@turbox3d/math/lib/base/Vector4.js

Large-scale graphics application math library

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Vector4 = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var Vector4 = exports.Vector4 = /*#__PURE__*/function () {
  function Vector4() {
    var x = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
    var y = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
    var z = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
    var w = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 1;
    (0, _classCallCheck2["default"])(this, Vector4);
    this.isVector4 = true;
    this.x = x;
    this.y = y;
    this.z = z;
    this.w = w;
  }
  return (0, _createClass2["default"])(Vector4, [{
    key: "width",
    get: function get() {
      return this.z;
    },
    set: function set(value) {
      this.z = value;
    }
  }, {
    key: "height",
    get: function get() {
      return this.w;
    },
    set: function set(value) {
      this.w = value;
    }
  }, {
    key: "set",
    value: function set(x, y, z, w) {
      this.x = x;
      this.y = y;
      this.z = z;
      this.w = w;
      return this;
    }
  }, {
    key: "setScalar",
    value: function setScalar(scalar) {
      this.x = scalar;
      this.y = scalar;
      this.z = scalar;
      this.w = scalar;
      return this;
    }
  }, {
    key: "setX",
    value: function setX(x) {
      this.x = x;
      return this;
    }
  }, {
    key: "setY",
    value: function setY(y) {
      this.y = y;
      return this;
    }
  }, {
    key: "setZ",
    value: function setZ(z) {
      this.z = z;
      return this;
    }
  }, {
    key: "setW",
    value: function setW(w) {
      this.w = w;
      return this;
    }
  }, {
    key: "setComponent",
    value: function setComponent(index, value) {
      switch (index) {
        case 0:
          this.x = value;
          break;
        case 1:
          this.y = value;
          break;
        case 2:
          this.z = value;
          break;
        case 3:
          this.w = value;
          break;
        default:
          throw new Error("index is out of range: ".concat(index));
      }
      return this;
    }
  }, {
    key: "getComponent",
    value: function getComponent(index) {
      switch (index) {
        case 0:
          return this.x;
        case 1:
          return this.y;
        case 2:
          return this.z;
        case 3:
          return this.w;
        default:
          throw new Error("index is out of range: ".concat(index));
      }
    }
  }, {
    key: "clone",
    value: function clone() {
      return new Vector4(this.x, this.y, this.z, this.w);
    }
  }, {
    key: "copy",
    value: function copy(v) {
      this.x = v.x;
      this.y = v.y;
      this.z = v.z;
      this.w = v.w !== undefined ? v.w : 1;
      return this;
    }
  }, {
    key: "add",
    value: function add(v) {
      this.x += v.x;
      this.y += v.y;
      this.z += v.z;
      this.w += v.w;
      return this;
    }
  }, {
    key: "addScalar",
    value: function addScalar(s) {
      this.x += s;
      this.y += s;
      this.z += s;
      this.w += s;
      return this;
    }
  }, {
    key: "addVectors",
    value: function addVectors(a, b) {
      this.x = a.x + b.x;
      this.y = a.y + b.y;
      this.z = a.z + b.z;
      this.w = a.w + b.w;
      return this;
    }
  }, {
    key: "addScaledVector",
    value: function addScaledVector(v, s) {
      this.x += v.x * s;
      this.y += v.y * s;
      this.z += v.z * s;
      this.w += v.w * s;
      return this;
    }
  }, {
    key: "sub",
    value: function sub(v) {
      this.x -= v.x;
      this.y -= v.y;
      this.z -= v.z;
      this.w -= v.w;
      return this;
    }
  }, {
    key: "subScalar",
    value: function subScalar(s) {
      this.x -= s;
      this.y -= s;
      this.z -= s;
      this.w -= s;
      return this;
    }
  }, {
    key: "subVectors",
    value: function subVectors(a, b) {
      this.x = a.x - b.x;
      this.y = a.y - b.y;
      this.z = a.z - b.z;
      this.w = a.w - b.w;
      return this;
    }
  }, {
    key: "multiply",
    value: function multiply(v) {
      this.x *= v.x;
      this.y *= v.y;
      this.z *= v.z;
      this.w *= v.w;
      return this;
    }
  }, {
    key: "multiplyScalar",
    value: function multiplyScalar(scalar) {
      this.x *= scalar;
      this.y *= scalar;
      this.z *= scalar;
      this.w *= scalar;
      return this;
    }
  }, {
    key: "applyMatrix4",
