{"id":295602,"date":"2019-12-17T16:21:02","date_gmt":"2019-12-17T16:21:02","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=295602"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=295602","title":{"rendered":"\u0423\u0440\u043e\u043a\u0438 \u043f\u043e SDL 2: \u0423\u0440\u043e\u043a 7 \u2014 Viewport"},"content":{"rendered":"\n<div class=\"post__text post__text-html js-mediator-article\" id=\"post-content-body\" data-io-article-url=\"https:\/\/habr.com\/ru\/post\/480252\/\">\u0412\u0441\u0435\u043c \u043f\u0440\u0438\u0432\u0435\u0442! \u042f \u0432\u0435\u0440\u043d\u0443\u043b\u0441\u044f \u0441 \u043d\u043e\u0432\u044b\u043c \u0443\u0440\u043e\u043a\u043e\u043c \u0434\u043b\u044f \u0432\u0430\u0441! \u0410 \u0435\u0441\u043b\u0438 \u0432\u0430\u043c \u0432\u0434\u0440\u0443\u0433 \u043d\u0430\u0434\u043e\u0435\u0441\u0442 \u0436\u0434\u0430\u0442\u044c \u0443\u0440\u043e\u043a\u0430 \u043e\u0442 \u043c\u0435\u043d\u044f, \u0432\u044b \u0432\u0441\u0435\u0433\u0434\u0430 \u0441\u043c\u043e\u0436\u0435\u0442\u0435 \u043d\u0430\u0439\u0442\u0438 \u044d\u0442\u0438 \u0443\u0440\u043e\u043a\u0438 \u043d\u0430 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u043c <a href=\"http:\/\/lazyfoo.net\/tutorials\/SDL\/index.php#Event%20Driven%20Programming\">\u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n<p>  \u0427\u0442\u043e \u0436, \u0434\u0430\u0432\u0430\u0439\u0442\u0435 \u043d\u0430\u0447\u043d\u0435\u043c 7-\u0439 \u043f\u043e \u0441\u0447\u0435\u0442\u0443 \u0443\u0440\u043e\u043a\u0443 \u0441 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c<\/p>\n<h2><a href=\"http:\/\/lazyfoo.net\/tutorials\/SDL\/09_the_viewport\/index.php\">Viewport<\/a><\/h2>\n<p><a name=\"habracut\"><\/a><br \/>  Viewport \u0441 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0438\u0442\u044c\u0441\u044f \u043a\u0430\u043a \u043c\u0435\u0441\u0442\u043e \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430, \u0438\u043b\u0438 \u0436\u0435 \u0432 \u043d\u0430\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u2014 \u044d\u0442\u043e \u043c\u0435\u0441\u0442\u043e \u043e\u0442\u0440\u0438\u0441\u043e\u0432\u043a\u0438. \u0421\u0443\u0442\u044c \u0442\u0430\u043a\u0430\u044f: \u043c\u044b \u0431\u0435\u0440\u0435\u043c \u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u0435\u043c \u043f\u043e\u0432\u0435\u0440\u0445\u043d\u043e\u0441\u0442\u044c \u0440\u0438\u0441\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435 \u0432\u0441\u0435\u043c \u043e\u043a\u043d\u043e\u043c, \u0430 \u043a\u0430\u043a\u043e\u0439-\u0442\u043e \u0435\u0433\u043e \u0447\u0430\u0441\u0442\u044c\u044e. \u042d\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0433\u043e\u0434\u0438\u0442\u044c\u0441\u044f, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0434\u043b\u044f \u0440\u0438\u0441\u043e\u0432\u0430\u043d\u0438\u044f \u043c\u0438\u043d\u0438\u043a\u0430\u0440\u0442\u044b \u0432 \u0438\u0433\u0440\u0435.<\/p>\n<p>  \u041f\u043e \u0442\u0435\u043e\u0440\u0438\u0438 \u0443 \u043c\u0435\u043d\u044f \u0432\u0441\u0451, \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0438\u043c \u043a \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435.<\/p>\n<pre><code class=\"cpp\">#include &lt;SDL2\/SDL.h&gt; #include &lt;SDL2\/SDL_image.h&gt; #include &lt;iostream&gt;  using namespace std;  const int SCREEN_SIZE[2] = {640, 480};  SDL_Window *window = NULL; SDL_Renderer *ren = NULL; SDL_Texture *flower = NULL; <\/code><\/pre>\n<p>  \u0414\u043b\u044f \u043d\u0430\u0447\u0430\u043b\u0430, \u043a\u0430\u043a \u0432\u0441\u0435\u0433\u0434\u0430 \u043e\u0431\u044a\u044f\u0432\u043b\u044f\u0435\u043c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435.