67 lines
2.0 KiB
C#
67 lines
2.0 KiB
C#
// Copyright (c) Xenko contributors (https://xenko.com) and Silicon Studio Corp. (https://www.siliconstudio.co.jp)
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// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
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//
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// Copyright (c) 2010-2011 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.ComponentModel;
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using System.Globalization;
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using System.Runtime.InteropServices;
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using System.Runtime.Serialization;
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namespace math
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{
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static public class fn
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{
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static public float SmoothStepCos( float v )
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{
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var dV = (double)v;
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var newV = 0.5 - 0.5 * Math.Cos( Math.PI * dV );
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return (float)newV;
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}
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static public float SmoothStepSquare( float v )
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{
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var dV = (double)v;
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var newV = dV * dV * (3.0 - 2.0 * dV);
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return (float)newV;
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}
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static public float SmoothStepCube( float v )
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{
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var dV = (double)v;
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var newV = dV * dV * dV * ( 6.0 * dV * dV - 15.0 * dV + 10.0 );
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return (float)newV;
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}
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}
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}
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