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- "use strict";
- function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.create = create;
- exports.clone = clone;
- exports.fromValues = fromValues;
- exports.copy = copy;
- exports.set = set;
- exports.add = add;
- exports.subtract = subtract;
- exports.multiply = multiply;
- exports.divide = divide;
- exports.ceil = ceil;
- exports.floor = floor;
- exports.min = min;
- exports.max = max;
- exports.round = round;
- exports.scale = scale;
- exports.scaleAndAdd = scaleAndAdd;
- exports.distance = distance;
- exports.squaredDistance = squaredDistance;
- exports.length = length;
- exports.squaredLength = squaredLength;
- exports.negate = negate;
- exports.inverse = inverse;
- exports.normalize = normalize;
- exports.dot = dot;
- exports.cross = cross;
- exports.lerp = lerp;
- exports.random = random;
- exports.transformMat2 = transformMat2;
- exports.transformMat2d = transformMat2d;
- exports.transformMat3 = transformMat3;
- exports.transformMat4 = transformMat4;
- exports.rotate = rotate;
- exports.angle = angle;
- exports.zero = zero;
- exports.str = str;
- exports.exactEquals = exactEquals;
- exports.equals = equals;
- exports.forEach = exports.sqrLen = exports.sqrDist = exports.dist = exports.div = exports.mul = exports.sub = exports.len = void 0;
- var glMatrix = _interopRequireWildcard(require("./common.js"));
- function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
- function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
- /**
- * 2 Dimensional Vector
- * @module vec2
- */
- /**
- * Creates a new, empty vec2
- *
- * @returns {vec2} a new 2D vector
- */
- function create() {
- var out = new glMatrix.ARRAY_TYPE(2);
- if (glMatrix.ARRAY_TYPE != Float32Array) {
- out[0] = 0;
- out[1] = 0;
- }
- return out;
- }
- /**
- * Creates a new vec2 initialized with values from an existing vector
- *
- * @param {ReadonlyVec2} a vector to clone
- * @returns {vec2} a new 2D vector
- */
- function clone(a) {
- var out = new glMatrix.ARRAY_TYPE(2);
- out[0] = a[0];
- out[1] = a[1];
- return out;
- }
- /**
- * Creates a new vec2 initialized with the given values
- *
- * @param {Number} x X component
- * @param {Number} y Y component
- * @returns {vec2} a new 2D vector
- */
- function fromValues(x, y) {
- var out = new glMatrix.ARRAY_TYPE(2);
- out[0] = x;
- out[1] = y;
- return out;
- }
- /**
- * Copy the values from one vec2 to another
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the source vector
- * @returns {vec2} out
- */
- function copy(out, a) {
- out[0] = a[0];
- out[1] = a[1];
- return out;
- }
- /**
- * Set the components of a vec2 to the given values
- *
- * @param {vec2} out the receiving vector
- * @param {Number} x X component
- * @param {Number} y Y component
- * @returns {vec2} out
- */
- function set(out, x, y) {
- out[0] = x;
- out[1] = y;
- return out;
- }
- /**
- * Adds two vec2's
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec2} out
- */
- function add(out, a, b) {
- out[0] = a[0] + b[0];
- out[1] = a[1] + b[1];
- return out;
- }
- /**
- * Subtracts vector b from vector a
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec2} out
- */
- function subtract(out, a, b) {
- out[0] = a[0] - b[0];
- out[1] = a[1] - b[1];
- return out;
- }
- /**
- * Multiplies two vec2's
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec2} out
- */
- function multiply(out, a, b) {
- out[0] = a[0] * b[0];
- out[1] = a[1] * b[1];
- return out;
- }
- /**
- * Divides two vec2's
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec2} out
- */
- function divide(out, a, b) {
- out[0] = a[0] / b[0];
- out[1] = a[1] / b[1];
- return out;
- }
- /**
- * Math.ceil the components of a vec2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a vector to ceil
- * @returns {vec2} out
- */
- function ceil(out, a) {
- out[0] = Math.ceil(a[0]);
- out[1] = Math.ceil(a[1]);
- return out;
- }
- /**
- * Math.floor the components of a vec2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a vector to floor
- * @returns {vec2} out
- */
- function floor(out, a) {
- out[0] = Math.floor(a[0]);
- out[1] = Math.floor(a[1]);
- return out;
- }
- /**
- * Returns the minimum of two vec2's
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec2} out
- */
- function min(out, a, b) {
- out[0] = Math.min(a[0], b[0]);
- out[1] = Math.min(a[1], b[1]);
- return out;
- }
- /**
- * Returns the maximum of two vec2's
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec2} out
- */
- function max(out, a, b) {
- out[0] = Math.max(a[0], b[0]);
- out[1] = Math.max(a[1], b[1]);
- return out;
- }
- /**
- * Math.round the components of a vec2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a vector to round
- * @returns {vec2} out
- */
- function round(out, a) {
- out[0] = Math.round(a[0]);
- out[1] = Math.round(a[1]);
