class PendulumGraphics(Pendulum):
"""pendulum which renders itself in a QGraphicsView"""
def initGraphics(self, gView):
self.gView = gView
self.gScene = QGraphicsScene(self.gView)
self.gView.setScene(self.gScene)
self.gText = QGraphicsTextItem("Pendulum")
self.gText.moveBy(0, -120)
self.gGrid = Graphics.Items.Grid(size=(-140, -140, 140, 140), xstep=20, ystep=20,
toolTip='the main grid')
self.gCross = Graphics.Items.CrossX(toolTip='this is the fix point of the pendulum')
self.gAxes = Graphics.Items.Axes(toolTip='theese are x,y-axes')
self.gPendulum = GPendulum()
self.gPendulum.setProperties((self.mass, self.length, self.radius, self.gravity,
self.omega, self.friction))
self.gScene.addItem(self.gGrid)
self.gScene.addItem(self.gText)
self.gScene.addItem(self.gCross)
self.gScene.addItem(self.gAxes)
self.gScene.addItem(self.gPendulum)
self.gView.setSceneRect(QRectF(-140, -140, 280, 280))
self.gPendulum.rotate(self.phi.v)
def reset(self):
self.gPendulum.rotate(self.initValues['phi']-self.phi.v)
Pendulum.reset(self)
def update(self, timeStep):
Pendulum.update(self, timeStep)
self.gPendulum.rotate(self.phiStep)