    value: function applyMatrix4(m) {
      var x = this.x;
      var y = this.y;
      var z = this.z;
      var w = this.w;
      var e = m.elements;
      this.x = e[0] * x + e[4] * y + e[8] * z + e[12] * w;
      this.y = e[1] * x + e[5] * y + e[9] * z + e[13] * w;
      this.z = e[2] * x + e[6] * y + e[10] * z + e[14] * w;
      this.w = e[3] * x + e[7] * y + e[11] * z + e[15] * w;
      return this;
    }
  }, {
    key: "divideScalar",
    value: function divideScalar(scalar) {
      return this.multiplyScalar(1 / scalar);
    }
  }, {
    key: "setAxisAngleFromQuaternion",
    value: function setAxisAngleFromQuaternion(q) {
      // http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
      // q is assumed to be normalized
      this.w = 2 * Math.acos(q.w);
      var s = Math.sqrt(1 - q.w * q.w);
      if (s < 0.0001) {
        this.x = 1;
        this.y = 0;
        this.z = 0;
      } else {
        this.x = q.x / s;
        this.y = q.y / s;
        this.z = q.z / s;
      }
      return this;
    }
  }, {
    key: "setAxisAngleFromRotationMatrix",
    value: function setAxisAngleFromRotationMatrix(m) {
      // http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
      // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
      var angle;
      var x;
      var y;
      var z; // variables for result
      var epsilon = 0.01; // margin to allow for rounding errors
      var epsilon2 = 0.1; // margin to distinguish between 0 and 180 degrees
      var te = m.elements;
      var m11 = te[0];
      var m12 = te[4];
      var m13 = te[8];
      var m21 = te[1];
      var m22 = te[5];
      var m23 = te[9];
      var m31 = te[2];
      var m32 = te[6];
      var m33 = te[10];
      if (Math.abs(m12 - m21) < epsilon && Math.abs(m13 - m31) < epsilon && Math.abs(m23 - m32) < epsilon) {
        // singularity found
        // first check for identity matrix which must have +1 for all terms
        // in leading diagonal and zero in other terms
        if (Math.abs(m12 + m21) < epsilon2 && Math.abs(m13 + m31) < epsilon2 && Math.abs(m23 + m32) < epsilon2 && Math.abs(m11 + m22 + m33 - 3) < epsilon2) {
          // this singularity is identity matrix so angle = 0
          this.set(1, 0, 0, 0);
          return this; // zero angle, arbitrary axis
        }
        // otherwise this singularity is angle = 180
        angle = Math.PI;
        var xx = (m11 + 1) / 2;
        var yy = (m22 + 1) / 2;
        var zz = (m33 + 1) / 2;
        var xy = (m12 + m21) / 4;
        var xz = (m13 + m31) / 4;
        var yz = (m23 + m32) / 4;
        if (xx > yy && xx > zz) {
          // m11 is the largest diagonal term
          if (xx < epsilon) {
            x = 0;
            y = 0.707106781;
            z = 0.707106781;
          } else {
            x = Math.sqrt(xx);
            y = xy / x;
            z = xz / x;
          }
        } else if (yy > zz) {
          // m22 is the largest diagonal term
          if (yy < epsilon) {
            x = 0.707106781;
            y = 0;
            z = 0.707106781;
          } else {
            y = Math.sqrt(yy);
            x = xy / y;
            z = yz / y;
          }
        } else {
          // m33 is the largest diagonal term so base result on this
          // eslint-disable-next-line no-lonely-if
          if (zz < epsilon) {
            x = 0.707106781;
            y = 0.707106781;
            z = 0;
          } else {
            z = Math.sqrt(zz);
            x = xz / z;
            y = yz / z;
          }
        }
        this.set(x, y, z, angle);
        return this; // return 180 deg rotation
      }
      // as we have reached here there are no singularities so we can handle normally
      var s = Math.sqrt((m32 - m23) * (m32 - m23) + (m13 - m31) * (m13 - m31) + (m21 - m12) * (m21 - m12)); // used to normalize
      if (Math.abs(s) < 0.001) s = 1;
      // prevent divide by zero, should not happen if matrix is orthogonal and should be
      // caught by singularity test above, but I've left it in just in case
      this.x = (m32 - m23) / s;
      this.y = (m13 - m31) / s;
      this.z = (m21 - m12) / s;
      this.w = Math.acos((m11 + m22 + m33 - 1) / 2);
      return this;
    }
  }, {
    key: "min",
    value: function min(v) {
      this.x = Math.min(this.x, v.x);
      this.y = Math.min(this.y, v.y);
      this.z = Math.min(this.z, v.z);
      this.w = Math.min(this.w, v.w);
      return this;
    }
  }, {
    key: "max",
    value: function max(v) {
      this.x = Math.max(this.x, v.x);
