def __init__(self, modelPart, parent=None):
"""
Parent should be either a SliceRootItem, or an AssemblyItem.
Invariant: keys in _emptyhelixhash = 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 = modelPart
self._controller = PartItemController(self, modelPart)
self._activeSliceItem = ActiveSliceItem(self,
modelPart.activeBaseIndex())
self._scaleFactor = self._radius / modelPart.radius()
self._emptyhelixhash = {}
self._virtualHelixHash = {}
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([], modelPart.generatorFullLattice())
self.setFlag(QGraphicsItem.ItemHasNoContents) # never call paint
self.setZValue(styles.ZPARTITEM)
self._initModifierCircle()
def __init__(self, modelPart, viewroot, activeTool, parent):
"""parent should always be pathrootitem"""
super(PartItem, self).__init__(parent)
self._modelPart = mP = modelPart
self._viewroot = viewroot
self._activeTool = activeTool
self._activeSliceItem = ActiveSliceItem(self, mP.activeBaseIndex())
self._activeVirtualHelixItem = None
self._controller = PartItemController(self, mP)
self._preXoverItems = [] # crossover-related
self._virtualHelixHash = {}
self._virtualHelixItemList = []
self._vHRect = QRectF()
self.setAcceptHoverEvents(True)
self._initModifierRect()
self._initResizeButtons()
self._proxyParent = ProxyParentItem(self)
self._proxyParent.setFlag(QGraphicsItem.ItemHasNoContents)
