ResInsight/ApplicationCode/UserInterface/RiuQwtPlotCurve.cpp

411 lines
16 KiB
C++

/////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2015- Statoil ASA
// Copyright (C) 2015- Ceetron Solutions AS
//
// ResInsight 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 3 of the License, or
// (at your option) any later version.
//
// ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
// for more details.
//
/////////////////////////////////////////////////////////////////////////////////
#include "RiuQwtPlotCurve.h"
#include "RiaCurveDataTools.h"
#include "RiuQwtSymbol.h"
#include "qwt_symbol.h"
#include "qwt_date.h"
#include "qwt_point_mapper.h"
#include "qwt_painter.h"
#include "qwt_plot_intervalcurve.h"
#include "qwt_scale_map.h"
#include "qwt_interval_symbol.h"
#include <limits>
//--------------------------------------------------------------------------------------------------
/// Internal constants
//--------------------------------------------------------------------------------------------------
#define DOUBLE_INF std::numeric_limits<double>::infinity()
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RiuQwtPlotCurve::RiuQwtPlotCurve(const QString &title)
: QwtPlotCurve(title)
{
this->setLegendAttribute(QwtPlotCurve::LegendShowLine, true);
this->setLegendAttribute(QwtPlotCurve::LegendShowSymbol, true);
this->setLegendAttribute(QwtPlotCurve::LegendShowBrush, true);
this->setRenderHint(QwtPlotItem::RenderAntialiased, true);
m_symbolSkipPixelDistance = 10.0f;
m_errorBars = new QwtPlotIntervalCurve();
m_errorBars->setStyle(QwtPlotIntervalCurve::CurveStyle::NoCurve);
m_errorBars->setSymbol(new QwtIntervalSymbol(QwtIntervalSymbol::Bar));
m_errorBars->setItemAttribute(QwtPlotItem::Legend, false);
m_errorBars->setZ(Z_ERROR_BARS);
m_showErrorBars = true;
m_attachedToPlot = nullptr;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RiuQwtPlotCurve::~RiuQwtPlotCurve()
{
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setSamplesFromXValuesAndYValues(const std::vector<double>& xValues, const std::vector<double>& yValues, const std::vector<double>& yErrorValues, bool keepOnlyPositiveValues)
{
CVF_ASSERT(xValues.size() == yValues.size());
CVF_ASSERT(yErrorValues.empty() || yErrorValues.size() == xValues.size());
bool showErrorBars = m_showErrorBars && !yErrorValues.empty();
QPolygonF points;
QVector<QwtIntervalSample> errorIntervals;
std::vector< std::pair<size_t, size_t> > filteredIntervals;
{
std::vector<double> filteredYValues;
std::vector<double> filteredXValues;
std::vector<double> filteredYErrorValues;
{
auto intervalsOfValidValues = RiaCurveDataTools::calculateIntervalsOfValidValues(yValues, keepOnlyPositiveValues);
RiaCurveDataTools::getValuesByIntervals(yValues, intervalsOfValidValues, &filteredYValues);
RiaCurveDataTools::getValuesByIntervals(xValues, intervalsOfValidValues, &filteredXValues);
if(showErrorBars) RiaCurveDataTools::getValuesByIntervals(yErrorValues, intervalsOfValidValues, &filteredYErrorValues);
filteredIntervals = RiaCurveDataTools::computePolyLineStartStopIndices(intervalsOfValidValues);
}
points.reserve(static_cast<int>(filteredXValues.size()));
errorIntervals.reserve(static_cast<int>(filteredXValues.size()));
for ( size_t i = 0; i < filteredXValues.size(); i++ )
{
points << QPointF(filteredXValues[i], filteredYValues[i]);
if (showErrorBars && filteredYValues[i] != DOUBLE_INF && filteredYErrorValues[i] != DOUBLE_INF)
{
errorIntervals << QwtIntervalSample(filteredXValues[i], filteredYValues[i] - filteredYErrorValues[i], filteredYValues[i] + filteredYErrorValues[i]);
}
}
}
this->setSamples(points);
