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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include "scatterdatamodifier.h"
++ #include <QtGraphs/qscatterdataproxy.h>
++ #include <QtGraphs/qvalue3daxis.h>
++ #include <QtGraphs/q3dscene.h>
++ #include <QtGraphs/qscatter3dseries.h>
++ #include <qmath.h>
++ #include <QComboBox>
++
++ #include <QtGui/qquaternion.h>
++
++ const int numberOfCols = 8;
++ const int numberOfRows = 8;
++ const float limit = 8.0f;
++ #define HEDGEHOG
++
++ ScatterDataModifier::ScatterDataModifier(Q3DScatterWidgetItem *scatter)
++ : m_graph(scatter),
++ m_fontSize(40.0f),
++ m_style(QAbstract3DSeries::Mesh::UserDefined),
++ m_smooth(true)
++ {
++ m_graph->activeTheme()->setTheme(QGraphsTheme::Theme::QtGreen);
++ QFont font = m_graph->activeTheme()->labelFont();
++ font.setPointSize(m_fontSize);
++ m_graph->activeTheme()->setLabelFont(font);
++ m_graph->setShadowQuality(QtGraphs3D::ShadowQuality::SoftLow);
++ m_graph->setCameraPreset(QtGraphs3D::CameraPreset::Front);
++
++ m_graph->setAxisX(new QValue3DAxis);
++ m_graph->setAxisY(new QValue3DAxis);
++ m_graph->setAxisZ(new QValue3DAxis);
++
++ QScatterDataProxy *proxy = new QScatterDataProxy;
++ QScatter3DSeries *series = new QScatter3DSeries(proxy);
++ series->setItemLabelFormat("@xTitle: @xLabel @yTitle: @yLabel @zTitle: @zLabel");
++ m_graph->addSeries(series);
++
++ QObject::connect(&m_rotationTimer, &QTimer::timeout, this,
++ &ScatterDataModifier::triggerRotation);
++
++ addData();
++ }
++
++ ScatterDataModifier::~ScatterDataModifier()
++ {
++ delete m_graph;
++ }
++
++ void ScatterDataModifier::fpsChanged(int fps)
++ {
++ qDebug() << "Current FPS:" << fps;
++ }
++
++ void ScatterDataModifier::addData()
++ {
++ // Configure the axes according to the data
++ m_graph->axisX()->setTitle("X");
++ m_graph->axisY()->setTitle("Y");
++ m_graph->axisZ()->setTitle("Z");
++ m_graph->axisX()->setRange(-limit, limit);
++ m_graph->axisY()->setRange(-1.0f, 1.0f);
++ m_graph->axisZ()->setRange(-limit, limit);
++
++ QScatterDataArray dataArray(numberOfCols * numberOfRows);
++
++ float angleStep = 360.0f / float(numberOfCols);
++ float latAngleStep = 100.0f / float(numberOfRows);
++
++ int arrayIndex = 0;
++ for (float i = 0; i < numberOfRows; i++) {
++ float latAngle = float(i) * latAngleStep + 40.0f;
++ float radius = qSin(qDegreesToRadians(latAngle)) * limit;
++ float y = qCos(qDegreesToRadians(latAngle)) * 1.0f;
++ #ifdef HEDGEHOG
++ float angleZ = qRadiansToDegrees(qAtan((y * limit / 2.0f) / radius));
++ QQuaternion rotationZ = QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 0.0f, 1.0f), angleZ - 90.0f);
++ #endif
++ for (float j = 0; j < numberOfCols; j++) {
++ float angle = float(j) * angleStep;
++ float x = qCos(qDegreesToRadians(angle)) * radius;
++ float z = qSin(qDegreesToRadians(angle)) * radius;
++
++ float angleY = qRadiansToDegrees(qAtan(z / x));
++ if (x < 0)
++ angleY = 180.0f + angleY;
++ if (x > 0 && z < 0)
++ angleY = 360.0f + angleY;
++ #ifdef HEDGEHOG
++ QQuaternion rotationY = QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), angleY);
