104 lines
2.8 KiB
Python
104 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Demonstration of some of the shader programs included with pyqtgraph that can be
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used to affect the appearance 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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import numpy as np
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from pyqtgraph.Qt import QtCore, QtGui
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import pyqtgraph as pg
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import pyqtgraph.opengl as gl
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app = pg.mkQApp("GLShaders Example")
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w = gl.GLViewWidget()
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w.show()
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w.setWindowTitle('pyqtgraph example: GL Shaders')
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w.setCameraPosition(distance=15, azimuth=-90)
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g = gl.GLGridItem()
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g.scale(2,2,1)
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w.addItem(g)
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md = gl.MeshData.sphere(rows=10, cols=20)
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x = np.linspace(-8, 8, 6)
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m1 = gl.GLMeshItem(meshdata=md, smooth=True, color=(1, 0, 0, 0.2), shader='balloon', glOptions='additive')
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m1.translate(x[0], 0, 0)
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m1.scale(1, 1, 2)
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w.addItem(m1)
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m2 = gl.GLMeshItem(meshdata=md, smooth=True, shader='normalColor', glOptions='opaque')
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m2.translate(x[1], 0, 0)
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m2.scale(1, 1, 2)
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w.addItem(m2)
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m3 = gl.GLMeshItem(meshdata=md, smooth=True, shader='viewNormalColor', glOptions='opaque')
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m3.translate(x[2], 0, 0)
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m3.scale(1, 1, 2)
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w.addItem(m3)
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m4 = gl.GLMeshItem(meshdata=md, smooth=True, shader='shaded', glOptions='opaque')
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m4.translate(x[3], 0, 0)
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m4.scale(1, 1, 2)
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w.addItem(m4)
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m5 = gl.GLMeshItem(meshdata=md, smooth=True, color=(1, 0, 0, 1), shader='edgeHilight', glOptions='opaque')
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m5.translate(x[4], 0, 0)
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m5.scale(1, 1, 2)
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w.addItem(m5)
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m6 = gl.GLMeshItem(meshdata=md, smooth=True, color=(1, 0, 0, 1), shader='heightColor', glOptions='opaque')
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m6.translate(x[5], 0, 0)
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m6.scale(1, 1, 2)
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w.addItem(m6)
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#def psi(i, j, k, offset=(25, 25, 50)):
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#x = i-offset[0]
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#y = j-offset[1]
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#z = k-offset[2]
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#th = np.arctan2(z, (x**2+y**2)**0.5)
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#phi = np.arctan2(y, x)
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#r = (x**2 + y**2 + z **2)**0.5
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#a0 = 1
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##ps = (1./81.) * (2./np.pi)**0.5 * (1./a0)**(3/2) * (6 - r/a0) * (r/a0) * np.exp(-r/(3*a0)) * np.cos(th)
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#ps = (1./81.) * 1./(6.*np.pi)**0.5 * (1./a0)**(3/2) * (r/a0)**2 * np.exp(-r/(3*a0)) * (3 * np.cos(th)**2 - 1)
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#return ps
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##return ((1./81.) * (1./np.pi)**0.5 * (1./a0)**(3/2) * (r/a0)**2 * (r/a0) * np.exp(-r/(3*a0)) * np.sin(th) * np.cos(th) * np.exp(2 * 1j * phi))**2
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#print("Generating scalar field..")
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#data = np.abs(np.fromfunction(psi, (50,50,100)))
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##data = np.fromfunction(lambda i,j,k: np.sin(0.2*((i-25)**2+(j-15)**2+k**2)**0.5), (50,50,50));
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#print("Generating isosurface..")
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#verts = pg.isosurface(data, data.max()/4.)
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#md = gl.MeshData.MeshData(vertexes=verts)
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#colors = np.ones((md.vertexes(indexed='faces').shape[0], 4), dtype=float)
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#colors[:,3] = 0.3
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#colors[:,2] = np.linspace(0, 1, colors.shape[0])
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#m1 = gl.GLMeshItem(meshdata=md, color=colors, smooth=False)
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#w.addItem(m1)
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#m1.translate(-25, -25, -20)
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#m2 = gl.GLMeshItem(vertexes=verts, color=colors, smooth=True)
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#w.addItem(m2)
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#m2.translate(-25, -25, -50)
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if __name__ == '__main__':
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pg.exec()
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