change examples to use setCameraPosition

examples/GLBarGraphItem.py

@@ -13,9 +13,9 @@ import numpy as np
 
 app = pg.mkQApp("GLBarGraphItem Example")
 w = gl.GLViewWidget()
-w.opts['distance'] = 40
 w.show()
 w.setWindowTitle('pyqtgraph example: GLBarGraphItem')
+w.setCameraPosition(distance=40)
 
 gx = gl.GLGridItem()
 gx.rotate(90, 0, 1, 0)

examples/GLImageItem.py

@@ -15,9 +15,9 @@ import numpy as np
 
 app = pg.mkQApp("GLImageItem Example")
 w = gl.GLViewWidget()
-w.opts['distance'] = 200
 w.show()
 w.setWindowTitle('pyqtgraph example: GLImageItem')
+w.setCameraPosition(distance=200)
 
 ## create volume data set to slice three images from
 shape = (100,100,70)

examples/GLLinePlotItem.py

@@ -13,9 +13,9 @@ import numpy as np
 
 app = pg.mkQApp("GLLinePlotItem Example")
 w = gl.GLViewWidget()
-w.opts['distance'] = 40
 w.show()
 w.setWindowTitle('pyqtgraph example: GLLinePlotItem')
+w.setCameraPosition(distance=40)
 
 gx = gl.GLGridItem()
 gx.rotate(90, 0, 1, 0)

examples/GLScatterPlotItem.py

@@ -15,9 +15,9 @@ import numpy as np
 
 app = pg.mkQApp("GLScatterPlotItem Example")
 w = gl.GLViewWidget()
-w.opts['distance'] = 20
 w.show()
 w.setWindowTitle('pyqtgraph example: GLScatterPlotItem')
+w.setCameraPosition(distance=20)
 
 g = gl.GLGridItem()
 w.addItem(g)

examples/GLViewWidget.py

@@ -11,9 +11,9 @@ import pyqtgraph.opengl as gl
 
 pg.mkQApp("GLViewWidget Example")
 w = gl.GLViewWidget()
-w.opts['distance'] = 20
 w.show()
 w.setWindowTitle('pyqtgraph example: GLViewWidget')
+w.setCameraPosition(distance=20)
 
 ax = gl.GLAxisItem()
 ax.setSize(5,5,5)

examples/GLVolumeItem.py

@@ -14,9 +14,9 @@ from pyqtgraph import functions as fn
 
 app = pg.mkQApp("GLVolumeItem Example")
 w = gl.GLViewWidget()
-w.opts['distance'] = 200
 w.show()
 w.setWindowTitle('pyqtgraph example: GLVolumeItem')
+w.setCameraPosition(distance=200)
 
 g = gl.GLGridItem()
 g.scale(10, 10, 1)