First Release of Claw3D (#11)

Co-authored-by: iamlukethedev <iamlukethedev@users.noreply.github.com>

test_coords.js

@@ -0,0 +1,28 @@
+async function main() {
+  const THREE = await import("three");
+
+  // Earth radius = 2.
+  // latitude 40.7, longitude -74.
+  function latLonToVector3(lat, lon, radius) {
+    const phi = (90 - lat) * (Math.PI / 180);
+    // three.js spherical maps usually have lon=0 at +Z, and lon=90 at +X.
+    const theta = (lon + 90) * (Math.PI / 180); // Wait, standard spherical coords in three.js.
+
+    const x = -radius * Math.sin(phi) * Math.cos(theta);
+    const y = radius * Math.cos(phi);
+    const z = radius * Math.sin(phi) * Math.sin(theta);
+
+    return new THREE.Vector3(x, y, z);
+  }
+
+  // NY.
+  console.log("NY:", latLonToVector3(40.7, -74, 2));
+
+  // Let's try London.
+  console.log("London:", latLonToVector3(51.5, 0, 2));
+
+  // Let's try SF.
+  console.log("SF:", latLonToVector3(37.7, -122, 2));
+}
+
+void main();