Dab tsi yog Bezier nkhaus thiab nws cov khoom?
Dab tsi yog Bezier nkhaus thiab nws cov khoom?

Video: Dab tsi yog Bezier nkhaus thiab nws cov khoom?

Video: Dab tsi yog Bezier nkhaus thiab nws cov khoom?
Video: Yog Vim Dab Tsi - Maiv Choj (cover) 2024, Kaum ib hlis
Anonim

Cov khoom ntawm Bezier Curves

Lawv feem ntau ua raws li cov duab ntawm tus tswj polygon, uas muaj cov ntu uas koom nrog cov ntsiab lus tswj. Lawv ib txwm dhau los ntawm thawj thiab qhov kawg tswj cov ntsiab lus. Lawv muaj nyob rau hauv lub convex hull ntawm lawv txhais controlpoints.

Ib yam li ntawd, koj tuaj yeem nug, Bezier nkhaus txhais li cas?

A Bezier nkhaus yog lej txhais nkhaus siv nyob rau hauv ob-dimensional graphic daim ntaub ntawv. Cov nkhaus yog txhais los ntawm plaub lub ntsiab lus: thawj qhov chaw thiab qhov kawg ntawm txoj haujlwm (uas yog hu ua "anchors") thiab ob lub ntsiab lus nruab nrab (uas yog hu ua "kho").

Tsis tas li ntawd, Bezier nkhaus ua haujlwm li cas? Ib txoj hauv kev tso cai rau koj los txhais cov duab uas muaj tag nrho cov yam ntxwv koj nyiam. Los piav txog qhov tshwj xeeb Béziercurve , txhua yam koj yuav tsum tau ua yog txiav txim siab controlpoints ntawm a Bézier nkhaus . Tom ntej no peb blocks ofcode piav txog ib tug linear Bézier nkhaus , ib quadratic Bézier nkhaus i kub Béziercurve.

Qhov thib ob, dab tsi yog qhov zoo ntawm convex hull vaj tse hauv Bezier nkhaus?

Cov convex hull khoom xyuas kom meej tias aparametric nkhaus yuav tsis dhau sab nraum lub convexhull tsim los ntawm plaub tswj vertices. Raws li xws li, nws qiv ameasure ntawm kev kwv yees rau lub nkhaus . Nws tsis yog ib lub caij nyoog uas lub hauv paus ua haujlwm rau Bezier nkhaus muaj cov convex hull khoom.

Bezier nkhaus siv qhov twg?

A Bézier nkhaus yog parametric nkhaus nquag siv hauv computer graphics, animation, modeling, CAD, CAGD, thiab ntau lwm yam hauj lwm. Bezier nkhaus thiab nto yog nkhaus sau hauvBernstein hauv paus daim ntawv; yog li ntawd, lawv paub ntau xyoo dhau los. Txawm li cas los xij, cov ntawv thov no yog siv hnyav tsuas yog hauv 30 xyoo dhau los.

Pom zoo: