John Messerly
77e62cc7fb
naturally, lots of things to iterate on, but this expresses the key idea (per-library ES6 symbols for privacy). R=vsm@google.com Review URL: https://codereview.chromium.org/963343002
453 lines
16 KiB
JavaScript
453 lines
16 KiB
JavaScript
var math;
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(function(exports) {
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'use strict';
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let E = 2.718281828459045;
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let LN10 = 2.302585092994046;
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let LN2 = 0.6931471805599453;
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let LOG2E = 1.4426950408889634;
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let LOG10E = 0.4342944819032518;
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let PI = 3.141592653589793;
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let SQRT1_2 = 0.7071067811865476;
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let SQRT2 = 1.4142135623730951;
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// Function min: (num, num) → num
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function min(a, b) {
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if (!dart.is(a, core.num))
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throw new core.ArgumentError(a);
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if (!dart.is(b, core.num))
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throw new core.ArgumentError(b);
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if (dart.notNull(a) > dart.notNull(b))
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return b;
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if (dart.notNull(a) < dart.notNull(b))
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return a;
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if (typeof b == number) {
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if (typeof a == number) {
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if (a === 0.0) {
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return (a + b) * a * b;
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}
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}
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if (dart.notNull(dart.notNull(a === 0) && dart.notNull(b.isNegative)) || dart.notNull(b.isNaN))
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return b;
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return a;
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}
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return a;
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}
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// Function max: (num, num) → num
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function max(a, b) {
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if (!dart.is(a, core.num))
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throw new core.ArgumentError(a);
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if (!dart.is(b, core.num))
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throw new core.ArgumentError(b);
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if (dart.notNull(a) > dart.notNull(b))
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return a;
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if (dart.notNull(a) < dart.notNull(b))
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return b;
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if (typeof b == number) {
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if (typeof a == number) {
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if (a === 0.0) {
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return a + b;
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}
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}
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if (b.isNaN)
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return b;
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return a;
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}
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if (dart.notNull(b === 0) && dart.notNull(a.isNegative))
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return b;
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return a;
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}
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// Function atan2: (num, num) → double
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function atan2(a, b) {
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return Math.atan2(_js_helper.checkNum(a), _js_helper.checkNum(b));
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}
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// Function pow: (num, num) → num
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function pow(x, exponent) {
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_js_helper.checkNum(x);
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_js_helper.checkNum(exponent);
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return Math.pow(x, exponent);
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}
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// Function sin: (num) → double
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function sin(x) {
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return Math.sin(_js_helper.checkNum(x));
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}
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// Function cos: (num) → double
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function cos(x) {
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return Math.cos(_js_helper.checkNum(x));
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}
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// Function tan: (num) → double
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function tan(x) {
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return Math.tan(_js_helper.checkNum(x));
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}
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// Function acos: (num) → double
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function acos(x) {
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return Math.acos(_js_helper.checkNum(x));
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}
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// Function asin: (num) → double
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function asin(x) {
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return Math.asin(_js_helper.checkNum(x));
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}
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// Function atan: (num) → double
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function atan(x) {
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return Math.atan(_js_helper.checkNum(x));
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}
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// Function sqrt: (num) → double
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function sqrt(x) {
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return Math.sqrt(_js_helper.checkNum(x));
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}
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// Function exp: (num) → double
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function exp(x) {
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return Math.exp(_js_helper.checkNum(x));
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}
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// Function log: (num) → double
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function log(x) {
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return Math.log(_js_helper.checkNum(x));
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}
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let _POW2_32 = 4294967296;
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class _JSRandom extends dart.Object {
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_JSRandom() {
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}
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nextInt(max) {
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if (dart.notNull(max <= 0) || dart.notNull(max > _POW2_32)) {
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throw new core.RangeError(`max must be in range 0 < max ≤ 2^32, was ${max}`);
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}
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return Math.random() * max >>> 0;
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}
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nextDouble() {
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return Math.random();
