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qtgraphs/examples/graphs/3d/widgetgraphgallery/surfacegraphmodifier.cpp

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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "surfacegraphmodifier.h"
#include "highlightseries.h"
#include "topographicseries.h"
#include <QtCore/qmath.h>
#include <QtGraphs/qgraphstheme.h>
#include <QtGraphs/qvalue3daxis.h>
#include <QtGui/qimage.h>
#include <QtGui/qquaternion.h>
using namespace Qt::StringLiterals;
const int sampleCountX = 150;
const int sampleCountZ = 150;
const int heightMapGridStepX = 6;
const int heightMapGridStepZ = 6;
const float sampleMin = -8.f;
const float sampleMax = 8.f;
const float areaWidth = 8000.f;
const float areaHeight = 8000.f;
const float aspectRatio = 0.1389f;
const float minRange = areaWidth * 0.49f;
SurfaceGraphModifier::SurfaceGraphModifier(Q3DSurfaceWidgetItem *surface, QLabel *label, QObject *parent)
: QObject(parent)
, m_graph(surface)
, m_textField(label)
, m_aspectRatio(aspectRatio)
{
m_graph->setCameraZoomLevel(85.f);
m_graph->setCameraPreset(QtGraphs3D::CameraPreset::IsometricRight);
m_graph->activeTheme()->setTheme(QGraphsTheme::Theme::MixSeries);
m_graph->activeTheme()->setLabelBackgroundVisible(false);
m_graph->activeTheme()->setLabelBorderVisible(false);
m_graph->setAxisX(new QValue3DAxis);
m_graph->setAxisY(new QValue3DAxis);
m_graph->setAxisZ(new QValue3DAxis);
//
// Sqrt Sin
//
//! [0]
m_sqrtSinProxy = new QSurfaceDataProxy();
m_sqrtSinSeries = new QSurface3DSeries(m_sqrtSinProxy);
//! [0]
fillSqrtSinProxy();
//
// Multisurface heightmap
//
//! [2]
// Create the first surface layer
QImage heightMapImageOne(":/data/layer_1.png");
m_heightMapProxyOne = new QHeightMapSurfaceDataProxy(heightMapImageOne);
m_heightMapSeriesOne = new QSurface3DSeries(m_heightMapProxyOne);
m_heightMapSeriesOne->setItemLabelFormat(u"(@xLabel, @zLabel): @yLabel"_s);
m_heightMapProxyOne->setValueRanges(34.f, 40.f, 18.f, 24.f);
//! [2]
// Create the other 2 surface layers
QImage heightMapImageTwo(":/data/layer_2.png");
m_heightMapProxyTwo = new QHeightMapSurfaceDataProxy(heightMapImageTwo);
m_heightMapSeriesTwo = new QSurface3DSeries(m_heightMapProxyTwo);
m_heightMapSeriesTwo->setItemLabelFormat(u"(@xLabel, @zLabel): @yLabel"_s);
m_heightMapProxyTwo->setValueRanges(34.f, 40.f, 18.f, 24.f);
QImage heightMapImageThree(":/data/layer_3.png");
m_heightMapProxyThree = new QHeightMapSurfaceDataProxy(heightMapImageThree);
m_heightMapSeriesThree = new QSurface3DSeries(m_heightMapProxyThree);
m_heightMapSeriesThree->setItemLabelFormat(u"(@xLabel, @zLabel): @yLabel"_s);
m_heightMapProxyThree->setValueRanges(34.f, 40.f, 18.f, 24.f);
// The images are the same size, so it's enough to get the dimensions from one
m_heightMapWidth = heightMapImageOne.width();
m_heightMapHeight = heightMapImageOne.height();
// Set the gradients for multi-surface layers
QLinearGradient grOne;
grOne.setColorAt(0., Qt::black);
grOne.setColorAt(0.38, Qt::darkYellow);
grOne.setColorAt(0.39, Qt::darkGreen);
grOne.setColorAt(0.5, Qt::darkGray);
grOne.setColorAt(1., Qt::gray);
m_heightMapSeriesOne->setBaseGradient(grOne);
m_heightMapSeriesOne->setColorStyle(QGraphsTheme::ColorStyle::RangeGradient);
