/**
* Manager responsible for the interactions between the experiment's stimuli and the mouse.
*
* @author Alain Pitiot
* @version 2020.5
* @copyright (c) 2020 Ilixa Ltd. ({@link http://ilixa.com})
* @license Distributed under the terms of the MIT License
*/
import {PsychoJS} from './PsychoJS';
import {PsychObject} from '../util/PsychObject';
import * as util from '../util/Util';
/**
* This manager handles the interactions between the experiment's stimuli and the mouse.
* Note: the unit of Mouse is that of its associated Window.
*
* @name module:core.Mouse
* @class
* @extends PsychObject
* @param {Object} options
* @param {String} options.name - the name used when logging messages from this stimulus
* @param {Window} options.win - the associated Window
* @param {boolean} [options.autoLog= true] - whether or not to log
*
* @todo visible is not handled at the moment (mouse is always visible)
*/
export class Mouse extends PsychObject
{
constructor({
name,
win,
autoLog = true
} = {})
{
super(win._psychoJS, name);
// note: those are in window units:
this._lastPos = undefined;
this._prevPos = undefined; // used for motion detection and timing
this._movedistance = 0.0;
const units = win.units;
const visible = 1;
this._addAttributes(Mouse, win, units, visible, autoLog);
this.status = PsychoJS.Status.NOT_STARTED;
}
/**
* Get the current position of the mouse in mouse/Window units.
*
* @name module:core.Mouse#getPos
* @function
* @public
* @return {Array.number} the position of the mouse in mouse/Window units
*/
getPos()
{
// get mouse position in the canvas:
const mouseInfo = this.psychoJS.eventManager.getMouseInfo();
let pos_px = mouseInfo.pos.slice();
// convert to the associated window's reference frame with (0,0) as the centre of the window:
pos_px[0] = pos_px[0] - this.win.size[0] / 2;
pos_px[1] = this.win.size[1] / 2 - pos_px[1];
// convert to window units:
this._lastPos = util.to_win(pos_px, 'pix', this._win);
return this._lastPos;
}
/**
* Get the position of the mouse relative to that at the last call to getRel
* or getPos, in mouse/Window units.
*
* @name module:core.Mouse#getRel
* @function
* @public
* @return {Array.number} the relation position of the mouse in mouse/Window units.
*/
getRel()
{
if (typeof this._lastPos === 'undefined')
{
return this.getPos();
}
else
{
// note: (this.getPos()-lastPos) would not work here since getPos changes this._lastPos
const lastPos = this._lastPos;
const pos = this.getPos();
return [-lastPos[0] + pos[0], -lastPos[1] + pos[1]];
}
}
/**
* Get the travel of the mouse scroll wheel since the last call to getWheelRel.
*
* Note: Even though this method returns a [x, y] array, for most wheels/systems y is the only
* value that varies.
*
* @name module:core.Mouse#getWheelRel
* @function
* @public
* @return {Array.number} the mouse scroll wheel travel
*/
getWheelRel()
{
const mouseInfo = this.psychoJS.eventManager.getMouseInfo();
const wheelRel_px = mouseInfo.wheelRel.slice();
// convert to window units:
const wheelRel = util.to_win(wheelRel_px, 'pix', this._win);
mouseInfo.wheelRel = [0, 0];
return wheelRel;
}
/**
* 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.
*
* 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.
*
* @name module:core.Mouse#getPressed
* @function
* @public
* @param {boolean} [getTime= false] whether or not to also return timestamps
* @return {Array.number | Array.} 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.
*/
getPressed(getTime = false)
{
const buttonPressed = this.psychoJS.eventManager.getMouseInfo().buttons.pressed.slice();
if (!getTime)
{
return buttonPressed;
}
else
{
const buttonTimes = this.psychoJS.eventManager.getMouseInfo().buttons.times.slice();
return [buttonPressed, buttonTimes];
}
}
/**
* Determine whether the mouse has moved beyond a certain distance.
*
* distance
*
* - mouseMoved() or mouseMoved(undefined, false): determine whether the mouse has moved at all since the last
* call to [getPos]{@link module:core.Mouse#getPos}
* - mouseMoved(distance: number, false): determine whether the mouse has travelled further than distance, in terms of line of sight
* - mouseMoved(distance: [number,number], false): determine whether the mouse has travelled horizontally or vertically further then the given horizontal and vertical distances
*
*
* reset
*
* - mouseMoved(distance, true): reset the mouse move clock, return false
* - mouseMoved(distance, 'here'): return false
* - 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
*
*
* @name module:core.Mouse#mouseMoved
* @function
* @public
* @param {undefined|number|Array.number} [distance] - the distance to which the mouse movement is compared (see above for a full description)
* @param {boolean|String|Array.number} [reset= false] - see above for a full description
* @return {boolean} see above for a full description
*/
mouseMoved(distance, reset = false)
{
// make sure that _lastPos is defined:
if (typeof this._lastPos === 'undefined')
{
this.getPos();
}
this._prevPos = this._lastPos.slice();
this.getPos();
if (typeof reset === 'boolean' && reset == false)
{
if (typeof distance === 'undefined')
{
return (this._prevPos[0] != this._lastPos[0]) || (this._prevPos[1] != this._lastPos[1]);
}
else
{
if (typeof distance === 'number')
{
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]));
return (this._movedistance > distance);
}
if (this._prevPos[0] + distance[0] - this._lastPos[0] > 0.0)
{
return true;
} // moved on X-axis
if (this._prevPos[1] + distance[1] - this._lastPos[0] > 0.0)
{
return true;
} // moved on Y-axis
return false;
}
}
else if (typeof reset === 'boolean' && reset == true)
{
// reset the moveClock:
this.psychoJS.eventManager.getMouseInfo().moveClock.reset();
return false;
}
else if (reset === 'here')
{
// set to wherever we are
this._prevPos = this._lastPos.clone();
return false;
}
else if (reset instanceof Array)
{
// an (x,y) array
// reset to (x,y) to check movement from there
this._prevPos = reset.slice();
if (!distance)
{
return false;
}// just resetting prevPos, not checking distance
else
{
// checking distance of current pos to newly reset prevposition
if (typeof distance === 'number')
{
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]));
return (this._movedistance > distance);
}
if (Math.abs(this._lastPos[0] - this._prevPos[0]) > distance[0])
{
return true;
} // moved on X-axis
if (Math.abs(this._lastPos[1] - this._prevPos[1]) > distance[1])
{
return true;
} // moved on Y-axis
return false;
}
}
else
{
return false;
}
}
/**
* Get the amount of time elapsed since the last mouse movement.
*
* @name module:core.Mouse#mouseMoveTime
* @function
* @public
* @return {number} the time elapsed since the last mouse movement
*/
mouseMoveTime()
{
return this.psychoJS.eventManager.getMouseInfo().moveClock.getTime();
}
/**
* Reset the clocks associated to the given mouse buttons.
*
* @name module:core.Mouse#clickReset
* @function
* @public
* @param {Array.number} [buttons= [0,1,2]] the buttons to reset (0: left, 1: center, 2: right)
*/
clickReset(buttons = [0, 1, 2])
{
const mouseInfo = this.psychoJS.eventManager.getMouseInfo();
for (const b of buttons)
{
mouseInfo.buttons.clocks[b].reset();
mouseInfo.buttons.times[b] = 0.0;
}
}
}