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}
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nextBool() {
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return Math.random() < 0.5;
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}
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}
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let _lo = Symbol('_lo');
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let _hi = Symbol('_hi');
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let _nextState = Symbol('_nextState');
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class _Random extends dart.Object {
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_Random(seed) {
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this[_lo] = 0;
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this[_hi] = 0;
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let empty_seed = 0;
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if (seed < 0) {
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empty_seed = -1;
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}
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do {
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let low = seed & _MASK32;
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seed = ((seed - low) / _POW2_32).truncate();
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let high = seed & _MASK32;
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seed = ((seed - high) / _POW2_32).truncate();
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let tmplow = low << 21;
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let tmphigh = high << 21 | low >> 11;
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tmplow = (~low & _MASK32) + tmplow;
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low = tmplow & _MASK32;
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high = ~high + tmphigh + ((tmplow - low) / 4294967296).truncate() & _MASK32;
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tmphigh = high >> 24;
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tmplow = low >> 24 | high << 8;
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low = tmplow;
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high = tmphigh;
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tmplow = low * 265;
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low = tmplow & _MASK32;
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high = high * 265 + ((tmplow - low) / 4294967296).truncate() & _MASK32;
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tmphigh = high >> 14;
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tmplow = low >> 14 | high << 18;
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low = tmplow;
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high = tmphigh;
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tmplow = low * 21;
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low = tmplow & _MASK32;
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high = high * 21 + ((tmplow - low) / 4294967296).truncate() & _MASK32;
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tmphigh = high >> 28;
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tmplow = low >> 28 | high << 4;
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low = tmplow;
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high = tmphigh;
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tmplow = low << 31;
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tmphigh = high << 31 | low >> 1;
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tmplow = low;
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low = tmplow & _MASK32;
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high = high + tmphigh + ((tmplow - low) / 4294967296).truncate() & _MASK32;
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tmplow = this[_lo] * 1037;
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this[_lo] = tmplow & _MASK32;
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this[_hi] = this[_hi] * 1037 + ((tmplow - this[_lo]) / 4294967296).truncate() & _MASK32;
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this[_lo] = low;
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this[_hi] = high;
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} while (seed !== empty_seed);
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if (dart.notNull(this[_hi] === 0) && dart.notNull(this[_lo] === 0)) {
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this[_lo] = 23063;
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}
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this[_nextState]();
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this[_nextState]();
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this[_nextState]();
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this[_nextState]();
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}
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[_nextState]() {
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let tmpHi = 4294901760 * this[_lo];
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let tmpHiLo = tmpHi & _MASK32;
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let tmpHiHi = tmpHi - tmpHiLo;
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let tmpLo = 55905 * this[_lo];
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let tmpLoLo = tmpLo & _MASK32;
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let tmpLoHi = tmpLo - tmpLoLo;
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let newLo = tmpLoLo + tmpHiLo + this[_hi];
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this[_lo] = newLo & _MASK32;
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let newLoHi = newLo - this[_lo];
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this[_hi] = ((tmpLoHi + tmpHiHi + newLoHi) / _POW2_32).truncate() & _MASK32;
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dart.assert(this[_lo] < _POW2_32);
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dart.assert(this[_hi] < _POW2_32);
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}
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nextInt(max) {
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if (dart.notNull(max <= 0) || dart.notNull(max > _POW2_32)) {
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throw new core.RangeError(`max must be in range 0 < max ≤ 2^32, was ${max}`);
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}
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if ((max & max - 1) === 0) {
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this[_nextState]();
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return this[_lo] & max - 1;
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}
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let rnd32 = null;
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let result = null;
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do {
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this[_nextState]();
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rnd32 = this[_lo];
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result = dart.notNull(rnd32.remainder(max));
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} while (rnd32 - result + max >= _POW2_32);
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return result;
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}
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nextDouble() {
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this[_nextState]();
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let bits26 = this[_lo] & (1 << 26) - 1;
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this[_nextState]();
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let bits27 = this[_lo] & (1 << 27) - 1;
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return (bits26 * _POW2_27_D + bits27) / _POW2_53_D;
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}
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nextBool() {
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this[_nextState]();
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return (this[_lo] & 1) === 0;
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}
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}
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_Random._POW2_53_D = 1.0 * 9007199254740992;
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_Random._POW2_27_D = 1.0 * (1 << 27);
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_Random._MASK32 = 4294967295;
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class _JenkinsSmiHash extends dart.Object {
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static combine(hash, value) {
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hash = 536870911 & hash + value;
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hash = 536870911 & hash + ((524287 & hash) << 10);
