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from vtkmodules.vtkIOOpenVDB import vtkOpenVDBWriter
from vtkmodules.vtkImagingCore import vtkRTAnalyticSource
from vtkmodules.vtkParallelCore import vtkDummyController
import vtkmodules.test.Testing
from vtkmodules.util.misc import vtkGetTempDir
import sys
import os
dc = vtkDummyController()
dc.SetGlobalController(dc)
source = vtkRTAnalyticSource()
VTK_TEMP_DIR = vtkGetTempDir()
writer = vtkOpenVDBWriter()
writer.SetInputConnection(source.GetOutputPort())
fileName = VTK_TEMP_DIR+'/OpenVDBWriter.vdb'
if os.path.exists(fileName):
os.remove(fileName)
writer.SetFileName(fileName)
writer.Update()
if '--VDB_PRINT_EXE' in sys.argv:
print("checking the VDB output file")
vdb_print_index = sys.argv.index('--VDB_PRINT_EXE')+1
stream = os.popen(sys.argv[vdb_print_index]+' '+fileName)
# the output of the stream should look something like:
# RTData float (-10,-10,-10)->(10,10,10) 21x21x21 9.26KVox 2.33MB
# we don't compare the last bit since that could be system or compile dependent
data = stream.readline()
pieces = data.split()
if pieces[0] != 'RTData' or pieces[1] != 'float' or pieces[2] != '(-10,-10,-10)->(10,10,10)' or pieces[3] != '21x21x21':
print("failure: result should look like 'RTData float (-10,-10,-10)->(10,10,10) 21x21x21 9.26KVox 2.33MB' " +
" but is " + data)
sys.exit(1)
print("success")
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