this->setLineSegmentStartStopIndices(filteredIntervals);
if(showErrorBars) m_errorBars->setSamples(errorIntervals);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setSamplesFromXValuesAndYValues(const std::vector<double>& xValues, const std::vector<double>& yValues, bool keepOnlyPositiveValues)
{
setSamplesFromXValuesAndYValues(xValues, yValues, std::vector<double>(), keepOnlyPositiveValues);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setSamplesFromDatesAndYValues(const std::vector<QDateTime>& dateTimes, const std::vector<double>& yValues, bool keepOnlyPositiveValues)
{
setSamplesFromXValuesAndYValues(RiuQwtPlotCurve::fromQDateTime(dateTimes), yValues, std::vector<double>(), keepOnlyPositiveValues);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setSamplesFromTimeTAndYValues(const std::vector<time_t>& dateTimes, const std::vector<double>& yValues, bool keepOnlyPositiveValues)
{
setSamplesFromXValuesAndYValues(RiuQwtPlotCurve::fromTime_t(dateTimes), yValues, std::vector<double>(), keepOnlyPositiveValues);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setSamplesFromTimeTAndYValues(const std::vector<time_t>& dateTimes, const std::vector<double>& yValues, const std::vector<double>& yErrorValues, bool keepOnlyPositiveValues)
{
setSamplesFromXValuesAndYValues(RiuQwtPlotCurve::fromTime_t(dateTimes), yValues, yErrorValues, keepOnlyPositiveValues);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::drawCurve(QPainter* p, int style,
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
const QRectF& canvasRect, int from, int to) const
{
size_t intervalCount = m_polyLineStartStopIndices.size();
if (intervalCount > 0)
{
for (size_t intIdx = 0; intIdx < intervalCount; intIdx++)
{
if (m_polyLineStartStopIndices[intIdx].first == m_polyLineStartStopIndices[intIdx].second)
{
// Use a symbol to draw a single value, as a single value will not be visible
// when using QwtPlotCurve::drawCurve without symbols activated
QwtSymbol symbol(QwtSymbol::XCross);
symbol.setSize(10, 10);
QwtPlotCurve::drawSymbols(p, symbol, xMap, yMap, canvasRect, (int) m_polyLineStartStopIndices[intIdx].first, (int) m_polyLineStartStopIndices[intIdx].second);
}
else
{
QwtPlotCurve::drawCurve(p, style, xMap, yMap, canvasRect, (int) m_polyLineStartStopIndices[intIdx].first, (int) m_polyLineStartStopIndices[intIdx].second);
}
}
}
else
{
QwtPlotCurve::drawCurve(p, style, xMap, yMap, canvasRect, from, to);
}
};
//--------------------------------------------------------------------------------------------------
/// Drawing symbols but skipping if they are to close to the previous one
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::drawSymbols(QPainter *painter, const QwtSymbol &symbol,
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QRectF &canvasRect, int from, int to) const
{
QwtPointMapper mapper;
bool filterSymbols = m_symbolSkipPixelDistance > 0;
if (filterSymbols)
{
mapper.setFlag(QwtPointMapper::RoundPoints,
QwtPainter::roundingAlignment(painter));
mapper.setFlag(QwtPointMapper::WeedOutPoints,
testPaintAttribute(QwtPlotCurve::FilterPoints));
mapper.setBoundingRect(canvasRect);
}
const QPolygonF points = mapper.toPointsF(xMap, yMap, data(), from, to);
int pointCount = points.size();
QPolygonF pointsToDisplay;
if (filterSymbols)
{
QPointF lastDrawnSymbolPos;
if (pointCount > 0)
{
pointsToDisplay.push_back(points[0]);
lastDrawnSymbolPos = points[0];
}
float sqSkipDist = m_symbolSkipPixelDistance * m_symbolSkipPixelDistance;
for (int pIdx = 1; pIdx < pointCount - 1; ++pIdx)
{
QPointF diff = points[pIdx] - lastDrawnSymbolPos;
