-// traverse the specified fan/strip/list of vertices and attempt to
-// calculate "none stretching" texture coordinates
-point_list calc_tex_coords( const FGBucket& b, const point_list& geod_nodes,
+/**
+ * Traverse the specified fan/strip/list of vertices and attempt to
+ * calculate "none stretching" texture coordinates.
+ * @param b the bucket containing the structure
+ * @param geod_nodes vertices in geodetic coordinates
+ * @param fan integer list of indices pointing into the vertex list
+ * @param scale (default = 1.0) scaling factor
+ * @return list of texture coordinates
+ */
+point_list sgCalcTexCoords( const SGBucket& b, const point_list& geod_nodes,