mirror of
https://github.com/scratchfoundation/paper.js.git
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61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
/*
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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
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* http://paperjs.org/
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*
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* Copyright (c) 2011 - 2016, Juerg Lehni & Jonathan Puckey
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* http://scratchdisk.com/ & http://jonathanpuckey.com/
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*
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* Distributed under the MIT license. See LICENSE file for details.
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*
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* All rights reserved.
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*/
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/**
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* @name Formatter
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* @class
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* @private
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*/
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var Formatter = Base.extend(/** @lends Formatter# */{
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/**
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* @param {Number} [precision=5] the amount of fractional digits
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*/
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initialize: function(precision) {
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this.precision = Base.pick(precision, 5);
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this.multiplier = Math.pow(10, this.precision);
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},
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/**
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* Utility function for rendering numbers as strings at a precision of
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* up to the amount of fractional digits.
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*
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* @param {Number} num the number to be converted to a string
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*/
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number: function(val) {
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// It would be nice to use Number#toFixed() instead, but it pads with 0,
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// unnecessarily consuming space.
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// If precision is >= 16, don't do anything at all, since that appears
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// to be the limit of the precision (it actually varies).
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return this.precision < 16
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? Math.round(val * this.multiplier) / this.multiplier : val;
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},
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pair: function(val1, val2, separator) {
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return this.number(val1) + (separator || ',') + this.number(val2);
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},
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point: function(val, separator) {
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return this.number(val.x) + (separator || ',') + this.number(val.y);
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},
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size: function(val, separator) {
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return this.number(val.width) + (separator || ',')
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+ this.number(val.height);
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},
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rectangle: function(val, separator) {
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return this.point(val, separator) + (separator || ',')
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+ this.size(val, separator);
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}
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});
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Formatter.instance = new Formatter();
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