QLinearGradient grTwo;
grTwo.setColorAt(0.39, Qt::blue);
grTwo.setColorAt(0.4, Qt::white);
m_heightMapSeriesTwo->setBaseGradient(grTwo);
m_heightMapSeriesTwo->setColorStyle(QGraphsTheme::ColorStyle::RangeGradient);
QLinearGradient grThree;
grThree.setColorAt(0., Qt::white);
grThree.setColorAt(0.05, Qt::black);
m_heightMapSeriesThree->setBaseGradient(grThree);
m_heightMapSeriesThree->setColorStyle(QGraphsTheme::ColorStyle::RangeGradient);
// Custom items and label
connect(m_graph,
&Q3DGraphsWidgetItem::selectedElementChanged,
this,
&SurfaceGraphModifier::handleElementSelected);
m_selectionAnimation = new QPropertyAnimation(this);
m_selectionAnimation->setPropertyName("scaling");
m_selectionAnimation->setDuration(500);
m_selectionAnimation->setLoopCount(-1);
QFont titleFont = QFont("Century Gothic", 30);
titleFont.setBold(true);
m_titleLabel = new QCustom3DLabel("Oil Rigs on Imaginary Sea",
titleFont,
QVector3D(0.f, 1.2f, 0.f),
QVector3D(1.f, 1.f, 0.f),
QQuaternion());
m_titleLabel->setPositionAbsolute(true);
m_titleLabel->setFacingCamera(true);
m_titleLabel->setBackgroundColor(QColor(0x66cdaa));
m_graph->addCustomItem(m_titleLabel);
m_titleLabel->setVisible(false);
// Make two of the custom object visible
toggleItemOne(true);
toggleItemTwo(true);
//
// Topographic map
//
m_topography = new TopographicSeries();
m_topography->setTopographyFile(":/data/topography.png", areaWidth, areaHeight);
m_topography->setItemLabelFormat(u"@yLabel m"_s);
m_highlight = new HighlightSeries();
m_highlight->setTopographicSeries(m_topography);
m_highlight->setMinHeight(minRange * aspectRatio);
m_highlight->handleGradientChange(areaWidth * aspectRatio);
//! [16]
QObject::connect(m_graph->axisY(),
&QValue3DAxis::maxChanged,
m_highlight,
&HighlightSeries::handleGradientChange);
//! [16]
m_areaMinValue = 0.f;
m_areaMaxValue = areaWidth;
m_axisXMinValue = m_areaMinValue;
m_axisXMaxValue = m_areaMaxValue;
m_axisZMinValue = m_areaMinValue;
m_axisZMaxValue = m_areaMaxValue;
m_axisXMinRange = minRange;
m_axisZMinRange = minRange;
QObject::connect(m_graph,
&Q3DGraphsWidgetItem::dragged,
this,
&SurfaceGraphModifier::handleAxisDragging);
QObject::connect(m_graph, &Q3DGraphsWidgetItem::wheel, this, &SurfaceGraphModifier::onWheel);
}
SurfaceGraphModifier::~SurfaceGraphModifier() = default;
void SurfaceGraphModifier::fillSqrtSinProxy()
{
float stepX = (sampleMax - sampleMin) / float(sampleCountX - 1);
float stepZ = (sampleMax - sampleMin) / float(sampleCountZ - 1);
//! [1]
QSurfaceDataArray dataArray;
dataArray.reserve(sampleCountZ);
for (int i = 0; i < sampleCountZ; ++i) {
QSurfaceDataRow newRow;
newRow.reserve(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));
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.append(QSurfaceDataItem(x, y, z));
}
dataArray.append(newRow);
}
m_sqrtSinProxy->resetArray(dataArray);
//! [1]
}
void SurfaceGraphModifier::enableSqrtSinModel(bool enable)
{
if (enable) {
//! [3]
m_sqrtSinSeries->setDrawMode(QSurface3DSeries::DrawSurfaceAndWireframe);
m_sqrtSinSeries->setShading(QSurface3DSeries::Shading::Flat);
m_graph->axisX()->setLabelFormat("%.2f");
m_graph->axisZ()->setLabelFormat("%.2f");
m_graph->axisX()->setRange(sampleMin, sampleMax);
