Exemplo n.º 1
0
static void motion(int x, int y)
{
	float dx, dy;

	dx = (float) (x - last_x) / width;
	dy = (float) (y - last_y) / height;

	if (cur_op == ROTATING) {
		y_rot -= dx * 360.0f;
		x_rot -= dy * 360.0f;
	} else if (cur_op == PANNING) {
		float lx, ly;
		vector x, y, z;

		ly = 2.0f * focal_len * tanf(radians(fovy / 2.0f));
		lx = ly * width / height;

		get_camera_frame(x, y, z);
		vec_mad(center, -dx * lx, x);
		vec_mad(center,  dy * ly, y);
	} else if (cur_op == ZOOMING) {
		focal_len *= (1.0f - dy) - dx;
	}

	last_x = x;
	last_y = y;
}
Exemplo n.º 2
0
static void get_camera(vector eye, vector at, vector up)
{
	vector x, y, z;

	get_camera_frame(x, y, z);
	vec_copy(at, center);
	vec_copy(eye, center);
	vec_mad(eye, focal_len, z);
	vec_copy(up, y);
}
Exemplo n.º 3
0
int main()
{
	camera_open();
	camera_update();
	graphics_open(get_camera_width(), get_camera_height());
	
	while(!get_key_state('Q'))
	{
		camera_update();
		graphics_blit_enc(get_camera_frame(), BGR, 0, 0, get_camera_width(), get_camera_height());
		graphics_circle_fill(get_camera_width() / 2, get_camera_height() / 2, get_camera_height() / 20, 255, 0, 0);
		graphics_update();
	}
	
	camera_close();
	graphics_close();
	
	return 0;
}