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-rw-r--r--examples/datavisualization/datavisualization.pro3
-rw-r--r--examples/datavisualization/volumetric/doc/src/volumetric.qdoc27
-rw-r--r--examples/datavisualization/volumetric/main.cpp105
-rw-r--r--examples/datavisualization/volumetric/volumetric.cpp179
-rw-r--r--examples/datavisualization/volumetric/volumetric.h59
-rw-r--r--examples/datavisualization/volumetric/volumetric.pro15
6 files changed, 387 insertions, 1 deletions
diff --git a/examples/datavisualization/datavisualization.pro b/examples/datavisualization/datavisualization.pro
index cb861b81..eab15b6d 100644
--- a/examples/datavisualization/datavisualization.pro
+++ b/examples/datavisualization/datavisualization.pro
@@ -21,7 +21,8 @@ SUBDIRS += qmlbars \
rotations \
draggableaxes \
customitems \
- texturesurface
+ texturesurface \
+ volumetric
}
qtHaveModule(multimedia):!android:!ios: SUBDIRS += audiolevels
diff --git a/examples/datavisualization/volumetric/doc/src/volumetric.qdoc b/examples/datavisualization/volumetric/doc/src/volumetric.qdoc
new file mode 100644
index 00000000..48651cb1
--- /dev/null
+++ b/examples/datavisualization/volumetric/doc/src/volumetric.qdoc
@@ -0,0 +1,27 @@
+/****************************************************************************
+**
+** 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
+**
+****************************************************************************/
+
+/*!
+ \example volumetric
+ \title Volumetric rendering Example
+ \ingroup qtdatavisualization_examples
+ \brief Rendering volumetric objects.
+
+ TODO
+ \section1 Example contents
+*/
diff --git a/examples/datavisualization/volumetric/main.cpp b/examples/datavisualization/volumetric/main.cpp
new file mode 100644
index 00000000..7e4c9973
--- /dev/null
+++ b/examples/datavisualization/volumetric/main.cpp
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** 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 "volumetric.h"
+
+#include <QtWidgets/QApplication>
+#include <QtWidgets/QWidget>
+#include <QtWidgets/QHBoxLayout>
+#include <QtWidgets/QVBoxLayout>
+#include <QtWidgets/QRadioButton>
+#include <QtWidgets/QSlider>
+#include <QtWidgets/QCheckBox>
+#include <QtWidgets/QLabel>
+#include <QtGui/QScreen>
+
+int main(int argc, char **argv)
+{
+ QApplication app(argc, argv);
+ Q3DScatter *graph = new Q3DScatter();
+ QWidget *container = QWidget::createWindowContainer(graph);
+
+ QSize screenSize = graph->screen()->size();
+ container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.5));
+ container->setMaximumSize(screenSize);
+ container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+ container->setFocusPolicy(Qt::StrongFocus);
+
+ QWidget *widget = new QWidget;
+ QHBoxLayout *hLayout = new QHBoxLayout(widget);
+ QVBoxLayout *vLayout = new QVBoxLayout();
+ hLayout->addWidget(container, 1);
+ hLayout->addLayout(vLayout);
+
+ widget->setWindowTitle(QStringLiteral("Volumetric Object Example"));
+
+ QCheckBox *sliceXCheckBox = new QCheckBox(widget);
+ sliceXCheckBox->setText(QStringLiteral("Slice volume on X axis"));
+ sliceXCheckBox->setChecked(false);
+ QCheckBox *sliceYCheckBox = new QCheckBox(widget);
+ sliceYCheckBox->setText(QStringLiteral("Slice volume on Y axis"));
+ sliceYCheckBox->setChecked(false);
+ QCheckBox *sliceZCheckBox = new QCheckBox(widget);
+ sliceZCheckBox->setText(QStringLiteral("Slice volume on Z axis"));
+ sliceZCheckBox->setChecked(false);
+
+ QSlider *sliceXSlider = new QSlider(Qt::Horizontal, widget);
+ sliceXSlider->setMinimum(0);
+ sliceXSlider->setMaximum(1024);
+ sliceXSlider->setValue(512);
+ sliceXSlider->setEnabled(true);
+ QSlider *sliceYSlider = new QSlider(Qt::Horizontal, widget);
+ sliceYSlider->setMinimum(0);
+ sliceYSlider->setMaximum(1024);
+ sliceYSlider->setValue(512);
+ sliceYSlider->setEnabled(true);
+ QSlider *sliceZSlider = new QSlider(Qt::Horizontal, widget);
