{"id":15739,"date":"2025-02-22T06:48:29","date_gmt":"2025-02-21T21:48:29","guid":{"rendered":"http:\/\/www.gisdeveloper.co.kr\/?p=15739"},"modified":"2025-02-24T12:24:40","modified_gmt":"2025-02-24T03:24:40","slug":"glsl-%ec%bd%94%eb%93%9c","status":"publish","type":"post","link":"http:\/\/www.gisdeveloper.co.kr\/?p=15739","title":{"rendered":"GLSL \ucf54\ub4dc"},"content":{"rendered":"<p>\ub2e4\uc74c\uacfc \uac19\uc740 \uacb0\uacfc\ub97c \ud504\ub808\uadf8\uba3c\ud2b8 \uc250\uc774\ub354\ub85c \uc791\uc131\ud55c\ub2e4\uba74 &#8230; ? \uc989, \ud654\uba74\uc758 \ubc18\uc744 \uac00\ub974\uace0 \uac00\ub978 \uc601\uc5ed\uc758 \uc911\uc2ec\uc744 \uc6d0\uc810\uc73c\ub85c \uc0bc\uc73c\uba70 \uc6d0\uc810\uc744 \uae30\uc900\uc73c\ub85c gl_FragCoord \uc9c0\uc810\uc5d0 \ub300\ud55c \uc88c\ud45c(x,y)\uc5d0 \ub300\ud55c \uac01\ub3c4(<code>atan(y,x)<\/code>)\uc5d0 \ub300\ud574 \uc67c\ucabd \uc601\uc5ed\uc740 cos \uac12\uc73c\ub85c, \uc624\ub978\ucabd \uc601\uc5ed\uc740 sin \uac12\uc73c\ub85c \ucc44\uc6c0.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/2025\/02\/\u1109\u1173\u110f\u1173\u1105\u1175\u11ab\u1109\u1163\u11ba-2025-02-22-06.42.52.png\" alt=\"\" width=\"500\" class=\"aligncenter size-full wp-image-15740\" \/><\/p>\n<p>\ubc29\uc2dd\uc740 \uc5ec\ub7ec\uac00\uc9c0\uaca0\uc9c0\ub9cc \uc5ec\uae30\uc11c\ub294 2\uac00\uc9c0 \uad6c\ud604 \ucf54\ub4dc\ub97c \uc5b8\uae09\ud568. \uccab\ubc88\uc9f8\ub294 \uc81c\uc2dc\ub41c \ubb38\uc81c\ub97c \uadf8\ub300\ub85c \ud574\uc11d\ud574 \ud480\uc774\ud55c \uac83.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">\r\nuniform vec2 iResolution;\r\n\r\nvoid main2() {\r\n    vec2 uv = gl_FragCoord.xy \/ iResolution;\r\n  \r\n    vec2 origin = uv.x < 0.5 ? vec2(0.25, 0.5) : vec2(0.75, 0.5);\r\n    vec2 v = uv - origin;\r\n  \r\n    float angle = atan(v.y, v.x);\r\n    float c = cos(angle);\r\n    float s = sin(angle);\r\n    \r\n    vec3 color = uv.x < 0.5 ? vec3(c) : vec3(s);\r\n    \r\n    gl_FragColor = vec4(color, 1.0);\r\n}\r\n<\/pre>\n<p>\ub450\ubc88\uc9f8\ub294 \uc0bc\uac01\ud568\uc218\uc758 \uc6d0\ub9ac\ub97c \uc774\ud574\ud558\uace0 \uc0c1\ud669\uc5d0 \ub9de\uac8c \ucd5c\uc801\ud654\ud574 \uad6c\ud604\ud55c \uac83.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"c\">\r\nuniform vec2 iResolution;\r\n\r\nvoid main() {\r\n  vec2 uv = gl_FragCoord.xy \/ iResolution.xy;\r\n\r\n  vec2 normal = uv.x > .5 ? \r\n    normalize(uv - vec2(0.75, 0.5)) : \r\n    normalize(uv - vec2(0.25, 0.5));\r\n  \r\n  float t = uv.x > .5 ?  normal.y : normal.x;\r\n\r\n  gl_FragColor = vec4(vec3(t), 1.0);\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\ub2e4\uc74c\uacfc \uac19\uc740 \uacb0\uacfc\ub97c \ud504\ub808\uadf8\uba3c\ud2b8 \uc250\uc774\ub354\ub85c \uc791\uc131\ud55c\ub2e4\uba74 &#8230; ? \uc989, \ud654\uba74\uc758 \ubc18\uc744 \uac00\ub974\uace0 \uac00\ub978 \uc601\uc5ed\uc758 \uc911\uc2ec\uc744 \uc6d0\uc810\uc73c\ub85c \uc0bc\uc73c\uba70 \uc6d0\uc810\uc744 \uae30\uc900\uc73c\ub85c gl_FragCoord \uc9c0\uc810\uc5d0 \ub300\ud55c \uc88c\ud45c(x,y)\uc5d0 \ub300\ud55c \uac01\ub3c4(atan(y,x))\uc5d0 \ub300\ud574 \uc67c\ucabd \uc601\uc5ed\uc740 cos \uac12\uc73c\ub85c, \uc624\ub978\ucabd \uc601\uc5ed\uc740 sin \uac12\uc73c\ub85c \ucc44\uc6c0. \ubc29\uc2dd\uc740 \uc5ec\ub7ec\uac00\uc9c0\uaca0\uc9c0\ub9cc \uc5ec\uae30\uc11c\ub294 2\uac00\uc9c0 \uad6c\ud604 \ucf54\ub4dc\ub97c \uc5b8\uae09\ud568. \uccab\ubc88\uc9f8\ub294 \uc81c\uc2dc\ub41c \ubb38\uc81c\ub97c \uadf8\ub300\ub85c \ud574\uc11d\ud574 \ud480\uc774\ud55c \uac83. uniform vec2 iResolution; void main2() { &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/www.gisdeveloper.co.kr\/?p=15739\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;GLSL \ucf54\ub4dc&#8221;<\/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":[4,153,139],"tags":[],"class_list":["post-15739","post","type-post","status-publish","format-standard","hentry","category-opengl","category-shader","category-webgl"],"_links":{"self":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/15739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15739"}],"version-history":[{"count":7,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/15739\/revisions"}],"predecessor-version":[{"id":15747,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/15739\/revisions\/15747"}],"wp:attachment":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15739"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}