float sqDistBetweenSymbols = diff.x()*diff.x() + diff.y()*diff.y();
if (sqDistBetweenSymbols > sqSkipDist)
{
pointsToDisplay.push_back(points[pIdx]);
lastDrawnSymbolPos = points[pIdx];
}
}
if (pointCount > 1) pointsToDisplay.push_back(points.back());
}
else
{
pointsToDisplay = points;
}
if (pointsToDisplay.size() > 0)
{
symbol.drawSymbols(painter, pointsToDisplay);
const RiuQwtSymbol* sym = dynamic_cast<const RiuQwtSymbol*>(&symbol);
if (sym && !sym->label().isEmpty())
{
for (auto& pt : pointsToDisplay)
{
sym->renderSymbolLabel(painter, pt);
}
}
}
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setLineSegmentStartStopIndices(const std::vector< std::pair<size_t, size_t> >& lineSegmentStartStopIndices)
{
m_polyLineStartStopIndices = lineSegmentStartStopIndices;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setSymbolSkipPixelDistance(float distance)
{
m_symbolSkipPixelDistance = distance >= 0.0f ? distance: 0.0f;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::attach(QwtPlot *plot)
{
QwtPlotItem::attach(plot);
if(m_showErrorBars) m_errorBars->attach(plot);
m_attachedToPlot = plot;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::detach()
{
QwtPlotItem::detach();
m_errorBars->detach();
m_attachedToPlot = nullptr;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::clearErrorBars()
{
m_errorBars->setSamples(nullptr);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::showErrorBars(bool show)
{
m_showErrorBars = show;
if (m_showErrorBars && m_attachedToPlot) m_errorBars->attach(m_attachedToPlot);
else m_errorBars->detach();
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setErrorBarsColor(QColor color)
{
QwtIntervalSymbol* newSymbol = new QwtIntervalSymbol(QwtIntervalSymbol::Bar);
newSymbol->setPen(QPen(color));
m_errorBars->setSymbol(newSymbol);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuQwtPlotCurve::setAppearance(LineStyleEnum lineStyle,
CurveInterpolationEnum interpolationType,
int curveThickness,
const QColor& curveColor)
{
QwtPlotCurve::CurveStyle curveStyle = QwtPlotCurve::NoCurve;
Qt::PenStyle penStyle = Qt::SolidLine;
if (lineStyle != STYLE_NONE)
{
switch (interpolationType)
{
case INTERPOLATION_STEP_LEFT:
curveStyle = QwtPlotCurve::Steps;
setCurveAttribute(QwtPlotCurve::Inverted, false);
break;
case INTERPOLATION_POINT_TO_POINT: // Fall through
default:
curveStyle = QwtPlotCurve::Lines;
break;
}
switch (lineStyle)
{
case STYLE_SOLID:
penStyle = Qt::SolidLine;
break;
case STYLE_DASH:
penStyle = Qt::DashLine;
break;
case STYLE_DOT:
penStyle = Qt::DotLine;
break;
case STYLE_DASH_DOT:
penStyle = Qt::DashDotLine;
break;
default:
break;
}
}
QPen curvePen(curveColor);
curvePen.setWidth(curveThickness);
curvePen.setStyle(penStyle);
setPen(curvePen);
setStyle(curveStyle);
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
std::vector<double> RiuQwtPlotCurve::fromQDateTime(const std::vector<QDateTime>& dateTimes)
{
std::vector<double> doubleValues;
if (!dateTimes.empty())
{
doubleValues.reserve(dateTimes.size());
for (const auto& dt : dateTimes)
{
doubleValues.push_back(QwtDate::toDouble(dt));
}
}
return doubleValues;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
std::vector<double> RiuQwtPlotCurve::fromTime_t(const std::vector<time_t>& timeSteps)
{
std::vector<double> doubleValues;
if (!timeSteps.empty())
{
doubleValues.reserve(timeSteps.size());
for (const auto& time : timeSteps)
{
double milliSecSinceEpoch = time * 1000; // This is kind of hack, as the c++ standard does not state what time_t is. "Almost always" secs since epoch according to cppreference.com
doubleValues.push_back(milliSecSinceEpoch);
}
}
return doubleValues;
}