{"id":669,"date":"2006-08-09T02:00:00","date_gmt":"2006-08-08T17:00:00","guid":{"rendered":"https:\/\/ecoop.net\/memo\/2006-08-09-2.html"},"modified":"2006-08-09T02:00:00","modified_gmt":"2006-08-08T17:00:00","slug":"2006-08-09-2","status":"publish","type":"post","link":"https:\/\/www.ecoop.net\/memo\/archives\/2006-08-09-2.html","title":{"rendered":"GD \u3067\u30de\u30b9\u30af\u51e6\u7406"},"content":{"rendered":"

\n\u3075\u3068\u3001ImageLayerEffect()<\/a> \u3068\u3044\u3046\u95a2\u6570\u3092\u898b\u4ed8\u3051\u305f\u306e\u3067\u3059\u304c\u3001\u60c5\u5831\u304c\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u4f7f\u3044\u65b9\u3092\u66f8\u3044\u3066\u304a\u304d\u307e\u3059\u3002
\n 
\nUser Contributed Notes \u3088\u308a..\n<\/p>\n

bool imagelayereffect ( resource image, int effect )
\n 
\n\u3053\u306e\u95a2\u6570\u306f\u5168\u3066\u306e\u63cf\u753b\u95a2\u6570\u306e\u51e6\u7406\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3068\u3044\u3046\u70b9\u3067\u3001\u65e2\u5b58\u306e\u95a2\u6570 ImageAlphaBlending() \u3068\u4f3c\u3066\u3044\u307e\u3059\u3002(\u4ee5\u4e0b\u306b\u793a\u3059)\u30a8\u30d5\u30a7\u30af\u30c8\u30e2\u30fc\u30c9\u3092\u5207\u66ff\u3048\u308b\u3053\u3068\u3067\u65e2\u5b58\u306e\u95a2\u6570\u306e\u6a5f\u80fd\u3092\u62e1\u5f35\u3067\u304d\u307e\u3059\u3002
\n 
\neffect \u306b\u306f\u4ee5\u4e0b\u306e\u3046\u3061\u3044\u305a\u308c\u304b\u4e00\u3064\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002
\n 
\nIMG_EFFECT_REPLACE
\n\u30d4\u30af\u30bb\u30eb\u7f6e\u63db\u3092\u5229\u7528\u3057\u307e\u3059(ImageAlphaBlending(FALSE) \u3068\u540c\u7b49)
\n 
\nIMG_EFFECT_NORMAL
\n\u901a\u5e38\u306e\u30d4\u30af\u30bb\u30eb\u30d6\u30ec\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5229\u7528\u3057\u307e\u3059(ImageAlphaBlending(TRUE) \u3068\u540c\u7b49)
\n 
\nIMG_EFFECT_OVERLAY
\n \u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u30eb\u30fc\u30c1\u30f3\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u306f\u3001\u9ed2\u3044\u4e0b\u5730\u306e\u30d4\u30af\u30bb\u30eb\u306f\u9ed2\u306e\u307e\u307e\u3001\u767d\u3044\u4e0b\u5730\u306e\u30d4\u30af\u30bb\u30eb\u306f\u767d\u306e\u307e\u307e\u3067\u3059\u304c\u3001\u30b0\u30ec\u30fc\u306e\u4e0b\u5730\u306e\u30d4\u30af\u30bb\u30eb\u306b\u5bfe\u3057\u3066\u306f\u4e0a\u306b\u4e57\u308b\u30d4\u30af\u30bb\u30eb\u306e\u8272\u3092\u3068\u308a\u307e\u3059\u3002\n<\/p><\/blockquote>\n

