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-rw-r--r--examples/datavisualization/surface/surfacegraph.cpp277
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diff --git a/examples/datavisualization/surface/surfacegraph.cpp b/examples/datavisualization/surface/surfacegraph.cpp
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--- a/examples/datavisualization/surface/surfacegraph.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the Qt Data Visualization module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:GPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3 or (at your option) any later version
-** approved by the KDE Free Qt Foundation. The licenses are as published by
-** the Free Software Foundation and appearing in the file LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "surfacegraph.h"
-
-#include <QtDataVisualization/QValue3DAxis>
-#include <QtDataVisualization/Q3DTheme>
-#include <QtGui/QImage>
-#include <QtCore/qmath.h>
-
-const int sampleCountX = 50;
-const int sampleCountZ = 50;
-const int heightMapGridStepX = 6;
-const int heightMapGridStepZ = 6;
-const float sampleMin = -8.0f;
-const float sampleMax = 8.0f;
-
-SurfaceGraph::SurfaceGraph(Q3DSurface *surface)
- : m_graph(surface)
-{
- m_graph->setAxisX(new QValue3DAxis);
- m_graph->setAxisY(new QValue3DAxis);
- m_graph->setAxisZ(new QValue3DAxis);
-
- //! [0]
- m_sqrtSinProxy = new QSurfaceDataProxy();
- m_sqrtSinSeries = new QSurface3DSeries(m_sqrtSinProxy);
- //! [0]
- fillSqrtSinProxy();
-
- //! [2]
- QImage heightMapImage(":/maps/mountain");
- m_heightMapProxy = new QHeightMapSurfaceDataProxy(heightMapImage);
- m_heightMapSeries = new QSurface3DSeries(m_heightMapProxy);
- m_heightMapSeries->setItemLabelFormat(QStringLiteral("(@xLabel, @zLabel): @yLabel"));
- m_heightMapProxy->setValueRanges(34.0f, 40.0f, 18.0f, 24.0f);
- //! [2]
- m_heightMapWidth = heightMapImage.width();
- m_heightMapHeight = heightMapImage.height();
-}
-
-SurfaceGraph::~SurfaceGraph()
-{
- delete m_graph;
-}
-
-//! [1]
-void SurfaceGraph::fillSqrtSinProxy()
-{
- float stepX = (sampleMax - sampleMin) / float(sampleCountX - 1);
- float stepZ = (sampleMax - sampleMin) / float(sampleCountZ - 1);
-
- QSurfaceDataArray *dataArray = new QSurfaceDataArray;
- dataArray->reserve(sampleCountZ);
- for (int i = 0 ; i < sampleCountZ ; i++) {
- QSurfaceDataRow *newRow = new QSurfaceDataRow(sampleCountX);
- // Keep values within range bounds, since just adding step can cause minor drift due
- // to the rounding errors.
- float z = qMin(sampleMax, (i * stepZ + sampleMin));
- int index = 0;
- for (int j = 0; j < sampleCountX; j++) {
- float x = qMin(sampleMax, (j * stepX + sampleMin));
- float R = qSqrt(z * z + x * x) + 0.01f;
- float y = (qSin(R) / R + 0.24f) * 1.61f;
- (*newRow)[index++].setPosition(QVector3D(x, y, z));
- }
- *dataArray << newRow;
- }
-
- m_sqrtSinProxy->resetArray(dataArray);
-}
-//! [1]
-
-void SurfaceGraph::enableSqrtSinModel(bool enable)
-{
- if (enable) {
- //! [3]
- m_sqrtSinSeries->setDrawMode(QSurface3DSeries::DrawSurfaceAndWireframe);
- m_sqrtSinSeries->setFlatShadingEnabled(true);
-
- m_graph->axisX()->setLabelFormat("%.2f");
- m_graph->axisZ()->setLabelFormat("%.2f");
- m_graph->axisX()->setRange(sampleMin, sampleMax);
- m_graph->axisY()->setRange(0.0f, 2.0f);
- m_graph->axisZ()->setRange(sampleMin, sampleMax);
- m_graph->axisX()->setLabelAutoRotation(30);
- m_graph->axisY()->setLabelAutoRotation(90);
- m_graph->axisZ()->setLabelAutoRotation(30);
-
- m_graph->removeSeries(m_heightMapSeries);
- m_graph->addSeries(m_sqrtSinSeries);
- //! [3]
-
- //! [8]
- // Reset range sliders for Sqrt&Sin
- m_rangeMinX = sampleMin;
- m_rangeMinZ = sampleMin;
- m_stepX = (sampleMax - sampleMin) / float(sampleCountX - 1);
- m_stepZ = (sampleMax - sampleMin) / float(sampleCountZ - 1);
- m_axisMinSliderX->setMaximum(sampleCountX - 2);
- m_axisMinSliderX->setValue(0);
- m_axisMaxSliderX->setMaximum(sampleCountX - 1);
