diff --git a/rotate.js b/rotate.js
new file mode 100755
index 0000000..c2e5726
--- /dev/null
+++ b/rotate.js
@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+
+/**
+ * Rotate a given point around an origin point in 3d space.
+ * @source	GitHub Copilot
+ * @warning	Not completely tested! Pending a thorough evaluation.
+ * @param	{Vector3}	origin	The origin point to rotate around
+ * @param	{Vector3}	point	The point to rotate.
+ * @param	{Number}	x	Rotate this much around the X axis (yz plane), in radians.
+ * @param	{Number}	y	Rotate this much around the Y axis (xz plane), in radians.
+ * @param	{Number}	z	Rotate this much around the Z axis (xy plane), in radians.
+ * @return	{Vector3}	The rotated point.
+ */
+function rotate_point_3d(origin, point, x, y, z)
+{
+	point[0] = point[0] - origin[0];
+	point[1] = point[1] - origin[1];
+	point[2] = point[2] - origin[2];
+	
+    // rotate around x
+    var x1 = point[0];
+    var y1 = point[1] * Math.cos(x) - point[2] * Math.sin(x);
+    var z1 = point[1] * Math.sin(x) + point[2] * Math.cos(x);
+
+    // rotate around y
+    var x2 = x1 * Math.cos(y) + z1 * Math.sin(y);
+    var y2 = y1;
+    var z2 = -x1 * Math.sin(y) + z1 * Math.cos(y);
+
+    // rotate around z
+    var x3 = x2 * Math.cos(z) - y2 * Math.sin(z);
+    var y3 = x2 * Math.sin(z) + y2 * Math.cos(z);
+    var z3 = z2;
+
+    return [x3, y3, z3];
+}
+
+function deg_to_rad(deg)
+{
+    return deg * Math.PI / 180;
+}
+
+function point_to_string(point, decimal_places=3)
+{
+    return "(x " + point[0].toFixed(decimal_places) + ", y " + point[1].toFixed(decimal_places) + ", z " + point[2].toFixed(decimal_places) + ")";
+}
+
+
+
+
+console.log(point_to_string(rotate_point_3d(
+	[ 0, 0, 0 ],
+	[ 5, 0, 0 ],
+	deg_to_rad(0),		// rotate around x axis = yz plane
+	deg_to_rad(90),	// rotate around y axis = xz plane
+	deg_to_rad(0)		// rotate around z axis = xy plane
+)));
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