<\/p>\n<p>  \u0420\u0438\u0441\u043e\u0432\u0430\u0442\u044c \u0431\u0443\u0434\u0435\u043c \u044d\u0442\u043e\u0442 \u0446\u0432\u0435\u0442\u043e\u0447\u0435\u043a.<\/p>\n<div style=\"text-align:center;\"><img decoding=\"async\" src=\"https:\/\/habrastorage.org\/webt\/u3\/cn\/km\/u3cnkmv9ovy0xyfzdl-qsyksiq4.png\" alt=\"image\"><\/div>\n<p>  <\/p>\n<div class=\"spoiler\"><b class=\"spoiler_title\">init<\/b><\/p>\n<div class=\"spoiler_text\">\n<pre><code class=\"cpp\">bool init() {     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS) != 0) {         cout &lt;&lt; \"Can't init SDL: \" &lt;&lt; SDL_GetError() &lt;&lt; endl;         return false;     }     int flags = IMG_INIT_PNG;     if (!(IMG_Init(flags)&amp;flags)) {         cout &lt;&lt; \"Can't init IMG: \" &lt;&lt; IMG_GetError() &lt;&lt; endl;         return false;     }     window = SDL_CreateWindow(\"VIEWPORT\", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_SIZE[0], SCREEN_SIZE[1], SDL_WINDOW_SHOWN);     if (window == NULL) {         cout &lt;&lt; \"Can't create window: \" &lt;&lt; SDL_GetError() &lt;&lt;endl;         return false;     }     ren = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);     if (ren == NULL) {         cout &lt;&lt; \"Can't create renderer: \" &lt;&lt; SDL_GetError() &lt;&lt;endl;         return false;     }     return true; } <\/code><\/pre>\n<p>  <\/div>\n<\/div>\n<p>  <\/p>\n<div class=\"spoiler\"><b class=\"spoiler_title\">load<\/b><\/p>\n<div class=\"spoiler_text\">\n<pre><code class=\"cpp\">bool load() {     SDL_Surface *temp_surf = NULL;     temp_surf = IMG_Load(\"flower.png\");     if (temp_surf == NULL) {         cout &lt;&lt; \"Can't load image: \" &lt;&lt; IMG_GetError() &lt;&lt; endl;         return false;     }     flower = SDL_CreateTextureFromSurface(ren, temp_surf);     if (flower == NULL) {         cout &lt;&lt; \"Can't create texture from surface: \" &lt;&lt; SDL_GetError() &lt;&lt; endl;         SDL_FreeSurface(temp_surf);         temp_surf = NULL;         return false;     }     return true; } <\/code><\/pre>\n<p>  <\/div>\n<\/div>\n<p>  <\/p>\n<div class=\"spoiler\"><b class=\"spoiler_title\">quit<\/b><\/p>\n<div class=\"spoiler_text\">\n<pre><code class=\"cpp\">void quit() {     SDL_DestroyWindow(window);     window = NULL;      SDL_DestroyRenderer(ren);     ren = NULL;      SDL_DestroyTexture(flower);     flower = NULL;      SDL_Quit();     IMG_Quit(); } <\/code><\/pre>\n<p>  <\/div>\n<\/div>\n<p>  \u0424\u0443\u043d\u043a\u0446\u0438\u0438 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438, \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0438 \u0440\u0430\u0437\u044b\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u044f \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u043d\u0435 \u0431\u0443\u0434\u0443, \u0442\u0430\u043a \u043a\u0430\u043a \u043e\u043d\u0438 \u043f\u043e\u0447\u0442\u0438 \u0438\u0434\u0435\u043d\u0442\u0438\u0447\u043d\u044b \u0441 \u0442\u0435\u043c\u0438, \u0447\u0442\u043e \u0431\u044b\u043b\u0438 \u0440\u0430\u043d\u0435\u0435.