- return out;
- }
- /**
- * Scales a vec2 by a scalar number
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the vector to scale
- * @param {Number} b amount to scale the vector by
- * @returns {vec2} out
- */
- function scale(out, a, b) {
- out[0] = a[0] * b;
- out[1] = a[1] * b;
- return out;
- }
- /**
- * Adds two vec2's after scaling the second operand by a scalar value
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @param {Number} scale the amount to scale b by before adding
- * @returns {vec2} out
- */
- function scaleAndAdd(out, a, b, scale) {
- out[0] = a[0] + b[0] * scale;
- out[1] = a[1] + b[1] * scale;
- return out;
- }
- /**
- * Calculates the euclidian distance between two vec2's
- *
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {Number} distance between a and b
- */
- function distance(a, b) {
- var x = b[0] - a[0],
- y = b[1] - a[1];
- return Math.hypot(x, y);
- }
- /**
- * Calculates the squared euclidian distance between two vec2's
- *
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {Number} squared distance between a and b
- */
- function squaredDistance(a, b) {
- var x = b[0] - a[0],
- y = b[1] - a[1];
- return x * x + y * y;
- }
- /**
- * Calculates the length of a vec2
- *
- * @param {ReadonlyVec2} a vector to calculate length of
- * @returns {Number} length of a
- */
- function length(a) {
- var x = a[0],
- y = a[1];
- return Math.hypot(x, y);
- }
- /**
- * Calculates the squared length of a vec2
- *
- * @param {ReadonlyVec2} a vector to calculate squared length of
- * @returns {Number} squared length of a
- */
- function squaredLength(a) {
- var x = a[0],
- y = a[1];
- return x * x + y * y;
- }
- /**
- * Negates the components of a vec2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a vector to negate
- * @returns {vec2} out
- */
- function negate(out, a) {
- out[0] = -a[0];
- out[1] = -a[1];
- return out;
- }
- /**
- * Returns the inverse of the components of a vec2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a vector to invert
- * @returns {vec2} out
- */
- function inverse(out, a) {
- out[0] = 1.0 / a[0];
- out[1] = 1.0 / a[1];
- return out;
- }
- /**
- * Normalize a vec2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a vector to normalize
- * @returns {vec2} out
- */
- function normalize(out, a) {
- var x = a[0],
- y = a[1];
- var len = x * x + y * y;
- if (len > 0) {
- //TODO: evaluate use of glm_invsqrt here?
- len = 1 / Math.sqrt(len);
- }
- out[0] = a[0] * len;
- out[1] = a[1] * len;
- return out;
- }
- /**
- * Calculates the dot product of two vec2's
- *
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {Number} dot product of a and b
- */
- function dot(a, b) {
- return a[0] * b[0] + a[1] * b[1];
- }
- /**
- * Computes the cross product of two vec2's
- * Note that the cross product must by definition produce a 3D vector
- *
- * @param {vec3} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @returns {vec3} out
- */
- function cross(out, a, b) {
- var z = a[0] * b[1] - a[1] * b[0];
- out[0] = out[1] = 0;
- out[2] = z;
- return out;
- }
- /**
- * Performs a linear interpolation between two vec2's
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the first operand
- * @param {ReadonlyVec2} b the second operand
- * @param {Number} t interpolation amount, in the range [0-1], between the two inputs
- * @returns {vec2} out
- */
- function lerp(out, a, b, t) {
- var ax = a[0],
- ay = a[1];
- out[0] = ax + t * (b[0] - ax);
- out[1] = ay + t * (b[1] - ay);
- return out;
- }
- /**
- * Generates a random vector with the given scale
- *
- * @param {vec2} out the receiving vector
- * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
- * @returns {vec2} out
- */
- function random(out, scale) {
- scale = scale || 1.0;
- var r = glMatrix.RANDOM() * 2.0 * Math.PI;
- out[0] = Math.cos(r) * scale;
- out[1] = Math.sin(r) * scale;
- return out;
- }
- /**
- * Transforms the vec2 with a mat2
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the vector to transform
- * @param {ReadonlyMat2} m matrix to transform with
- * @returns {vec2} out
- */
- function transformMat2(out, a, m) {
- var x = a[0],
- y = a[1];
- out[0] = m[0] * x + m[2] * y;
- out[1] = m[1] * x + m[3] * y;
- return out;
- }
- /**
- * Transforms the vec2 with a mat2d
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the vector to transform
- * @param {ReadonlyMat2d} m matrix to transform with
- * @returns {vec2} out
- */
- function transformMat2d(out, a, m) {
- var x = a[0],
- y = a[1];
- out[0] = m[0] * x + m[2] * y + m[4];
- out[1] = m[1] * x + m[3] * y + m[5];
- return out;
- }
- /**
- * Transforms the vec2 with a mat3
- * 3rd vector component is implicitly '1'
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the vector to transform
- * @param {ReadonlyMat3} m matrix to transform with
