Line(): type(OTLine), id(Global::objectID++) {}
Line(Vector pt1, Vector pt2, float th = 1.0, uint32_t c = 0, int l = LSSolid):
type(OTLine), id(Global::objectID++), layer(0), color(c), thickness(th),
Line(): type(OTLine), id(Global::objectID++) {}
Line(Vector pt1, Vector pt2, float th = 1.0, uint32_t c = 0, int l = LSSolid):
type(OTLine), id(Global::objectID++), layer(0), color(c), thickness(th),