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ma-rusuke 2007/06/13
3DCG

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æ³•ç·šãŒ n := (Î¸, Ï†) = [sinÎ¸cosÏ† sinÎ¸sinÏ† cosÎ¸]âŠ¤ ã®å¤§å††ã‚’ãƒ‘ãƒ©ãƒ¡ã‚¿å½¢å¼ã§è¡¨ã™ã¨, R(Î¸, Ï†) [cos(t) sin(t) 0]âŠ¤ ã‚ˆã‚Š, [x] [ cos(Î¸)cos(Ï†)cos(t)âˆ’sin(Î¸)sin(t) ] [y]=[ cos(Î¸)sin(Ï†)cos(t)+cos(Ï†)sin(t) ] [z] [âˆ’sin(Î¸)cos(t) ] Gnuplot ã§æç”»ã™ã‚‹ä¾‹ set para th=pi/4 # å¤©é ‚è§’ ph=pi/9 # æ–¹ä½è§’ set arrow to sin(th)*cos(ph), sin(th)*sin(ph), cos(th) # æ³•ç·šãƒ™ã‚¯ãƒˆãƒ« splot [0 to 2*pi] cos(th)*cos(ph)*cos(u)-sin(ph)*sin(u), \ cos(th)*sin(ph)*cos(u)+cos(ph)*si
ma-rusuke 2007/06/05
3DCG

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