63 lines
1.8 KiB
C#
63 lines
1.8 KiB
C#
//
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// IcarusRandomExpression.cs - represents an ICARUS "random()" function expression
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//
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// Author:
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// Michael Becker <alcexhim@gmail.com>
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//
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// Copyright (c) 2011-2020 Mike Becker's Software
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using System;
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namespace UniversalEditor.ObjectModels.Icarus.Expressions
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{
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/// <summary>
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/// Represents an ICARUS "random()" function expression.
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/// </summary>
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public class IcarusRandomExpression : IcarusFunctionExpression
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{
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public IcarusRandomExpression(double min, double max)
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{
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Minimum = min;
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Maximum = max;
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}
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public double Minimum { get; set; } = 0.0;
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public double Maximum { get; set; } = 1.0;
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protected override string FunctionName => "random";
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protected override string[] Parameters => new string[] { Minimum.ToString(), Maximum.ToString() };
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private Random rnd = new Random();
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private double? _val = null;
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protected override bool GetValueInternal(ref object value)
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{
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if (_val == null)
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{
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_val = rnd.NextDouble();
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}
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value = (float)_val;
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return true;
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}
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public override object Clone()
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{
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IcarusRandomExpression clone = new IcarusRandomExpression(Minimum, Maximum);
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return clone;
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}
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}
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}
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