@thednp/bezier-easing/dist/bezier-easing.mjs.map

🍬 A Typescript based cubic-bezier easing functions factory for KUTE.js based on UnitBezier

{"version":3,"file":"bezier-easing.mjs","names":[],"sources":["../package.json","../src/index.ts"],"sourcesContent":["{\n  \"name\": \"@thednp/bezier-easing\",\n  \"version\": \"1.0.14\",\n  \"description\": \"🍬 A Typescript based cubic-bezier easing functions factory for KUTE.js based on UnitBezier\",\n  \"homepage\": \"https://github.com/thednp/bezier-easing\",\n  \"author\": \"thednp\",\n  \"license\": \"MIT\",\n  \"main\": \"./dist/bezier-easing.js\",\n  \"module\": \"./dist/bezier-easing.mjs\",\n  \"exports\": {\n    \".\": {\n      \"types\": \"./dist/bezier-easing.d.ts\",\n      \"require\": \"./dist/bezier-easing.cjs\",\n      \"import\": \"./dist/bezier-easing.mjs\"\n    }\n  },\n  \"files\": [\n    \"dist\",\n    \"package.json\",\n    \"README.md\",\n    \"LICENSE\"\n  ],\n  \"bugs\": {\n    \"url\": \"https://github.com/thednp/bezier-easing/issues\"\n  },\n  \"publishConfig\": {\n    \"access\": \"public\",\n    \"registry\": \"https://registry.npmjs.org/\"\n  },\n  \"scripts\": {\n    \"pre-test\": \"pnpm clean-coverage\",\n    \"clean-coverage\": \"rm -rf coverage .nyc_output\",\n    \"test\": \"pnpm pre-test && vitest\",\n    \"test-ui\": \"pnpm pre-test && vitest --ui\",\n    \"format\": \"deno fmt src\",\n    \"lint\": \"pnpm lint:ts && pnpm lint:types\",\n    \"lint:ts\": \"deno lint src\",\n    \"lint:types\": \"tsc --noEmit\",\n    \"fix:ts\": \"deno lint src --fix\",\n    \"build\": \"vite build\",\n    \"prepublishOnly\": \"pnpm update --latest && pnpm format && pnpm lint && pnpm build\"\n  },\n  \"repository\": {\n    \"type\": \"git\",\n    \"url\": \"git+https://github.com/thednp/bezier-easing.git\"\n  },\n  \"keywords\": [\n    \"kute.js\",\n    \"cubic-bezier\",\n    \"cubic-bezier-easing\",\n    \"easing\",\n    \"ease\",\n    \"easing functions\",\n    \"animation engine\",\n    \"animation\",\n    \"animations\",\n    \"typescript\"\n  ],\n  \"devDependencies\": {\n    \"@testing-library/dom\": \"^10.4.1\",\n    \"@types/node\": \"^25.5.0\",\n    \"@vitest/coverage-istanbul\": \"^4.1.2\",\n    \"@vitest/ui\": \"^4.1.2\",\n    \"happy-dom\": \"^20.8.8\",\n    \"typescript\": \"^6.0.2\",\n    \"vite\": \"^8.0.3\",\n    \"vite-plugin-dts\": \"^4.5.4\",\n    \"vite-plugin-strip-comments\": \"^0.0.10\",\n    \"vitest\": \"^4.1.2\"\n  },\n  \"packageManager\": \"pnpm@10.33.0\",\n  \"engines\": {\n    \"node\": \">=20\",\n    \"pnpm\": \">=8.6.0\"\n  }\n}\n","import type { BezierEasingFunction } from \"./easing-function.ts\";\nimport { version } from \"../package.json\";\n\n/**\n * Creates cubic-bezier easing functions for animation engines.\n *\n * @see http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h\n *\n * @class\n */\nexport default class CubicBezier {\n  static version = version;\n  public cx: number;\n  public bx: number;\n  public ax: number;\n  public cy: number;\n  public by: number;\n  public ay: number;\n  /**\n   * @constructor\n   * @param x1 - first point horizontal position\n   * @param y1 - first point vertical position\n   * @param x2 - second point horizontal position\n   * @param y2 - second point vertical position\n   * @param functionName - an optional function name\n   * @returns a new CubicBezier easing function\n   */\n  constructor(\n    x1?: number,\n    y1?: number,\n    x2?: number,\n    y2?: number,\n    functionName?: string,\n  ) {\n    // pre-calculate the polynomial coefficients\n    // First and last control points are implied to be (0.0, 0.0) and (1.0, 1.0)\n    const p1x = x1 || 0;\n    const p1y = y1 || 0;\n    const