def updateLocation(self, pathHelix, scenePos, *args):
AbstractPathTool.updateLocation(self, pathHelix, scenePos, *args)
if pathHelix == None:
return
posItem = pathHelix.mapFromScene(scenePos)
strandType, baseIdx = self.baseAtPoint(pathHelix, posItem)
vh = pathHelix.vhelix()
if strandType == StrandType.Scaffold:
oppositeStrand = StrandType.Staple
else:
oppositeStrand = StrandType.Scaffold
if vh.hasLoopOrSkipAt(strandType, baseIdx) > 0:
loopBases = vh.hasLoopOrSkipAt(strandType, baseIdx)
compLoopBases = vh.hasLoopOrSkipAt(oppositeStrand, baseIdx)
if loopBases != compLoopBases and strandType == StrandType.Staple:
newLoc = pathHelix.baseLocation(strandType, baseIdx)
if self.pos() != newLoc:
self.setPos(*newLoc)
if not self.isVisible():
self.show()
return
if vh.hasEmptyAt(strandType, baseIdx):
if self.isVisible():
self.hide()
return
fivePBase = pathHelix.vhelix().fivePEndOfSegmentThrough(StrandType.Scaffold, baseIdx)
if fivePBase == None:
self.hide()
else:
vh, strandType, idx = fivePBase
phg = pathHelix.pathHelixGroup()
ph2 = phg.pathHelixForVHelix(vh)
fivePBaseLoc = QPointF(*ph2.baseLocation(strandType, idx))
fivePBaseLocSelfCoords = pathHelix.mapFromItem(ph2, fivePBaseLoc)
self.setPos(fivePBaseLocSelfCoords)
if not self.isVisible():
self.show()
