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2003/06/18 (01:37) from 61.248.237.181' of 61.248.237.181' | Article Number : 86 |
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(y-y1)/(x-x1)=(y2-y1)/(x2-x1) (y-y1)(x2-x1)=(x-x1)(y2-y1) y=((y2-y1)/(x2-x1))(x-x1)+y1 Á÷¼±ÀÇ ±âº»½Ä Y = mX + b¿¡ ¸ÂÃß¾î¼ m = (y2-y1)/(x2-x1)...±â¿ï±â b = y1-mx1...ÀýÆí À§ÀǽÄÀº x¿¡ ´ëÇÑ yÀÇ º¯È·®À» ±â¼ú. --> xÀÇ º¯È¿¡ ºñÇØ yÀÇ º¯È°¡ Å« ºÎºÐ¿¡¼´Â Á¡¼± ¸ð¾çÀ¸·Î Ãâ·Â ==> yÀÇ º¯È·®ÀÌ Å« ºÎºÐ¿¡¼´Â y¿¡ ´ëÇÑ ½ÄÀ¸·Î ¹Ù²Ù¾î¼ Àû¿ë X = m'Y + b' m'= (x2-x1)/(y2-y1) b'= x1-m'y1 *.Bresemham's Line_Drawint Algorithm ; º¯È·®ÀÌ ¸¹Àº ÃàÀÇ 1¾¿ Áõ°¡¿¡ µû¸¥ ´Ù¸¥ ÃàÀÇ Áõ°¡¿©ºÎ¸¦ °ËÅä ==> Á¤¼öÇüÀ¸·Î °è»ê. -.X¿¡ ´ëÇؼ Àü°³ ÃʱâÁ¶°Ç G = 2Dy - Dx if( G<0 )G = G + 2Dy ; Ãà»ó¿¡ Á¡Âï´Â´Ù.(YÀÇ °ªÀÌ º¯ÇÏÁö ¾Ê´Â´Ù.) else G = G + 2(Dy - Dx) ; Y++ (YÀÇ °ª 1Áõ°¡) -.Y¿¡ ´ëÇؼ Àü°³ ÃʱâÁ¶°Ç G = 2Dx - Dy if( G<0 )G = G + 2Dx else G = G + 2(Dx - Dy) http://www.edepot.com/linebenchmark.html *. Clipping Line http://www.image.ntua.gr/epeaek/clip.html http://www.daimi.au.dk/~mbl/cgcourse/wiki/cohen-sutherland_line-cli.html *. Bezier Curves and Surfaces http://astronomy.swin.edu.au/~pbourke/curves/bezier/ |