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83 lines
3.5 KiB
C
83 lines
3.5 KiB
C
/*
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** interphelpers.h
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**
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** Interpolation helpers for use throughout Build games.
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**
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**---------------------------------------------------------------------------
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** Copyright 2022 Christoph Oelckers, Mitchell Richters
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#pragma once
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#include "fixedhorizon.h"
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inline constexpr int32_t interpolatedvalue(int32_t oval, int32_t val, double const smoothratio, int const scale = 16)
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{
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return oval + MulScale(val - oval, int(smoothratio), scale);
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}
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inline constexpr int32_t interpolatedvalue(int32_t oval, int32_t val, int const smoothratio, int const scale = 16)
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{
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return oval + MulScale(val - oval, smoothratio, scale);
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}
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inline constexpr double interpolatedvaluef(double oval, double val, double const smoothratio, int const scale = 16)
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{
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return oval + MulScaleF(val - oval, smoothratio, scale);
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}
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inline constexpr int32_t interpolatedangle(int32_t oang, int32_t ang, double const smoothratio, int const scale = 16)
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{
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return oang + MulScale(((ang + 1024 - oang) & 2047) - 1024, int(smoothratio), scale);
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}
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inline constexpr int32_t interpolatedangle(int32_t oang, int32_t ang, int const smoothratio, int const scale = 16)
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{
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return oang + MulScale(((ang + 1024 - oang) & 2047) - 1024, smoothratio, scale);
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}
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inline DAngle interpolatedangle(DAngle oang, DAngle ang, double const smoothratio, int const scale = 16)
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{
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return oang + (deltaangle(oang, ang) * smoothratio * (1. / (1 << scale)));
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}
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inline DAngle interpolatedangle(DAngle oang, DAngle ang, int const smoothratio, int const scale = 16)
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{
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return oang + (deltaangle(oang, ang) * smoothratio * (1. / (1 << scale)));
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}
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inline constexpr fixedhoriz interpolatedhorizon(fixedhoriz oval, fixedhoriz val, double const smoothratio, int const scale = 16)
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{
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return q16horiz(oval.asq16() + MulScale((val - oval).asq16(), int(smoothratio), scale));
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}
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inline constexpr fixedhoriz interpolatedhorizon(fixedhoriz oval, fixedhoriz val, int const smoothratio, int const scale = 16)
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{
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return q16horiz(oval.asq16() + MulScale((val - oval).asq16(), smoothratio, scale));
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}
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