armory3d.armortools/paint/assets/plugins/uv_unwrap.js

let plugin = plugin_create();

function unwrap_mesh(mesh) {
	proc_xatlas_unwrap(mesh);
}

let h1 = ui_handle_create();
plugin_notify_on_ui(plugin, function() {
	if (ui_panel(h1, "UV Unwrap")) {
		if (ui_button("Unwrap Mesh")) {
			plugin_uv_unwrap_button();
		}
	}
});

util_mesh_unwrappers_set("uv_unwrap.js", unwrap_mesh);
plugin_notify_on_delete(plugin, function() {
	util_mesh_unwrappers_delete("uv_unwrap.js");
});