guanyun3d/public/lib/Cesium/Workers/AttributeCompression-0af3c035.js

define([
  'exports',
  './Matrix2-f2da41d4',
  './ComponentDatatype-17b06483',
  './RuntimeError-ffe03243',
  './when-229515d6',
], function (e, t, a, n, r) {
  'use strict';
  var o = {
      SCALAR: 'SCALAR',
      VEC2: 'VEC2',
      VEC3: 'VEC3',
      VEC4: 'VEC4',
      MAT2: 'MAT2',
      MAT3: 'MAT3',
      MAT4: 'MAT4',
      getMathType: function (e) {
        switch (e) {
          case o.SCALAR:
            return Number;
          case o.VEC2:
            return t.Cartesian2;
          case o.VEC3:
            return t.Cartesian3;
          case o.VEC4:
            return t.Cartesian4;
          case o.MAT2:
            return t.Matrix2;
          case o.MAT3:
            return t.Matrix3;
          case o.MAT4:
            return t.Matrix4;
        }
      },
      getNumberOfComponents: function (e) {
        switch (e) {
          case o.SCALAR:
            return 1;
          case o.VEC2:
            return 2;
          case o.VEC3:
            return 3;
          case o.VEC4:
          case o.MAT2:
            return 4;
          case o.MAT3:
            return 9;
          case o.MAT4:
            return 16;
        }
      },
      getGlslType: function (e) {
        switch (e) {
          case o.SCALAR:
            return 'float';
          case o.VEC2:
            return 'vec2';
          case o.VEC3:
            return 'vec3';
          case o.VEC4:
            return 'vec4';
          case o.MAT2:
            return 'mat2';
          case o.MAT3:
            return 'mat3';
          case o.MAT4:
            return 'mat4';
        }
      },
    },
    c = Object.freeze(o),
    s = 1 / 256,
    u = {
      octEncodeInRange: function (e, t, n) {
        if (
          ((n.x = e.x / (Math.abs(e.x) + Math.abs(e.y) + Math.abs(e.z))),
          (n.y = e.y / (Math.abs(e.x) + Math.abs(e.y) + Math.abs(e.z))),
          e.z < 0)
        ) {
          var r = n.x,
            o = n.y;
          (n.x = (1 - Math.abs(o)) * a.CesiumMath.signNotZero(r)),
            (n.y = (1 - Math.abs(r)) * a.CesiumMath.signNotZero(o));
        }
        return (n.x = a.CesiumMath.toSNorm(n.x, t)), (n.y = a.CesiumMath.toSNorm(n.y, t)), n;
      },
      octEncode: function (e, t) {
        return u.octEncodeInRange(e, 255, t);
      },
    },
    i = new t.Cartesian2(),
    C = new Uint8Array(1);
  function M(e) {
    return (C[0] = e), C[0];
  }
  (u.octEncodeToCartesian4 = function (e, t) {
    return (
      u.octEncodeInRange(e, 65535, i),
      (t.x = M(i.x * s)),
      (t.y = M(i.x)),
      (t.z = M(i.y * s)),
      (t.w = M(i.y)),
      t
    );
  }),
    (u.octDecodeInRange = function (e, n, r, o) {
      if (
        ((o.x = a.CesiumMath.fromSNorm(e, r)),
        (o.y = a.CesiumMath.fromSNorm(n, r)),
        (o.z = 1 - (Math.abs(o.x) + Math.abs(o.y))),
        o.z < 0)
      ) {
        var c = o.x;
        (o.x = (1 - Math.abs(o.y)) * a.CesiumMath.signNotZero(c)),
          (o.y = (1 - Math.abs(c)) * a.CesiumMath.signNotZero(o.y));
      }
      return t.Cartesian3.normalize(o, o);
    }),
    (u.octDecode = function (e, t, a) {
      return u.octDecodeInRange(e, t, 255, a);
    }),
    (u.octDecodeFromCartesian4 = function (e, t) {
      var a = 256 * e.x + e.y,
        n = 256 * e.z + e.w;
      return u.octDecodeInRange(a, n, 65535, t);
    }),
    (u.octPackFloat = function (e) {
      return 256 * e.x + e.y;
    });
  var f = new t.Cartesian2();
  function m(e) {
    return (e >> 1) ^ -(1 & e);
  }
  (u.octEncodeFloat = function (e) {
    return u.octEncode(e, f), u.octPackFloat(f);
  }),
    (u.octDecodeFloat = function (e, t) {
      var a = e / 256,
        n = Math.floor(a),
        r = 256 * (a - n);
      return u.octDecode(n, r, t);
    }),
    (u.octPack = function (e, t, a, n) {
      var r = u.octEncodeFloat(e),
        o = u.octEncodeFloat(t),
        c = u.octEncode(a, f);
      return (n.x = 65536 * c.x + r), (n.y = 65536 * c.y + o), n;
    }),
    (u.octUnpack = function (e, t, a, n) {
      var r = e.x / 65536,
        o = Math.floor(r),
        c = 65536 * (r - o);
      r = e.y / 65536;
      var s = Math.floor(r),
        i = 65536 * (r - s);
      u.octDecodeFloat(c, t), u.octDecodeFloat(i, a), u.octDecode(o, s, n);
    }),
    (u.compressTextureCoordinates = function (e) {
      return 4096 * ((4095 * e.x) | 0) + ((4095 * e.y) | 0);
    }),
    (u.decompressTextureCoordinates = function (e, t) {
      var a = e / 4096,
        n = Math.floor(a);
      return (t.x = n / 4095), (t.y = (e - 4096 * n) / 4095), t;
    }),
    (u.zigZagDeltaDecode = function (e, t, a) {
      for (var n = e.length, o = 0, c = 0, s = 0, u = 0; u < n; ++u)
        (o += m(e[u])),
          (c += m(t[u])),
          (e[u] = o),
          (t[u] = c),
          r.defined(a) && ((s += m(a[u])), (a[u] = s));
    }),
    (u.dequantize = function (e, t, n, r) {
      var o,
        s = c.getNumberOfComponents(n);
      switch (t) {
        case a.ComponentDatatype.BYTE:
          o = 127;
          break;
        case a.ComponentDatatype.UNSIGNED_BYTE:
          o = 255;
          break;
        case a.ComponentDatatype.SHORT:
          o = 32767;
          break;
        case a.ComponentDatatype.UNSIGNED_SHORT:
          o = 65535;
          break;
        case a.ComponentDatatype.INT:
          o = 2147483647;
          break;
        case a.ComponentDatatype.UNSIGNED_INT:
          o = 4294967295;
      }
      for (var u = new Float32Array(r * s), i = 0; i < r; i++)
        for (var C = 0; C < s; C++) {
          var M = i * s + C;
          u[M] = Math.max(e[M] / o, -1);
        }
      return u;
    }),
    (e.AttributeCompression = u);
});