{"id":18,"date":"2005-05-03T06:14:00","date_gmt":"2005-05-03T06:14:00","guid":{"rendered":"http:\/\/www.gisdeveloper.co.kr\/?p=18"},"modified":"2017-01-29T20:31:35","modified_gmt":"2017-01-29T11:31:35","slug":"opengl-tutorial-color","status":"publish","type":"post","link":"http:\/\/www.gisdeveloper.co.kr\/?p=18","title":{"rendered":"[OpenGL Tutorial] Color"},"content":{"rendered":"![\"\uc0ac\uc6a9\uc790](\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1054341589.jpg\")
\uc774\ubc88 \uc7a5\uc5d0\uc11c\ub294 \uc0c9\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\ub3c4\ub85d\ud558\uc790. \uc0c9\uc744 \uc9c0\uc815\ud558\ub294 \uc708\ub3c4\uc6b0\uc988 API\ub85c RGB\ud568\uc218\uac00 \uc788\ub2e4. \uc778\uc790\ub97c 3\uac1c \ubc1b\ub294\ub370 \uac01\uac01 \ube68\uac04\uc0c9, \ub179\uc0c9, \ud30c\ub780\uc0c9\uc744 \uac16\uc73c\uba70 0~255\uc0ac\uc774\uc758 \uac12\uc744 \uac16\ub294\ub2e4. OpenGL\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\uc778\ub370 \uc870\uae08 \ub2e4\ub978 \uac83\uc740 \uc774 3\uac1c\uc758 \uc778\uc790\ub85c \uc2e4\uc218\ud615, \uc815\uc218\ud615, \ubc30\uc5f4\ud615 \ub4f1 \ub2e4\uc591\ud558\uac8c \ucde8\ud55c\ub2e4\ub294 \uac83\uc774\ub2e4. \uc774\ub54c \uc8fc\ubaa9\ud574\uc57c \ud560\uac83\uc740 \uc2e4\uc218\ud615\uc77c\ub54c\uc640 \uc815\uc218\ud615\uc77c\ub54c \uac01 \uac12\uc774 \uac16\uc744\uc218\uc788\ub294 \ubc94\uc704\uc774\ub2e4. \uc2e4\uc218\ud615\uc5d0 \uc788\uc5b4\uc11c\ub294 0~1.0\uc0ac\uc774\uc758 \uac12\uc744 \uac16\uc73c\uba70 \uc815\uc218\ud615\uc740 \uc6b0\ub9ac\uac00 \uc54c\uace0 \uc788\ub294 0~255 \uc0ac\uc774\uc758 \uac12\uc744 \uac16\ub294\ub2e4. \ub610\ud55c \ubc30\uc5f4\uc744 \uc778\uc790\ub85c \ubc1b\ub294 \uacbd\uc6b0 \uadf8 \ubc30\uc5f4\uc758 \uac01 \uc140\uc740 \ube68\uac04\uc0c9, \ub179\uc0c9, \ud30c\ub780\uc0c9\uc758 \uac12\uc744 \uac16\ub294\ub2e4. OpenGL\uc740 \uc774 3\uac1c\uc758 \uc0c9\uc0c1\uac12 \ub9d0\uace0\ub3c4 \ud558\ub098\uc758 \uac12\uc744 \ub354 \uac16\ub294 \uacbd\uc6b0\uac00 \uc788\ub294\ub370 \uc774\uac83\uc740 \ubc14\ub85c \uc54c\ud30c(Alpha) \uac12\uc774\ub2e4. Alpha\uac12\uc740 \ud22c\uba85\ub3c4\ub77c\ub294 \ud2b9\uc131\uac12\uc774\ub2e4. \uc774\uc7a5\uc5d0\uc11c Alpha\uc5d0 \ub300\ud55c \uc124\uba85\uc740 \ud558\uc9c0 \uc54a\uaca0\ub2e4. \uc9c0\uae08\uae4c\uc9c0\uc758 \uc124\uba85\uc774 \uc0c9\uc5d0 \ub300\ud55c \uac83\ub4e4\uc758 \ub300\ubd80\ubd84\uc774\ub2e4. \uc774\uc81c \uc2e4\uc81c \ucf54\ub529\uc744 \ud1b5\ud574 \uc775\ud600\ubcf4\uc790. \uc6b0\ub9ac\ub294 \uc815\uc721\uba74\uccb4\ub97c \uc0dd\uc131\ud558\uace0 \uac01\uba74\uc5d0 \uc11c\ub85c \ub2e4\ub978 \uc0c9\uc744 \uc9c0\uc815\ud574 \ubcf4\ub294 \uac83\uc73c\ub85c \uc774\uc7a5\uc744 \ub9c8\uce60\uae4c\ud55c\ub2e4. <\/P>
