{"id":2077,"date":"2021-09-28T19:20:21","date_gmt":"2021-09-28T10:20:21","guid":{"rendered":"https:\/\/sirius10.net\/blog\/wordpress\/?p=2077"},"modified":"2021-09-29T07:42:29","modified_gmt":"2021-09-28T22:42:29","slug":"post-2077","status":"publish","type":"post","link":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/2021\/09\/28\/2077\/","title":{"rendered":"SDL2 \u3067\u76f4\u7dda\u3092\u63cf\u753b\u3059\u308b"},"content":{"rendered":"\n<p>\u3000SDL2 \u306e\u30ec\u30f3\u30c0\u30e9\u3092\u4f7f\u3044\u3001\u7c21\u5358\u306a\u56f3\u5f62\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u76f4\u7dda\u3092\u4e00\u3064\u3060\u3051\u63cf\u753b\u3059\u308b\u306b\u306f\u3001SDL_RanderDrawLine() \u95a2\u6570\u3092\u4f7f\u3044\u307e\u3059\u3002\u5f15\u6570\u306b\u306f\u3001\u30ec\u30f3\u30c0\u30e9\u3001\u59cb\u70b9\u306e xy \u5ea7\u6a19\u3001\u7d42\u70b9\u306e\u5ea7\u6a19\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u5ea7\u6a19\u7cfb\u306f\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u76f4\u4ea4\u5ea7\u6a19\u3068\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u76f4\u4ea4\u5ea7\u6a19<\/h3>\n\n\n\n<p>\u3000\u4e0b\u56f3\u306e\u3088\u3046\u306b x \u8ef8 \u3068 y \u8ef8\u304c\u5782\u76f4\u306b\u4ea4\u308f\u308a\u3001\u4ea4\u308f\u3063\u305f\u70b9\u3092\u539f\u70b9\u3068\u3057\u3066\u3001\u53f3\u306b\u884c\u304f\u3068 x \u304c\u5897\u52a0\u3057\u3066\u3001\u4e0a\u306b\u884c\u304f\u3068 y \u304c\u5897\u52a0\u3057\u307e\u3059\u3002\u304a\u306a\u3058\u307f\u306e\u5ea7\u6a19\u7cfb\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"240\" src=\"https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/xy.png\" alt=\"\" class=\"wp-image-2079\" srcset=\"https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/xy.png 320w, https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/xy-300x225.png 300w\" sizes=\"auto, (max-width: 320px) 100vw, 320px\" \/><figcaption>\u76f4\u4ea4\u5ea7\u6a19<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u3000\u79fb\u52d5\u3001\u56de\u8ee2\u306a\u3069\u4e00\u822c\u7684\u306a\u5ea7\u6a19\u5909\u63db\u3092\u3059\u308b\u5834\u5408\u3001\u3053\u306e\u76f4\u4ea4\u5ea7\u6a19\u7cfb\u3067\u8003\u3048\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19<\/h3>\n\n\n\n<p>\u3000\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u306a\u306b\u304b\u63cf\u753b\u3092\u3059\u308b\u5834\u5408\u306e\u5ea7\u6a19\u306f\u3001\u307b\u3068\u3093\u3069\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002\u30b9\u30af\u30ea\u30fc\u30f3\u306e\u5de6\u4e0a\u304c\u539f\u70b9\u3068\u306a\u308a\u3001\u53f3\u306b\u884c\u304f\u3068 x \u304c\u5897\u52a0\u3057\u3001\u4e0b\u306b\u884c\u304f\u3068 y \u304c\u5897\u52a0\u3057\u307e\u3059\u3002\u3064\u307e\u308a y \u8ef8\u306e\u5411\u304d\u304c\u76f4\u4ea4\u5ea7\u6a19\u7cfb\u3068\u9006\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u57fa\u672c\u7684\u306b\u8ca0\u6570\u306f\u30b9\u30af\u30ea\u30fc\u30f3\u5916\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"240\" src=\"https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/screen.png\" alt=\"\" class=\"wp-image-2082\" srcset=\"https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/screen.png 320w, https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/screen-300x225.png 300w\" sizes=\"auto, (max-width: 320px) 100vw, 320px\" \/><figcaption>\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u3000\u4f8b\u3048\u3070\u3001\u5186\u306e\u65b9\u7a0b\u5f0f\u3092\u4f7f\u3063\u3066\u5186\u3092\u63cf\u753b\u3059\u308b\u6642\u3001\u8a08\u7b97\u3057\u305f\u5024\u306f\u76f4\u4ea4\u5ea7\u6a19\u306e\u5024\u306b\u306a\u308b\u306e\u3067\u3001\u305d\u308c\u3092\u8868\u793a\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u3078\u306e\u5ea7\u6a19\u5909\u63db\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u306e\u5358\u4f4d\u306f\u753b\u7d20\u3068\u306a\u308b\u306e\u3067\u3001320 x 240 \u306e\u753b\u50cf\u3067\u306f\u3001x \u304c 0 \u301c 319\u3001y \u304c 0 \u301c 239 \u304c\u753b\u50cf\u5185\u306e\u5ea7\u6a19\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>(2021.09.29 \u8ffd\u8a18)<br>\u3000Unity \u306a\u3069\u3067\u306f\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u3068\u3057\u3066\u5225\u306a\u5ea7\u6a19\u7cfb\u3092\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002\u3042\u304f\u307e\u3067\u3001Unity \u306e\u307f\u306e\u30ed\u30fc\u30ab\u30eb\u306a\u5ea7\u6a19\u7cfb\u306a\u306e\u3067\u3001\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u4f7f\u3048\u307e\u305b\u3093\u3002\u4e00\u822c\u7684\u306a\u30b9\u30af\u30ea\u30fc\u30f3\u5ea7\u6a19\u306f\u3053\u3053\u3067\u8aac\u660e\u3057\u3066\u3044\u308b\u5185\u5bb9\u306b\u306a\u308a\u307e\u3059\u3002<br>(\u8ffd\u8a18\u3053\u3053\u307e\u3067)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u76f4\u7dda\u3092\u63cf\u304f<\/h2>\n\n\n\n<p>\u3000320 