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return hash ^ hash >> 6;
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}
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static finish(hash) {
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hash = 536870911 & hash + ((67108863 & hash) << 3);
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hash = hash ^ hash >> 11;
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return 536870911 & hash + ((16383 & hash) << 15);
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}
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static hash2(a, b) {
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return finish(combine(combine(0, dart.as(a, core.int)), dart.as(b, core.int)));
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}
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static hash4(a, b, c, d) {
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return finish(combine(combine(combine(combine(0, dart.as(a, core.int)), dart.as(b, core.int)), dart.as(c, core.int)), dart.as(d, core.int)));
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}
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}
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let Point$ = dart.generic(function(T) {
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class Point extends dart.Object {
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Point(x, y) {
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this.x = x;
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this.y = y;
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}
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toString() {
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return `Point(${this.x}, ${this.y})`;
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}
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['=='](other) {
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if (!dart.is(other, Point))
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return false;
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return dart.notNull(dart.equals(this.x, dart.dload(other, 'x'))) && dart.notNull(dart.equals(this.y, dart.dload(other, 'y')));
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}
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get hashCode() {
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return _JenkinsSmiHash.hash2(this.x.hashCode, this.y.hashCode);
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}
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['+'](other) {
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return new Point(dart.as(this.x['+'](other.x), T), dart.as(this.y['+'](other.y), T));
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}
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['-'](other) {
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return new Point(dart.as(this.x['-'](other.x), T), dart.as(this.y['-'](other.y), T));
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}
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['*'](factor) {
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return new Point(dart.as(this.x['*'](factor), T), dart.as(this.y['*'](factor), T));
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}
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get magnitude() {
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return sqrt(dart.notNull(this.x['*'](this.x)) + dart.notNull(this.y['*'](this.y)));
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}
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distanceTo(other) {
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let dx = this.x['-'](other.x);
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let dy = this.y['-'](other.y);
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return sqrt(dart.notNull(dart.notNull(dx) * dart.notNull(dx)) + dart.notNull(dart.notNull(dy) * dart.notNull(dy)));
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}
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squaredDistanceTo(other) {
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let dx = this.x['-'](other.x);
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let dy = this.y['-'](other.y);
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return dart.as(dart.notNull(dart.notNull(dx) * dart.notNull(dx)) + dart.notNull(dart.notNull(dy) * dart.notNull(dy)), T);
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}
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}
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return Point;
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});
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let Point = Point$(dynamic);
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class Random extends dart.Object {
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Random(seed) {
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if (seed === void 0)
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seed = null;
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return seed === null ? new _JSRandom() : new _Random(seed);
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}
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}
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let _RectangleBase$ = dart.generic(function(T) {
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class _RectangleBase extends dart.Object {
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_RectangleBase() {
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}
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get right() {
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return dart.as(this.left['+'](this.width), T);
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}
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get bottom() {
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return dart.as(this.top['+'](this.height), T);
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}
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toString() {
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return `Rectangle (${this.left}, ${this.top}) ${this.width} x ${this.height}`;
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}
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['=='](other) {
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if (!dart.is(other, Rectangle))
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return false;
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return dart.notNull(dart.notNull(dart.notNull(dart.equals(this.left, dart.dload(other, 'left'))) && dart.notNull(dart.equals(this.top, dart.dload(other, 'top')))) && dart.notNull(dart.equals(this.right, dart.dload(other, 'right')))) && dart.notNull(dart.equals(this.bottom, dart.dload(other, 'bottom')));
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}
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get hashCode() {
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return _JenkinsSmiHash.hash4(this.left.hashCode, this.top.hashCode, this.right.hashCode, this.bottom.hashCode);
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}
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intersection(other) {
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let x0 = max(this.left, other.left);
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let x1 = min(this.left['+'](this.width), other.left['+'](other.width));
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if (dart.notNull(x0) <= dart.notNull(x1)) {
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let y0 = max(this.top, other.top);
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let y1 = min(this.top['+'](this.height), other.top['+'](other.height));
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if (dart.notNull(y0) <= dart.notNull(y1)) {
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return new Rectangle(dart.as(x0, T), dart.as(y0, T), dart.as(dart.notNull(x1) - dart.notNull(x0), T), dart.as(dart.notNull(y1) - dart.notNull(y0), T));
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}
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}
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return null;
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}
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intersects(other) {
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return dart.notNull(dart.notNull(dart.notNull(this.left['<='](dart.notNull(other.left) + dart.notNull(other.width))) && dart.notNull(dart.notNull(other.left) <= dart.notNull(this.left['+'](this.width)))) && dart.notNull(this.top['<='](dart.notNull(other.top) + dart.notNull(other.height)))) && dart.notNull(dart.notNull(other.top) <= dart.notNull(this.top['+'](this.height)));
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}
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boundingBox(other) {
