44 lines
1003 B
Python
44 lines
1003 B
Python
# -*- coding: utf-8 -*-
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"""
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Demonstrate use of GLLinePlotItem to draw cross-sections of a surface.
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"""
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## Add path to library (just for examples; you do not need this)
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import initExample
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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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app = pg.mkQApp("GLBarGraphItem Example")
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w = gl.GLViewWidget()
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w.show()
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w.setWindowTitle('pyqtgraph example: GLBarGraphItem')
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w.setCameraPosition(distance=40)
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gx = gl.GLGridItem()
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gx.rotate(90, 0, 1, 0)
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gx.translate(-10, 0, 10)
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w.addItem(gx)
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gy = gl.GLGridItem()
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gy.rotate(90, 1, 0, 0)
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gy.translate(0, -10, 10)
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w.addItem(gy)
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gz = gl.GLGridItem()
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gz.translate(0, 0, 0)
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w.addItem(gz)
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# regular grid of starting positions
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pos = np.mgrid[0:10, 0:10, 0:1].reshape(3,10,10).transpose(1,2,0)
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# fixed widths, random heights
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size = np.empty((10,10,3))
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size[...,0:2] = 0.4
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size[...,2] = np.random.normal(size=(10,10))
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bg = gl.GLBarGraphItem(pos, size)
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w.addItem(bg)
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if __name__ == '__main__':
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pg.exec()
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