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import hashlib, base64
arrayTypesMapping = [
" ", # VTK_VOID 0
" ", # VTK_BIT 1
"b", # VTK_CHAR 2
"B", # VTK_UNSIGNED_CHAR 3
"h", # VTK_SHORT 4
"H", # VTK_UNSIGNED_SHORT 5
"i", # VTK_INT 6
"I", # VTK_UNSIGNED_INT 7
"l", # VTK_LONG 8
"L", # VTK_UNSIGNED_LONG 9
"f", # VTK_FLOAT 10
"d", # VTK_DOUBLE 11
"L", # VTK_ID_TYPE 12
" ", # unspecified 13
" ", # unspecified 14
"b", # signed_char 15
]
javascriptMapping = {
"b": "Int8Array",
"B": "Uint8Array",
"h": "Int16Array",
"H": "Int16Array",
"i": "Int32Array",
"I": "Uint32Array",
"l": "Int32Array",
"L": "Uint32Array",
"f": "Float32Array",
"d": "Float64Array",
}
def iteritems(d, **kwargs):
return iter(d.items(**kwargs))
def base64Encode(x):
return base64.b64encode(x).decode("utf-8")
def hashDataArray(dataArray):
hashedBit = hashlib.md5(memoryview(dataArray)).hexdigest()
typeCode = arrayTypesMapping[dataArray.GetDataType()]
return "%s_%d%s" % (hashedBit, dataArray.GetSize(), typeCode)
def getJSArrayType(dataArray):
return javascriptMapping[arrayTypesMapping[dataArray.GetDataType()]]
def getReferenceId(ref):
if ref:
try:
return ref.__this__[1:17]
except:
idStr = str(ref)[-12:-1]
# print('====> fallback ID %s for %s' % (idStr, ref))
return idStr
return "0x0"
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