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let right = max(this.left['+'](this.width), other.left['+'](other.width));
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let bottom = max(this.top['+'](this.height), other.top['+'](other.height));
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let left = min(this.left, other.left);
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let top = min(this.top, other.top);
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return new Rectangle(dart.as(left, T), dart.as(top, T), dart.as(dart.notNull(right) - dart.notNull(left), T), dart.as(dart.notNull(bottom) - dart.notNull(top), T));
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}
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containsRectangle(another) {
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return dart.notNull(dart.notNull(dart.notNull(this.left['<='](another.left)) && dart.notNull(dart.notNull(this.left['+'](this.width)) >= dart.notNull(dart.notNull(another.left) + dart.notNull(another.width)))) && dart.notNull(this.top['<='](another.top))) && dart.notNull(dart.notNull(this.top['+'](this.height)) >= dart.notNull(dart.notNull(another.top) + dart.notNull(another.height)));
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}
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containsPoint(another) {
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return dart.notNull(dart.notNull(dart.notNull(core.num['>='](another.x, this.left)) && dart.notNull(dart.notNull(another.x) <= dart.notNull(this.left['+'](this.width)))) && dart.notNull(core.num['>='](another.y, this.top))) && dart.notNull(dart.notNull(another.y) <= dart.notNull(this.top['+'](this.height)));
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}
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get topLeft() {
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return new Point(this.left, this.top);
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}
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get topRight() {
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return new Point(dart.as(this.left['+'](this.width), T), this.top);
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}
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get bottomRight() {
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return new Point(dart.as(this.left['+'](this.width), T), dart.as(this.top['+'](this.height), T));
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}
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get bottomLeft() {
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return new Point(this.left, dart.as(this.top['+'](this.height), T));
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}
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}
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return _RectangleBase;
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});
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let _RectangleBase = _RectangleBase$(dynamic);
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let Rectangle$ = dart.generic(function(T) {
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class Rectangle extends _RectangleBase$(T) {
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Rectangle(left, top, width, height) {
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this.left = left;
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this.top = top;
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this.width = dart.as(width['<'](0) ? dart.notNull(dart.throw_("Unimplemented PrefixExpression: -width")) * 0 : width, T);
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this.height = dart.as(height['<'](0) ? dart.notNull(dart.throw_("Unimplemented PrefixExpression: -height")) * 0 : height, T);
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super._RectangleBase();
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}
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Rectangle$fromPoints(a, b) {
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let left = dart.as(min(a.x, b.x), T);
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let width = dart.as(core.num['-'](max(a.x, b.x), left), T);
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let top = dart.as(min(a.y, b.y), T);
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let height = dart.as(core.num['-'](max(a.y, b.y), top), T);
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return new Rectangle(left, top, width, height);
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}
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}
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dart.defineNamedConstructor(Rectangle, 'fromPoints');
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return Rectangle;
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});
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let Rectangle = Rectangle$(dynamic);
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let _width = Symbol('_width');
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let _height = Symbol('_height');
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let MutableRectangle$ = dart.generic(function(T) {
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class MutableRectangle extends _RectangleBase$(T) {
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MutableRectangle(left, top, width, height) {
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this.left = left;
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this.top = top;
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this[_width] = dart.as(width['<'](0) ? _clampToZero(width) : width, T);
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this[_height] = dart.as(height['<'](0) ? _clampToZero(height) : height, T);
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super._RectangleBase();
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}
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MutableRectangle$fromPoints(a, b) {
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let left = dart.as(min(a.x, b.x), T);
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let width = dart.as(core.num['-'](max(a.x, b.x), left), T);
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let top = dart.as(min(a.y, b.y), T);
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let height = dart.as(core.num['-'](max(a.y, b.y), top), T);
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return new MutableRectangle(left, top, width, height);
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}
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get width() {
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return this[_width];
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}
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set width(width) {
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if (width['<'](0))
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width = dart.as(_clampToZero(width), T);
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this[_width] = width;
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}
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get height() {
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return this[_height];
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}
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set height(height) {
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if (height['<'](0))
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height = dart.as(_clampToZero(height), T);
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this[_height] = height;
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}
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}
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dart.defineNamedConstructor(MutableRectangle, 'fromPoints');
|
|
return MutableRectangle;
|
|
});
|
|
let MutableRectangle = MutableRectangle$(dynamic);
|
|
// Function _clampToZero: (num) → num
|
|
function _clampToZero(value) {
|
|
dart.assert(dart.notNull(value) < 0);
|
|
return dart.notNull(-dart.notNull(value)) * 0;
|
|
}
|
|
// Exports:
|
|
exports.E = E;
|
|
exports.LN10 = LN10;
|
|
exports.LN2 = LN2;
|
|
exports.LOG2E = LOG2E;
|
|
exports.LOG10E = LOG10E;
|
|
exports.PI = PI;
|
|
exports.SQRT1_2 = SQRT1_2;
|
|
exports.SQRT2 = SQRT2;
|
|
exports.min = min;
|
|
exports.max = max;
|
|
exports.atan2 = atan2;
|
|
exports.pow = pow;
|
|
exports.sin = sin;
|
|
exports.cos = cos;
|
|
exports.tan = tan;
|
|
exports.acos = acos;
|
|
exports.asin = asin;
|
|
exports.atan = atan;
|
|
exports.sqrt = sqrt;
|
|
exports.exp = exp;
|
|
exports.log = log;
|
|
exports.Point = Point;
|
|
exports.Point$ = Point$;
|
|
exports.Random = Random;
|
|
exports.Rectangle = Rectangle;
|
|
exports.Rectangle$ = Rectangle$;
|
|
exports.MutableRectangle = MutableRectangle;
|
|
exports.MutableRectangle$ = MutableRectangle$;
|
|
})(math || (math = {}));
|