@tamagui/react-native-web-lite/dist/cjs/vendor/react-native/TouchHistoryMath/index.cjs

React Native for Web

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var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all) __defProp(target, name, {
    get: all[name],
    enumerable: true
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};
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var __toCommonJS = mod => __copyProps(__defProp({}, "__esModule", {
  value: true
}), mod);
var TouchHistoryMath_exports = {};
__export(TouchHistoryMath_exports, {
  TouchHistoryMath: () => TouchHistoryMath,
  default: () => TouchHistoryMath_default
});
module.exports = __toCommonJS(TouchHistoryMath_exports);
const TouchHistoryMath = {
  /**
   * This code is optimized and not intended to look beautiful. This allows
   * computing of touch centroids that have moved after `touchesChangedAfter`
   * timeStamp. You can compute the current centroid involving all touches
   * moves after `touchesChangedAfter`, or you can compute the previous
   * centroid of all touches that were moved after `touchesChangedAfter`.
   *
   * @param {TouchHistoryMath} touchHistory Standard Responder touch track
   * data.
   * @param {number} touchesChangedAfter timeStamp after which moved touches
   * are considered "actively moving" - not just "active".
   * @param {boolean} isXAxis Consider `x` dimension vs. `y` dimension.
   * @param {boolean} ofCurrent Compute current centroid for actively moving
   * touches vs. previous centroid of now actively moving touches.
   * @return {number} value of centroid in specified dimension.
   */
  centroidDimension: function (touchHistory, touchesChangedAfter, isXAxis, ofCurrent) {
    const touchBank = touchHistory.touchBank;
    let total = 0;
    let count = 0;
    const oneTouchData = touchHistory.numberActiveTouches === 1 ? touchHistory.touchBank[touchHistory.indexOfSingleActiveTouch] : null;
    if (oneTouchData !== null) {
      if (oneTouchData.touchActive && oneTouchData.currentTimeStamp > touchesChangedAfter) {
        total += ofCurrent && isXAxis ? oneTouchData.currentPageX : ofCurrent && !isXAxis ? oneTouchData.currentPageY : !ofCurrent && isXAxis ? oneTouchData.previousPageX : oneTouchData.previousPageY;
        count = 1;
      }
    } else {
      for (let i = 0; i < touchBank.length; i++) {
        const touchTrack = touchBank[i];
        if (touchTrack !== null && touchTrack !== void 0 && touchTrack.touchActive && touchTrack.currentTimeStamp >= touchesChangedAfter) {
          let toAdd;
          if (ofCurrent && isXAxis) {
            toAdd = touchTrack.currentPageX;
          } else if (ofCurrent && !isXAxis) {
            toAdd = touchTrack.currentPageY;
          } else if (!ofCurrent && isXAxis) {
            toAdd = touchTrack.previousPageX;
          } else {
            toAdd = touchTrack.previousPageY;
          }
          total += toAdd;
          count++;
        }
      }
    }
    return count > 0 ? total / count : TouchHistoryMath.noCentroid;
  },
  currentCentroidXOfTouchesChangedAfter: function (touchHistory, touchesChangedAfter) {
    return TouchHistoryMath.centroidDimension(touchHistory, touchesChangedAfter, true,
    // isXAxis
    true
    // ofCurrent
    );
  },
  currentCentroidYOfTouchesChangedAfter: function (touchHistory, touchesChangedAfter) {
    return TouchHistoryMath.centroidDimension(touchHistory, touchesChangedAfter, false,
    // isXAxis
    true
    // ofCurrent
    );
  },
  previousCentroidXOfTouchesChangedAfter: function (touchHistory, touchesChangedAfter) {
    return TouchHistoryMath.centroidDimension(touchHistory, touchesChangedAfter, true,
    // isXAxis
    false
    // ofCurrent
    );
  },
  previousCentroidYOfTouchesChangedAfter: function (touchHistory, touchesChangedAfter) {
    return TouchHistoryMath.centroidDimension(touchHistory, touchesChangedAfter, false,
    // isXAxis
    false
    // ofCurrent
    );
  },
  currentCentroidX: function (touchHistory) {
    return TouchHistoryMath.centroidDimension(touchHistory, 0,
    // touchesChangedAfter
    true,
    // isXAxis
    true
    // ofCurrent
    );
  },
  currentCentroidY: function (touchHistory) {
    return TouchHistoryMath.centroidDimension(touchHistory, 0,
    // touchesChangedAfter
    false,
    // isXAxis
    true
    // ofCurrent
    );
  },
  noCentroid: -1
};
var TouchHistoryMath_default = TouchHistoryMath;