m_graph->axisY()->setRange(0.f, 2.f);
m_graph->axisZ()->setRange(sampleMin, sampleMax);
m_graph->axisX()->setLabelAutoAngle(30.f);
m_graph->axisY()->setLabelAutoAngle(90.f);
m_graph->axisZ()->setLabelAutoAngle(30.f);
m_graph->removeSeries(m_heightMapSeriesOne);
m_graph->removeSeries(m_heightMapSeriesTwo);
m_graph->removeSeries(m_heightMapSeriesThree);
m_graph->removeSeries(m_topography);
m_graph->removeSeries(m_highlight);
m_graph->addSeries(m_sqrtSinSeries);
//! [3]
m_titleLabel->setVisible(false);
m_graph->axisX()->setTitleVisible(false);
m_graph->axisY()->setTitleVisible(false);
m_graph->axisZ()->setTitleVisible(false);
m_graph->axisX()->setTitle({});
m_graph->axisY()->setTitle({});
m_graph->axisZ()->setTitle({});
QObject::disconnect(m_graph,
&Q3DGraphsWidgetItem::dragged,
this,
&SurfaceGraphModifier::handleAxisDragging);
QObject::disconnect(m_graph,
&Q3DGraphsWidgetItem::wheel,
this,
&SurfaceGraphModifier::onWheel);
m_graph->setDefaultInputHandler();
m_graph->setZoomEnabled(true);
//! [6]
// 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->setMinimum(0);
m_axisMinSliderX->setMaximum(sampleCountX - 2);
m_axisMinSliderX->setValue(0);
m_axisMaxSliderX->setMinimum(1);
m_axisMaxSliderX->setMaximum(sampleCountX - 1);
m_axisMaxSliderX->setValue(sampleCountX - 1);
m_axisMinSliderZ->setMinimum(0);
m_axisMinSliderZ->setMaximum(sampleCountZ - 2);
m_axisMinSliderZ->setValue(0);
m_axisMaxSliderZ->setMinimum(1);
m_axisMaxSliderZ->setMaximum(sampleCountZ - 1);
m_axisMaxSliderZ->setValue(sampleCountZ - 1);
//! [6]
}
}
void SurfaceGraphModifier::enableHeightMapModel(bool enable)
{
if (enable) {
m_heightMapSeriesOne->setDrawMode(QSurface3DSeries::DrawSurface);
m_heightMapSeriesOne->setShading(QSurface3DSeries::Shading::Smooth);
m_heightMapSeriesTwo->setDrawMode(QSurface3DSeries::DrawSurface);
m_heightMapSeriesTwo->setShading(QSurface3DSeries::Shading::Smooth);
m_heightMapSeriesThree->setDrawMode(QSurface3DSeries::DrawSurface);
m_heightMapSeriesThree->setShading(QSurface3DSeries::Shading::Smooth);
m_graph->axisX()->setLabelFormat("%.1f N");
m_graph->axisZ()->setLabelFormat("%.1f E");
m_graph->axisX()->setRange(34.f, 40.f);
//! [4]
m_graph->axisY()->setAutoAdjustRange(true);
//! [4]
m_graph->axisZ()->setRange(18.f, 24.f);
m_graph->axisX()->setTitle(u"Latitude"_s);
m_graph->axisY()->setTitle(u"Height"_s);
m_graph->axisZ()->setTitle(u"Longitude"_s);
m_graph->removeSeries(m_sqrtSinSeries);
m_graph->removeSeries(m_topography);
m_graph->removeSeries(m_highlight);
m_graph->addSeries(m_heightMapSeriesOne);
m_graph->addSeries(m_heightMapSeriesTwo);
m_graph->addSeries(m_heightMapSeriesThree);
QObject::disconnect(m_graph,
&Q3DGraphsWidgetItem::dragged,
this,
&SurfaceGraphModifier::handleAxisDragging);
QObject::disconnect(m_graph,
&Q3DGraphsWidgetItem::wheel,
this,
&SurfaceGraphModifier::onWheel);
m_graph->setDefaultInputHandler();
m_graph->setZoomEnabled(true);
m_titleLabel->setVisible(true);
m_graph->axisX()->setTitleVisible(true);
m_graph->axisY()->setTitleVisible(true);
m_graph->axisZ()->setTitleVisible(true);
// Reset range sliders for height map
int mapGridCountX = m_heightMapWidth / heightMapGridStepX;
int mapGridCountZ = m_heightMapHeight / heightMapGridStepZ;
