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90b3f75d82
Our files are up to a decade old, and have churned so much, that the initial author of the file no longer has much meaning. Furthermore, this will encourage developers to post to the developer group, rather than emailing Googlers (usually me) directly.
64 lines
1.7 KiB
JavaScript
64 lines
1.7 KiB
JavaScript
/**
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* @license
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* Copyright 2019 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Utility methods for math.
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* These methods are not specific to Blockly, and could be factored out into
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* a JavaScript framework such as Closure.
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*/
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'use strict';
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/**
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* Utility methods for math.
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* These methods are not specific to Blockly, and could be factored out into
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* a JavaScript framework such as Closure.
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* @namespace Blockly.utils.math
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*/
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goog.module('Blockly.utils.math');
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/**
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* Converts degrees to radians.
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* Copied from Closure's goog.math.toRadians.
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* @param {number} angleDegrees Angle in degrees.
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* @return {number} Angle in radians.
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* @alias Blockly.utils.math.toRadians
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*/
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const toRadians = function(angleDegrees) {
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return angleDegrees * Math.PI / 180;
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};
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exports.toRadians = toRadians;
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/**
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* Converts radians to degrees.
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* Copied from Closure's goog.math.toDegrees.
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* @param {number} angleRadians Angle in radians.
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* @return {number} Angle in degrees.
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* @alias Blockly.utils.math.toDegrees
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*/
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const toDegrees = function(angleRadians) {
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return angleRadians * 180 / Math.PI;
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};
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exports.toDegrees = toDegrees;
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/**
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* Clamp the provided number between the lower bound and the upper bound.
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* @param {number} lowerBound The desired lower bound.
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* @param {number} number The number to clamp.
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* @param {number} upperBound The desired upper bound.
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* @return {number} The clamped number.
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* @alias Blockly.utils.math.clamp
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*/
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const clamp = function(lowerBound, number, upperBound) {
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if (upperBound < lowerBound) {
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const temp = upperBound;
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upperBound = lowerBound;
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lowerBound = temp;
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}
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return Math.max(lowerBound, Math.min(number, upperBound));
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};
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exports.clamp = clamp;
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