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^1t2= =5 . =trlel =+ "! =e 121 7. NURBS (Non Uniform Rational B Spline)tCz|. +trI NURBS= Non-Uniform Rational B-spline$ *z}"lE ol= Hl Azl4"J B-spline EI += 9+B *f-a ol*6J+= dql^l alaz)A B-spline{ +^}6}r+. alazl4 B-spline 244 x, y, z9l EE-zl q q ^ rl-E(tromogeneous coordinates) hE +7I6X ae6i= *CgE- r 5ag u}9+ '/JE+. O NURBSgI *do-a B-spline, Bezier, g++dE g.€B + 9l+. @ 42114 4Is.E 4+4 r}* o e +dq tr€ "l z}+Btr}. €) NURBS +de +dq *Edg HIE^I E4allo} " .Jr+. 8. EEoll EEI= +tr1 gql^l= +ql4e E€ql ul= +EE s€H}lql '}1all u}+?t+. €zl4lrlE + EE +Eql 14= cEl4 +8, +iIEqI4 +8, *qI4 +Eql ql6}"l ABd "Jols,Lui. 71. dtr14 +'l .JHI 7l4. ri+E -s€ol4 *zl# EE =4^q 4l+E e+6J ^l+s €tI6Iq u _ r+ ul 4sE g.€6J "ll +,q^lq= +89 "J+tr}. O +E9 7)=+4.(base curve)E 4eI olE6I= € 9l(sweep€) @ 271 +tr=E aE}.qe +C g € 4 @ 7)J-Ee--a+El +"J6IA] +=q ql= € ri(proportional€ +E) @ ,+4. +9 = rounding6J *E(fi1let/round € +tr) uf. ?^llel+4 +trJ fr^I9 E-5:9 -,Lq6J *EqE- +E"l c;I4"J HJ'JC9 714 {s(Duct€ +8, sweep€ +E) trf. a+4Pl +trI c ,l 4 +trr+ +iI q qI4 +trg zil q -J *trge- 7l+* +"J 6I= +E(+qL4 +8, 7l+E4 "J +tr)
129page

7. NURBS 곡면과 곡면
129page

8. 용도에 따른 곡면
129page

7. NURBS 곡면과 곡면
129page

8. 용도에 따른 곡면
129page

7. NURBS 곡면과 곡면
129page

8. 용도에 따른 곡면