Python pyqtgraph:在GLSurfacePlotItem对象上设置smooth=False时出现问题

我目前正在尝试使用

pyqtgraph

在3D中绘制一个基本颜色编码的“切片”。当我用

smooth=True

初始化

GLSurfacePlotItem

对象时，一切正常。然而，当我简单地设置

smooth=False

时，就会出现大量错误和警告。不幸的是，文档并没有对这个设置进行太多的解释

下面是我的示例代码。我错过了什么

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys
import numpy as np
import matplotlib
import matplotlib.pyplot as plt

from pyqtgraph.Qt import QtCore, QtGui
import pyqtgraph.opengl as gl
import pyqtgraph as pg

x, y, z = 30, 20, 10
data = np.random.rand(x,y,z)

cmap = matplotlib.cm.get_cmap('jet')
norm = matplotlib.colors.PowerNorm(vmin=0.0, vmax=1.0, gamma=2.5)
m = matplotlib.cm.ScalarMappable(norm=norm, cmap=cmap)

colors = np.zeros((x,y,z,4), dtype=np.float16)
for i in range(x):
    colors[i,:,:,:] = m.to_rgba(data[i,:,:])

app = QtGui.QApplication(sys.argv)
w = gl.GLViewWidget()

zslice = gl.GLSurfacePlotItem(x=np.arange(0,x,1), y=np.arange(0,y,1), z=np.ones((x,y))*0.5, colors=colors[:,:,0,:], smooth=True, computeNormals=False)

w.addItem(zslice)
w.setGeometry(100, 10, 1280, 720)
w.show()

if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
    QtGui.QApplication.instance().exec_()

设置

smooth=False时收到的错误消息：

[13:16:04]

    |==============================>>
    |  Traceback (most recent call last):
    |    File "./test5.py", line 34, in <module>
    |      QtGui.QApplication.instance().exec_()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 179, in paintGL
    |      self.drawItemTree(useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 219, in drawItemTree
    |      self.drawItemTree(i, useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 200, in drawItemTree
    |      debug.printExc()
    |    --- exception caught here ---
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 197, in drawItemTree
    |      i.paint()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 167, in paint
    |      self.parseMeshData()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 151, in parseMeshData
    |      self.colors = md.vertexColors(indexed='faces')
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/MeshData.py", line 239, in vertexColors
    |      self._vertexColorsIndexedByFaces = self._vertexColors[self.faces()]
    |  IndexError: index 30 is out of bounds for axis 0 with size 30
    |==============================<<
Error while drawing item <pyqtgraph.opengl.items.GLSurfacePlotItem.GLSurfacePlotItem object at 0x7f9f0cf21410>.
[13:16:04]

    |==============================>>
    |  Traceback (most recent call last):
    |    File "./test5.py", line 34, in <module>
    |      QtGui.QApplication.instance().exec_()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 179, in paintGL
    |      self.drawItemTree(useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 219, in drawItemTree
    |      self.drawItemTree(i, useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 200, in drawItemTree
    |      debug.printExc()
    |    --- exception caught here ---
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 197, in drawItemTree
    |      i.paint()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 167, in paint
    |      self.parseMeshData()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 151, in parseMeshData
    |      self.colors = md.vertexColors(indexed='faces')
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/MeshData.py", line 239, in vertexColors
    |      self._vertexColorsIndexedByFaces = self._vertexColors[self.faces()]
    |  IndexError: index 30 is out of bounds for axis 0 with size 30
    |==============================<<
Error while drawing item <pyqtgraph.opengl.items.GLSurfacePlotItem.GLSurfacePlotItem object at 0x7f9f0cf21410>.
[13:16:04]

    |==============================>>
    |  Traceback (most recent call last):
    |    File "./test5.py", line 34, in <module>
    |      QtGui.QApplication.instance().exec_()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 179, in paintGL
    |      self.drawItemTree(useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 219, in drawItemTree
    |      self.drawItemTree(i, useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 200, in drawItemTree
    |      debug.printExc()
    |    --- exception caught here ---
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 197, in drawItemTree
    |      i.paint()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 167, in paint
    |      self.parseMeshData()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 151, in parseMeshData
    |      self.colors = md.vertexColors(indexed='faces')
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/MeshData.py", line 239, in vertexColors
    |      self._vertexColorsIndexedByFaces = self._vertexColors[self.faces()]
    |  IndexError: index 30 is out of bounds for axis 0 with size 30
    |==============================<<
Error while drawing item <pyqtgraph.opengl.items.GLSurfacePlotItem.GLSurfacePlotItem object at 0x7f9f0cf21410>.
[13:16:06]

