1.RGB琛ㄧず鎴栬匒RGB琛ㄧず:
1)32浣嶇殑棰滆壊A,R,G,B鍒嗗埆鍗?浣?涓鍏?涓瓧鑺?32浣?,閭ｄ箞姣忎釜鍒嗛噺
鐨勫彇鍊艱寖鍥翠負(fù)0--255(鍗佽繘鍒?鎴栬?--ff(鍗佸叚榪涘埗)
2)24浣嶇殑棰滆壊,姣忎釜棰滆壊鍒嗛噺鐢?浣嶆潵琛ㄧず.
闂:璇村埌榪欓噷,鏈変漢灝變細(xì)闂?鏈夋病鏈夊叾浠栦綅鏁扮殑棰滆壊,鍏朵粬浣嶆暟鐨勯鑹叉瘡涓?br />鍒嗛噺鍒嗗埆鍗犲嚑浣嶅憿? 姣斿16浣嶇殑 姣斿8浣嶇殑?
浜?棰滆壊鐨勮綆?/p>
1)棰滆壊鍔犳硶:
涓ょ棰滆壊鐨勫悇涓垎閲忓垎鍒浉鍔?
姣斿棰滆壊C1(r1,g1,b1)鍜孋2(r2,g2,b2)
C3 = C1+C2 = (r1+r2,g1+g2,b1+b2)
鐒跺悗榪欐牱鐩稿姞姣忎釜鍒嗛噺鏈夊彲鑳戒細(xì)瓚呰繃鍒嗛噺鐨勫彇鍊艱寖鍥?鎵浠ュ湪鍋氬姞娉曠殑鏃跺?br />闇瑕佸姣忎釜鍒嗛噺榪涜澶勭悊,淇濊瘉鐩稿姞鍚庣殑鍒嗛噺鏄湪姝ｅ父鏁板間箣闂?
2)棰滆壊鐨勮皟鍒?br /> 棰滆壊*鏍囬噺,鍙互杈懼埌棰滆壊鍙樹寒鎴栬呭彉鏆楃殑鏁堟灉,姣斿:
C1*s = (s*r1,s*g1,*b1)
榪欓噷涔熻娉ㄦ剰鍚屼笂鐨勯棶棰?
棰滆壊*棰滆壊,渚嬪C1*C2 = (r1*r2,g1*g2,b1*b2)
榪欓噷涔熻娉ㄦ剰鍚屼笂鐨勯棶棰?
浣跨敤浠ヤ笂3縐嶉鑹茶繘琛屾販鍚堣綆楀彲浠ュ緱鍒板緢澶氭晥鏋?
3)alpha娣峰悎
鍦ˋRGB妯″紡鐨勯鑹蹭腑,A灝辨槸琛ㄧずalpha鍊? alpha鍊肩敤鏉ュ仛涓ょ棰滆壊
鐨勬販鍚堣綆?寰楀埌涓浜涙晥鏋?姣斿鍗婇忔槑鏁堟灉,涓嶉忔槑,鎴栬呭叏閫忔槑,絳夌瓑.
鍋氶忔槑鏁堟灉涓瀹氭槸2縐嶉鑹茶繘琛宎lpha娣峰悎榪愮畻寰楁潵鐨?
浠巃lpha娣峰悎鍏紡灝辮兘鐪嬪嚭鏉ワ細(xì)
鏈緇堝儚绱犻鑹插?= 婧愬儚绱犻鑹插鹼紙灝嗚緇樺埗鐨勶級*alpha+ 鐩殑鍍忕礌棰滆壊鍊?宸茬粡緇樺埗鐨?*(1-alpha)
榪欓噷鐨刟lpha鐨勫彇鍊艱寖鍥翠負(fù)0-1涔嬮棿銆?/p>
涓孌甸忔槑搴︾殑瀹炵幇渚嬪瓙錛?br />float R1 = 255;
float G1 = 0;
float B1 = 0;
float A1 = 0.3f;
float R2 = 255;
float G2 = 255;
float B2 = 255;
float A2 = 1;
//榪涜aphla娣峰悎
DWORD AphlaCorlorR = R1*A1+(1-A1)*(R2); R1鐨?0%棰滆壊 + R2鐨?0%鐨勯鑹詫紝寰楀嚭鏉ョ殑鏁堟灉鎯寵薄鍙煡R2鐨勯鑹叉垚鍒嗗浜涳紝榪欐牱R1鍜孯2鐨勯鑹茶繘琛屾瘮杈冪湅璧鋒潵 R1鐩稿R2鏉ヨ灝辨槸閫忔槑鐨勶紝浣嗕笉鏄崐閫忔槑
DWORD AphlaCorlorG = G1*A1+(1-A1)*(G2); 鍚屼笂
DWORD AphlaCorlorB = B1*A1+(1-A1)*(B2); 鍚屼笂
棰滆壊璁＄畻鐩稿叧鐭ヨ瘑鍙傜収<<3D緙栨垚澶у笀鎶宸?gt;>,絎?绔犺妭8.1.1棰滆壊妯″瀷鍜屾潗璐ㄣ?br />嬈㈣繋鍔犲叆QQ緹?:45811732
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