- m_axisMaxSliderX->setValue(sampleCountX - 1);
- m_axisMinSliderZ->setMaximum(sampleCountZ - 2);
- m_axisMinSliderZ->setValue(0);
- m_axisMaxSliderZ->setMaximum(sampleCountZ - 1);
- m_axisMaxSliderZ->setValue(sampleCountZ - 1);
- //! [8]
- }
-}
-
-void SurfaceGraph::enableHeightMapModel(bool enable)
-{
- if (enable) {
- //! [4]
- m_heightMapSeries->setDrawMode(QSurface3DSeries::DrawSurface);
- m_heightMapSeries->setFlatShadingEnabled(false);
-
- m_graph->axisX()->setLabelFormat("%.1f N");
- m_graph->axisZ()->setLabelFormat("%.1f E");
- m_graph->axisX()->setRange(34.0f, 40.0f);
- m_graph->axisY()->setAutoAdjustRange(true);
- m_graph->axisZ()->setRange(18.0f, 24.0f);
-
- m_graph->axisX()->setTitle(QStringLiteral("Latitude"));
- m_graph->axisY()->setTitle(QStringLiteral("Height"));
- m_graph->axisZ()->setTitle(QStringLiteral("Longitude"));
-
- m_graph->removeSeries(m_sqrtSinSeries);
- m_graph->addSeries(m_heightMapSeries);
- //! [4]
-
- // Reset range sliders for height map
- int mapGridCountX = m_heightMapWidth / heightMapGridStepX;
- int mapGridCountZ = m_heightMapHeight / heightMapGridStepZ;
- m_rangeMinX = 34.0f;
- m_rangeMinZ = 18.0f;
- m_stepX = 6.0f / float(mapGridCountX - 1);
- m_stepZ = 6.0f / float(mapGridCountZ - 1);
- m_axisMinSliderX->setMaximum(mapGridCountX - 2);
- m_axisMinSliderX->setValue(0);
- m_axisMaxSliderX->setMaximum(mapGridCountX - 1);
- m_axisMaxSliderX->setValue(mapGridCountX - 1);
- m_axisMinSliderZ->setMaximum(mapGridCountZ - 2);
- m_axisMinSliderZ->setValue(0);
- m_axisMaxSliderZ->setMaximum(mapGridCountZ - 1);
- m_axisMaxSliderZ->setValue(mapGridCountZ - 1);
- }
-}
-
-void SurfaceGraph::adjustXMin(int min)
-{
- float minX = m_stepX * float(min) + m_rangeMinX;
-
- int max = m_axisMaxSliderX->value();
- if (min >= max) {
- max = min + 1;
- m_axisMaxSliderX->setValue(max);
- }
- float maxX = m_stepX * max + m_rangeMinX;
-
- setAxisXRange(minX, maxX);
-}
-
-void SurfaceGraph::adjustXMax(int max)
-{
- float maxX = m_stepX * float(max) + m_rangeMinX;
-
- int min = m_axisMinSliderX->value();
- if (max <= min) {
- min = max - 1;
- m_axisMinSliderX->setValue(min);
- }
- float minX = m_stepX * min + m_rangeMinX;
-
- setAxisXRange(minX, maxX);
-}
-
-void SurfaceGraph::adjustZMin(int min)
-{
- float minZ = m_stepZ * float(min) + m_rangeMinZ;
-
- int max = m_axisMaxSliderZ->value();
- if (min >= max) {
- max = min + 1;
- m_axisMaxSliderZ->setValue(max);
- }
- float maxZ = m_stepZ * max + m_rangeMinZ;
-
- setAxisZRange(minZ, maxZ);
-}
-
-void SurfaceGraph::adjustZMax(int max)
-{
- float maxX = m_stepZ * float(max) + m_rangeMinZ;
-
- int min = m_axisMinSliderZ->value();
- if (max <= min) {
- min = max - 1;
- m_axisMinSliderZ->setValue(min);
- }
- float minX = m_stepZ * min + m_rangeMinZ;
-
- setAxisZRange(minX, maxX);
-}
-
-//! [5]
-void SurfaceGraph::setAxisXRange(float min, float max)
-{
- m_graph->axisX()->setRange(min, max);
-}
-
-void SurfaceGraph::setAxisZRange(float min, float max)
-{
- m_graph->axisZ()->setRange(min, max);
-}
-//! [5]
-
-//! [6]
-void SurfaceGraph::changeTheme(int theme)
-{
- m_graph->activeTheme()->setType(Q3DTheme::Theme(theme));
-}
-//! [6]
-
-void SurfaceGraph::setBlackToYellowGradient()
-{
- //! [7]
- QLinearGradient gr;
- gr.setColorAt(0.0, Qt::black);
- gr.setColorAt(0.33, Qt::blue);
- gr.setColorAt(0.67, Qt::red);
- gr.setColorAt(1.0, Qt::yellow);
-
- m_graph->seriesList().at(0)->setBaseGradient(gr);
- m_graph->seriesList().at(0)->setColorStyle(Q3DTheme::ColorStyleRangeGradient);
- //! [7]
-}
-
-void SurfaceGraph::setGreenToRedGradient()
-{
- QLinearGradient gr;
- gr.setColorAt(0.0, Qt::darkGreen);
- gr.setColorAt(0.5, Qt::yellow);
- gr.setColorAt(0.8, Qt::red);
- gr.setColorAt(1.0, Qt::darkRed);
-
- m_graph->seriesList().at(0)->setBaseGradient(gr);
- m_graph->seriesList().at(0)->setColorStyle(Q3DTheme::ColorStyleRangeGradient);
-}
-
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