/
parametricspline.py
89 lines (68 loc) · 2.49 KB
/
parametricspline.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
#!/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(0.1, 0.2, 0.4)
self.vtkWidget.GetRenderWindow().AddRenderer(self.ren)
self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
# Create three points.
origin = [0.0, 0.0, 0.0]
p0 = [1.0, 0.0, 0.0]
p1 = [0.0, 1.0, 0.0]
p2 = [0.0, 1.0, 2.0]
p3 = [1.0, 2.0, 3.0]
# Create a vtkPoints object and store the points in it.
points = vtk.vtkPoints()
points.InsertNextPoint(origin)
points.InsertNextPoint(p0)
points.InsertNextPoint(p1)
points.InsertNextPoint(p2)
points.InsertNextPoint(p3)
spline = vtk.vtkParametricSpline()
spline.SetPoints(points)
functionSource = vtk.vtkParametricFunctionSource()
functionSource.SetParametricFunction(spline)
functionSource.Update()
# Create a mapper
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(functionSource.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("Parametric Spline example")
def categories(self):
return ['Demo']
def mainClasses(self):
return ['vtkParametricSpline', 'vtkParametricFunctionSource', 'vtkPoints']
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
w = MainPage()
w.show()
sys.exit(app.exec_())