++ QQuaternion rotation = rotationY * rotationZ;
++ #else
++ QQuaternion rotation = QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), angleY) *
++ QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), -90.0f);
++ #endif
++
++ dataArray[arrayIndex].setPosition(QVector3D(x, y, z));
++ dataArray[arrayIndex].setRotation(rotation);
++ ++arrayIndex;
++ }
++ }
++
++ m_graph->seriesList().at(0)->dataProxy()->resetArray(dataArray);
++ }
++
++ void ScatterDataModifier::enableOptimization(int enabled)
++ {
++ if (enabled)
++ m_graph->setOptimizationHint(QtGraphs3D::OptimizationHint::Default);
++ else
++ m_graph->setOptimizationHint(QtGraphs3D::OptimizationHint::Legacy);
++ }
++
++ void ScatterDataModifier::changeStyle(int style)
++ {
++ QComboBox *comboBox = qobject_cast<QComboBox *>(sender());
++ if (comboBox) {
++ m_style = QAbstract3DSeries::Mesh(comboBox->itemData(style).toInt());
++ if (m_graph->seriesList().size())
++ m_graph->seriesList().at(0)->setMesh(m_style);
++ }
++ }
++
++ void ScatterDataModifier::changeTheme(int theme)
++ {
++ QGraphsTheme *currentTheme = m_graph->activeTheme();
++ currentTheme->setTheme(QGraphsTheme::Theme(theme));
++ emit backgroundVisibleChanged(currentTheme->isPlotAreaBackgroundVisible());
++ emit gridVisibleChanged(currentTheme->isGridVisible());
++ emit fontChanged(currentTheme->labelFont());
++ }
++
++ void ScatterDataModifier::changePresetCamera()
++ {
++ static int preset = int(QtGraphs3D::CameraPreset::FrontLow);
++
++ m_graph->setCameraPreset((QtGraphs3D::CameraPreset) preset);
++
++ if (++preset > int(QtGraphs3D::CameraPreset::DirectlyBelow))
++ preset = int(QtGraphs3D::CameraPreset::FrontLow);
++ }
++
++ void ScatterDataModifier::changeLabelStyle()
++ {
++ m_graph->activeTheme()->setLabelBackgroundVisible(
++ !m_graph->activeTheme()->isLabelBackgroundVisible());
++ }
++
++ void ScatterDataModifier::changeFont(const QFont &font)
++ {
++ QFont newFont = font;
++ newFont.setPointSizeF(m_fontSize);
++ m_graph->activeTheme()->setLabelFont(newFont);
++ }
++
++ void ScatterDataModifier::shadowQualityUpdatedByVisual(QtGraphs3D::ShadowQuality sq)
++ {
++ int quality = int(sq);
++ emit shadowQualityChanged(quality); // connected to a checkbox in main.cpp
++ }
++
++ void ScatterDataModifier::triggerRotation()
++ {
++ if (m_graph->seriesList().size()) {
++ static float seriesAngle = 0.0f;
++ QQuaternion rotation = QQuaternion::fromAxisAndAngle(1.0f, 1.0f, 1.0f, seriesAngle++);
++ m_graph->seriesList().at(0)->setMeshRotation(rotation);
++ }
++ }
++
++ void ScatterDataModifier::changeShadowQuality(int quality)
++ {
++ QtGraphs3D::ShadowQuality sq = QtGraphs3D::ShadowQuality(quality);
++ m_graph->setShadowQuality(sq);
++ }
++
++ void ScatterDataModifier::setBackgroundVisible(int visible)
++ {
++ m_graph->activeTheme()->setPlotAreaBackgroundVisible((bool)visible);
++ }
++
++ void ScatterDataModifier::setGridVisible(int visible)
++ {
++ m_graph->activeTheme()->setGridVisible((bool)visible);
++ }
++
++ void ScatterDataModifier::toggleRotation()
++ {
++ if (m_rotationTimer.isActive())
++ m_rotationTimer.stop();
++ else
++ m_rotationTimer.start(20);
++ }