50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# -*- coding: utf-8 -*-
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## Add path to library (just for examples; you do not need this)
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import sys, os
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
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from pyqtgraph.Qt import QtCore, QtGui
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import pyqtgraph.opengl as gl
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import pyqtgraph as pg
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import numpy as np
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import scipy.ndimage as ndi
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app = QtGui.QApplication([])
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w = gl.GLViewWidget()
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w.opts['distance'] = 200
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w.show()
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## create volume data set to slice three images from
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shape = (100,100,70)
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data = ndi.gaussian_filter(np.random.normal(size=shape), (4,4,4))
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data += ndi.gaussian_filter(np.random.normal(size=shape), (15,15,15))*15
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## slice out three planes, convert to ARGB for OpenGL texture
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levels = (-0.08, 0.08)
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tex1 = pg.makeRGBA(data[shape[0]/2], levels=levels)[0] # yz plane
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tex2 = pg.makeRGBA(data[:,shape[1]/2], levels=levels)[0] # xz plane
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tex3 = pg.makeRGBA(data[:,:,shape[2]/2], levels=levels)[0] # xy plane
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## Create three image items from textures, add to view
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v1 = gl.GLImageItem(tex1)
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v1.translate(-shape[1]/2, -shape[2]/2, 0)
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v1.rotate(90, 0,0,1)
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v1.rotate(-90, 0,1,0)
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w.addItem(v1)
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v2 = gl.GLImageItem(tex2)
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v2.translate(-shape[0]/2, -shape[2]/2, 0)
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v2.rotate(-90, 1,0,0)
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w.addItem(v2)
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v3 = gl.GLImageItem(tex3)
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v3.translate(-shape[0]/2, -shape[1]/2, 0)
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w.addItem(v3)
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ax = gl.GLAxisItem()
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w.addItem(ax)
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## Start Qt event loop unless running in interactive mode.
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if __name__ == '__main__':
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import sys
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if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
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QtGui.QApplication.instance().exec_()
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