Commit 55e58ac6 authored by Luke Campagnola's avatar Luke Campagnola
Browse files

updated arrow example

parent de5d388a
......@@ -15,17 +15,35 @@ import pyqtgraph as pg
app = QtGui.QApplication([])
mw = QtGui.QMainWindow()
mw.resize(300,300)
p = pg.PlotWidget()
mw.setCentralWidget(p)
c = p.plot(x=np.sin(np.linspace(0, 2*np.pi, 1000)), y=np.cos(np.linspace(0, 6*np.pi, 1000)))
w = QtGui.QMainWindow()
cw = pg.GraphicsLayoutWidget()
w.show()
w.resize(400,600)
w.setCentralWidget(cw)
p = cw.addPlot(row=0, col=0)
p2 = cw.addPlot(row=1, col=0)
## variety of arrow shapes
a1 = pg.ArrowItem(angle=-160, tipAngle=60, headLen=40, tailLen=40, tailWidth=20, pen={'color': 'w', 'width': 3})
a2 = pg.ArrowItem(angle=-120, tipAngle=30, baseAngle=20, headLen=40, tailLen=40, tailWidth=8, pen=None, brush='y')
a3 = pg.ArrowItem(angle=-60, tipAngle=30, baseAngle=20, headLen=40, tailLen=None, brush=None)
a4 = pg.ArrowItem(angle=-20, tipAngle=30, baseAngle=-30, headLen=40, tailLen=None)
a2.setPos(10,0)
a3.setPos(20,0)
a4.setPos(30,0)
p.addItem(a1)
p.addItem(a2)
p.addItem(a3)
p.addItem(a4)
p.setRange(QtCore.QRectF(-20, -10, 60, 20))
## Animated arrow following curve
c = p2.plot(x=np.sin(np.linspace(0, 2*np.pi, 1000)), y=np.cos(np.linspace(0, 6*np.pi, 1000)))
a = pg.CurveArrow(c)
p.addItem(a)
mw.show()
p2.addItem(a)
anim = a.makeAnimation(loop=-1)
anim.start()
......
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