Struct GeoReference 

pub struct GeoReference {

    pub crs_name: Option<String>,
    pub crs_description: Option<String>,
    pub geodetic_datum: Option<String>,
    pub vertical_datum: Option<String>,
    pub map_projection: Option<String>,
    pub map_zone: Option<String>,
    pub map_unit: Option<String>,
    pub map_unit_scale: Option<f64>,
    pub source: GeoRefSource,
    pub eastings: f64,
    pub northings: f64,
    pub orthogonal_height: f64,
    pub x_axis_abscissa: f64,
    pub x_axis_ordinate: f64,
    pub scale: f64,
}

Georeferencing information extracted from IFC model

Fields

crs_name: Option<String>

CRS name (e.g., “EPSG:32632”)

crs_description: Option<String>

CRS description from IfcProjectedCRS.Description.

geodetic_datum: Option<String>

Geodetic datum (e.g., “WGS84”)

vertical_datum: Option<String>

Vertical datum (e.g., “NAVD88”)

map_projection: Option<String>

Map projection (e.g., “UTM Zone 32N”)

map_zone: Option<String>

Map zone (e.g., “32N”) from IfcProjectedCRS.MapZone.

map_unit: Option<String>

Map unit name resolved from IfcProjectedCRS.MapUnit (e.g. “METRE”, “MILLIMETRE”). None when no MapUnit is authored — per spec the project length unit then applies.

map_unit_scale: Option<f64>

Scale factor converting MapConversion values to metres, derived from MapUnit (0.001 for millimetres). None when no MapUnit is authored.

source: GeoRefSource

Where the data was authored (IfcMapConversion, ePSet fallback, or legacy IfcSite lat/long).

eastings: f64

False easting (X offset to map CRS)

northings: f64

False northing (Y offset to map CRS)

orthogonal_height: f64

Orthogonal height (Z offset)

x_axis_abscissa: f64

X-axis abscissa (cos of rotation angle)

x_axis_ordinate: f64

X-axis ordinate (sin of rotation angle)

scale: f64

Scale factor (default 1.0)

Implementations

impl GeoReference

pub fn new() -> Self

Create new georeferencing info with defaults

pub fn has_georef(&self) -> bool

Check if georeferencing is present

pub fn rotation(&self) -> f64

Get rotation angle in radians

pub fn local_to_map(&self, x: f64, y: f64, z: f64) -> (f64, f64, f64)

Transform local coordinates to map coordinates

Per IFC4x3 IfcMapConversion: “a scaling of the three axes (x,y,z), by the same Scale, followed by an anti-clockwise rotation about the z-axis […] and then a translation in (x,y,z) of Eastings, Northings, OrthogonalHeight” — note the Scale applies to z as well (“one scale is applied equally to x, y and z, to convert units”).

pub fn map_to_local(&self, e: f64, n: f64, h: f64) -> (f64, f64, f64)

Transform map coordinates to local coordinates

pub fn to_matrix(&self) -> [f64; 16]

Get 4x4 transformation matrix (column-major for OpenGL/WebGL)

Trait Implementations

impl Clone for GeoReference

fn clone(&self) -> GeoReference

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GeoReference

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for GeoReference

fn default() -> Self

Returns the “default value” for a type.