/// <summary>
/// given world pos 'pt', find out the dist to given edge
/// </summary>
public static float DistPointToVEdge(Vector3 pt, VEdge vEdge)
{
Vector3 pos0 = vEdge.GetVVert(0).GetWorldPos();
Vector3 pos1 = vEdge.GetVVert(1).GetWorldPos();
return(GeoUtil.DistPointToLine(pt, pos0, pos1));
}