Implemented render

chr6.c

@@ -1,6 +1,8 @@
 #include <SDL2/SDL.h>
 #include <stdio.h>
 
+#define HOR 24
+#define VER 16
 #define PAD 32
 #define ZOOM 4
 #define color1 0x000000
@@ -22,8 +24,8 @@ typedef struct Brush {
 
 unsigned char buffer[4096];
 int colors[] = {color1, color2, color3, color4, color0};
-int WIDTH = 128 * ZOOM + PAD * 2;
-int HEIGHT = 128 * ZOOM + PAD * 2;
+int WIDTH = 8 * HOR * ZOOM + PAD * 2;
+int HEIGHT = 8 * VER * ZOOM + PAD * 2;
 int FPS = 30;
 int GUIDES = 1;
 SDL_Window* gWindow = NULL;
@@ -54,10 +56,10 @@ void
 draw(uint32_t* dst, int id, int color)
 {
 	int ti = id / 64;
-	int px = (ti / 256) * 128;
-	int tx = (ti % 16) * 8;
-	int ty = ((ti / 16) * 8) % 128;
-	int odd = (ti + (ti / 16 + 2)) % 2 == 0;
+	int px = (ti / 256) * (8 * HOR);
+	int tx = (ti % HOR) * 8;
+	int ty = ((ti / HOR) * 8) % 128;
+	int odd = (ti + (ti / HOR + 2)) % 2 == 0;
 	Point p;
 	p.x = px + tx + (id % 8);
 	p.y = ty + ((id % 64) / 8);
@@ -86,8 +88,8 @@ redraw(void)
 void
 write(int tx, int ty, int px, int py, int color)
 {
-	int id = tx + ty * 16;
-	int row = py + id * 16;
+	int id = tx + ty * HOR;
+	int row = py + id * VER;
 	if(id > 255)
 		return;
 	if(color == 0) {
@@ -110,7 +112,7 @@ edit(Brush* b)
 {
 	Point p1;
 	setpt(&p1, b->pos.x - PAD, b->pos.y - PAD);
-	if(p1.x < 0 || p1.y < 0 || p1.x > 128 * ZOOM || p1.y > 128 * ZOOM)
+	if(p1.x < 0 || p1.y < 0 || p1.x > (8 * HOR) * ZOOM || p1.y > (8 * VER) * ZOOM)
 		return;
 	write(
 	    p1.x / (8 * ZOOM),
@@ -177,6 +179,15 @@ load(char* path)
 	redraw();
 }
 
+void
+render()
+{
+	SDL_Surface* surface = SDL_GetWindowSurface(gWindow);
+	SDL_RenderReadPixels(gRenderer, NULL, SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch);
+	SDL_SaveBMP(surface, "render.bmp");
+	SDL_FreeSurface(surface);
+}
+
 void
 quit(void)
 {
@@ -225,6 +236,9 @@ dokey(SDL_Event* event, Brush* b)
 	case SDLK_e:
 		save();
 		break;
+	case SDLK_r:
+		render();
+		break;
 	case SDLK_h:
 		GUIDES = !GUIDES;
 		redraw();