\u3084\u30fc\u308c\u3084\u308c\uff0c\u305a\u3044\u3076\u3093\u82e6\u52b4\u3057\u305f\u305e\uff0e
\ngluTessVertex \u306e2,3\u756a\u76ee\u306e\u5f15\u6570\u304c\u540c\u3058\u30b5\u30f3\u30d7\u30eb\u3070\u3063\u304b\u308a\u3060\u3063\u305f\u3051\u3069\uff0c
\n\u3069\u3046\u3084\u30892\u756a\u76ee\u304cOpenGL\u304c\u5185\u90e8\u3067\u4f7f\u3046\u5ea7\u6a19\u3067\uff0c
\n3\u756a\u76ee\u304c vertexCallback \u306e1\u756a\u76ee\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3055\u308c\u3066\uff0c
\ngluTessBeginPolygon \u306e2\u756a\u76ee\u306e\u5f15\u6570\u304c vertexCallback \u306e
\n2\u756a\u76ee\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\u3088\u3046\u3060\uff0e
\n\u305d\u308c\u4ee5\u524d\u306b\u3082\uff0c\u95a2\u6570\u306e\u5ba3\u8a00\u306a\u3069\u3067 CALLBACK \u3092\u3064\u3051\u308b\u3060\u306e\u8272\u3005\u306f\u307e\u308a\u307e\u304f\u308a\u3060\u3063\u305f\uff0e<\/p>\n
typedef struct vd {\ndouble v[3];\ndouble rgb[3];\nint id;\n} VertexData;\nvoid CALLBACK vertexCallback(GLvoid *vertex, void *user_data)\n{\nconst VertexData *ver = (VertexData *) vertex;\ndouble *data = (double*)user_data;\nif (ver) printf(\"pointer(%f,%f,%f)[%f,%f,%f] %d\\n\",ver->v[0],ver->v[1],ver->v[2],\nver->rgb[0],ver->rgb[1],ver->rgb[2], ver->id);\nelse {\nprintf(\"pointer == NULL!?\\n\");\nreturn;\n}\nif (data) printf(\"data (%f,%f,%f)\\n\",\ndata[0],data[1],data[2]);\nelse printf(\"data == NULL!?\\n\");\nglColor3dv(ver->rgb);\nglVertex3dv(ver->v);\n}\n\/* combineCallback is used to create a new vertex when edges\n* intersect. coordinate location is trivial to calculate,\n* but weight[4] may be used to average color, normal, or texture\n* coordinate data. In this program, color is weighted.\n*\/\nvoid CALLBACK combineCallback(GLdouble coords[3],\nVertexData *vertex_data[4],\nGLfloat weight[4], VertexData **dataOut )\n{\nVertexData *vertex;\nint i;\nstatic id = 100;\nvertex = (VertexData *) malloc(sizeof(VertexData));\nvertex->v[0] = coords[0];\nvertex->v[1] = coords[1];\nvertex->v[2] = coords[2];\nfor (i = 0; i < 3; i++)\nvertex->rgb[i] = weight[0] * vertex_data[0]->rgb[i]\n+ weight[1] * vertex_data[1]->rgb[i]\n+ weight[2] * vertex_data[2]->rgb[i]\n+ weight[3] * vertex_data[3]->rgb[i];\nvertex->id = id++;\n*dataOut = vertex;\n}\ngluTessBeginPolygon(tobj, tmp);\ngluTessBeginContour(tobj);\ngluTessVertex(tobj, rect[0].v, &rect[0]);\ngluTessVertex(tobj, rect[1].v, &rect[1]);\ngluTessVertex(tobj, rect[2].v, &rect[2]);\ngluTessVertex(tobj, rect[3].v, &rect[3]);\ngluTessEndContour(tobj);\ngluTessBeginContour(tobj);\ngluTessVertex(tobj, tri[0].v, &tri[0]);\ngluTessVertex(tobj, tri[1].v, &tri[1]);\ngluTessVertex(tobj, tri[2].v, &tri[2]);\ngluTessEndContour(tobj);\ngluTessEndPolygon(tobj);\nglEndList();\n<\/pre>\n\u307e\u3042\u306a\u3093\u306b\u305b\u3088\uff0c\u3053\u308c\u3067\u30bf\u30a4\u30ea\u30f3\u30b0\u306f\u81ea\u524d\u3067\u3084\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u3063\u305f\u308f\u3051\u3060\uff0e
\n\u3042\u3068\u306f\uff0c\u3053\u306e\u30bf\u30a4\u30ea\u30f3\u30b0\u306b\u6e21\u3059\u30dd\u30ea\u30b4\u30f3\u306e\u9802\u70b9\u3092\u4f5c\u308b\u306e\u304c\u554f\u984c\u3060\uff0e
\n\u3044\u3084\uff0c\u9802\u70b9\u306f\u8a08\u7b97\u3067\u304d\u3066\u308b\u304b\u3089\uff0c\u5f8c\u306f\u4e26\u3079\u308b\u3060\u3051\u3060\uff01
\n\u3042\u3068\uff0c\u30b9\u30c6\u30f3\u30b7\u30eb\u30d0\u30c3\u30d5\u30a1\u306b\u3088\u308b\u898b\u304b\u3051\u5012\u3057\u306e\u304d\u308c\u3044\u306a\u7a74\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3084\u30fc\u308c\u3084\u308c\uff0c\u305a\u3044\u3076\u3093\u82e6\u52b4\u3057\u305f\u305e\uff0e gluTessVertex \u306e2,3\u756a\u76ee\u306e\u5f15\u6570\u304c\u540c\u3058\u30b5\u30f3\u30d7\u30eb\u3070\u3063\u304b\u308a\u3060\u3063\u305f\u3051\u3069\uff0c \u3069\u3046\u3084\u30892\u756a\u76ee\u304cOpenGL\u304c\u5185\u90e8\u3067\u4f7f\u3046\u5ea7\u6a19\u3067\uff0c 3\u756a\u76ee\u304c vertexCallback \u306e1\u756a\u76ee\u306e\u5f15\u6570 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[],"class_list":{"0":"post-117","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-3"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=\/wp\/v2\/posts\/117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=117"}],"version-history":[{"count":0,"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=\/wp\/v2\/posts\/117\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tapoblog.0t0.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}