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Diffstat (limited to 'spline-widget/functionconfig.cpp')
| -rw-r--r-- | spline-widget/functionconfig.cpp | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/spline-widget/functionconfig.cpp b/spline-widget/functionconfig.cpp deleted file mode 100644 index 2ac725f6..00000000 --- a/spline-widget/functionconfig.cpp +++ /dev/null @@ -1,343 +0,0 @@ -/* Copyright (c) 2012-2016, Stanislaw Halik <sthalik@misaki.pl> - - * Permission to use, copy, modify, and/or distribute this - * software for any purpose with or without fee is hereby granted, - * provided that the above copyright notice and this permission - * notice appear in all copies. - */ - -#include "functionconfig.h" -#include <QMutexLocker> -#include <QCoreApplication> -#include <QPointF> -#include <QList> -#include <QtAlgorithms> -#include <QtAlgorithms> -#include <QSettings> -#include <QPixmap> -#include <QString> -#include <algorithm> -#include <cmath> - -#include <QDebug> - -void Map::setTrackingActive(bool blnActive) -{ - activep = blnActive; -} - -Map::Map() : Map(0, 0) -{ -} - -void Map::removeAllPoints() -{ - QMutexLocker foo(&_mutex); - cur.input.clear(); - reload(); -} - -void Map::setMaxInput(qreal max_input) -{ - QMutexLocker l(&_mutex); - max_x = max_input; -} - -void Map::setMaxOutput(qreal max_output) -{ - QMutexLocker l(&_mutex); - max_y = max_output; -} - -qreal Map::maxInput() const -{ - QMutexLocker l(&_mutex); - return max_x; -} - -qreal Map::maxOutput() const -{ - QMutexLocker l(&_mutex); - return max_y; -} - -Map::Map(qreal maxx, qreal maxy) : - _mutex(QMutex::Recursive), - max_x(0), - max_y(0), - activep(false) -{ - setMaxInput(maxx); - setMaxOutput(maxy); - if (cur.input.size() == 0) - cur.input.push_back(QPointF(maxx, maxy)); - reload(); -} - -float Map::getValue(float x) -{ - QMutexLocker foo(&_mutex); - float q = x * precision(); - int xi = (int)q; - float yi = getValueInternal(xi); - float yiplus1 = getValueInternal(xi+1); - float f = (q-xi); - float ret = yiplus1 * f + yi * (1.0f - f); // at least do a linear interpolation. - last_input_value.setX(std::fabs(x)); - last_input_value.setY(std::fabs(ret)); - return ret; -} - -bool Map::getLastPoint(QPointF& point ) -{ - QMutexLocker foo(&_mutex); - point = last_input_value; - return activep; -} - -float Map::getValueInternal(int x) -{ - float sign = x < 0 ? -1 : 1; - x = abs(x); - float ret; - unsigned sz = cur.data.size(); - if (sz == 0) - ret = 0; - else - ret = cur.data[std::min(unsigned(x), sz-1u)]; - return ret * sign; -} - -static QPointF ensureInBounds(const QList<QPointF>& points, int i) -{ - int siz = points.size(); - if (siz == 0 || i < 0) - return QPointF(0, 0); - if (siz > i) - return points[i]; - return points[siz - 1]; -} - -static bool sortFn(const QPointF& one, const QPointF& two) -{ - return one.x() < two.x(); -} - -void Map::reload() -{ - if (cur.input.size()) - { - std::stable_sort(cur.input.begin(), cur.input.end(), sortFn); - - QList<QPointF> input = cur.input; - auto& data = cur.data; - - data = std::vector<float>(value_count); - const float mult = precision(); - const unsigned mult_ = unsigned(mult * 30); - - const unsigned sz = data.size(); - - for (unsigned i = 0; i < sz; i++) - data[i] = -1; - - if (input.size() == 1 && input[0].x() > 1e-2) - { - const float x = float(input[0].x()); - const float y = float(input[0].y()); - const unsigned max = unsigned(x * mult); - for (unsigned k = 0; k < max; k++) { - if (k < sz) - data[k] = y * k / max; - } - } - else if (input[0].x() > 1e-2) - input.prepend(QPointF(0, 0)); - - for (int i = 0; i < int(sz); i++) - { - const QPointF p0 = ensureInBounds(input, i - 1); - const QPointF p1 = ensureInBounds(input, i); - const QPointF p2 = ensureInBounds(input, i + 1); - const QPointF p3 = ensureInBounds(input, i + 2); - - const float p0_x = p0.x(), p1_x = p1.x(), p2_x = p2.x(), p3_x = p3.x(); - const float p0_y = p0.y(), p1_y = p1.y(), p2_y = p2.y(), p3_y = p3.y(); - - // multiplier helps fill in all the x's needed - const unsigned end = std::min(sz, unsigned(p2_x * mult_)); - const unsigned start = unsigned(p1_x * mult); - - for (unsigned j = start; j < end; j++) - { - const float t = (j - start) / (float) (end - start); - const float t2 = t*t; - const float t3 = t*t*t; - - const int x = .5f * ((2 * p1_x) + - (-p0_x + p2_x) * t + - (2 * p0_x - 5 * p1_x + 4 * p2_x - p3_x) * t2 + - (-p0_x + 3 * p1_x - 3 * p2_x + p3_x) * t3) - * mult; - - const float y = .5f * ((2 * p1_y) + - (-p0_y + p2_y) * t + - (2 * p0_y - 5 * p1_y + 4 * p2_y - p3_y) * t2 + - (-p0_y + 3 * p1_y - 3 * p2_y + p3_y) * t3); - - if (x >= 0 && x < (int)sz) - data[x] = y; - } - } - - float last = 0; - for (unsigned i = 0; i < sz; i++) - { - if (data[i] < 0) - data[i] = last; - last = data[i]; - } - } - else - cur.data.clear(); -} - -void Map::removePoint(int i) -{ - QMutexLocker foo(&_mutex); - if (i >= 0 && i < cur.input.size()) - { - cur.input.removeAt(i); - reload(); - } -} - -void Map::addPoint(QPointF pt) -{ - QMutexLocker foo(&_mutex); - cur.input.append(pt); - reload(); - std::stable_sort(cur.input.begin(), cur.input.end(), sortFn); -} - -void Map::movePoint(int idx, QPointF pt) -{ - QMutexLocker foo(&_mutex); - if (idx >= 0 && idx < cur.input.size()) - { - cur.input[idx] = pt; - // we don't allow points to be reordered, but sort due to possible caller logic error - std::stable_sort(cur.input.begin(), cur.input.end(), sortFn); - reload(); - } -} - -const QList<QPointF> Map::getPoints() -{ - QMutexLocker foo(&_mutex); - return cur.input; -} - -void Map::invalidate_unsaved_settings() -{ - QMutexLocker foo(&_mutex); - cur = saved; - reload(); -} - -void Map::loadSettings(QSettings& settings, const QString& title) -{ - QMutexLocker foo(&_mutex); - QPointF newPoint; - QList<QPointF> points; - settings.beginGroup(QString("Curves-%1").arg(title)); - - int max = settings.value("point-count", 0).toInt(); - - for (int i = 0; i < max; i++) - { - newPoint = QPointF(settings.value(QString("point-%1-x").arg(i), 0).toDouble(), - settings.value(QString("point-%1-y").arg(i), 0).toDouble()); - if (newPoint.x() > max_x) - newPoint.setX(max_x); - if (newPoint.y() > max_y) - newPoint.setY(max_y); - points.append(newPoint); - } - - settings.endGroup(); - - if (max == 0) - points.append(QPointF(maxInput(), maxOutput())); - - cur.input = points; - reload(); - saved = cur; -} - -bool Map::State::operator==(const State& other) const -{ - if (input.size() != other.input.size()) - return false; - - const int sz = input.size(); - - using std::fabs; - - for (int i = 0; i < sz; i++) - { - const qreal eps = 1e-3; - - if (fabs(input[i].x() - other.input[i].x()) > eps || - fabs(input[i].y() - other.input[i].y()) > eps) - { - return false; - } - } - return true; -} - -void Map::saveSettings(QSettings& settings, const QString& title) -{ - QMutexLocker foo(&_mutex); - - if (cur == saved) - return; - - qDebug() << "spline-widget: saving" << title; - - settings.beginGroup(QStringLiteral("Curves-%1").arg(title)); - - if (cur.input.size() == 0) - cur.input.push_back(QPointF(max_x, max_y)); - - const int max = cur.input.size(); - settings.setValue("point-count", max); - - for (int i = 0; i < max; i++) - { - settings.setValue(QString("point-%1-x").arg(i), cur.input[i].x()); - settings.setValue(QString("point-%1-y").arg(i), cur.input[i].y()); - } - - for (int i = max; true; i++) - { - QString x = QString("point-%1-x").arg(i); - if (!settings.contains(x)) - break; - settings.remove(x); - settings.remove(QString("point-%1-y").arg(i)); - } - - saved = cur; - - settings.endGroup(); -} - - -int Map::precision() const -{ - if (cur.input.size()) - return (value_count-1) / std::max<float>(1.f, (cur.input[cur.input.size() - 1].x())); - return 1; -} |