Add window utilities

include/window.h

@@ -0,0 +1,56 @@
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include "SDL_pixels.h"
+#include "aliases/aliases.h"
+#include <SDL2/SDL_render.h>
+#include <SDL2/SDL_video.h>
+#include <stdbool.h>
+
+typedef struct point point_t;
+typedef struct line line_t;
+typedef struct triangle triangle_t;
+typedef struct window window_t;
+
+struct point {
+  i32 x;
+  i32 y;
+};
+
+struct line {
+  point_t p0;
+  point_t p1;
+};
+
+struct triangle {
+  point_t p0;
+  point_t p1;
+  point_t p2;
+};
+
+struct window {
+  u64 width;
+  u64 height;
+  const char *title;
+  SDL_Window *window;
+  SDL_Renderer *renderer;
+};
+
+typedef struct colour colour_t;
+struct colour {
+  union {
+    u32 abgr;
+    SDL_Color colour;
+  };
+};
+
+bool init_window(window_t *wnd, const char *title, u64 width, u64 height);
+void cleanup_window(window_t *wnd);
+void clear_window(const window_t *wnd, colour_t colour);
+void swap_buffers(const window_t *wnd);
+void draw_point(const window_t *wnd, point_t p, colour_t colour);
+void draw_line(const window_t *wnd, const line_t *ln, colour_t colour);
+void draw_triangle(const window_t *wnd, const triangle_t *triangle,
+                   colour_t colour);
+
+#endif // !WINDOW_H