FourdgsWriteOptions class - writer library

Constructors

FourdgsWriteOptions({String profile = 'default', double cutoff = fourdgsDefaultCutoff, int codec = codecDeflate, int level = 6, int maxDepth = 6, int minChunkGaussians = 2048, bool writeIndex = true, bool writeStatistics = false, bool writeSummaryOffsets = false, bool writeCrc = true, int shBands = 3, List<int> shBitDepths = const <int>[], bool verify = true, String library = '4dgs-dart encoder', String sceneProfile = '', Map<String, String> attributes = const <String, String>{}, FourdgsObjectLayer? objects}): const

Properties

attributes → Map<String, String>: The Header's free-form attribute map.
final
codec → int: The stream codec. Only codecDeflate is available to a pure-Dart build, which is why it is the default everywhere.
final
cutoff → double: The Header's marginal visibility threshold. Not only metadata: it sets the support constant the per-gaussian velocity grid is derived from, so encoder and decoder must agree on it, and they do by reading it from the file.
final
hashCode → int: The hash code for this object.
no setterinherited
level → int: Deflate compression level: -1 for the codec's own default, or 0–9 from fastest to smallest. Anything else is refused by name.
final
library → String: Free-form producer identification, written to the Header.
final
maxDepth → int: Depth of the temporal partition below each window, 0 to 32. 0 writes one chunk per window interval, which is the coarsest partition that is still a partition. The ceiling is there because the descent is recursive and a gaussian that lives for one instant never stops descending.
final
minChunkGaussians → int: The population a subdivision has to reach to be worth its own chunk, at least 1. Below it a node hands its gaussians back to its parent, so a deep tree over a small scene does not turn into hundreds of chunks of four.
final
objects → FourdgsObjectLayer?: The Object Table and optional SE(3) tracks to write.
final
profile → String: The quantization profile: fine, default or coarse. It selects the error bounds, and through them every grid pitch the file declares.
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
sceneProfile → String: The Header's profile field — a well-known scene profile name, which is a different thing from the quantization profile above.
final
shBands → int: Highest spherical-harmonic band to write, capped further by the scene's own degree.
final
shBitDepths → List<int>: Per-band spherical-harmonic bit depths, band 1 first.
final
verify → bool: Decode each band record back and measure the deviation before declaring a bound for it.
final
writeCrc → bool: final
writeIndex → bool: final
writeStatistics → bool: final
writeSummaryOffsets → bool: final

Methods

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited