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261 lines
8.5 KiB
JavaScript
261 lines
8.5 KiB
JavaScript
/**
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* @file Manager responsible for the interactions between the experiment's stimuli and the mouse.
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*
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* @author Alain Pitiot
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* @version 3.0.0b10
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* @copyright (c) 2018 Ilixa Ltd. ({@link http://ilixa.com})
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* @license Distributed under the terms of the GNU General Public License (GPL).
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*/
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import { PsychoJS } from './PsychoJS';
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import { PsychObject } from '../util/PsychObject';
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import * as util from '../util/Util';
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/**
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* <p>This manager handles the interactions between the experiment's stimuli and the mouse.</p>
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* <p>Note: the unit of Mouse is that of its associated Window.</p>
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*
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* @name module:core.Mouse
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* @class
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* @extends PsychObject
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* @param {Object} options
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* @param {String} options.name - the name used when logging messages from this stimulus
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* @param {Window} options.win - the associated Window
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* @param {boolean} [options.autoLog= true] - whether or not to log
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*
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* @todo visible is not handled at the moment (mouse is always visible)
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*/
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export class Mouse extends PsychObject {
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constructor({
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name,
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win,
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autoLog = true
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} = {}) {
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super(win._psychoJS, name);
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// note: those are in window units:
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this._lastPos = undefined;
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this._prevPos = undefined; // used for motion detection and timing
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this._movedistance = 0.0;
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const units = win.units;
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const visible = 1;
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this._addAttributes(Mouse, win, units, visible, autoLog);
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this.status = PsychoJS.Status.NOT_STARTED;
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}
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/**
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* Get the current position of the mouse in mouse/Window units.
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*
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* @name module:core.Mouse#getPos
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* @function
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* @public
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* @return {Array.number} the position of the mouse in mouse/Window units
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*/
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getPos() {
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// get mouse position in the canvas:
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const mouseInfo = this.psychoJS.eventManager.getMouseInfo();
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let pos_px = mouseInfo.pos.slice();
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// convert to the associated window's reference frame with (0,0) as the centre of the window:
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pos_px[0] = pos_px[0] - this.win.size[0] / 2;
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pos_px[1] = this.win.size[1] / 2 - pos_px[1];
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// convert to window units:
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this._lastPos = util.to_win(pos_px, 'pix', this._win);
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return this._lastPos;
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}
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/**
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* Get the position of the mouse relative to that at the last call to getRel
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* or getPos, in mouse/Window units.
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*
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* @name module:core.Mouse#getRel
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* @function
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* @public
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* @return {Array.number} the relation position of the mouse in mouse/Window units.
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*/
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getRel() {
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if (typeof this._lastPos === 'undefined')
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return this.getPos();
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else {
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// note: (this.getPos()-lastPos) would not work here since getPos changes this._lastPos
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const lastPos = this._lastPos;
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const pos = this.getPos();
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return [-lastPos[0] + pos[0], -lastPos[1] + pos[1]];
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}
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}
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/**
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* Get the travel of the mouse scroll wheel since the last call to getWheelRel.
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*
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* <p>Note: Even though this method returns a [x, y] array, for most wheels/systems y is the only
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* value that varies.</p>
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*
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* @name module:core.Mouse#getWheelRel
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* @function
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* @public
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* @return {Array.number} the mouse scroll wheel travel
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*/
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getWheelRel()
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{
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const mouseInfo = this.psychoJS.eventManager.getMouseInfo();
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const wheelRel_px = mouseInfo.wheelRel.slice();
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// convert to window units:
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const wheelRel = util.to_win(wheelRel_px, 'pix', this._win);
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mouseInfo.wheelRel = [0, 0];
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return wheelRel;
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}
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/**
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* Get the status of each button (pressed or released) and, optionally, the time elapsed between the last call to [clickReset]{@link module:core.Mouse#clickReset} and the pressing or releasing of the buttons.
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*
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* <p>Note: clickReset is typically called at stimulus onset. When the participant presses a button, the time elapsed since the clickReset is stored internally and can be accessed any time afterwards with getPressed.</p>
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*
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* @name module:core.Mouse#getPressed
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* @function
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* @public
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* @param {boolean} [getTime= false] whether or not to also return timestamps
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* @return {Array.number | Array.<Array.number>} either an array of size 3 with the status (1 for pressed, 0 for released) of each mouse button [left, center, right], or a tuple with that array and another array of size 3 with the timestamps.
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*/
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getPressed(getTime = false) {
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const buttonPressed = this.psychoJS.eventManager.getMouseInfo().buttons.pressed.slice();
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if (!getTime)
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return buttonPressed;
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else {
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const buttonTimes = this.psychoJS.eventManager.getMouseInfo().buttons.times.slice();
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return [buttonPressed, buttonTimes];
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}
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}
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/**
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* Determine whether the mouse has moved beyond a certain distance.
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*
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* <p><b>distance</b>
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* <ul>
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* <li>mouseMoved() or mouseMoved(undefined, false): determine whether the mouse has moved at all since the last
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* call to [getPos]{@link module:core.Mouse#getPos}</li>
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* <li>mouseMoved(distance: number, false): determine whether the mouse has travelled further than distance, in terms of line of sight</li>
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* <li>mouseMoved(distance: [number,number], false): determine whether the mouse has travelled horizontally or vertically further then the given horizontal and vertical distances</li>
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* </ul></p>
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*
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* <p><b>reset</b>
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* <ul>
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* <li>mouseMoved(distance, true): reset the mouse move clock, return false</li>
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* <li>mouseMoved(distance, 'here'): return false</li>
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* <li>mouseMoved(distance, [x: number, y: number]: artifically set the previous mouse position to the given coordinates and determine whether the mouse moved further than the given distance</li>
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* </ul></p>
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*
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* @name module:core.Mouse#mouseMoved
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* @function
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* @public
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* @param {undefined|number|Array.number} [distance] - the distance to which the mouse movement is compared (see above for a full description)
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* @param {boolean|String|Array.number} [reset= false] - see above for a full description
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* @return {boolean} see above for a full description
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*/
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mouseMoved(distance, reset = false) {
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// make sure that _lastPos is defined:
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if (typeof this._lastPos === 'undefined')
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this.getPos();
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this._prevPos = this._lastPos.slice();
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this.getPos();
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if (typeof reset === 'boolean' && reset == false) {
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if (typeof distance === 'undefined')
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return (this._prevPos[0] != this._lastPos[0]) || (this._prevPos[1] != this._lastPos[1]);
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else {
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if (typeof distance === 'number') {
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this._movedistance = Math.sqrt((this._prevPos[0] - this._lastPos[0]) * (this._prevPos[0] - this._lastPos[0]) + (this._prevPos[1] - this._lastPos[1]) * (this._prevPos[1] - this._lastPos[1]));
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return (this._movedistance > distance);
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}
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if (this._prevPos[0] + distance[0] - this._lastPos[0] > 0.0)
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return true; // moved on X-axis
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if (this._prevPos[1] + distance[1] - this._lastPos[0] > 0.0)
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return true; // moved on Y-axis
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return false;
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}
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}
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else if (typeof reset === 'boolean' && reset == true) {
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// reset the moveClock:
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this.psychoJS.eventManager.getMouseInfo().moveClock.reset();
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return false;
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}
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else if (reset === 'here') {
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// set to wherever we are
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this._prevPos = this._lastPos.clone();
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return false;
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}
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else if (reset instanceof Array) {
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// an (x,y) array
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// reset to (x,y) to check movement from there
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this._prevPos = reset.slice();
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if (!distance)
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return false; // just resetting prevPos, not checking distance
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else {
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// checking distance of current pos to newly reset prevposition
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if (typeof distance === 'number') {
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this._movedistance = Math.sqrt((this._prevPos[0] - this._lastPos[0]) * (this._prevPos[0] - this._lastPos[0]) + (this._prevPos[1] - this._lastPos[1]) * (this._prevPos[1] - this._lastPos[1]));
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return (this._movedistance > distance);
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}
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if (Math.abs(this._lastPos[0] - this._prevPos[0]) > distance[0])
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return true; // moved on X-axis
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if (Math.abs(this._lastPos[1] - this._prevPos[1]) > distance[1])
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return true; // moved on Y-axis
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return false;
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}
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}
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else
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return false;
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}
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/**
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* Get the amount of time elapsed since the last mouse movement.
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*
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* @name module:core.Mouse#mouseMoveTime
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* @function
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* @public
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* @return {number} the time elapsed since the last mouse movement
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*/
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mouseMoveTime() {
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return this.psychoJS.eventManager.getMouseInfo().moveClock.getTime();
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}
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/**
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* Reset the clocks associated to the given mouse buttons.
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*
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* @name module:core.Mouse#clickReset
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* @function
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* @public
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* @param {Array.number} [buttons= [0,1,2]] the buttons to reset (0: left, 1: center, 2: right)
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*/
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clickReset(buttons = [0, 1, 2]) {
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const mouseInfo = this.psychoJS.eventManager.getMouseInfo();
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for (const b of buttons) {
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mouseInfo.buttons.clocks[b].reset();
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mouseInfo.buttons.times[b] = 0.0;
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}
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}
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}
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