    |==============================>>
    |  Traceback (most recent call last):
    |    File "./test5.py", line 34, in <module>
    |      QtGui.QApplication.instance().exec_()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 179, in paintGL
    |      self.drawItemTree(useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 219, in drawItemTree
    |      self.drawItemTree(i, useItemNames=useItemNames)
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 200, in drawItemTree
    |      debug.printExc()
    |    --- exception caught here ---
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/GLViewWidget.py", line 197, in drawItemTree
    |      i.paint()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 167, in paint
    |      self.parseMeshData()
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/items/GLMeshItem.py", line 151, in parseMeshData
    |      self.colors = md.vertexColors(indexed='faces')
    |    File "/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgraph/opengl/MeshData.py", line 239, in vertexColors
    |      self._vertexColorsIndexedByFaces = self._vertexColors[self.faces()]
    |  IndexError: index 30 is out of bounds for axis 0 with size 30
    |==============================<<
Error while drawing item <pyqtgraph.opengl.items.GLSurfacePlotItem.GLSurfacePlotItem object at 0x7f9f0cf21410>.

[13:16:04]
|==============================>>
|回溯（最近一次呼叫最后一次）：
|文件“/test5.py”，第34行，在
|QtGui.QApplication.instance（）
|paintGL中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第179行
|self.drawItemTree（useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第219行
|self.drawItemTree（i，useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第200行
|debug.printExc（）
|---这里有个例外---
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第197行，位于drawItemTree中
|一、油漆（）
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/items/GLMeshItem.py”，第167行，绘制
|self.parseMeshData（）
|parseMeshData中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/items/glmeshim.py”，第151行
|self.colors=md.vertexColors（index='faces'）
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/MeshData.py”，第239行，以VertexColor表示
|self.\u vertexColorsIndexedByFaces=self.\u vertexColors[self.faces（）]
|索引器：索引30超出大小为30的轴0的界限
|==============================>
|回溯（最近一次呼叫最后一次）：
|文件“/test5.py”，第34行，在
|QtGui.QApplication.instance（）
|paintGL中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第179行
|self.drawItemTree（useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第219行
|self.drawItemTree（i，useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第200行
|debug.printExc（）
|---这里有个例外---
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第197行，位于drawItemTree中
|一、油漆（）
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/items/GLMeshItem.py”，第167行，绘制
|self.parseMeshData（）
|parseMeshData中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/items/glmeshim.py”，第151行
|self.colors=md.vertexColors（index='faces'）
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/MeshData.py”，第239行，以VertexColor表示
|self.\u vertexColorsIndexedByFaces=self.\u vertexColors[self.faces（）]
|索引器：索引30超出大小为30的轴0的界限
|==============================>
|回溯（最近一次呼叫最后一次）：
|文件“/test5.py”，第34行，在
|QtGui.QApplication.instance（）
|paintGL中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第179行
|self.drawItemTree（useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第219行
|self.drawItemTree（i，useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第200行
|debug.printExc（）
|---这里有个例外---
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第197行，位于drawItemTree中
|一、油漆（）
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/items/GLMeshItem.py”，第167行，绘制
|self.parseMeshData（）
|parseMeshData中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/items/glmeshim.py”，第151行
|self.colors=md.vertexColors（index='faces'）
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/MeshData.py”，第239行，以VertexColor表示
|self.\u vertexColorsIndexedByFaces=self.\u vertexColors[self.faces（）]
|索引器：索引30超出大小为30的轴0的界限
|==============================>
|回溯（最近一次呼叫最后一次）：
|文件“/test5.py”，第34行，在
|QtGui.QApplication.instance（）
|paintGL中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第179行
|self.drawItemTree（useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第219行
|self.drawItemTree（i，useItemNames=useItemNames）
|drawItemTree中的文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第200行
|debug.printExc（）
|---这里有个例外---
|文件“/home/steve/anaconda3/lib/python3.7/site packages/pyqtgraph/opengl/GLViewWidget.py”，第197行，位于drawItemTree中
|一、油漆（）
|文件“/home/steve/anaconda3/lib/python3.7/site-packages/pyqtgra