\uc6b0\ub9ac\uac00 \uc0ac\uc6a9\ud560 \ucf54\ub4dc\ub294 1\uc7a5\uc758 \uc18c\uc2a4\ucf54\ub4dc\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4.<\/P>
\uba3c\uc800 \uc804\uc5ed \ubcc0\uc218\ub97c \ud558\ub098 \uc120\uc5b8\ud574\uc57c \ud55c\ub2e4. \ubb3c\uccb4\ub97c \uc9c0\uc18d\uc801\uc73c\ub85c \ud68c\uc804\uc2dc\ud0a4\ub294\ub370 \uc0ac\uc6a9\ud558\ub294 \ubcc0\uc218\uc774\ub2e4. \uc18c\uc2a4 \ucf54\ub4dc\uc758 \uc804\uc5ed\ubcc0\uc218\ub97c \uc120\uc5b8\ud558\ub294 \uacf3\uc5d0 \uc544\ub798\uc758 \ucf54\ub4dc\ub97c \ucd94\uac00\ud558\uc790.<\/P><\/p>\n
GLfloat rot = 0.0f;<\/pre>\n\uc774\uc81c \ubb3c\uccb4\ub97c \uadf8\ub9ac\uace0 \uac01\uba74\uc5d0 \uc11c\ub85c \ub2e4\ub978 \uc0c9\uc744 \uc785\ud788\ub294 \ucf54\ub4dc\ub97c \ub9cc\ub4e4\uc5b4\ubcf4\uc790. \ubb3c\uccb4\ub97c \uadf8\ub824\uc8fc\ub294 \ucf54\ub4dc\uc774\ubbc0\ub85c DrawGLScene \ud568\uc218\uc11c \ucf54\ub529\uc744 \ud574\uc8fc\uba74 \ub41c\ub2e4. \ub2e4\uc74c\uc740 \uadf8 \ub0b4\uc6a9\uc774\ub2e4.<\/p>\n
int DrawGLScene(GLvoid)\r\n{\r\n glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);\r\n glLoadIdentity();\r\n glTranslatef(0.0f, 0.0f, -5.0f);\r\n glRotatef(rot, 1.0f, 1.0f, 0.0f);\r\n \r\n glBegin(GL_QUADS);\r\n glColor3f(1.0f, 0.0f, 0.0f); \/\/ 1\uba74\uc744 Red\uc73c\ub85c \uce60\ud55c\ub2e4.\r\n glVertex3f(-1.0f, -1.0f, 1.0f);\r\n glVertex3f(1.0f, -1.0f, 1.0f);\r\n glVertex3f(1.0f, 1.0f, 1.0f);\r\n glVertex3f(-1.0f, 1.0f, 1.0f);\r\n \r\n glColor3f(1.0f, 1.0f, 0.5f); \/\/ 2\uba74\uc744 \ubc1d\uc740 \ub178\ub780\uc0c9\uc73c\ub85c \uce60\ud55c\ub2e4.\r\n glVertex3f(1.0f, 1.0f, 1.0f);\r\n glVertex3f(1.0f, -1.0f, 1.0f);\r\n glVertex3f(1.0f, -1.0f, -1.0f);\r\n glVertex3f(1.0f, 1.0f, -1.0f);\r\n \r\n glColor3f(0.0f, 0.0f, 1.0f); \/\/ 3\uba74\uc744 Blue\ub85c \uce60\ud55c\ub2e4.\r\n glVertex3f(-1.0f, 1.0f, -1.0f);\r\n glVertex3f(-1.0f, -1.0f, -1.0f);\r\n glVertex3f(1.0f, -1.0f, -1.0f);\r\n glVertex3f(1.0f, 1.0f, -1.0f);\r\n \r\n glColor3f(1.0f, 1.0f, 0.0f); \/\/ 4\uba74\uc744 \ub178\ub780\uc0c9\uc73c\ub85c \uce60\ud55c\ub2e4.