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695ea30 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | /**
* dat-gui JavaScript Controller Library
* https://github.com/dataarts/dat.gui
*
* Copyright 2011 Data Arts Team, Google Creative Lab
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
import Controller from './Controller';
import common from '../utils/common';
function numDecimals(x) {
const _x = x.toString();
if (_x.indexOf('.') > -1) {
return _x.length - _x.indexOf('.') - 1;
}
return 0;
}
/**
* @class Represents a given property of an object that is a number.
*
* @extends dat.controllers.Controller
*
* @param {Object} object The object to be manipulated
* @param {string} property The name of the property to be manipulated
* @param {Object} [params] Optional parameters
* @param {Number} [params.min] Minimum allowed value
* @param {Number} [params.max] Maximum allowed value
* @param {Number} [params.step] Increment by which to change value
*/
class NumberController extends Controller {
constructor(object, property, params) {
super(object, property);
const _params = params || {};
this.__min = _params.min;
this.__max = _params.max;
this.__step = _params.step;
if (common.isUndefined(this.__step)) {
if (this.initialValue === 0) {
this.__impliedStep = 1; // What are we, psychics?
} else {
// Hey Doug, check this out.
this.__impliedStep = Math.pow(10, Math.floor(Math.log(Math.abs(this.initialValue)) / Math.LN10)) / 10;
}
} else {
this.__impliedStep = this.__step;
}
this.__precision = numDecimals(this.__impliedStep);
}
setValue(v) {
let _v = v;
if (this.__min !== undefined && _v < this.__min) {
_v = this.__min;
} else if (this.__max !== undefined && _v > this.__max) {
_v = this.__max;
}
if (this.__step !== undefined && _v % this.__step !== 0) {
_v = Math.round(_v / this.__step) * this.__step;
}
return super.setValue(_v);
}
/**
* Specify a minimum value for <code>object[property]</code>.
*
* @param {Number} minValue The minimum value for
* <code>object[property]</code>
* @returns {dat.controllers.NumberController} this
*/
min(minValue) {
this.__min = minValue;
return this;
}
/**
* Specify a maximum value for <code>object[property]</code>.
*
* @param {Number} maxValue The maximum value for
* <code>object[property]</code>
* @returns {dat.controllers.NumberController} this
*/
max(maxValue) {
this.__max = maxValue;
return this;
}
/**
* Specify a step value that dat.controllers.NumberController
* increments by.
*
* @param {Number} stepValue The step value for
* dat.controllers.NumberController
* @default if minimum and maximum specified increment is 1% of the
* difference otherwise stepValue is 1
* @returns {dat.controllers.NumberController} this
*/
step(stepValue) {
this.__step = stepValue;
this.__impliedStep = stepValue;
this.__precision = numDecimals(stepValue);
return this;
}
}
export default NumberController;
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