m_rangeMinX = 34.f;
m_rangeMinZ = 18.f;
m_stepX = 6.f / float(mapGridCountX - 1);
m_stepZ = 6.f / float(mapGridCountZ - 1);
m_axisMinSliderX->setMinimum(0);
m_axisMinSliderX->setMaximum(mapGridCountX - 2);
m_axisMinSliderX->setValue(0);
m_axisMaxSliderX->setMinimum(1);
m_axisMaxSliderX->setMaximum(mapGridCountX - 1);
m_axisMaxSliderX->setValue(mapGridCountX - 1);
m_axisMinSliderZ->setMinimum(0);
m_axisMinSliderZ->setMaximum(mapGridCountZ - 2);
m_axisMinSliderZ->setValue(0);
m_axisMaxSliderZ->setMinimum(1);
m_axisMaxSliderZ->setMaximum(mapGridCountZ - 1);
m_axisMaxSliderZ->setValue(mapGridCountZ - 1);
}
}
void SurfaceGraphModifier::enableTopographyModel(bool enable)
{
if (enable) {
m_graph->axisX()->setLabelFormat("%i");
m_graph->axisZ()->setLabelFormat("%i");
m_graph->axisX()->setRange(0.f, areaWidth);
m_graph->axisY()->setRange(100.f, areaWidth * aspectRatio);
m_graph->axisZ()->setRange(0.f, areaHeight);
m_graph->axisX()->setLabelAutoAngle(30.f);
m_graph->axisY()->setLabelAutoAngle(90.f);
m_graph->axisZ()->setLabelAutoAngle(30.f);
m_graph->removeSeries(m_sqrtSinSeries);
m_graph->removeSeries(m_heightMapSeriesOne);
m_graph->removeSeries(m_heightMapSeriesTwo);
m_graph->removeSeries(m_heightMapSeriesThree);
m_graph->addSeries(m_topography);
m_graph->addSeries(m_highlight);
m_titleLabel->setVisible(false);
m_graph->axisX()->setTitleVisible(false);
m_graph->axisY()->setTitleVisible(false);
m_graph->axisZ()->setTitleVisible(false);
m_graph->axisX()->setTitle({});
m_graph->axisY()->setTitle({});
m_graph->axisZ()->setTitle({});
//! [5]
m_graph->setDragButton(Qt::LeftButton);
QObject::connect(m_graph,
&Q3DGraphsWidgetItem::dragged,
this,
&SurfaceGraphModifier::handleAxisDragging);
QObject::connect(m_graph,
&Q3DGraphsWidgetItem::wheel,
this,
&SurfaceGraphModifier::onWheel);
m_graph->setZoomEnabled(false);
//! [5]
// Reset range sliders for topography map
m_rangeMinX = 0.f;
m_rangeMinZ = 0.f;
m_stepX = 1.f;
m_stepZ = 1.f;
m_axisMinSliderX->setMinimum(0);
m_axisMinSliderX->setMaximum(areaWidth - 200);
m_axisMinSliderX->setValue(0);
m_axisMaxSliderX->setMinimum(200);
m_axisMaxSliderX->setMaximum(areaWidth);
m_axisMaxSliderX->setValue(areaWidth);
m_axisMinSliderZ->setMinimum(0);
m_axisMinSliderZ->setMaximum(areaHeight - 200);
m_axisMinSliderZ->setValue(0);
m_axisMaxSliderZ->setMinimum(200);
m_axisMaxSliderZ->setMaximum(areaHeight);
m_axisMaxSliderZ->setValue(areaHeight);
}
}
void SurfaceGraphModifier::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 SurfaceGraphModifier::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 SurfaceGraphModifier::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 SurfaceGraphModifier::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);
}
//! [7]
void SurfaceGraphModifier::setAxisXRange(float min, float max)
{
m_graph->axisX()->setRange(min, max);
}
//! [7]
void SurfaceGraphModifier::setAxisZRange(float min, float max)
{
m_graph->axisZ()->setRange(min, max);
}
void SurfaceGraphModifier::setBlackToYellowGradient()
{
//! [8]
QLinearGradient gr;
gr.setColorAt(0.f, Qt::black);
gr.setColorAt(0.33f, Qt::blue);
gr.setColorAt(0.67f, Qt::red);
gr.setColorAt(1.f, Qt::yellow);
m_sqrtSinSeries->setBaseGradient(gr);
