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-rw-r--r--dgedit/mipmap.cc99
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diff --git a/dgedit/mipmap.cc b/dgedit/mipmap.cc
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--- a/dgedit/mipmap.cc
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-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/***************************************************************************
- * mipmap.cc
- *
- * Fri Sep 3 16:39:46 CEST 2010
- * Copyright 2010 Bent Bisballe Nyeng
- * deva@aasimon.org
- ****************************************************************************/
-
-/*
- * This file is part of DrumGizmo.
- *
- * DrumGizmo is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * DrumGizmo is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with DrumGizmo; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-#include "mipmap.h"
-
-MipMap::MipMap(float *data, size_t size)
-{
- this->data = data;
- this->size = size;
- this->zoom = 1;
-}
-
-MipMapValue MipMap::data_lookup(size_t begin, size_t end)
-{
- MipMapValue val;
-
- size_t numlavg = 0;
- size_t numuavg = 0;
- for(size_t i = begin; i <= end; i++) {
- if(i > size || i < 0) break;
- if(data[i] > val.max) val.max = data[i];
- if(data[i] < val.min) val.min = data[i];
-
- if(data[i] > 0) { val.uavg += data[i]; numuavg++; }
- if(data[i] < 0) { val.lavg += data[i]; numlavg++; }
- }
-
- if(numlavg) val.lavg /= (float) numlavg;
- if(numuavg) val.uavg /= (float) numuavg;
-
- return val;
-}
-
-MipMapValue MipMap::mipmap_lookup(size_t begin, size_t end)
-{
- MipMapValue val;
-
- size_t numlavg = 0;
- size_t numuavg = 0;
- for(size_t i = begin; i <= end; i++) {
- if(i > size || i < 0) break;
- if(data[i] > val.max) val.max = data[i];
- if(data[i] < val.min) val.min = data[i];
-
- if(data[i] > 0) { val.uavg += data[i]; numuavg++; }
- if(data[i] < 0) { val.lavg += data[i]; numlavg++; }
- }
-
- if(numlavg) val.lavg /= (float) numlavg;
- if(numuavg) val.uavg /= (float) numuavg;
-
- return val;
-}
-
-#define ABS(x) (x>0?x:-x)
-
-MipMapValue MipMap::lookup(size_t begin, size_t end)
-{
- return data_lookup(begin, end);
- /*
-
- size_t zoom_factor = ABS(end - begin);
-
- if(zoom_factor < zoom / 2) {
- if(zoom == 1) { // Lookup in original data.
- return data_lookup(begin, end);
- }
-
- return mipmap_lookup(begin, end);
- }
-
- if(lowerlevel) return lowerlevel->lookup(begin,end);
-
- return MipMapValue();
- */
-}