private void RemoveLine(
GameLine line,
LineRenderer renderer,
Dictionary <int, int> lookup)
{
int start = lookup[line.ID];
renderer.RemoveLine(start);
// preserve the id in the lookup in event of undo
}
public void RemoveLine(StandardLine line)
{
var colorindex = _lines[line.ID];
_linebuffer.RemoveLine(colorindex);
}