m_sqrtSinSeries->setColorStyle(QGraphsTheme::ColorStyle::RangeGradient);
//! [8]
}
void SurfaceGraphModifier::setGreenToRedGradient()
{
QLinearGradient gr;
gr.setColorAt(0.f, Qt::darkGreen);
gr.setColorAt(0.5f, Qt::yellow);
gr.setColorAt(0.8f, Qt::red);
gr.setColorAt(1.f, Qt::darkRed);
m_sqrtSinSeries->setBaseGradient(gr);
m_sqrtSinSeries->setColorStyle(QGraphsTheme::ColorStyle::RangeGradient);
}
void SurfaceGraphModifier::toggleItemOne(bool show)
{
//! [10]
QVector3D positionOne = QVector3D(39.f, 77.f, 19.2f);
//! [10]
QVector3D positionOnePipe = QVector3D(39.f, 45.f, 19.2f);
QVector3D positionOneLabel = QVector3D(39.f, 107.f, 19.2f);
if (show) {
//! [9]
QImage color = QImage(2, 2, QImage::Format_RGB32);
color.fill(Qt::red);
//! [9]
//! [11]
auto *item = new QCustom3DItem(":/data/oilrig.mesh",
positionOne,
QVector3D(0.0125f, 0.0125f, 0.0125f),
QQuaternion::fromAxisAndAngle(0.f, 1.f, 0.f, 45.f),
color);
//! [11]
//! [12]
m_graph->addCustomItem(item);
//! [12]
item = new QCustom3DItem(":/data/pipe.mesh",
positionOnePipe,
QVector3D(0.0025f, 0.25f, 0.0025f),
QQuaternion(),
color);
item->setShadowCasting(false);
m_graph->addCustomItem(item);
//! [13]
auto *label = new QCustom3DLabel();
label->setText("Oil Rig One");
label->setPosition(positionOneLabel);
label->setScaling(QVector3D(1.f, 1.f, 1.f));
m_graph->addCustomItem(label);
//! [13]
} else {
resetSelection();
//! [14]
m_graph->removeCustomItemAt(positionOne);
//! [14]
m_graph->removeCustomItemAt(positionOnePipe);
m_graph->removeCustomItemAt(positionOneLabel);
}
}
void SurfaceGraphModifier::toggleItemTwo(bool show)
{
QVector3D positionTwo = QVector3D(34.5f, 77.f, 23.4f);
QVector3D positionTwoPipe = QVector3D(34.5f, 45.f, 23.4f);
QVector3D positionTwoLabel = QVector3D(34.5f, 107.f, 23.4f);
if (show) {
QImage color = QImage(2, 2, QImage::Format_RGB32);
color.fill(Qt::red);
auto *item = new QCustom3DItem();
item->setMeshFile(":/data/oilrig.mesh");
item->setPosition(positionTwo);
item->setScaling(QVector3D(0.0125f, 0.0125f, 0.0125f));
item->setRotation(QQuaternion::fromAxisAndAngle(0.f, 1.f, 0.f, 25.f));
item->setTextureImage(color);
m_graph->addCustomItem(item);
item = new QCustom3DItem(":/data/pipe.mesh",
positionTwoPipe,
QVector3D(0.0025f, 0.25f, 0.0025f),
QQuaternion(),
color);
item->setShadowCasting(false);
m_graph->addCustomItem(item);
auto *label = new QCustom3DLabel();
label->setText("Oil Rig Two");
label->setPosition(positionTwoLabel);
label->setScaling(QVector3D(1.f, 1.f, 1.f));
m_graph->addCustomItem(label);
} else {
resetSelection();
m_graph->removeCustomItemAt(positionTwo);
m_graph->removeCustomItemAt(positionTwoPipe);
m_graph->removeCustomItemAt(positionTwoLabel);
}
}
void SurfaceGraphModifier::toggleItemThree(bool show)
{
QVector3D positionThree = QVector3D(34.5f, 86.f, 19.1f);
QVector3D positionThreeLabel = QVector3D(34.5f, 116.f, 19.1f);
if (show) {
QImage color = QImage(2, 2, QImage::Format_RGB32);
color.fill(Qt::darkMagenta);
auto *item = new QCustom3DItem();
item->setMeshFile(":/data/refinery.mesh");
item->setPosition(positionThree);
item->setScaling(QVector3D(0.02f, 0.02f, 0.02f));
item->setRotation(QQuaternion::fromAxisAndAngle(0.f, 1.f, 0.f, 75.f));
item->setTextureImage(color);