\r\n glVertex3f(-1.0f, 1.0f, -1.0f);\r\n glVertex3f(-1.0f, -1.0f, -1.0f);\r\n glVertex3f(-1.0f, -1.0f, 1.0f);\r\n glVertex3f(-1.0f, 1.0f, 1.0f);\r\n \r\n glColor3f(0.0f, 1.0f, 1.0f); \/\/ 5\uba74\uc744 Cyan\uc73c\ub85c \uce60\ud55c\ub2e4.\r\n glVertex3f(-1.0f, -1.0f, -1.0f);\r\n glVertex3f(-1.0f, -1.0f, 1.0f);\r\n glVertex3f(1.0f, -1.0f, 1.0f);\r\n glVertex3f(1.0f, -1.0f, -1.0f);\r\n \r\n glColor3f(1.0f, 1.0f, 1.0f); \/\/ 6\uba74\uc758 \ud55c\ucabd \uaf2d\uc9c0\uc810\uc758 \uc0c9 \uc9c0\uc815\r\n glVertex3f(-1.0f, 1.0f, -1.0f);\r\n glColor3f(1.0f, 0.0f, 1.0f); \/\/ 6\uba74\uc758 \ub450\ubc88\uc9f8 \uaf2d\uc9c0\uc810\uc758 \uc0c9\uc9c0\uc815\r\n glVertex3f(-1.0f, 1.0f, 1.0f);\r\n glColor3f(0.0f, 1.0f, 0.0f); \/\/ 6\uba74\uc758 \uc138\ubc88\uc9f8 \uaf2d\uc9c0\uc810\uc758 \uc0c9\uc9c0\uc815\r\n glVertex3f(1.0f, 1.0f, 1.0f);\r\n glColor3f(1.0f, 1.0f, 0.0f); \/\/ 6\uba74\uc758 \ub124\ubc88\uc9f8 \uaf2d\uc9c0\uc810\uc758 \uc0c9\uc9c0\uc815\r\n glVertex3f(1.0f, 1.0f, -1.0f);\r\n glEnd(); rot+=1.0f;\r\n if(rot>359) rot=1.0f; \r\n\r\n return TRUE;\r\n}<\/pre>\n\uc704 \ucf54\ub4dc\uc5d0\uc11c \uc911\uc694\ud55c \uac83\uc740 \uc0c9\uc744 \uc9c0\uc815\ud558\ub294 \ubc29\ubc95\uc774\ub2e4. \uc77c\ub2e8 \uc0c9\uc774 \ud55c\ubc88 \uc9c0\uc815\ub418\uba74 \uadf8 \uc774\ud6c4\ub85c \ub9cc\ub4e4\uc5b4\uc9c0\ub294 \ubaa8\ub4e0 \ubb3c\uccb4\uc5d0 \ub300\ud574\uc11c \uadf8 \uc0c9\uc774 \ubc18\uc601\uc774 \ub41c\ub2e4. GL_QUADS\uc73c\ub85c\uc368 \uba74\uc744 \uc0dd\uc131\ud558\ub294\ub370 \uba74\uc758 \uc0dd\uc131\uc5d0 \uc55e\uc11c \uc0c9\uc744 \uc9c0\uc815\ud574\uc8fc\uba74 \uadf8 \uba74\uc5d0 \uc9c0\uc815\ub41c \uc0c9\uc774 \uce60\ud574\uc9c0\uac8c \ub41c\ub2e4. \uadf8\ub7f0\ub370 \uc57d\uac04 \ub2e4\ub978 \uac83\uc774 \ud558\ub098 \uc788\ub294\ub370 \uadf8\uac83\uc740 6\ubc88\uc9f8 \uba74\uc5d0 \ub300\ud55c \uc0c9\uc758 \uc9c0\uc815\uc774\ub2e4. \uc0c9\uc758 \uc9c0\uc815\uc744 \uac01 \uc810\uc744 \uc9c0\uc815\ud560\ub54c \ub9c8\ub2e4 \ud574\uc8fc\uc5c8\ub294\ub370 \uc774\uac83\uc758 \ud6a8\uacfc\ub294 \ud55c \uc810\uc5d0\uc11c \uc9c0\uc815\ub41c \uc0c9\uacfc \ub2e4\ub978 \ud55c\uc810\uc5d0\uc11c \uc9c0\uc815\ub41c \uc0c9\uc73c\ub85c \ub450 \uc810 \uc0ac\uc774\ub85c \ubd80\ub4dc\ub7ec\uc6b4 \uc0c9\ubcc0\ud654\ub85c\uc368 \uc0c9\uc744 \uc9c0\uc815\ud558\ub294 \uac83\uc774\ub2e4. \uc989 \uc6b0\ub9ac\uac00 \ub9ce\uc774 \ubcf4\ub294 \uadf8\ub77c\uc774\ub514\uc5b8\ud2b8\ub85c \uc0c9\uc774 \uc9c0\uc815\ub418\ub294 \uac83\uc774\ub2e4.
