Crate oxiproj_engine 

oxiproj-engine — Proj-string parser, operation dispatch, and transformation pipelines.

Part of OxiProj, the COOLJAPAN Pure-Rust port of PROJ. See the workspace blueprint oxiproj.md for the full design.

Structs

Context

A lightweight transformation context.

DistortionRaster

A distortion-field raster: Tissot parameters on a regular lon/lat grid.

ParamList

An ordered list of parsed proj-string parameters.

ParamView

A borrowing view over a ParamList implementing ProjParamLookup and TransParamLookup.

Pipeline

A sequence of crate::pj::Pj steps applied in order (forward) or in reverse (inverse). The 4D methods are the true entry points; the 2D methods wrap through them.

Pj

A prepared coordinate operation with input/output unit handling.

TissotCell

One cell in the distortion raster.

Enums

TissotMethod

Whether Tissot values came from exact AD or numeric finite-difference.

TmercAlgo

Algorithm selection for transverse Mercator, mirroring PROJ’s tmerc algo choice.

Functions

create

Construct a Pj from a proj-string.

create_projection_only

Construct a Pj that performs the map projection only, ignoring any +towgs84/+nadgrids/+geoidgrids datum-shift directives.

create_with_ctx

Construct a Pj from a proj-string using a supplied Context.

parse

Parse a proj-string into an ordered ParamList.

setup_ellipsoid

Resolve an Ellipsoid from the parsed proj-string parameters.

trans

Transform a single coordinate in the given direction.

trans_array

Transform a slice of coordinates in place.