 
\n\u5f53\u7136\u6c17\u306b\u306a\u308b\u306e\u306f\u3001IMG_EFFECT_OVERLAY \u3067\u3059\u3002
\n\u8aac\u660e\u306b\u3042\u308b\u4e0b\u5730\u306e\u30d4\u30af\u30bb\u30eb(background pixels)\u3068\u3044\u3046\u306e\u306f\u3001\u305f\u3068\u3048\u3070 imagecopy() \u3092\u4f7f\u3046\u6642\u306e\u3001\u30b3\u30d4\u30fc\u5148\u306e\u753b\u50cf\u306e\u305d\u308c\u305e\u308c\u306e\u30d4\u30af\u30bb\u30eb\u3001\u4e0a\u306b\u4e57\u308b\u30d4\u30af\u30bb\u30eb(foreground pixels)\u3068\u3044\u3046\u306e\u306f\u30b3\u30d4\u30fc\u5143\u306e\u753b\u50cf\u306e\u305d\u308c\u305d\u308c\u306e\u30d4\u30af\u30bb\u30eb\u306b\u3042\u305f\u308a\u307e\u3059\u3002
\n 
\n\u4e0b\u5730\u304c\u30b0\u30ec\u30fc(0x7F7F7F)\u306e\u6642\u306f\u4e0a\u306b\u4e57\u308b\u8272\u3001
\nRGB \u306e\u305d\u308c\u305e\u308c\u304c 0 \u306b\u8fd1\u4ed8\u304f\u307b\u3069\u3001\u4e0a\u306b\u4e57\u308b\u8272\u306e\u305d\u308c\u305e\u308c\u306e\u8272\u3092\u6697\u304f\u3057\u30010\u306b\u306a\u308b\u3068\u5143\u306e\u8272\u306b\u3088\u3089\u305a 0 \u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u5168\u3066\u304c0\u306b\u306a\u308b\u3068\u771f\u9ed2(0x000000)\u306b\u306a\u308a\u307e\u3059\u3002
\n\u540c\u69d8\u306b FF \u306b\u8fd1\u4ed8\u304f\u307b\u3069\u3001\u5143\u306e\u8272\u304c\u660e\u308b\u304f\u306a\u308a\u5168\u3066\u304c FF \u306b\u306a\u308b\u3068\u771f\u3063\u767d(0xFFFFFF)\u306b\u306a\u308b\u3088\u3046\u3067\u3059\u3002
\n 
\n\u4f8b: \u753b\u50cf\u306e\u4efb\u610f\u306e\u90e8\u5206\u3092\u9ed2\u306b\u5857\u308a\u3064\u3076\u3059\n<\/p>\n

$im = imagecreatefromjpeg(“sample.jpg”); \/\/ \u4efb\u610f\u306e\u5143\u753b\u50cf
\n\/\/ \u753b\u50cf\u30b5\u30a4\u30ba
\n$w = imagesx($im);
\n$h = imagesy($im);
\n\/\/ \u975e\u900f\u904e
\n$c_visible = 0x007F7F7F;
\n\/\/ \u80cc\u666f(\u9ed2)
\n$c_bg = 0x00000000;
\n\/\/ \u4e2d\u592e\u306b\u5186\u306e\u3042\u308b\u30de\u30b9\u30af\u3092\u4f5c\u6210
\n$im_mask = imagecreatetruecolor($w,$h);
\nimageFilledRectangle($im_mask, 0,0, $w,$h, $c_bg);
\nimageFilledEllipse ($im_mask, $w\/2,$h\/2, $w,$h, $c_visible);
\n 
\n\/\/ \u30b3\u30d4\u30fc\u5148\u306e\u30a8\u30d5\u30a7\u30af\u30c8\u30e2\u30fc\u30c9\u3092\u5909\u66f4(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f IMG_EFFECT_NORMAL)
\nimagelayereffect($im_mask, IMG_EFFECT_OVERLAY);
\n 
\n\/\/ \u5143\u753b\u50cf\u306b\u30de\u30b9\u30af\u3092\u9069\u7528(\u7d50\u679c\u306f\u30de\u30b9\u30af\u306b\u4e0a\u66f8\u304d)
\nimagecopy($im_mask, $im, 0,0, 0,0, $w,$h);
\nimagedestroy($im);
\n 
\n\/\/ \u30de\u30b9\u30af\u7d50\u679c\u3092\u51fa\u529b
\nimagepng($im_mask);
\nimagedestroy($im_mask);\n<\/p><\/blockquote>\n

