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1銆傚綋姝婚攣鍙戠敓鏃訛紝榪愯windbg錛屽茍鍦╢ile鑿滃崟涓嬮夋嫨Attach to a process...
2銆備腑鏂埌璋冭瘯鍣ㄦ椂錛岀敤鍛戒護(hù)~0s鍒囨崲鍒頒富綰跨▼.
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“ 寮у害”鍜?#8220;搴?#8221;鏄害閲忚澶у皬鐨勪袱縐嶄笉鍚岀殑鍗曚綅銆傚氨鍍?#8220;綾?#8221;鍜?#8220;甯傚昂”鏄害閲忛暱搴﹀ぇ灝忕殑涓ょ涓嶅悓鐨勫崟浣嶄竴鏍楓?span class=Apple-converted-space>
鍦╢lash閲岃瀹?鍦ㄦ棆杞搴︼紙rotation錛夐噷鐨勮錛屼互“搴?#8221;涓哄崟浣嶏紱鑰屽湪涓夎鍑芥暟閲岀殑瑙掕浠?#8220;寮у害”涓哄崟浣嶃傝繖涓瀹氭槸鎴戜滑棣栧厛瑕佽浣忕殑錛侊紒錛佷緥濡傦細(xì)rotation2錛嶏紞鏄棆杞?#8220;2搴?#8221;錛泂in錛?#960;/2)錛嶏紞鏄ぇ灝忎負(fù)“π/2寮у害”鐨勮鐨勬寮︺?span class=Apple-converted-space>
浜屻佸姬搴︾殑瀹氫箟
鎵璋?#8220;寮у害鐨勫畾涔?#8221;灝辨槸璇達(dá)紝1寮у害鐨勮澶у皬鏄庢牱瑙勫畾鐨勶紵
鎴戜滑鐭ラ亾“搴?#8221;鐨勫畾涔夋槸錛?#8220;涓ゆ潯灝勭嚎浠庡渾蹇冨悜鍦嗗懆灝勫嚭錛屽艦鎴愪竴涓す瑙掑拰澶硅姝ｅ鐨勪竴孌靛姬銆傚綋榪欐寮ч暱姝ｅソ絳変簬鍦嗗懆闀跨殑360鍒嗕箣涓鏃訛紝涓ゆ潯灝勭嚎鐨勫す瑙掔殑澶у皬涓?搴︺傦紙濡傚浘1錛?span class=Apple-converted-space>
閭ｄ箞錛屽姬搴﹀張鏄庢牱瀹氫箟鐨勫憿? 寮у害鐨勫畾涔夋槸錛氫袱鏉″皠綰夸粠鍦嗗績鍚戝渾鍛ㄥ皠鍑猴紝褰㈡垚涓涓す瑙掑拰澶硅姝ｅ鐨勪竴孌靛姬銆傚綋榪欐寮ч暱姝ｅソ絳変簬鍦嗙殑鍗婂緞鏃訛紝涓ゆ潯灝勭嚎鐨勫す瑙掑ぇ灝忎負(fù)1寮у害銆傦紙濡傚浘2錛?span class=Apple-converted-space>
姣旇緝涓涓嬶紝搴﹀拰寮у害鐨勮繖涓や釜瀹氫箟闈炲父鐩鎬技銆傚畠浠殑鍖哄埆錛屼粎鍦ㄤ簬瑙掓墍瀵圭殑寮ч暱澶у皬涓嶅悓銆傚害鐨勬槸絳変簬鍦嗗懆闀跨殑360鍒嗕箣涓錛岃屽姬搴︾殑鏄瓑浜庡崐寰勩?span class=Apple-converted-space>
綆鍗曠殑璇達(dá)紝寮у害鐨勫畾涔夋槸錛屽綋瑙掓墍瀵圭殑寮ч暱絳変簬鍗婂緞鏃訛紝瑙掔殑澶у皬涓?寮у害銆?span class=Apple-converted-space>
姝や富棰樼浉鍏沖浘鐗囧涓嬶細(xì)
瑙掓墍瀵圭殑寮ч暱鏄崐寰勭殑鍑犲嶏紝閭ｄ箞瑙掔殑澶у皬灝辨槸鍑犲姬搴︺?span class=Apple-converted-space>
瀹冧滑鐨勫叧緋誨彲鐢ㄤ笅寮忚〃紺哄拰璁＄畻錛?span class=Apple-converted-space>
瑙掞紙寮у害錛夛紳寮ч暱/鍗婂緞
鍦嗙殑鍛ㄩ暱鏄崐寰勭殑 2π鍊嶏紝鎵浠ヤ竴涓懆瑙掞紙360搴︼級鏄?2π寮у害銆?span class=Apple-converted-space>
鍗婂渾鐨勯暱搴︽槸鍗婂緞鐨?π鍊嶏紝鎵浠ヤ竴涓鉤瑙掞紙180搴︼級鏄?π寮у害銆?span class=Apple-converted-space>
涓夈佸害璺熷姬搴︿箣闂寸殑鎹㈢畻
鎹笂鎵榪幫紝涓涓鉤瑙掓槸 π 寮у害銆?span class=Apple-converted-space>
鍗?nbsp; 180搴︼紳π寮у害
鐢辨鍙煡錛?span class=Apple-converted-space>
