ncaj qha rau STL.
- Yuav tsum hloov mus rau mesh ua ntej xa tawm ua cov ntaub ntawv STL.
Yog tias koj ua qauv rau lub hom phiaj ntawm 3D luam ntawv, polygon mesh muaj qhov zoo dua NURBS. Ib cov ntaub ntawv NURBS tsis tuaj yeem hloov pauv ncaj qha rau hauv STL hom ntawv (cov ntaub ntawv hom slicing software siv los tsim cov lus qhia rau lub tshuab luam ntawv). Muaj ib kauj ruam ntxiv ntawm kev hloov nws mus rau lub mesh ua ntej.
Thaum koj ua haujlwm hauv NURBS thiab hloov cov ntaub ntawv rau hauv mesh, koj tuaj yeem xaiv qhov kev daws teeb meem. Kev daws teeb meem siab muab cov nkhaus smoothest hauv cov khoom uas luam tawm. Txawm li cas los xij, kev daws teeb meem siab txhais tau tias koj yuav muaj cov ntaub ntawv loj. Qee zaum, cov ntaub ntawv yuav loj dhau rau lub tshuab luam ntawv 3D los daws.
Aside los ntawm kev nrhiav qhov zoo tshaj plaws sib npaug ntawm kev daws teeb meem thiab cov ntaub ntawv loj, muaj lwm txoj kev ntxuav kom txo cov ntaub ntawv loj. Piv txwv li, thaum koj tsim ib yam khoom, tsis txhob tsim cov khoom sab hauv uas yuav tsis luam tawm. Ib txoj hauv kev no tuaj yeem tshwm sim yog tias ob daim duab sib koom ua ke. Qee lub sij hawm qhov sib koom ua ke tseem txhais tau, txawm hais tias, thaum cov chaw luam tawm, lawv yuav tsis yog qhov sib cais.
Kev Tshawb Nrhiav Txhua Yam
Qhov kev tsim 3D uas koj nyiam tshaj plaws yuav muaj kev xaiv xa tawm NURBS lossis mesh cov ntaub ntawv mus rau STL lossis lwm hom 3D-printing.
Txawm koj pib ua koj cov khoom siv NURBS lossis mesh nyob ntawm koj nyiam. Yog tias koj xav tau qhov kev pab cuam yooj yim dua uas koj tsis tas yuav hloov pauv, pib hauv mesh yuav yog qhov kev xaiv zoo tshaj plaws. Yog tias koj xav tau ib qho kev pab cuam uas muab cov nkhaus zoo meej rau koj, xaiv ib qho uas siv NURBS.
Lwm cov kev pabcuam zoo rau kev nkag siab cov qauv sib txawv yog los ntawm 3D luam ntawv pabcuam chaw haujlwm (xws li Sculpteo thiab Shapeways). Cov tuam txhab no tswj cov hom ntaub ntawv thiab cov qauv los ntawm feem ntau 3D tsim cov kev pab cuam. Lawv feem ntau muaj cov lus qhia zoo thiab cov lus qhia kom tau txais cov ntaub ntawv los luam tawm txoj cai.
