Merge pull request #55: include example

.github/workflows/test.yml

@@ -20,6 +20,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@stable
       - run: script/download-test-data.sh
+      - run: cargo build --all-targets
       - run: cargo test
       - run: cargo test --no-default-features
       - run: cargo test --features test_full

examples/direct.rs

@@ -0,0 +1,16 @@
+use geographiclib_rs::{DirectGeodesic, Geodesic};
+fn main() {
+    let g = Geodesic::wgs84();
+    let jfk_lat = 40.64;
+    let jfk_lon = -73.78;
+    let northeast_azimuth = 45.0;
+
+    let (lat, lon, az) = g.direct(jfk_lat, jfk_lon, northeast_azimuth, 10e6);
+
+    use approx::assert_relative_eq;
+    assert_relative_eq!(lat, 32.621100463725796);
+    assert_relative_eq!(lon, 49.05248709295982, epsilon = 1e-13);
+    assert_relative_eq!(az, 140.4059858768007);
+
+    println!("lat: {lat}, lon: {lon}, az: {az}");
+}

src/geodesic.rs

@@ -1648,9 +1648,7 @@ mod tests {
     fn test_arcdirect() {
         // Corresponds with ArcDirectCheck from Java, or test_arcdirect from Python
         let geod = Geodesic::wgs84();
-        for (_line_num, (lat1, lon1, azi1, lat2, lon2, azi2, s12, a12, m12, M12, M21, S12)) in
-            TESTCASES.iter().enumerate()
-        {
+        for (lat1, lon1, azi1, lat2, lon2, azi2, s12, a12, m12, M12, M21, S12) in TESTCASES.iter() {
             let (
                 _computed_a12,
                 computed_lat2,