Crate omap

Write Open Orienteering Mapper’s .omap files in Rust

Example

use omap::{
    objects::{AreaObject, LineObject, PointObject, TextObject, TagTrait},
    symbols::{AreaSymbol, LineSymbol, PointSymbol, TextSymbol},
    Omap, Scale,
    };
use geo_types::{Coord, LineString, Polygon, Point};
use std::{path::PathBuf, str::FromStr};

let map_center = Coord {x: 463_575.5, y: 6_833_849.6};
let map_center_elevation_meters = 2_469.;
let crs_epsg_code = 25832;

let mut omap = Omap::new(
    map_center,
    Scale::S15_000,
    Some(crs_epsg_code),
    Some(map_center_elevation_meters)
).expect("Could not make map with the given CRS-code");

// coordinates of geometry are in the same units as the map_center, but relative the map_center
let polygon = Polygon::new(
    LineString::new(vec![
        Coord {x: -50., y: -50.},
        Coord {x: -50., y: 50.},
        Coord {x: 50., y: 50.},
        Coord {x: 50., y: -50.},
        Coord {x: -50., y: -50.},
    ]), vec![]);
let mut area_object = AreaObject::from_polygon(polygon, AreaSymbol::RoughVineyard, 45.0_f64.to_radians());
area_object.add_tag("tag_key", "tag_value");

let line_string = LineString::new(
        vec![
            Coord {x: -60., y: 20.},
            Coord {x: -20., y: 25.},
            Coord {x: 0., y: 27.5},
            Coord {x: 20., y: 26.},
            Coord {x: 40., y: 22.5},
            Coord {x: 60., y: 20.},
            Coord {x: 60., y: -20.},
            Coord {x: -60., y: -20.},
        ]
    );
let mut line_object = LineObject::from_line_string(line_string, LineSymbol::Contour);
line_object.add_elevation_tag(20.);

let point = Point::new(0.0_f64, 0.0_f64);
let point_object = PointObject::from_point(point, PointSymbol::ElongatedDotKnoll, -45.0_f64.to_radians());

let text_point = Point::new(0.0_f64, -30.0_f64);
let text = "some text".to_string();
let text_object = TextObject::from_point(text_point, TextSymbol::SpotHeight, text);

omap.add_object(area_object);
omap.add_object(line_object);
omap.add_object(point_object);
omap.add_object(text_object);

let max_bezier_deviation_meters = 2.5;

omap.write_to_file(
    PathBuf::from_str("./my_map.omap").unwrap(),
    Some(max_bezier_deviation_meters)
).expect("Could not write to file");

Modules

objects

Objects module

symbols

Symbols module

Structs

BezierError

The allowed error in bezier conversion for line objects and area objects None represents not converting to bezier when writing

Omap

Struct representing an Orienteering map

Enums

OmapError

crate error

Scale

Map scale

Type Aliases

OmapResult

crate result