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A module used to change the information of user action entered by various input devices such as touch screen or mouse into the logical virtual coordinates. You can easily create a UI that responds to user actions.

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<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/eventInput/TouchEventInput.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../../index.html">All files</a> / <a href="index.html">src/eventInput</a> TouchEventInput.ts </h1> <div class='clearfix'> </div> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83</td><td class="line-coverage 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InputEventType, inputKey?: string[] ): ExtendedEvent { <span class="missing-if-branch" title="if path not taken" >I</span>if (!this._isValidEvent(event, inputKey)) { <span class="cstat-no" title="statement not covered" > return null;</span> } return this.extendEvent(event); } &nbsp; public onEventEnd(event: InputEventType): void { this._baseTouches = (event as TouchEvent).touches; return; } &nbsp; public onRelease(): void { this.prevEvent = null; this._baseTouches = null; return; } &nbsp; public getTouches(event: InputEventType): number { return (event as TouchEvent).touches.length; } &nbsp; protected _getScale(event: TouchEvent): number { if (event.touches.length !== 2 || this._baseTouches.length &lt; 2) { return null; // TODO: consider calculating non-pinch gesture scale } return ( this._getDistance(event.touches[0], event.touches[1]) / this._getDistance(this._baseTouches[0], this._baseTouches[1]) ); } &nbsp; protected _getCenter(event: TouchEvent): { x: number; y: number } { return { x: event.touches[0].clientX, y: event.touches[0].clientY, }; } &nbsp; protected _getMovement(event: TouchEvent): { x: number; y: number } { const prev = this.prevEvent.srcEvent as TouchEvent; <span class="missing-if-branch" title="if path not taken" >I</span>if (event.touches[0].identifier !== prev.touches[0].identifier) { <span class="cstat-no" title="statement not covered" > return {</span> x: 0, y: 0, }; } return { x: event.touches[0].clientX - prev.touches[0].clientX, y: event.touches[0].clientY - prev.touches[0].clientY, }; } } &nbsp;</pre></td></tr> </table></pre> <div class='push'></div><!-- for sticky footer --> </div><!-- /wrapper --> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Wed Sep 16 2026 14:00:55 GMT+0900 (Korean Standard Time) </div> </div> <script src="../../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { 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