\n
\uc774\uc81c \uc2e4\ud589\ud574\ubcf4\uc790. \uc544\ub798\ub294 \uadf8 \uc2e4\ud589 \uacb0\uacfc\uc774\ub2e4.<\/P>![\"\uc0ac\uc6a9\uc790](\"http:\/\/www.gisdeveloper.co.kr\/wp-content\/uploads\/1\/1051947253.gif\")
\uc2e4\uc81c\ub85c 6\uba74\uc5d0 \ub300\ud574\uc11c \ub2e4\ub978 \uba74\uacfc\ub294 \ub2e4\ub978 \ubaa8\uc2b5\uc73c\ub85c \uc0c9\uc774 \uce60\ud574\uc84c\uc74c\uc744 \uc54c\uc218\uc788\ub2e4.<\/P>
\uc774\ub85c\uc368 \uc0c9\uc5d0 \ub300\ud55c \uac83\ub4e4\uc744 \ub9c8\uce5c\ub2e4.<\/P><\/p>\n
<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\uc774\ubc88 \uc7a5\uc5d0\uc11c\ub294 \uc0c9\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\ub3c4\ub85d\ud558\uc790. \uc0c9\uc744 \uc9c0\uc815\ud558\ub294 \uc708\ub3c4\uc6b0\uc988 API\ub85c RGB\ud568\uc218\uac00 \uc788\ub2e4. \uc778\uc790\ub97c 3\uac1c \ubc1b\ub294\ub370 \uac01\uac01 \ube68\uac04\uc0c9, \ub179\uc0c9, \ud30c\ub780\uc0c9\uc744 \uac16\uc73c\uba70 0~255\uc0ac\uc774\uc758 \uac12\uc744 \uac16\ub294\ub2e4. OpenGL\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\uc778\ub370 \uc870\uae08 \ub2e4\ub978 \uac83\uc740 \uc774 3\uac1c\uc758 \uc778\uc790\ub85c \uc2e4\uc218\ud615, \uc815\uc218\ud615, \ubc30\uc5f4\ud615 \ub4f1 \ub2e4\uc591\ud558\uac8c \ucde8\ud55c\ub2e4\ub294 \uac83\uc774\ub2e4. \uc774\ub54c \uc8fc\ubaa9\ud574\uc57c \ud560\uac83\uc740 \uc2e4\uc218\ud615\uc77c\ub54c\uc640 \uc815\uc218\ud615\uc77c\ub54c \uac01 \uac12\uc774 \uac16\uc744\uc218\uc788\ub294 \ubc94\uc704\uc774\ub2e4. \uc2e4\uc218\ud615\uc5d0 \uc788\uc5b4\uc11c\ub294 0~1.0\uc0ac\uc774\uc758 \uac12\uc744 \uac16\uc73c\uba70 \uc815\uc218\ud615\uc740 \uc6b0\ub9ac\uac00 \uc54c\uace0 \uc788\ub294 … <\/p>\n
\ub354 \ubcf4\uae30 “[OpenGL Tutorial] Color”<\/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],"tags":[3],"class_list":["post-18","post","type-post","status-publish","format-standard","hentry","category-opengl","tag-opengl"],"_links":{"self":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/18","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=18"}],"version-history":[{"count":4,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/18\/revisions"}],"predecessor-version":[{"id":3838,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/18\/revisions\/3838"}],"wp:attachment":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}