m_graph->addCustomItem(item);
auto *label = new QCustom3DLabel();
label->setText("Refinery");
label->setPosition(positionThreeLabel);
label->setScaling(QVector3D(1.f, 1.f, 1.f));
m_graph->addCustomItem(label);
} else {
resetSelection();
m_graph->removeCustomItemAt(positionThree);
m_graph->removeCustomItemAt(positionThreeLabel);
}
}
void SurfaceGraphModifier::toggleSeeThrough(bool seethrough)
{
if (seethrough) {
m_graph->seriesList().at(0)->setDrawMode(QSurface3DSeries::DrawWireframe);
m_graph->seriesList().at(1)->setDrawMode(QSurface3DSeries::DrawWireframe);
} else {
m_graph->seriesList().at(0)->setDrawMode(QSurface3DSeries::DrawSurface);
m_graph->seriesList().at(1)->setDrawMode(QSurface3DSeries::DrawSurface);
}
}
void SurfaceGraphModifier::toggleOilHighlight(bool highlight)
{
if (highlight) {
QLinearGradient grThree;
grThree.setColorAt(0.0, Qt::black);
grThree.setColorAt(0.05, Qt::red);
m_graph->seriesList().at(2)->setBaseGradient(grThree);
} else {
QLinearGradient grThree;
grThree.setColorAt(0.0, Qt::white);
grThree.setColorAt(0.05, Qt::black);
m_graph->seriesList().at(2)->setBaseGradient(grThree);
}
}
void SurfaceGraphModifier::toggleShadows(bool shadows)
{
if (shadows)
m_graph->setShadowQuality(QtGraphs3D::ShadowQuality::Medium);
else
m_graph->setShadowQuality(QtGraphs3D::ShadowQuality::None);
}
//! [15]
void SurfaceGraphModifier::toggleSurfaceTexture(bool enable)
{
if (enable)
m_topography->setTextureFile(":/data/maptexture.jpg");
else
m_topography->setTextureFile("");
}
//! [15]
void SurfaceGraphModifier::handleElementSelected(QtGraphs3D::ElementType type)
{
resetSelection();
if (type == QtGraphs3D::ElementType::CustomItem) {
QCustom3DItem *item = m_graph->selectedCustomItem();
QString text;
if (qobject_cast<QCustom3DLabel *>(item) != 0) {
text.append("Custom label: ");
} else {
QStringList split = item->meshFile().split("/");
text.append(split.last());
text.append(": ");
}
int index = m_graph->selectedCustomItemIndex();
text.append(QString::number(index));
m_textField->setText(text);
m_previouslyAnimatedItem = item;
m_previousScaling = item->scaling();
m_selectionAnimation->setTargetObject(item);
m_selectionAnimation->setStartValue(item->scaling());
m_selectionAnimation->setEndValue(item->scaling() * 1.5f);
m_selectionAnimation->start();
} else if (type == QtGraphs3D::ElementType::Series) {
QString text = "Surface (";
QSurface3DSeries *series = m_graph->selectedSeries();
if (series) {
QPoint point = series->selectedPoint();
QString posStr;
posStr.setNum(point.x());
text.append(posStr);
text.append(", ");
posStr.setNum(point.y());
text.append(posStr);
}
text.append(")");
m_textField->setText(text);
} else if (type > QtGraphs3D::ElementType::Series
&& type < QtGraphs3D::ElementType::CustomItem) {
int index = m_graph->selectedLabelIndex();
QString text;
if (type == QtGraphs3D::ElementType::AxisXLabel) {
text.append("Axis X label: ");
m_state = StateDraggingX;
} else if (type == QtGraphs3D::ElementType::AxisYLabel) {
text.append("Axis Y label: ");
m_state = StateDraggingY;
} else {
text.append("Axis Z label: ");
m_state = StateDraggingZ;
}
text.append(QString::number(index));
m_textField->setText(text);
} else {
m_textField->setText("Nothing");
m_state = StateNormal;
