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/****************************************************************************
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Copyright (C) 2010 Laszlo Simon <laszlo.simon@gmail.com>
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This file is part of the HidraVFX project.
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HidraVFX 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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HidraVFX 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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You should have received a copy of the GNU General Public License
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along with HidraVFX. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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static inline float linear1(float x1, float x2, float u)
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return(x1*(1-u)+x2*u);
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static inline float linear2(float x11, float x21, float x12, float x22, float u,float v)
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return ((1-u)*x11+u*x21)*(1-v)+v*((1-u)*x12+u*x22);
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static inline float cosine1(float x1, float x2,float u)
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u = (1-cos(u*PI))*0.5;
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return (x1*(1-u)+x2*u);
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static inline float cosine2(float x11, float x21, float x12, float x22, float u, float v)
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u = (1-cos(u*PI))*0.5;
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v = (1-cos(v*PI))*0.5;
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return ((x11*(1-u)+x21*u)*(1-v)+(x12*(1-u)+x22*u)*v);
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static inline float cubic1(float x1, float x2, float u)
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u =(4/9)*pow(u,6)-(17/9)*pow(u,4)+(22/9)*sqr(u);
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return(x1*(1-u)+x2*u);
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static inline float cubic2(float x11, float x21, float x12, float x22, float u, float v)
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u = (4/9)*pow(u,6)-(17/9)*pow(u,4)+(22/9)*sqr(u);
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v = (4/9)*pow(v,6)-(17/9)*pow(v,4)+(22/9)*sqr(v);
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return((x11*(1-u)+x21*u)*(1-v)+(x12*(1-u)+x22*u)*v);
added
removed
src/interpol.h
