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#!/usr/bin/env python
"""Test template support in VTK-Python
VTK-python decides which template specializations
to wrap according to which ones are used in typedefs
and which ones appear as superclasses of other classes.
In addition, the wrappers are hard-coded to wrap the
vtkDenseArray and vtkSparseArray classes over a broad
range of types.
Created on May 29, 2011 by David Gobbi
"""
import sys
try:
# for Python2
import exceptions
except ImportError:
# In Python 3 standard exceptions were moved to builtin module.
pass
import vtk
from vtk.test import Testing
arrayTypes = ['char', 'int8', 'uint8', 'int16', 'uint16',
'int32', 'uint32', int, 'uint', 'int64', 'uint64',
'float32', float, str, 'unicode', vtk.vtkVariant]
arrayCodes = ['c', 'b', 'B', 'h', 'H',
'i', 'I', 'l', 'L', 'q', 'Q',
'f', 'd']
# create a unicode string for python 2 and python 3
if sys.hexversion >= 0x03000000:
francois = 'Fran\xe7ois'
else:
francois = unicode('Fran\xe7ois', 'latin1')
class TestTemplates(Testing.vtkTest):
def testDenseArray(self):
"""Test vtkDenseArray template"""
for t in (arrayTypes + arrayCodes):
a = vtk.vtkDenseArray[t]()
a.Resize(1)
i = vtk.vtkArrayCoordinates(0)
if t in ['bool', '?']:
value = 1
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['float32', 'float64', 'float', 'f', 'd']:
value = 3.125
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['char', 'c']:
value = 'c'
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in [str, 'str']:
value = "hello"
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['unicode']:
value = francois
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['vtkVariant', vtk.vtkVariant]:
value = vtk.vtkVariant("world")
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
else:
value = 12
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
def testSparseArray(self):
"""Test vtkSparseArray template"""
for t in (arrayTypes + arrayCodes):
a = vtk.vtkSparseArray[t]()
a.Resize(1)
i = vtk.vtkArrayCoordinates(0)
if t in ['bool', '?']:
value = 0
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['float32', 'float64', 'float', 'f', 'd']:
value = 3.125
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['char', 'c']:
value = 'c'
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in [str, 'str']:
value = "hello"
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['unicode']:
value = francois
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
elif t in ['vtkVariant', vtk.vtkVariant]:
value = vtk.vtkVariant("world")
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
else:
value = 12
a.SetValue(i, value)
result = a.GetValue(i)
self.assertEqual(value, result)
def testArray(self):
"""Test array CreateArray"""
o = vtk.vtkArray.CreateArray(vtk.vtkArray.DENSE, vtk.VTK_DOUBLE)
self.assertEqual(o.__class__, vtk.vtkDenseArray[float])
def testVector(self):
"""Test vector templates"""
# make sure Rect inherits operators
r = vtk.vtkRectf(0, 0, 2, 2)
self.assertEqual(r[2], 2.0)
c = vtk.vtkColor4ub(0, 0, 0)
self.assertEqual(list(c), [0, 0, 0, 255])
e = vtk.vtkVector['float32', 3]([0.0, 1.0, 2.0])
self.assertEqual(list(e), [0.0, 1.0, 2.0])
i = vtk.vtkVector3['i'](0)
self.assertEqual(list(i), [0, 0, 0])
if __name__ == "__main__":
Testing.main([(TestTemplates, 'test')])
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