svcore  1.9
LogRange.h
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
00002 
00003 /*
00004     Sonic Visualiser
00005     An audio file viewer and annotation editor.
00006     Centre for Digital Music, Queen Mary, University of London.
00007     This file copyright 2006 Chris Cannam.
00008     
00009     This program is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU General Public License as
00011     published by the Free Software Foundation; either version 2 of the
00012     License, or (at your option) any later version.  See the file
00013     COPYING included with this distribution for more information.
00014 */
00015 
00016 #ifndef _LOG_RANGE_H_
00017 #define _LOG_RANGE_H_
00018 
00019 #include <vector>
00020 #include "Debug.h"
00021 
00022 class LogRange
00023 {
00024 public:
00031     static void mapRange(float &min, float &max, float thresh = -10);
00032 
00038     static float map(float value, float thresh = -10);
00039 
00044     static float unmap(float value);
00045 
00051     static bool useLogScale(std::vector<float> values);
00052 
00053 };
00054 
00055 #endif