[ActionScript 3.0] 線分ã®äº¤å·®åˆ¤å®šâ”‚miscellaneousä»–ã®ç·šåˆ†ã¨äº¤å·®ã—ã¦ã„る線分ã¯èµ¤ã€äº¤å·®ã—ã¦ã„ãªã„ç·šã¯é’ã§è¡¨ç¤ºã€‚ 線分を延長ã—ãŸç›´ç·šåŒå£«ã®äº¤ç‚¹ã‚’ã¾ãšæ±‚ã‚ã€ãã®äº¤ç‚¹ãŒäº’ã„ã®ç·šåˆ†ã®ä¸¡ç«¯ã®å†…å´ã«ã‚ã‚‹ã‹ã‚’ベクトルã®å†…ç©ã‚’使ã£ã¦æ±‚ã‚ã¦ã„る。 package { import flash.display.*; import flash.geom.*; import flash.events.*; import flash.utils.*; [SWF(width="500", height="500", framerate="30", backgroundColor="#ffffff")] public class LineCross extends Sprite { private var balls:Array; private var WIDTH:int = 500; private var HEIGHT:int = 500; private va
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