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colorglyphs.py
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colorglyphs.py
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#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import sys
import os.path
from PyQt4 import QtCore, QtGui
QtCore.Signal = QtCore.pyqtSignal
import vtk
from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
class VTKFrame(QtGui.QFrame):
def __init__(self, parent = None):
super(VTKFrame, self).__init__(parent)
self.vtkWidget = QVTKRenderWindowInteractor(self)
vl = QtGui.QVBoxLayout(self)
vl.addWidget(self.vtkWidget)
vl.setContentsMargins(0, 0, 0, 0)
self.ren = vtk.vtkRenderer()
self.ren.SetBackground(1, 1, 1)
self.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
# Create points
points = vtk.vtkPoints()
points.InsertNextPoint(0, 0, 0)
points.InsertNextPoint(5, 0, 0)
points.InsertNextPoint(10, 0, 0)
# Setup scales. This can also be an Int array
# char is used since it takes the least memory
colors = vtk.vtkUnsignedCharArray()
colors.SetName("colors")
colors.SetNumberOfComponents(3)
colors.InsertNextTupleValue((255, 0, 0))
colors.InsertNextTupleValue((0, 255, 0))
colors.InsertNextTupleValue((0, 0, 255))
# Combine into a polydata
polyData = vtk.vtkPolyData()
polyData.SetPoints(points)
polyData.GetPointData().SetScalars(colors)
# Create anything you want here, we will use a cube for the demo.
cubeSource = vtk.vtkCubeSource()
glyph3D = vtk.vtkGlyph3D()
glyph3D.SetColorModeToColorByScalar()
glyph3D.SetSourceConnection(cubeSource.GetOutputPort())
glyph3D.SetInput(polyData)
glyph3D.ScalingOff() #Needed, otherwise only the red cube is visible
glyph3D.Update()
# Create a mapper
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(glyph3D.GetOutputPort())
# Create an actor
actor = vtk.vtkActor()
actor.SetMapper(mapper)
self.ren.AddActor(actor)
self.ren.ResetCamera()
self._initialized = False
def showEvent(self, evt):
if not self._initialized:
self.iren.Initialize()
self.startTimer(30)
self._initialized = True
def timerEvent(self, evt):
self.ren.GetActiveCamera().Azimuth(1)
self.vtkWidget.GetRenderWindow().Render()
class MainPage(QtGui.QMainWindow):
def __init__(self, parent = None):
super(MainPage, self).__init__(parent)
self.setCentralWidget(VTKFrame())
self.setWindowTitle("Color Glyphs Example")
def categories(self):
return ['glyph3d']
def mainClasses(self):
return ['vtkGlyph3D', 'vtkPoints']
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
w = MainPage()
w.show()
sys.exit(app.exec_())