@helpwave/hightide/dist/util/loopingArray.mjs.map

helpwave's component and theming library

{"version":3,"sources":["../../src/util/loopingArray.ts"],"sourcesContent":["/**\n *  1 is forwards\n *\n * -1 is backwards\n */\nexport type Direction = 1 | -1\n\nexport class LoopingArrayCalculator {\n  length: number\n  isLooping: boolean\n  allowedOverScroll: number\n\n  constructor(length: number, isLooping: boolean = true, allowedOverScroll: number = 0.1) {\n    if (allowedOverScroll < 0 || length < 1) {\n      throw new Error('Invalid parameters: allowedOverScroll >= 0 and length >= 1 must be true')\n    }\n\n    this.length = length\n    this.isLooping = isLooping\n    this.allowedOverScroll = allowedOverScroll\n  }\n\n  getCorrectedPosition(position: number): number {\n    if (!this.isLooping) {\n      return Math.max(-this.allowedOverScroll, Math.min(this.allowedOverScroll + this.length - 1, position))\n    }\n    if (position >= this.length) {\n      return position % this.length\n    }\n    if (position < 0) {\n      return this.length - (Math.abs(position) % this.length)\n    }\n    return position\n  }\n\n  static withoutOffset(position: number): number {\n    return position + LoopingArrayCalculator.getOffset(position)\n  }\n\n  static getOffset(position: number): number {\n    return Math.round(position) - position // For example: 45.5 => 46 - 45.5 = 0.5\n  }\n\n  /**\n   * @return absolute distance forwards or Infinity when the target cannot be reached (only possible when not isLooping)\n   */\n  getDistanceDirectional(position: number, target: number, direction: Direction): number {\n    if (!this.isLooping && (position < -this.allowedOverScroll || position > this.allowedOverScroll + this.length - 1)) {\n      throw new Error('Invalid parameters: position is out of bounds.')\n    }\n\n    const isForwardInvalid = (direction === 1 && position > target)\n    const isBackwardInvalid = (direction === -1 && target < position)\n\n    if (!this.isLooping && (isForwardInvalid || isBackwardInvalid)) {\n      return Infinity\n    }\n\n    if (direction === -1) {\n      return this.getDistanceDirectional(target, position, 1)\n    }\n\n    position = this.getCorrectedPosition(position)\n    target = this.getCorrectedPosition(target)\n\n    let distance = (target - position) * direction\n    if (distance < 0) {\n      distance = this.length - (Math.abs(position) % this.length) + target\n    }\n\n    return distance\n  }\n\n  getDistanceForward(position: number, target: number): number {\n    return this.getDistanceDirectional(position, target, 1)\n  }\n\n  getDistanceBackward(position: number, target: number): number {\n    return this.getDistanceDirectional(position, target, -1)\n  }\n\n  getDistance(position: number, target: number): number {\n    const forwardDistance = this.getDistanceForward(position, target)\n    const backwardDistance = this.getDistanceBackward(position, target)\n\n    return Math.min(forwardDistance, backwardDistance)\n  }\n\n  getBestDirection(position: number, target: number): Direction {\n    const forwardDistance = this.getDistanceForward(position, target)\n    const backwardDistance = this.getDistanceBackward(position, target)\n    return forwardDistance < backwardDistance ? 1 : -1\n  }\n}\n"],"mappings":";AAOO,IAAM,yBAAN,MAAM,wBAAuB;AAAA,EAKlC,YAAY,QAAgB,YAAqB,MAAM,oBAA4B,KAAK;AACtF,QAAI,oBAAoB,KAAK,SAAS,GAAG;AACvC,YAAM,IAAI,MAAM,yEAAyE;AAAA,IAC3F;AAEA,SAAK,SAAS;AACd,SAAK,YAAY;AACjB,SAAK,oBAAoB;AAAA,EAC3B;AAAA,EAEA,qBAAqB,UAA0B;AAC7C,QAAI,CAAC,KAAK,WAAW;AACnB,aAAO,KAAK,IAAI,CAAC,KAAK,mBAAmB,KAAK,IAAI,KAAK,oBAAoB,KAAK,SAAS,GAAG,QAAQ,CAAC;AAAA,IACvG;AACA,QAAI,YAAY,KAAK,QAAQ;AAC3B,aAAO,WAAW,KAAK;AAAA,IACzB;AACA,QAAI,WAAW,GAAG;AAChB,aAAO,KAAK,SAAU,KAAK,IAAI,QAAQ,IAAI,KAAK;AAAA,IAClD;AACA,WAAO;AAAA,EACT;AAAA,EAEA,OAAO,cAAc,UAA0B;AAC7C,WAAO,WAAW,wBAAuB,UAAU,QAAQ;AAAA,EAC7D;AAAA,EAEA,OAAO,UAAU,UAA0B;AACzC,WAAO,KAAK,MAAM,QAAQ,IAAI;AAAA,EAChC;AAAA;AAAA;AAAA;AAAA,EAKA,uBAAuB,UAAkB,QAAgB,WAA8B;AACrF,QAAI,CAAC,KAAK,cAAc,WAAW,CAAC,KAAK,qBAAqB,WAAW,KAAK,oBAAoB,KAAK,SAAS,IAAI;AAClH,YAAM,IAAI,MAAM,gDAAgD;AAAA,IAClE;AAEA,UAAM,mBAAoB,cAAc,KAAK,WAAW;AACxD,UAAM,oBAAqB,cAAc,MAAM,SAAS;AAExD,QAAI,CAAC,KAAK,cAAc,oBAAoB,oBAAoB;AAC9D,aAAO;AAAA,IACT;AAEA,QAAI,cAAc,IAAI;AACpB,aAAO,KAAK,uBAAuB,QAAQ,UAAU,CAAC;AAAA,IACxD;AAEA,eAAW,KAAK,qBAAqB,QAAQ;AAC7C,aAAS,KAAK,qBAAqB,MAAM;AAEzC,QAAI,YAAY,SAAS,YAAY;AACrC,QAAI,WAAW,GAAG;AAChB,iBAAW,KAAK,SAAU,KAAK,IAAI,QAAQ,IAAI,KAAK,SAAU;AAAA,IAChE;AAEA,WAAO;AAAA,EACT;AAAA,EAEA,mBAAmB,UAAkB,QAAwB;AAC3D,WAAO,KAAK,uBAAuB,UAAU,QAAQ,CAAC;AAAA,EACxD;AAAA,EAEA,oBAAoB,UAAkB,QAAwB;AAC5D,WAAO,KAAK,uBAAuB,UAAU,QAAQ,EAAE;AAAA,EACzD;AAAA,EAEA,YAAY,UAAkB,QAAwB;AACpD,UAAM,kBAAkB,KAAK,mBAAmB,UAAU,MAAM;AAChE,UAAM,mBAAmB,KAAK,oBAAoB,UAAU,MAAM;AAElE,WAAO,KAAK,IAAI,iBAAiB,gBAAgB;AAAA,EACnD;AAAA,EAEA,iBAAiB,UAAkB,QAA2B;AAC5D,UAAM,kBAAkB,KAAK,mBAAmB,UAAU,MAAM;AAChE,UAAM,mBAAmB,KAAK,oBAAoB,UAAU,MAAM;AAClE,WAAO,kBAAkB,mBAAmB,IAAI;AAAA,EAClD;AACF;","names":[]}