- * @returns {vec2} out
- */
- function transformMat3(out, a, m) {
- var x = a[0],
- y = a[1];
- out[0] = m[0] * x + m[3] * y + m[6];
- out[1] = m[1] * x + m[4] * y + m[7];
- return out;
- }
- /**
- * Transforms the vec2 with a mat4
- * 3rd vector component is implicitly '0'
- * 4th vector component is implicitly '1'
- *
- * @param {vec2} out the receiving vector
- * @param {ReadonlyVec2} a the vector to transform
- * @param {ReadonlyMat4} m matrix to transform with
- * @returns {vec2} out
- */
- function transformMat4(out, a, m) {
- var x = a[0];
- var y = a[1];
- out[0] = m[0] * x + m[4] * y + m[12];
- out[1] = m[1] * x + m[5] * y + m[13];
- return out;
- }
- /**
- * Rotate a 2D vector
- * @param {vec2} out The receiving vec2
- * @param {ReadonlyVec2} a The vec2 point to rotate
- * @param {ReadonlyVec2} b The origin of the rotation
- * @param {Number} rad The angle of rotation in radians
- * @returns {vec2} out
- */
- function rotate(out, a, b, rad) {
- //Translate point to the origin
- var p0 = a[0] - b[0],
- p1 = a[1] - b[1],
- sinC = Math.sin(rad),
- cosC = Math.cos(rad); //perform rotation and translate to correct position
- out[0] = p0 * cosC - p1 * sinC + b[0];
- out[1] = p0 * sinC + p1 * cosC + b[1];
- return out;
- }
- /**
- * Get the angle between two 2D vectors
- * @param {ReadonlyVec2} a The first operand
- * @param {ReadonlyVec2} b The second operand
- * @returns {Number} The angle in radians
- */
- function angle(a, b) {
- var x1 = a[0],
- y1 = a[1],
- x2 = b[0],
- y2 = b[1],
- // mag is the product of the magnitudes of a and b
- mag = Math.sqrt(x1 * x1 + y1 * y1) * Math.sqrt(x2 * x2 + y2 * y2),
- // mag &&.. short circuits if mag == 0
- cosine = mag && (x1 * x2 + y1 * y2) / mag; // Math.min(Math.max(cosine, -1), 1) clamps the cosine between -1 and 1
- return Math.acos(Math.min(Math.max(cosine, -1), 1));
- }
- /**
- * Set the components of a vec2 to zero
- *
- * @param {vec2} out the receiving vector
- * @returns {vec2} out
- */
- function zero(out) {
- out[0] = 0.0;
- out[1] = 0.0;
- return out;
- }
- /**
- * Returns a string representation of a vector
- *
- * @param {ReadonlyVec2} a vector to represent as a string
- * @returns {String} string representation of the vector
- */
- function str(a) {
- return "vec2(" + a[0] + ", " + a[1] + ")";
- }
- /**
- * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
- *
- * @param {ReadonlyVec2} a The first vector.
- * @param {ReadonlyVec2} b The second vector.
- * @returns {Boolean} True if the vectors are equal, false otherwise.
- */
- function exactEquals(a, b) {
- return a[0] === b[0] && a[1] === b[1];
- }
- /**
- * Returns whether or not the vectors have approximately the same elements in the same position.
- *
- * @param {ReadonlyVec2} a The first vector.
- * @param {ReadonlyVec2} b The second vector.
- * @returns {Boolean} True if the vectors are equal, false otherwise.
- */
- function equals(a, b) {
- var a0 = a[0],
- a1 = a[1];
- var b0 = b[0],
- b1 = b[1];
- return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1));
- }
- /**
- * Alias for {@link vec2.length}
- * @function
- */
- var len = length;
- /**
- * Alias for {@link vec2.subtract}
- * @function
- */
- exports.len = len;
- var sub = subtract;
- /**
- * Alias for {@link vec2.multiply}
- * @function
- */
- exports.sub = sub;
- var mul = multiply;
- /**
- * Alias for {@link vec2.divide}
- * @function
- */
- exports.mul = mul;
- var div = divide;
- /**
- * Alias for {@link vec2.distance}
- * @function
- */
- exports.div = div;
- var dist = distance;
- /**
- * Alias for {@link vec2.squaredDistance}
- * @function
- */
- exports.dist = dist;
- var sqrDist = squaredDistance;
- /**
- * Alias for {@link vec2.squaredLength}
- * @function
- */
- exports.sqrDist = sqrDist;
- var sqrLen = squaredLength;
- /**
- * Perform some operation over an array of vec2s.
- *
- * @param {Array} a the array of vectors to iterate over
- * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
- * @param {Number} offset Number of elements to skip at the beginning of the array
- * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
- * @param {Function} fn Function to call for each vector in the array
- * @param {Object} [arg] additional argument to pass to fn
- * @returns {Array} a
- * @function
- */
- exports.sqrLen = sqrLen;
- var forEach = function () {
- var vec = create();
- return function (a, stride, offset, count, fn, arg) {
- var i, l;
- if (!stride) {
- stride = 2;
- }
- if (!offset) {
- offset = 0;
- }
- if (count) {
- l = Math.min(count * stride + offset, a.length);
- } else {
- l = a.length;
- }
- for (i = offset; i < l; i += stride) {
- vec[0] = a[i];
- vec[1] = a[i + 1];
- fn(vec, vec, arg);
- a[i] = vec[0];
- a[i + 1] = vec[1];
- }
- return a;
- };
- }();
- exports.forEach = forEach;
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