}
}
void SurfaceGraphModifier::resetSelection()
{
m_selectionAnimation->stop();
if (m_previouslyAnimatedItem)
m_previouslyAnimatedItem->setScaling(m_previousScaling);
m_previouslyAnimatedItem = nullptr;
}
void SurfaceGraphModifier::checkConstraints()
{
//! [19]
if (m_axisXMinValue < m_areaMinValue)
m_axisXMinValue = m_areaMinValue;
if (m_axisXMaxValue > m_areaMaxValue)
m_axisXMaxValue = m_areaMaxValue;
// Don't allow too much zoom in
if ((m_axisXMaxValue - m_axisXMinValue) < m_axisXMinRange) {
float adjust = (m_axisXMinRange - (m_axisXMaxValue - m_axisXMinValue)) / 2.f;
m_axisXMinValue -= adjust;
m_axisXMaxValue += adjust;
}
//! [19]
if (m_axisZMinValue < m_areaMinValue)
m_axisZMinValue = m_areaMinValue;
if (m_axisZMaxValue > m_areaMaxValue)
m_axisZMaxValue = m_areaMaxValue;
// Don't allow too much zoom in
if ((m_axisZMaxValue - m_axisZMinValue) < m_axisZMinRange) {
float adjust = (m_axisZMinRange - (m_axisZMaxValue - m_axisZMinValue)) / 2.f;
m_axisZMinValue -= adjust;
m_axisZMaxValue += adjust;
}
}
void SurfaceGraphModifier::handleAxisDragging(QVector2D delta)
{
float distance = 0.f;
// Get scene orientation from active camera
float xRotation = m_graph->cameraXRotation();
// Calculate directional drag multipliers based on rotation
float xMulX = qCos(qDegreesToRadians(xRotation));
float xMulY = qSin(qDegreesToRadians(xRotation));
float zMulX = qSin(qDegreesToRadians(xRotation));
float zMulY = qCos(qDegreesToRadians(xRotation));
// Get the drag amount
QPoint move = delta.toPoint();
// Adjust axes
switch (m_state) {
//! [17]
case StateDraggingX:
distance = (move.x() * xMulX - move.y() * xMulY) * m_speedModifier;
m_axisXMinValue -= distance;
m_axisXMaxValue -= distance;
if (m_axisXMinValue < m_areaMinValue) {
float dist = m_axisXMaxValue - m_axisXMinValue;
m_axisXMinValue = m_areaMinValue;
m_axisXMaxValue = m_axisXMinValue + dist;
}
if (m_axisXMaxValue > m_areaMaxValue) {
float dist = m_axisXMaxValue - m_axisXMinValue;
m_axisXMaxValue = m_areaMaxValue;
m_axisXMinValue = m_axisXMaxValue - dist;
}
m_graph->axisX()->setRange(m_axisXMinValue, m_axisXMaxValue);
break;
//! [17]
case StateDraggingZ:
distance = (move.x() * zMulX + move.y() * zMulY) * m_speedModifier;
m_axisZMinValue += distance;
m_axisZMaxValue += distance;
if (m_axisZMinValue < m_areaMinValue) {
float dist = m_axisZMaxValue - m_axisZMinValue;
m_axisZMinValue = m_areaMinValue;
m_axisZMaxValue = m_axisZMinValue + dist;
}
if (m_axisZMaxValue > m_areaMaxValue) {
float dist = m_axisZMaxValue - m_axisZMinValue;
m_axisZMaxValue = m_areaMaxValue;
m_axisZMinValue = m_axisZMaxValue - dist;
}
m_graph->axisZ()->setRange(m_axisZMinValue, m_axisZMaxValue);
break;
default:
break;
}
}
//! [18]
void SurfaceGraphModifier::onWheel(QWheelEvent *event)
{
float delta = float(event->angleDelta().y());
m_axisXMinValue += delta;
m_axisXMaxValue -= delta;
m_axisZMinValue += delta;
m_axisZMaxValue -= delta;
checkConstraints();
float y = (m_axisXMaxValue - m_axisXMinValue) * m_aspectRatio;
m_graph->axisX()->setRange(m_axisXMinValue, m_axisXMaxValue);
m_graph->axisY()->setRange(100.f, y);
m_graph->axisZ()->setRange(m_axisZMinValue, m_axisZMaxValue);
}
//! [18]
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