| /**************************************************************************** |
| ** |
| ** 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 |
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| ** |
| ** 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 |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "surfacegraph.h" |
| |
| #include <QtDataVisualization/QValue3DAxis> |
| #include <QtDataVisualization/Q3DTheme> |
| #include <QtGui/QImage> |
| #include <QtCore/qmath.h> |
| |
| using namespace QtDataVisualization; |
| |
| 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); |
| } |
| |