x 240 \u306e\u30b5\u30a4\u30ba\u3067\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u4f5c\u6210\u3057\u3066\u3001\u5de6\u4e0a\u304b\u3089\u53f3\u4e0b\u306e\u5bfe\u89d2\u7dda\u306b\u8d64\u3044\u76f4\u7dda\u3092\u63cf\u304f\u306b\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted file\">    SDL_SetRenderDrawColor(renderer, 0xff, 0, 0, SDL_ALPHA_OPAQUE);\n    SDL_RenderDrawLine(renderer, 0, 0, 319, 239);\n<\/pre>\n\n\n\n<p>\u3000<a href=\"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/2021\/09\/27\/2070\/\">\u524d\u56de\u306e\u8a18\u4e8b<\/a>\u306e\u30bd\u30fc\u30b9\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted file\">#include &lt;stdio.h&gt;\n#include &lt;SDL.h&gt;\n\nint main(int argc, char* argv[]){\n    SDL_Event event;\n    SDL_Window *window;\n    SDL_Renderer *renderer;\n    int quit_flg = 1;\n\n    \/* \u521d\u671f\u5316 *\/\n    if (SDL_Init(SDL_INIT_VIDEO) &lt; 0) {\n        fprintf(stderr, \"SDL_Init(): %s\\n\", SDL_GetError());\n        exit(1);\n    }\n\n    \/* \u30a6\u30a3\u30f3\u30c9\u30a6\u4f5c\u6210 *\/\n    window = SDL_CreateWindow(\"SDL Test\", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 320, 240, SDL_WINDOW_OPENGL);\n    if( window == NULL ) {\n        printf(\"Can not create window\\n\");\n        exit(1);\n    }\n    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);\n    if( renderer == NULL ) {\n        printf(\"Can not create renderer\\n\");\n        exit(1);\n    }\n\n    \/* \u63cf\u753b *\/\n    SDL_SetRenderDrawColor(renderer, 0xdf, 0xff, 0xdf, SDL_ALPHA_OPAQUE);\n    SDL_RenderClear(renderer);\n<span style=\"background-color: #ffff00\" class=\"background-color\">    \/* \u7dda\u306e\u63cf\u753b *\/\n    SDL_SetRenderDrawColor(renderer, 0xff, 0, 0, SDL_ALPHA_OPAQUE);\n    SDL_RenderDrawLine(renderer, 0, 0, 319, 239);<\/span>\n    SDL_RenderPresent(renderer);\n\n    \/* \u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7 *\/\n    while(quit_flg) {\n        while( SDL_PollEvent(&amp;event) ) {\n            switch (event.type) {\n            case SDL_KEYDOWN:\n            case SDL_QUIT:\n                quit_flg = 0;\n                break;\n            }\n        }\n    }\n    if (renderer) SDL_DestroyRenderer(renderer);\n    if (window) SDL_DestroyWindow(window);\n\n    SDL_Quit();\n\n    return 0;\n}<\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"324\" height=\"272\" src=\"https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/sdlline.png\" alt=\"\" class=\"wp-image-2083\" srcset=\"https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/sdlline.png 324w, https:\/\/sirius10.net\/blog\/wordpress\/wp-content\/uploads\/2021\/09\/sdlline-300x252.png 300w\" sizes=\"auto, (max-width: 324px) 100vw, 324px\" \/><figcaption>\u5bfe\u89d2\u7dda\u3092\u63cf\u304f<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u3000\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u65b9\u6cd5\u306f\u3001<a href=\"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/2021\/09\/27\/2070\/\">\u524d\u56de\u306e\u8a18\u4e8b<\/a>\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002\u306a\u306b\u304b\u30ad\u30fc\u3092\u62bc\u305b\u3070\u7d42\u4e86\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000SDL2 \u306e\u30ec\u30f3\u30c0\u30e9\u3092\u4f7f\u3044\u3001\u7c21\u5358\u306a\u56f3\u5f62\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3000\u76f4\u7dda\u3092\u4e00\u3064\u3060\u3051\u63cf\u753b\u3059\u308b\u306b\u306f\u3001SDL_RanderDrawLine() \u95a2\u6570\u3092\u4f7f\u3044\u307e\u3059\u3002\u5f15\u6570\u306b\u306f\u3001\u30ec\u30f3\u30c0\u30e9\u3001\u59cb\u70b9\u306e xy \u5ea7\u6a19\u3001\u7d42\u70b9\u306e\u5ea7\u6a19\u3067\u3059\u3002\u305f\u3060\u3057\u3001 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-2077","post","type-post","status-publish","format-standard","hentry","category-sdl2"],"_links":{"self":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=2077"}],"version-history":[{"count":9,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2077\/revisions"}],"predecessor-version":[{"id":2091,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/2077\/revisions\/2091"}],"wp:attachment":[{"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=2077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=2077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sirius10.net\/blog\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=2077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}