Add camera controls

src/rasteriser/main.c

@@ -120,6 +120,17 @@ int main(void) {
       case SDL_QUIT:
         running = false;
         break;
+      case SDL_KEYDOWN:
+        if (event.key.keysym.sym == SDLK_w) {
+          camera.rotation.x += 1.0f;
+        } else if (event.key.keysym.sym == SDLK_s) {
+          camera.rotation.x -= 1.0f;
+        } else if (event.key.keysym.sym == SDLK_d) {
+          camera.rotation.y += 1.0f;
+        } else if (event.key.keysym.sym == SDLK_a) {
+          camera.rotation.y -= 1.0f;
+        }
+        break;
       }
     }