Module util

Utilities/functions that are useful across all specifications

Structs

Command

A command container. Decoding of a comand and length

CustomOrdWrapper

Wrapper struct for custom ordering

Traits

BBoxQuantization

CustomOrd

Manager for float based comparisons

Functions

command_decode

Decode a command with the given length of the data that follows.

command_encode

Encode a command with the given length of the data that follows.

delta_decode_array

Decode an array that was encoded using delta encoding.

delta_decode_sorted_array

Decode a sorted array that was encoded using delta encoding.

delta_encode_array

Encode an array using delta encoding.

delta_encode_sorted_array

Encode a sorted array using delta encoding.

dequantize_lat

Converts quantized latitude back to geographical latitude

dequantize_lon

Converts quantized longitude back to geographical longitude

pack24_bit_uint

Packs a 24-bit integer into a buffer at the specified offset.

pack_float

Packs a float into a buffer at the specified offset using little-endian format.

quantize_lat

24-bit quantization ~0.000010728836059570312 degrees precision ~1.194 meters precision

quantize_lon

24-bit quantization ~0.000021457672119140625 degrees precision ~2.388 meters precision

unpack24_bit_uint

Unpacks a 24-bit integer from a buffer at the specified offset.

unpack_float

Unpacks a float from a buffer at the specified offset using little-endian format.

unweave_2d

Deweave a 32-bit number into two 16-bit numbers.

unweave_3d

Deweave a 48-bit number into three 16-bit numbers. Returns the three 16-bit numbers in a tuple.

unweave_and_delta_decode_3d_array

Decode an array of 3D points that were encoded using interweaving and delta encoding.

unweave_and_delta_decode_array

Decode an array of points that were encoded using interweaving and delta encoding.

weave_2d

Interweave two 16-bit numbers into a 32-bit number. In theory two small numbers can end up varint encoded to use less space.

weave_3d

Interweave three 16-bit numbers into a 48-bit number. In theory three small numbers can end up varint encoded to use less space.

weave_and_delta_encode_3d_array

Encode an array of 3D points using interweaving and delta encoding.

weave_and_delta_encode_array

Encode an array of points using interweaving and delta encoding.

zagzig

Applies zigzag decoding to transform an unsigned integer into a signed integer.

zigzag

Applies zigzag encoding to transform a signed integer into an unsigned integer.