<\/p>\n<p>  \u0410 \u0442\u0435\u043f\u0435\u0440\u044c \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0438\u043c \u043a \u0441\u0430\u043c\u043e\u043c\u0443 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u043c\u0443:<\/p>\n<pre><code class=\"cpp\">int main() {     if (!init()) {         quit();         return 1;     }     if (!load()) {         quit();         return 1;     }      SDL_Rect top_vp = {0, 0, SCREEN_SIZE[0], SCREEN_SIZE[1] \/ 2};     SDL_Rect bottom_vp = {0, SCREEN_SIZE[1] \/ 2, SCREEN_SIZE[0], SCREEN_SIZE[1] \/ 2}; <\/code><\/pre>\n<p>  \u0417\u0434\u0435\u0441\u044c \u043c\u044b \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u043b\u0438 <b>SDL<\/b>, \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u043b\u0438 \u043a\u0430\u0440\u0442\u0438\u043d\u043a\u0443 \u0438 \u0441\u043e\u0437\u0434\u0430\u043b\u0438 \u0434\u0432\u0430 \u043f\u0440\u044f\u043c\u043e\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0430\u0445\u043e\u0434\u044f\u0442\u0441\u044f \u043e\u0434\u0438\u043d \u043f\u043e\u0434 \u0434\u0440\u0443\u0433\u0438\u043c \u0438 \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0442 \u0432\u0441\u044e \u0448\u0438\u0440\u0438\u043d\u0443 \u043e\u043a\u043d\u0430. \u042d\u0442\u043e \u0431\u0443\u0434\u0443\u0442 \u043d\u0430\u0448\u0438 <b>viewport<\/b>\u044b.<\/p>\n<pre><code class=\"cpp\">    SDL_RenderSetViewport(ren, &amp;top_vp);     SDL_RenderCopy(ren, flower, NULL, NULL);      SDL_RenderSetViewport(ren, &amp;bottom_vp);     SDL_RenderCopy(ren, flower, NULL, NULL); <\/code><\/pre>\n<p>  \u0414\u0430\u043b\u0435\u0435 \u043c\u044b \u0443\u0436\u0435 \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u043c \u0440\u0438\u0441\u043e\u0432\u0430\u0442\u044c. \u041f\u0435\u0440\u0432\u044b\u043c \u0434\u0435\u043b\u043e\u043c \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u043c\u0435\u0441\u0442\u043e \u0440\u0438\u0441\u043e\u0432\u0430\u043d\u0438\u044f. \u0414\u0435\u043b\u0430\u0435\u0442\u0441\u044f \u044d\u0442\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 <b>SDL_RenderSetViewport<\/b>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u0442 \u0434\u0432\u0430 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430: \u0440\u0435\u043d\u0434\u0435\u0440 \u0438 \u043f\u0440\u044f\u043c\u043e\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043c\u044b \u0445\u043e\u0442\u0435\u043b\u0438 \u0431\u044b \u0440\u0438\u0441\u043e\u0432\u0430\u0442\u044c. \u041f\u043e\u0441\u043b\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043e\u0431\u043b\u0430\u0441\u0442\u0438, \u043e\u0442\u0440\u0438\u0441\u043e\u0432\u044b\u0432\u0430\u0435\u043c \u0432 \u043d\u0435\u0439 \u043d\u0430\u0448 \u0446\u0432\u0435\u0442\u043e\u0447\u0435\u043a \u0443\u0436\u0435 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u043c \u043c\u0435\u0442\u043e\u0434\u043e\u043c <b>SDL_RenderCopy<\/b>. \u041f\u043e\u0441\u043b\u0435 \u044d\u0442\u043e\u0433\u043e \u043f\u043e\u0432\u0442\u043e\u0440\u044f\u0435\u043c \u0442\u043e\u0436\u0435 \u0441\u0430\u043c\u043e\u0435 \u0434\u043b\u044f \u0432\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u044f\u043c\u043e\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0430.<\/p>\n<pre><code class=\"cpp\">    SDL_RenderPresent(ren);     SDL_Delay(2000);      quit();     return 0; } <\/code><\/pre>\n<p>  \u0414\u0430\u043b\u044c\u0448\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u044f\u0435\u043c \u043e\u043a\u043d\u043e, \u0436\u0434\u0435\u043c 2 \u0441\u0435\u043a\u0443\u043d\u0434\u044b \u0438 \u0437\u0430\u043a\u0430\u043d\u0447\u0438\u0432\u0430\u0435\u043c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0443.<\/p>\n<p>  \u041f\u043e\u0441\u043b\u0435 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438 \u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u044d\u0442\u043e\u0439 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u043c\u044b \u0443\u0432\u0438\u0434\u0438\u043c \u0434\u0432\u0430 \u0441\u043f\u043b\u044e\u0441\u043d\u0443\u0442\u044b\u0445 \u0446\u0432\u0435\u0442\u043a\u0430. \u042d\u0442\u043e \u0432\u0441\u0435, \u0447\u0442\u043e \u044f \u0445\u043e\u0442\u0435\u043b \u0441\u0435\u0433\u043e\u0434\u043d\u044f \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u044c.