forked from 0ad/0ad
vladislavbelov
9b3dcd2610
Tested By: Langbart Differential Revision: https://code.wildfiregames.com/D4351 This was SVN commit r26001.
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. 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 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_MATHUTIL
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#define INCLUDED_MATHUTIL
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#define DEGTORAD(a) ((a) * ((float)M_PI/180.0f))
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#define RADTODEG(a) ((a) * (180.0f/(float)M_PI))
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#define SQR(x) ((x) * (x))
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template<typename T>
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inline T Interpolate(const T& a, const T& b, float t)
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{
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return a + (b - a) * t;
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}
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template<typename T>
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inline T Clamp(T value, T min, T max)
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{
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if (value <= min)
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return min;
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else if (value >= max)
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return max;
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return value;
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}
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template<typename T>
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inline T SmoothStep(T edge0, T edge1, T value)
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{
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value = Clamp<T>((value - edge0) / (edge1 - edge0), 0, 1);
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return value * value * (3 - 2 * value);
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}
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inline float sgn(float a)
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{
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if (a > 0.0f)
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return 1.0f;
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if (a < 0.0f)
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return -1.0f;
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return 0.0f;
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}
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#endif // INCLUDED_MATHUTIL
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