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-/** \file
- * \brief Wrappers for the Ambient Light Sensor
- *
- * \see https://www.w3.org/TR/ambient-light/
- *
- * \author Copyright (C) 2021 Radek Hranicky
- *
- * \license SPDX-License-Identifier: GPL-3.0-or-later
- */
- //
- // This program is free software: you can redistribute it and/or modify
- // it under the terms of the GNU General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // This program is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public License
- // along with this program. If not, see <https://www.gnu.org/licenses/>.
- //
-
- /** \file
- * \ingroup wrappers
- * MOTIVATION
- * The AmbientLightSensor returns illuminance of the device's environment. This
- * is another value that describes the nearby physical surrounding of the device,
- * and can thus be used together with other readings for creating a unique fingerprint.
- *
- * WRAPPING
- * On examined stationary devices inside an office, the illuminance measured
- * was between 500 and 900, depending on the concrete position's light conditions.
- * All measured values were rounded to nearest 50 illuminance value.
- * The wrapper silumlates the same behavior. At start, a pseudorandom illuminance
- * value is drawn. As we simulate a stationary device, this value remains constant
- * for all AmbientLightSensor.prototype.illuminance calls.
- *
- * POSSIBLE IMPROVEMENTS
- * Simulation of changes in the illuminance.
- */
-
- /*
- * Create private namespace
- */
-(function() {
- /*
- * \brief Generates a pseudorandom faked illuminance value
- */
- function drawIlluminance() {
- const ILLUMINANCE_MIN = 500
- const ILLUMINANCE_MAX = 900
- const ILLUMINANCE_NEAREST = 50
-
- var ilu = sen_prng() * (ILLUMINANCE_MAX - ILLUMINANCE_MIN) + ILLUMINANCE_MIN;
- return Math.round(ilu / ILLUMINANCE_NEAREST) * ILLUMINANCE_NEAREST;
- }
- /*
- * \brief Initialization of the illuminance;
- */
- var init_data = `
- var illuminance = illuminance || drawIlluminance();
- `;
-
- var hc = sensorapi_prng_functions + drawIlluminance + init_data;
-
- var wrappers = [
- {
- parent_object: "AmbientLightSensor.prototype",
- parent_object_property: "illuminance",
- wrapped_objects: [],
- helping_code: hc,
- post_wrapping_code: [
- {
- code_type: "object_properties",
- parent_object: "AmbientLightSensor.prototype",
- parent_object_property: "illuminance",
- wrapped_objects: [],
- /** \brief replaces AmbientLightSensor.prototype.illuminance getter to return a faked value
- */
- wrapped_properties: [
- {
- property_name: "get",
- property_value: `
- function() {
- return illuminance;
- }`,
- },
- ],
- }
- ],
- },
- ]
- add_wrappers(wrappers);
-})()