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# SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
# SPDX-License-Identifier: BSD-3-Clause
import vtkmodules.vtkCommonCore
import math
# 'Char' is tested independently,
# it is the only case that fallback to 'str' python type
# while other are numeric ones, allowing for code factorization.
NUMERIC_TYPES = [
'Double',
'Float',
'Int',
'IdType',
'Long',
'Short',
'SignedChar',
'UnsignedChar',
'UnsignedInt',
'UnsignedLong',
'UnsignedShort']
# ------------------------------------------------------------------------------
# Get an instance of the corresponding class
def GetArray(backend, dataType):
vtkClass = 'vtk' + backend + dataType + 'Array'
return getattr(vtkmodules.vtkCommonCore, vtkClass)()
# ------------------------------------------------------------------------------
# Compare value with tolerance. Print error if different.
def CheckResult(val, expected):
if type(val) == str or type(expected) == str:
if val != expected:
print("ERROR: has {} instead of {}".format(val, expected))
return False
elif not math.isclose(val, expected):
print("ERROR: has {} instead of {}".format(val, expected))
return False
return True
# ------------------------------------------------------------------------------
def TestConstantArray(constArray, value):
constArray.SetNumberOfTuples(42)
constArray.ConstructBackend(value)
if not CheckResult(constArray.GetValue(1), value):
print("ERROR: {} failed.".format(type(constArray)))
# ------------------------------------------------------------------------------
def TestAffineArray(affineArray, slope, intercept):
affineArray.SetNumberOfTuples(42)
affineArray.ConstructBackend(slope, intercept)
if not CheckResult(affineArray.GetValue(1), slope + intercept):
print("ERROR: {} failed.".format(type(affineArray)))
# ------------------------------------------------------------------------------
# dedicated test needed to avoid issue with type conversion
def TestAffineCharArray(affineArray, slope, intercept):
affineArray.SetNumberOfTuples(42)
affineArray.ConstructBackend(slope, intercept)
if not CheckResult(affineArray.GetValue(1), chr(ord(slope) + ord(intercept))):
print("ERROR: {} failed.".format(type(affineArray)))
# ------------------------------------------------------------------------------
def TestIndexedArray(indexedArray, originalArray):
indexedArray.SetNumberOfTuples(4)
indexes = vtkmodules.vtkCommonCore.vtkIdTypeArray()
size = originalArray.GetNumberOfTuples()
indexes.InsertNextValue(0)
indexes.InsertNextValue(1)
indexes.InsertNextValue(size - 2)
indexes.InsertNextValue(size - 1)
indexedArray.ConstructBackend(indexes, originalArray)
if not CheckResult(indexedArray.GetValue(2), originalArray.GetValue(size - 2)):
print("ERROR: {} failed.".format(type(indexedArray)))
# ------------------------------------------------------------------------------
def TestCompositeArray(compositeArray, arrayList):
arrays = vtkmodules.vtkCommonCore.vtkDataArrayCollection()
firstsize = 13
first = arrayList[0]
for idx in range(firstsize):
first.InsertNextValue(idx)
arrays.AddItem(first)
second = arrayList[1]
secondsize = 14
for idx in range(firstsize):
first.InsertNextValue(firstsize + idx)
arrays.AddItem(second)
compositeArray.SetNumberOfTuples(firstsize + secondsize)
compositeArray.ConstructBackend(arrays)
if not CheckResult(compositeArray.GetValue(firstsize + 1), firstsize+1):
print("ERROR: {} failed.".format(type(constArray)))
# ------------------------------------------------------------------------------
def TestCompositeCharArray(compositeArray, arrayList):
arrays = vtkmodules.vtkCommonCore.vtkDataArrayCollection()
firstsize = 13
first = arrayList[0]
for idx in range(firstsize):
first.InsertNextValue(chr(idx))
arrays.AddItem(first)
second = arrayList[1]
secondsize = 14
for idx in range(firstsize):
first.InsertNextValue(chr(firstsize + idx))
arrays.AddItem(second)
compositeArray.SetNumberOfTuples(firstsize + secondsize)
compositeArray.ConstructBackend(arrays)
if not CheckResult(compositeArray.GetValue(firstsize + 1), chr(firstsize+1)):
print("ERROR: {} failed.".format(type(constArray)))
# ------------------------------------------------------------------------------
def InstantiateNumericTypes():
for dataType in NUMERIC_TYPES:
constantArray = GetArray("Constant", dataType)
TestConstantArray(constantArray, 13)
affineArray = GetArray("Affine", dataType)
TestAffineArray(affineArray, 1, 2)
indexedArray = GetArray("Indexed", dataType)
originalData = GetArray("", dataType)
for val in range(100):
originalData.InsertNextValue(val)
TestIndexedArray(indexedArray, originalData)
compositeArray = GetArray("Composite", dataType)
first = GetArray("", dataType)
second = GetArray("", dataType)
TestCompositeArray(compositeArray, [first, second])
# ------------------------------------------------------------------------------
def InstantiateChar():
dataType = 'Char'
constantArray = GetArray("Constant", dataType)
TestConstantArray(constantArray, 'a')
affineArray = GetArray("Affine", dataType)
TestAffineCharArray(affineArray, chr(1), 'b')
indexedArray = GetArray("Indexed", dataType)
originalData = GetArray("", dataType)
originalData.InsertNextValue('a')
originalData.InsertNextValue('b')
originalData.InsertNextValue('c')
originalData.InsertNextValue('d')
TestIndexedArray(indexedArray, originalData)
compositeArray = GetArray("Composite", dataType)
first = GetArray("", dataType)
second = GetArray("", dataType)
TestCompositeCharArray(compositeArray, [first, second])
InstantiateNumericTypes()
InstantiateChar()
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