      this.y = Math.max(this.y, v.y);
      this.z = Math.max(this.z, v.z);
      this.w = Math.max(this.w, v.w);
      return this;
    }
  }, {
    key: "clamp",
    value: function clamp(min, max) {
      // assumes min < max, componentwise
      this.x = Math.max(min.x, Math.min(max.x, this.x));
      this.y = Math.max(min.y, Math.min(max.y, this.y));
      this.z = Math.max(min.z, Math.min(max.z, this.z));
      this.w = Math.max(min.w, Math.min(max.w, this.w));
      return this;
    }
  }, {
    key: "clampScalar",
    value: function clampScalar(minVal, maxVal) {
      this.x = Math.max(minVal, Math.min(maxVal, this.x));
      this.y = Math.max(minVal, Math.min(maxVal, this.y));
      this.z = Math.max(minVal, Math.min(maxVal, this.z));
      this.w = Math.max(minVal, Math.min(maxVal, this.w));
      return this;
    }
  }, {
    key: "clampLength",
    value: function clampLength(min, max) {
      var length = this.length;
      return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
    }
  }, {
    key: "floor",
    value: function floor() {
      this.x = Math.floor(this.x);
      this.y = Math.floor(this.y);
      this.z = Math.floor(this.z);
      this.w = Math.floor(this.w);
      return this;
    }
  }, {
    key: "ceil",
    value: function ceil() {
      this.x = Math.ceil(this.x);
      this.y = Math.ceil(this.y);
      this.z = Math.ceil(this.z);
      this.w = Math.ceil(this.w);
      return this;
    }
  }, {
    key: "round",
    value: function round() {
      this.x = Math.round(this.x);
      this.y = Math.round(this.y);
      this.z = Math.round(this.z);
      this.w = Math.round(this.w);
      return this;
    }
  }, {
    key: "roundToZero",
    value: function roundToZero() {
      this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
      this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
      this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
      this.w = this.w < 0 ? Math.ceil(this.w) : Math.floor(this.w);
      return this;
    }
  }, {
    key: "negate",
    value: function negate() {
      this.x = -this.x;
      this.y = -this.y;
      this.z = -this.z;
      this.w = -this.w;
      return this;
    }
  }, {
    key: "dot",
    value: function dot(v) {
      return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
    }
  }, {
    key: "lengthSq",
    get: function get() {
      return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
    }
  }, {
    key: "length",
    get: function get() {
      return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w);
    }
  }, {
    key: "manhattanLength",
    get: function get() {
      return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z) + Math.abs(this.w);
    }
  }, {
    key: "normalize",
    value: function normalize() {
      return this.divideScalar(this.length || 1);
    }
  }, {
    key: "setLength",
    value: function setLength(length) {
      return this.normalize().multiplyScalar(length);
    }
  }, {
    key: "lerp",
    value: function lerp(v, alpha) {
      this.x += (v.x - this.x) * alpha;
      this.y += (v.y - this.y) * alpha;
      this.z += (v.z - this.z) * alpha;
      this.w += (v.w - this.w) * alpha;
      return this;
    }
  }, {
    key: "lerpVectors",
    value: function lerpVectors(v1, v2, alpha) {
      this.x = v1.x + (v2.x - v1.x) * alpha;
      this.y = v1.y + (v2.y - v1.y) * alpha;
      this.z = v1.z + (v2.z - v1.z) * alpha;
      this.w = v1.w + (v2.w - v1.w) * alpha;
      return this;
    }
  }, {
    key: "equals",
    value: function equals(v) {
      return v.x === this.x && v.y === this.y && v.z === this.z && v.w === this.w;
    }
  }, {
    key: "fromArray",
    value: function fromArray(array) {
      var offset = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      this.x = array[offset];
      this.y = array[offset + 1];
      this.z = array[offset + 2];
      this.w = array[offset + 3];
      return this;
    }
  }, {
    key: "toArray",
    value: function toArray() {
      var array = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
      var offset = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      array[offset] = this.x;
      array[offset + 1] = this.y;
      array[offset + 2] = this.z;
      array[offset + 3] = this.w;
      return array;
    }
  }, {
    key: "random",
    value: function random() {
      this.x = Math.random();
      this.y = Math.random();
      this.z = Math.random();
      this.w = Math.random();
      return this;
    }
  }]);
}();