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215 lines
6.9 KiB
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215 lines
6.9 KiB
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<title>JSDoc: Source: visual/BaseVisualStim.js</title>
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<h1 class="page-title">Source: visual/BaseVisualStim.js</h1>
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<pre class="prettyprint source linenums"><code>/**
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* Base class for all visual stimuli.
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*
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* @author Alain Pitiot
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* @version 3.0.0b11
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* @copyright (c) 2018 Ilixa Ltd. ({@link http://ilixa.com})
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* @license Distributed under the terms of the MIT License
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*/
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import {MinimalStim} from '../core/MinimalStim';
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import {WindowMixin} from '../core/WindowMixin';
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import * as util from '../util/Util';
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/**
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* Base class for all visual stimuli.
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*
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* @name module:visual.BaseVisualStim
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* @class
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* @extends MinimalStim
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* @mixes WindowMixin
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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 {string} [options.units= "norm"] - the units of the stimulus (e.g. for size, position, vertices)
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* @param {number} [options.ori= 0.0] - the orientation (in degrees)
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* @param {number} [options.opacity= 1.0] - the opacity
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* @param {Array.<number>} [options.pos= [0, 0]] - the position of the center of the stimulus
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* @param {number} [options.size= 1.0] - the size
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* @param {boolean} [options.autoDraw= false] - whether or not the stimulus should be automatically drawn on every frame flip
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* @param {boolean} [options.autoLog= false] - whether or not to log
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*/
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export class BaseVisualStim extends util.mix(MinimalStim).with(WindowMixin)
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{
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constructor({
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name,
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win,
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units = 'norm',
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ori = 0.0,
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opacity = 1.0,
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pos = [0, 0],
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size,
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autoDraw,
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autoLog = false
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} = {})
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{
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super({win, name, autoDraw, autoLog});
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// whether the vertices need to be updated:
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this._needVertexUpdate = true;
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// the vertices (in pixel units):
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this._vertices_px = undefined;
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this._addAttributes(BaseVisualStim, units, ori, opacity, pos, size);
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this._needUpdate = true;
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}
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/**
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* Setter for the size attribute.
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*
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* @name module:visual.BaseVisualStim#setSize
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* @public
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* @param {number} size - the stimulus size
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* @param {boolean} [log= false] - whether of not to log
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*/
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setSize(size, log = false)
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{
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// size is either undefined or a tuple of numbers:
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if (typeof size !== 'undefined') {
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size = util.toNumerical(size);
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if (!Array.isArray(size))
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size = [size, size];
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}
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this._setAttribute('size', size, log);
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this._needVertexUpdate = true;
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this._needUpdate = true;
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}
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/**
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* Setter for the orientation attribute.
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*
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* @name module:visual.BaseVisualStim#setOri
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* @public
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* @param {number} ori - the orientation in degree with 0 as the vertical position, positive values rotate clockwise.
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* @param {boolean} [log= false] - whether of not to log
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*/
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setOri(ori, log = false)
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{
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this._setAttribute('ori', ori, log);
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let radians = ori * 0.017453292519943295;
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this._rotationMatrix = [[Math.cos(radians), -Math.sin(radians)],
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[Math.sin(radians), Math.cos(radians)]];
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//this._needVertexUpdate = true ; // need to update update vertices
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this._needUpdate = true;
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}
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/**
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* Setter for the position attribute.
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*
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* @name module:visual.BaseVisualStim#setPos
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* @public
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* @param {Array.<number>} pos - position of the center of the stimulus, in stimulus units
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* @param {boolean} [log= false] - whether of not to log
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*/
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setPos(pos, log = false)
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{
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this._setAttribute('pos', util.toNumerical(pos), log);
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this._needUpdate = true;
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}
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/**
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* Setter for the opacity attribute.
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*
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* @name module:visual.BaseVisualStim#setOpacity
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* @public
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* @param {number} opacity - the opacity: 0 is completely transparent, 1 is fully opaque
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* @param {boolean} [log= false] - whether of not to log
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*/
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setOpacity(opacity, log = false)
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{
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this._setAttribute('opacity', opacity, log);
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this._needUpdate = true;
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}
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/*
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* Get the vertices in pixel units.
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*
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* @name module:visual.BaseVisualStim#_getVertices_px
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* @private
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* @return {Array.<[number, number]>} the vertices
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*/
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_getVertices_px(/*force = false*/)
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{
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/*if (!force && typeof this._vertices_px !== 'undefined')
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return this._vertices_px;*/
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// handle flipping:
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let flip = [1.0, 1.0];
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if ('_flipHoriz' in this && this._flipHoriz)
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flip[0] = -1.0;
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if ('_flipVert' in this && this._flipVert)
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flip[1] = -1.0;
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// handle size, flipping, and convert to pixel units:
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this._vertices_px = this._vertices.map( v => util.to_px([v[0] * this._size[0] * flip[0], v[1] * this._size[1] * flip[1]], this._units, this._win) );
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return this._vertices_px;
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}
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}
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</code></pre>
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</article>
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</section>
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</div>
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<nav>
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<h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-core.html">core</a></li><li><a href="module-data.html">data</a></li><li><a href="module-sound.html">sound</a></li><li><a href="module-visual.html">visual</a></li></ul><h3>Classes</h3><ul><li><a href="module-core.BuilderKeyResponse.html">BuilderKeyResponse</a></li><li><a href="module-core.EventManager.html">EventManager</a></li><li><a href="module-core.GUI.html">GUI</a></li><li><a href="module-core.MinimalStim.html">MinimalStim</a></li><li><a href="module-core.Mouse.html">Mouse</a></li><li><a href="module-core.PsychoJS.html">PsychoJS</a></li><li><a href="module-core.ServerManager.html">ServerManager</a></li><li><a href="module-core.Window.html">Window</a></li><li><a href="module-data.ExperimentHandler.html">ExperimentHandler</a></li><li><a href="module-data.TrialHandler.html">TrialHandler</a></li><li><a href="module-sound.Sound.html">Sound</a></li><li><a href="module-sound.TonePlayer.html">TonePlayer</a></li><li><a href="module-sound.TrackPlayer.html">TrackPlayer</a></li><li><a href="module-visual.BaseShapeStim.html">BaseShapeStim</a></li><li><a href="module-visual.BaseVisualStim.html">BaseVisualStim</a></li><li><a href="module-visual.ImageStim.html">ImageStim</a></li><li><a href="module-visual.Rect.html">Rect</a></li><li><a href="module-visual.TextStim.html">TextStim</a></li></ul><h3>Mixins</h3><ul><li><a href="module-core.WindowMixin.html">WindowMixin</a></li></ul><h3>Interfaces</h3><ul><li><a href="module-sound.SoundPlayer.html">SoundPlayer</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sun Nov 18 2018 20:31:50 GMT+0100 (CET)
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