static void DrawImageHandler([NotNull] Player player, [NotNull] CommandReader cmd) {
ImageDrawOperation op = new ImageDrawOperation(player);
if (!op.ReadParams(cmd)) {
CdDrawImage.PrintUsage(player);
return;
}
player.Message("DrawImage: Click 2 blocks or use &H/Mark&S to set direction.");
player.SelectionStart(2, DrawImageCallback, op, Permission.DrawAdvanced);
}