<\/p>\n<p>  \u0427\u0442\u043e \u0436, \u0432\u043e\u0442 \u0442\u0430\u043a\u043e\u0439 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0441\u044f \u0443\u0440\u043e\u043a, \u0435\u0441\u043b\u0438 \u043f\u043e\u044f\u0432\u044f\u0442\u0441\u044f \u043a\u0430\u043a\u0438\u0435-\u043d\u0438\u0431\u0443\u0434\u044c \u0432\u043e\u043f\u0440\u043e\u0441\u044b, \u0431\u0443\u0434\u0443 \u0440\u0430\u0434 \u043e\u0431\u044a\u044f\u0441\u043d\u0438\u0442\u044c, \u0430 \u0443 \u043c\u0435\u043d\u044f \u0432\u0441\u0435. \u0414\u043e \u0441\u0432\u0438\u0434\u0430\u043d\u0438\u044f!<\/p>\n<p>  <a href=\"https:\/\/habr.com\/ru\/post\/456840\/\">&lt;&lt;<\/a> \u041f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0439 \u0443\u0440\u043e\u043a<\/div>\n<p>               <script class=\"js-mediator-script\">!function(e){function t(t,n){if(!(n in e)){for(var r,a=e.document,i=a.scripts,o=i.length;o--;)if(-1!==i[o].src.indexOf(t)){r=i[o];break}if(!r){r=a.createElement(\"script\"),r.type=\"text\/javascript\",r.async=!0,r.defer=!0,r.src=t,r.charset=\"UTF-8\";var d=function(){var e=a.getElementsByTagName(\"script\")[0];e.parentNode.insertBefore(r,e)};\"[object Opera]\"==e.opera?a.addEventListener?a.addEventListener(\"DOMContentLoaded\",d,!1):e.attachEvent(\"onload\",d):d() } } }t(\"\/\/mediator.mail.ru\/script\/2820404\/\",\"_mediator\")}(window);<\/script>      <br \/> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/post\/480252\/\"> https:\/\/habr.com\/ru\/post\/480252\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\n<div class=\"post__text post__text-html js-mediator-article\" id=\"post-content-body\" data-io-article-url=\"https:\/\/habr.com\/ru\/post\/480252\/\">\u0412\u0441\u0435\u043c \u043f\u0440\u0438\u0432\u0435\u0442! \u042f \u0432\u0435\u0440\u043d\u0443\u043b\u0441\u044f \u0441 \u043d\u043e\u0432\u044b\u043c \u0443\u0440\u043e\u043a\u043e\u043c \u0434\u043b\u044f \u0432\u0430\u0441! \u0410 \u0435\u0441\u043b\u0438 \u0432\u0430\u043c \u0432\u0434\u0440\u0443\u0433 \u043d\u0430\u0434\u043e\u0435\u0441\u0442 \u0436\u0434\u0430\u0442\u044c \u0443\u0440\u043e\u043a\u0430 \u043e\u0442 \u043c\u0435\u043d\u044f, \u0432\u044b \u0432\u0441\u0435\u0433\u0434\u0430 \u0441\u043c\u043e\u0436\u0435\u0442\u0435 \u043d\u0430\u0439\u0442\u0438 \u044d\u0442\u0438 \u0443\u0440\u043e\u043a\u0438 \u043d\u0430 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u043c <a href=\"http:\/\/lazyfoo.net\/tutorials\/SDL\/index.php#Event%20Driven%20Programming\">\u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n<p>  \u0427\u0442\u043e \u0436, \u0434\u0430\u0432\u0430\u0439\u0442\u0435 \u043d\u0430\u0447\u043d\u0435\u043c 7-\u0439 \u043f\u043e \u0441\u0447\u0435\u0442\u0443 \u0443\u0440\u043e\u043a\u0443 \u0441 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c<\/p>\n<h2><a href=\"http:\/\/lazyfoo.net\/tutorials\/SDL\/09_the_viewport\/index.php\">Viewport<\/a><\/h2>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-295602","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/295602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=295602"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/295602\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=295602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=295602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=295602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}