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diff --git a/examples/datavisualization/surface/surfacegraph.cpp b/examples/datavisualization/surface/surfacegraph.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#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->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);
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-04 19:18:20 +0000