1搴︼紳π/180 寮у害 ( 鈮?.017453寮у害 )
鍥犳錛屽緱鍒?鎶婂害鍖栨垚寮у害鐨勫叕寮忥細(xì)
寮у害錛濆害×π/180
渚嬪錛?span class=Apple-converted-space>
90°錛?0×π/180 錛?#960;/2 寮у害
60°錛?0×π/180 錛?#960;/3 寮у害
45°錛?5×π/180 錛?#960;/4 寮у害
30°錛?0×π/180 錛?#960;/6 寮у害
120°錛?20×π/180 錛?π/3 寮у害
鍙嶈繃鏉ワ紝寮у害鍖栨垚搴︽庝箞綆楋紵
鍥犱負(fù) π寮у害錛?80°
鎵浠?nbsp; 1寮у害錛?80°/π 錛堚増57.3°錛?span class=Apple-converted-space>
鍥犳錛屽彲寰楀埌 鎶婂姬搴﹀寲鎴愬害鐨勫叕寮忥細(xì)
搴︼紳寮у害×180°/π
渚嬪錛?span class=Apple-converted-space>
4π/3 寮у害錛?π/3 ×180°/π
錛?240°
涔熻鏈変簺鏈嬪弸浼?xì)璇村Q岀┒绔熸槸涔樹互“π/180 ”錛岃繕鏄?#8220;180°/π”寰堝鏄撴悶閿欍傚叾瀹炰綘鍙璁頒綇錛?#960;鏄?#960;寮у害錛?80鏄?80搴︺傛垜瑕佸寲鎴愪粈涔堝崟浣嶏紝灝辮鎶婃湁榪欎釜鍗曚綅鐨勬斁鍦ㄥ垎瀛愪笂銆備篃灝辨槸璇存垜瑕佸寲鎴愬姬搴︼紝灝辮鎶?#960;寮у害鏀懼湪鍒嗗瓙涓婏紞錛嶄箻浠?#960;/180 銆傚彟澶栵紝1搴︽瘮1寮у害瑕佸皬寰楀錛屽ぇ綰﹀彧鏈?.017453寮у害錛?#960;/180鈮?.017453錛夈傛墍浠ユ妸搴﹀寲鎴愬姬搴﹀悗錛屾暟瀛楄偗瀹氳鍙樺皬錛岄偅涔堝寲寮у害鏃朵竴瀹氭槸涔樹互π/180 浜嗐傝兘澶熻繖鏍鋒兂涓鎯籌紝灝變笉浼?xì)鎼為敊浜嗐?span class=Apple-converted-space>
鍦ˋS浠ｇ爜閲屾妸“π”鍐欐垚“PI”銆傚張鍥犱負(fù)“π”銆?#8220;sin”閮芥槸“鏁板鍑芥暟”錛屾寜瑙勫畾瑕佸湪鍓嶉潰鍔犱笂“Math.”錛圡ath鏄嫳璇腑“鏁板”Mathematics鐨勭緝鍐欙級,鍔犱笂鍚庡啓鎴?#8220;Math.PI”銆?#8220;Math.sin”銆?span class=Apple-converted-space>
鎵浠?nbsp; sin30°灝卞緱鍐欐垚 Math.sin錛?0*Math.PI/180錛夈傚叾涓皬鎷姬鍐呯殑閮ㄥ垎鏄妸30°鍖栦負(fù)寮у害錛屽嵆30×π/180 銆?span class=Apple-converted-space>
濡傛灉鎶婅繖浜涢兘寮勬槑鐧戒簡錛屼綘鐪嬪埌寮у害錛屼笉浼?xì)鍐嵕p婃秱浜嗗惂銆?span class=Apple-converted-space>
鍘熸枃鍦板潃錛?a style="COLOR: rgb(16,138,198); TEXT-DECORATION: underline" target=_blank>http://hi.baidu.com/kent_edwin/blog/item/9425f0029e06967e3812bb28.html
鍙弬鑰冿細(xì)http://zh.wikipedia.org/zh-cn/%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0
鍙傝冿細(xì)http://www.cnblogs.com/beniao/archive/2009/06/18/1499614.html
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