Module cmt 

“cmt “ documents: CSP’s binary tree format for animation track mixers (Track.TrackActionMixer and TrackActionMixer2).

A document is "cmt ", a four-character version (0100 or 0110), "binc", a CRC-32 (little endian) of everything after it, then a string table and one root node. All numbers are little endian. Version 0110 puts a 12-byte header before each node (16, then the offsets of the attribute count and of the child count from the node’s start).

The string table starts with the type names of the version (see TYPES_0100 / TYPES_0110), followed by every other string in the order a pre-order walk first uses it: node name, string values, attribute names and values, then the children. Document::to_bytes rebuilds the table that way, so documents CSP wrote are reproduced byte for byte. See docs/spec/08-animation.md.

Structs

Document

A whole document.

Node

One node: a name, a value, attributes (name, value) and children.

Enums

Value

A node’s value. Quat and Matrix44 have not been seen in a file and are refused rather than guessed.

Constants

TYPES_0100

Type names of version 0100 (single precision arrays and pairs).

TYPES_0110

Type names of version 0110 (double precision arrays and pairs).

Functions

crc32

CRC-32 (zlib’s) of data.

pack

The external chunk payload of a document’s bytes, compressed as CSP does.

unpack

Decode an external chunk payload holding a zlib-compressed document: u64 big endian (bytes that follow), u32 little endian (zlib stream length), the stream.