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# SPDX-License-Identifier: Apache-2.0
# Copyright 2018-2021 The glTF-Blender-IO authors.
import typing
import array
from io_scene_gltf2.io.com import gltf2_io_constants
class BinaryData:
"""Store for gltf binary data that can later be stored in a buffer."""
def __init__(self, data: bytes, bufferViewTarget=None):
if not isinstance(data, bytes):
raise TypeError("Data is not a bytes array")
self.data = data
self.bufferViewTarget = bufferViewTarget
def __eq__(self, other):
return self.data == other.data
def __hash__(self):
return hash(self.data)
@classmethod
def from_list(cls, lst: typing.List[typing.Any], gltf_component_type: gltf2_io_constants.ComponentType, bufferViewTarget=None):
format_char = gltf2_io_constants.ComponentType.to_type_code(gltf_component_type)
return BinaryData(array.array(format_char, lst).tobytes(), bufferViewTarget)
@property
def byte_length(self):
return len(self.data)
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