def __init__(self, model_part, parent=None):
"""
Parent should be either a SliceRootItem, or an AssemblyItem.
Invariant: keys in _empty_helix_hash = range(_nrows) x range(_ncols)
where x is the cartesian product.
Order matters for deselector, probe, and setlattice
"""
super(PartItem, self).__init__(parent)
self._part = model_part
self._controller = PartItemController(self, model_part)
self._active_slice_item = ActiveSliceItem(self,
model_part.activeBaseIndex())
self._scaleFactor = self._RADIUS / model_part.radius()
self._empty_helix_hash = {}
self._virtual_helix_hash = {}
self._nrows, self._ncols = 0, 0
self._rect = QRectF(0, 0, 0, 0)
self._initDeselector()
# Cache of VHs that were active as of last call to activeSliceChanged
# If None, all slices will be redrawn and the cache will be filled.
# Connect destructor. This is for removing a part from scenes.
self.probe = self.IntersectionProbe(self)
# initialize the PartItem with an empty set of old coords
self._setLattice([], model_part.generatorFullLattice())
self.setFlag(QGraphicsItem.ItemHasNoContents) # never call paint
self.setZValue(styles.ZPARTITEM)
self._initModifierCircle()
def __init__(self, model_part, viewroot, active_tool_getter, parent):
"""parent should always be pathrootitem"""
super(PartItem, self).__init__(parent)
self._model_part = m_p = model_part
self._viewroot = viewroot
self._getActiveTool = active_tool_getter
self._activeSliceItem = ActiveSliceItem(self, m_p.activeBaseIndex())
self._active_virtual_helix_item = None
self._controller = PartItemController(self, m_p)
self._pre_xover_items = [] # crossover-related
self._virtual_helix_hash = {}
self._virtual_helix_item_list = []
self._vh_rect = QRectF()
self.setAcceptHoverEvents(True)
self._initModifierRect()
self._initResizeButtons()
self._proxy_parent = ProxyParentItem(self)
self._proxy_parent.setFlag(QGraphicsItem.ItemHasNoContents)