p2x = x2 || 1;\n    const p2y = y2 || 1;\n    const isNumber = (n: unknown): n is number => typeof n === \"number\";\n    const allNumbers = [x1, y1, x2, y2].every(isNumber);\n    const name = functionName\n      ? functionName\n      : allNumbers\n      ? `cubic-bezier(${[p1x, p1y, p2x, p2y].join(\",\")})`\n      : \"linear\";\n\n    this.cx = 3 * p1x;\n    this.bx = 3 * (p2x - p1x) - this.cx;\n    this.ax = 1 - this.cx - this.bx;\n    this.cy = 3 * p1y;\n    this.by = 3 * (p2y - p1y) - this.cy;\n    this.ay = 1 - this.cy - this.by;\n\n    const BezierEasing = (t: number) => this.sampleCurveY(this.solveCurveX(t));\n\n    // this function needs a name\n    Object.defineProperty(BezierEasing, \"name\", { writable: true });\n    BezierEasing.name = name;\n\n    return BezierEasing as BezierEasingFunction;\n  }\n\n  /**\n   * @param t - progress [0-1]\n   * @return - sampled X value\n   */\n  sampleCurveX(t: number) {\n    return ((this.ax * t + this.bx) * t + this.cx) * t;\n  }\n\n  /**\n   * @param t - progress [0-1]\n   * @return - sampled Y value\n   */\n  sampleCurveY(t: number) {\n    return ((this.ay * t + this.by) * t + this.cy) * t;\n  }\n\n  /**\n   * @param t - progress [0-1]\n   * @return - sampled curve derivative X value\n   */\n  sampleCurveDerivativeX(t: number) {\n    return (3 * this.ax * t + 2 * this.bx) * t + this.cx;\n  }\n\n  /**\n   * @param x - progress [0-1]\n   * @return - solved curve X value\n   */\n  solveCurveX(x: number) {\n    // Set Precision\n    const epsilon = 1e-6;\n\n    // Skip values out of range\n    if (x <= 0) return 0;\n    if (x >= 1) return 1;\n\n    let t2 = x;\n    let x2 = 0;\n    let d2 = 0;\n\n    // First try a few iterations of Newton's method\n    // -- usually very fast.\n    for (let i = 0; i < 8; i += 1) {\n      x2 = this.sampleCurveX(t2) - x;\n      if (Math.abs(x2) < epsilon) return t2;\n      d2 = this.sampleCurveDerivativeX(t2);\n      /* istanbul ignore next @preserve */\n      if (Math.abs(d2) < epsilon) break;\n      t2 -= x2 / d2;\n    }\n\n    // No solution found - use bi-section\n    let t0 = 0;\n    let t1 = 1;\n    t2 = x;\n\n    while (t0 < t1) {\n      x2 = this.sampleCurveX(t2);\n      if (Math.abs(x2 - x) < epsilon) return t2;\n      if (x > x2) t0 = t2;\n      else t1 = t2;\n\n      t2 = (t1 - t0) * 0.5 + t0;\n    }\n\n    // Give up\n    /* istanbul ignore next @preserve */\n    return t2;\n  }\n}\n"],"mappings":";kBCIiB,IAAjB,MAA+B;CAC9B,OAAA,UAAA;CACC;CACD;CACC;CACA;CACF;CACE;CAEA,YACA,GACA,GACA,GACA,GACE,GACA;EAGA,IAAE,IAAU,KAAC,GACX,IAAU,KAAC,GACX,IAAM,KAAA,GACN,IAAU,KAAI,GAElB,IAAW;GAAA;GAAA;GAAA;GAAA;GAAA,CAAA,OADT,MAAA,OAAA,KAAA,SACS,EACJ,IAAM,MAEP,IACA,gBAAO;GAAA;GAAA;GAAA;GAAA;GAAA,CAAA,KAAA,IAAA,CAAA,KACX;AAOA,EALA,KAAG,KAAI,IAAA,GACP,KAAG,KAAM,KAAI,IAAK,KAAQ,KAAO,IACjC,KAAK,KAAK,IAAI,KAAK,KAAA,KAAA,IACnB,KAAK,KAAK,IAAI,GACd,KAAK,KAAK,KAAK,IAAI,KAAA,KAAA,IACnB,KAAK,KAAK,IAAI,KAAK,KAAA,KAAA;EAEnB,IAAM,KAAgB,MAAc,KAAK,aAAU,KAAA,YAAA,EAAA,CAAA;SAGnD,OAAI,eAAA,GAAA,QAAA,EAAA,UAAA,IAAA,CAAA,EACJ,EAAW,OAAS;;CAMtB,aAAa,GAAM;AACjB,WAAS,KAAK,KAAK,IAAE,KAAO,MAAK,IAAE,KAAA,MAAA;;;AAKnC,WAAQ,KAAA,KAAS,IAAM,KAAE,MAAA,IAAA,KAAA,MAAA;;CAI3B,uBAAsB,GAAG;AACzB,UAAA,IAAA,KAAA,KAAA,IAAA,IAAA,KAAA,MAAA,IAAA,KAAA;;CAIA,YAAY,GAAW;EAEvB,IAAA,IAAgB;;AAId,MAAA,KAAA,EAAA,QAAA;EAEA,IAAE,IAAO,GACT,IAAA,GACF,IAAA;AAIE,OAAA,IAAA,IAAA,GAAA,IAAA,GAAA,KAAA,GAAA;AAEE,OADA,IAAK,KAAK,aAAa,EAAA,GAAA,GACvB,KAAS,IAAA,EAAO,GAAC,EAAM,QAAY;AAGrC,OAFA,IAAA,KAAA,uBAAA,EAAA,EAEM,KAAK,IAAC,EAAK,GAAI,EAAS;AAChC,QAAA,IAAA;;EAIE,IAAE,IAAO,GACT,IAAA;AAGA,OAFF,IAAA,GAEQ,IAAA,IAAU;AAEd,iCAAC,KAAK,IAAO,IAAI,EAAG,GAAA,EAAA,QAAA;AAItB,GAHM,IAAI,IAAE,IAAO,IACZ,IAAK,GAEZ,KAAQ,IAAE,KAAA,KAAA;;AAKV,SAAM"}