Mercurial > hg > svcore
view base/ColourMapper.cpp @ 299:576be0d0d218
* Merge transform directory from sv-match-alignment branch
(the previous comment included notes for this stuff, but I missed it
in the actual merge)
* Fix crash when a transform fails to create an output model and the
thread that created the transform then deletes its input model thinking
it's no longer needed, even though the transform run thread is still
using it -- fix is to wait() on the transform before returning the
null output model
author | Chris Cannam |
---|---|
date | Fri, 28 Sep 2007 16:15:06 +0000 |
parents | 3b8008d09541 |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006-2007 Chris Cannam and QMUL. This program 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. See the file COPYING included with this distribution for more information. */ #include "ColourMapper.h" #include <iostream> #include <cmath> ColourMapper::ColourMapper(int map, float min, float max) : QObject(), m_map(map), m_min(min), m_max(max) { if (m_min == m_max) { std::cerr << "WARNING: ColourMapper: min == max (== " << m_min << "), adjusting" << std::endl; m_max = m_min + 1; } } ColourMapper::~ColourMapper() { } int ColourMapper::getColourMapCount() { return 11; } QString ColourMapper::getColourMapName(int n) { if (n >= getColourMapCount()) return tr("<unknown>"); StandardMap map = (StandardMap)n; switch (map) { case DefaultColours: return tr("Default"); case WhiteOnBlack: return tr("White on Black"); case BlackOnWhite: return tr("Black on White"); case RedOnBlue: return tr("Red on Blue"); case YellowOnBlack: return tr("Yellow on Black"); case BlueOnBlack: return tr("Blue on Black"); case Sunset: return tr("Sunset"); case FruitSalad: return tr("Fruit Salad"); case Banded: return tr("Banded"); case Highlight: return tr("Highlight"); case Printer: return tr("Printer"); } return tr("<unknown>"); } QColor ColourMapper::map(float value) const { float norm = (value - m_min) / (m_max - m_min); if (norm < 0.f) norm = 0.f; if (norm > 1.f) norm = 1.f; float h = 0.f, s = 0.f, v = 0.f, r = 0.f, g = 0.f, b = 0.f; bool hsv = true; // float red = 0.f, green = 0.3333f; float blue = 0.6666f, pieslice = 0.3333f; if (m_map >= getColourMapCount()) return Qt::black; StandardMap map = (StandardMap)m_map; switch (map) { case DefaultColours: h = blue - norm * 2.f * pieslice; s = 0.5f + norm/2.f; v = norm; break; case WhiteOnBlack: r = g = b = norm; hsv = false; break; case BlackOnWhite: r = g = b = 1.f - norm; hsv = false; break; case RedOnBlue: h = blue - pieslice/4.f + norm * (pieslice + pieslice/4.f); s = 1.f; v = norm; break; case YellowOnBlack: h = 0.15f; s = 1.f; v = norm; break; case BlueOnBlack: h = blue; s = 1.f; v = norm * 2.f; if (v > 1.f) { v = 1.f; s = 1.f - (sqrtf(norm) - 0.707f) * 3.413f; if (s < 0.f) s = 0.f; if (s > 1.f) s = 1.f; } break; case Sunset: r = (norm - 0.24f) * 2.38f; if (r > 1.f) r = 1.f; if (r < 0.f) r = 0.f; g = (norm - 0.64f) * 2.777f; if (g > 1.f) g = 1.f; if (g < 0.f) g = 0.f; b = (3.6f * norm); if (norm > 0.277f) b = 2.f - b; if (b > 1.f) b = 1.f; if (b < 0.f) b = 0.f; hsv = false; break; case FruitSalad: h = blue + (pieslice/6.f) - norm; if (h < 0.f) h += 1.f; s = 1.f; v = 1.f; break; case Banded: if (norm < 0.125) return Qt::darkGreen; else if (norm < 0.25) return Qt::green; else if (norm < 0.375) return Qt::darkBlue; else if (norm < 0.5) return Qt::blue; else if (norm < 0.625) return Qt::darkYellow; else if (norm < 0.75) return Qt::yellow; else if (norm < 0.875) return Qt::darkRed; else return Qt::red; break; case Highlight: if (norm > 0.99) return Qt::white; else return Qt::darkBlue; case Printer: if (norm > 0.8) { r = 1.f; } else if (norm > 0.7) { r = 0.9f; } else if (norm > 0.6) { r = 0.8f; } else if (norm > 0.5) { r = 0.7f; } else if (norm > 0.4) { r = 0.6f; } else if (norm > 0.3) { r = 0.5f; } else if (norm > 0.2) { r = 0.4f; } else { r = 0.f; } r = g = b = 1.f - r; hsv = false; break; } if (hsv) { return QColor::fromHsvF(h, s, v); } else { return QColor::fromRgbF(r, g, b); } } QColor ColourMapper::getContrastingColour() const { if (m_map >= getColourMapCount()) return Qt::white; StandardMap map = (StandardMap)m_map; switch (map) { case DefaultColours: return QColor(255, 150, 50); case WhiteOnBlack: return Qt::red; case BlackOnWhite: return Qt::darkGreen; case RedOnBlue: return Qt::green; case YellowOnBlack: return QColor::fromHsv(240, 255, 255); case BlueOnBlack: return Qt::red; case Sunset: return Qt::white; case FruitSalad: return Qt::white; case Banded: return Qt::cyan; case Highlight: return Qt::red; case Printer: return Qt::red; } return Qt::white; } bool ColourMapper::hasLightBackground() const { if (m_map >= getColourMapCount()) return false; StandardMap map = (StandardMap)m_map; switch (map) { case BlackOnWhite: case Printer: return true; default: return false; } }