 
\n\u975e\u900f\u904e\u3068\u3042\u308b\u90e8\u5206\u3092\u3001 \u305f\u3068\u3048\u3070 0x00FF007F \u306b\u3059\u308b\u3068\u3001\u975e\u900f\u904e\u90e8\u5206\u306e\u305d\u308c\u305e\u308c\u306e\u30d4\u30af\u30bb\u30eb\u306b\u5bfe\u3057\u3001R \u8981\u7d20\u3092 FF, G \u8981\u7d20\u3092 0, B \u8981\u7d20\u3092\u305d\u306e\u307e\u307e\u3067\u51fa\u529b\u3057\u307e\u3059\u3002
\n \t
\n\u307e\u305f\u3001\u03b1\u5024\u3082\u7d44\u5408\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002
\n 
\n\u4f8b:\u753b\u50cf\u306e\u4efb\u610f\u306e\u90e8\u5206\u3092\u900f\u904e\u3059\u308b\n<\/p>\n

$im = imagecreatefromjpeg(“sample.jpg”); \/\/ \u4efb\u610f\u306e\u5143\u753b\u50cf
\n\/\/ \u753b\u50cf\u30b5\u30a4\u30ba
\n$w = imagesx($im);
\n$h = imagesy($im);
\n\/\/ \u975e\u900f\u904e
\n$c_visible = 0x007F7F7F;
\n\/\/ \u80cc\u666f(\u900f\u904e)
\n$c_bg = 0x7F7F7F7F;
\n\/\/ \u4e2d\u592e\u306b\u5186\u306e\u3042\u308b\u30de\u30b9\u30af\u3092\u4f5c\u6210
\n$im_mask = imagecreatetruecolor($w,$h);
\nimagelayereffect($im_mask, IMG_EFFECT_REPLACE); \/\/ \u900f\u904e\u8272\u5857\u308a\u306e\u305f\u3081\u4e0a\u66f8\u304d\u30e2\u30fc\u30c9\u306b\u5909\u66f4\u3002
\nimageFilledRectangle($im_mask, 0,0, $w,$h, $c_bg);
\nimageFilledEllipse ($im_mask, $w\/2,$h\/2, $w,$h, $c_visible);
\nimagelayereffect($im_mask, IMG_EFFECT_NORMAL); \/\/ \u900f\u904e\u8272\u3092\u900f\u904e\u3059\u308b\u305f\u3081\u901a\u5e38\u30e2\u30fc\u30c9\u306b\u623b\u3059\u3002
\n 
\n\/\/ \u30b3\u30d4\u30fc\u5148\u306e\u30a8\u30d5\u30a7\u30af\u30c8\u30e2\u30fc\u30c9\u3092\u5909\u66f4(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f IMG_EFFECT_NORMAL)
\nimagelayereffect($im_mask, IMG_EFFECT_OVERLAY);
\n 
\n\/\/ \u5143\u753b\u50cf\u306b\u30de\u30b9\u30af\u3092\u9069\u7528(\u7d50\u679c\u306f\u30de\u30b9\u30af\u306b\u4e0a\u66f8\u304d)
\nimagecopy($im_mask, $im, 0,0, 0,0, $w,$h);
\n\/\/ \u900f\u904e\u8272\u3092\u4fdd\u5b58\u3059\u308b\u8a2d\u5b9a
\nimagesavealpha($im_mask, true);
\n 
\nimagepng($im_mask);
\nimagedestroy($im);\n<\/p><\/blockquote>\n

\n","protected":false},"excerpt":{"rendered":"

\u3075\u3068\u3001ImageLayerEffect() \u3068\u3044\u3046\u95a2\u6570\u3092\u898b\u4ed8\u3051\u305f\u306e\u3067\u3059\u304c\u3001\u60c5\u5831\u304c\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u4f7f\u3044\u65b9\u3092\u66f8\u3044\u3066\u304a\u304d\u307e\u3059\u3002   User Contributed Notes \u3088\u308a.. bool imagelayer … \u7d9a\u304d\u3092\u8aad\u3080 GD \u3067\u30de\u30b9\u30af\u51e6\u7406<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[32],"class_list":["post-669","post","type-post","status-publish","format-standard","hentry","tag-php"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/669","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/comments?post=669"}],"version-history":[{"count":0,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/posts\/669\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/media?parent=669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/categories?post=669"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoop.net\/memo\/wp-json\/wp\/v2\/tags?post=669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}