+ sliceZSlider->setMinimum(0);
+ sliceZSlider->setMaximum(1024);
+ sliceZSlider->setValue(512);
+ sliceZSlider->setEnabled(true);
+
+ QLabel *fpsLabel = new QLabel(QStringLiteral("Fps: "), widget);
+
+ vLayout->addWidget(fpsLabel);
+ vLayout->addWidget(sliceXCheckBox);
+ vLayout->addWidget(sliceXSlider);
+ vLayout->addWidget(sliceYCheckBox);
+ vLayout->addWidget(sliceYSlider);
+ vLayout->addWidget(sliceZCheckBox);
+ vLayout->addWidget(sliceZSlider, 1, Qt::AlignTop);
+
+ VolumetricModifier *modifier = new VolumetricModifier(graph);
+ modifier->setFpsLabel(fpsLabel);
+
+ QObject::connect(sliceXCheckBox, &QCheckBox::stateChanged, modifier,
+ &VolumetricModifier::sliceX);
+ QObject::connect(sliceYCheckBox, &QCheckBox::stateChanged, modifier,
+ &VolumetricModifier::sliceY);
+ QObject::connect(sliceZCheckBox, &QCheckBox::stateChanged, modifier,
+ &VolumetricModifier::sliceZ);
+ QObject::connect(sliceXSlider, &QSlider::valueChanged, modifier,
+ &VolumetricModifier::adjustSliceX);
+ QObject::connect(sliceYSlider, &QSlider::valueChanged, modifier,
+ &VolumetricModifier::adjustSliceY);
+ QObject::connect(sliceZSlider, &QSlider::valueChanged, modifier,
+ &VolumetricModifier::adjustSliceZ);
+
+ widget->show();
+ return app.exec();
+}
diff --git a/examples/datavisualization/volumetric/volumetric.cpp b/examples/datavisualization/volumetric/volumetric.cpp
new file mode 100644
index 00000000..a9233cab
--- /dev/null
+++ b/examples/datavisualization/volumetric/volumetric.cpp
@@ -0,0 +1,179 @@
+/****************************************************************************
+**
+** 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 "volumetric.h"
+#include <QtDataVisualization/qvalue3daxis.h>
+#include <QtDataVisualization/q3dscene.h>
+#include <QtDataVisualization/q3dcamera.h>
+#include <QtDataVisualization/q3dtheme.h>
+#include <QtCore/qmath.h>
+#include <QtGui/QRgb>
+#include <QtWidgets/QLabel>
+#include <QtCore/QDebug>
+
+using namespace QtDataVisualization;
+
+const int textureSize = 256;
+
+VolumetricModifier::VolumetricModifier(Q3DScatter *scatter)
+ : m_graph(scatter),
+ m_volumeItem(0),
+ m_sliceIndexX(textureSize / 2),
+ m_sliceIndexY(textureSize / 4),
+ m_sliceIndexZ(textureSize / 2)
+{
+ m_graph->activeTheme()->setType(Q3DTheme::ThemeQt);
+ m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityNone);
+ m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront);
+ m_graph->setOrthoProjection(true);
+
+ createVolume();
+
+ m_graph->addCustomItem(m_volumeItem);
+ m_graph->setMeasureFps(true);
+
+ QObject::connect(m_graph->scene()->activeCamera(), &Q3DCamera::zoomLevelChanged, this,
+ &VolumetricModifier::handleZoomLevelChange);
+ QObject::connect(m_graph, &QAbstract3DGraph::currentFpsChanged, this,
+ &VolumetricModifier::handleFpsChange);
+}
+
+VolumetricModifier::~VolumetricModifier()
+{
+ delete m_graph;
+}
+
+void VolumetricModifier::setFpsLabel(QLabel *fpsLabel)
+{
+ m_fpsLabel = fpsLabel;
+}
+
+void VolumetricModifier::sliceX(int enabled)
+{
+ m_volumeItem->setSliceIndexX(enabled ? m_sliceIndexX : -1);
+}
+
+void VolumetricModifier::sliceY(int enabled)
+{
+ m_volumeItem->setSliceIndexY(enabled ? m_sliceIndexY : -1);
+}
+
+void VolumetricModifier::sliceZ(int enabled)
+{
+ m_volumeItem->setSliceIndexZ(enabled ? m_sliceIndexZ : -1);
+}
+
+void VolumetricModifier::adjustSliceX(int value)
+{
+ m_sliceIndexX = value / (1024 / textureSize);
+ if (m_volumeItem->sliceIndexX() != -1)
+ m_volumeItem->setSliceIndexX(m_sliceIndexX);
+}
+
+void VolumetricModifier::adjustSliceY(int value)
+{
+ m_sliceIndexY = value / (1024 / textureSize * 2);
+ if (m_volumeItem->sliceIndexY() != -1)
+ m_volumeItem->setSliceIndexY(m_sliceIndexY);
+}
+
+void VolumetricModifier::adjustSliceZ(int value)
+{
+ m_sliceIndexZ = value / (1024 / textureSize);
+ if (m_volumeItem->sliceIndexZ() != -1)
+ m_volumeItem->setSliceIndexZ(m_sliceIndexZ);
+}
+
+void VolumetricModifier::handleZoomLevelChange()
+{
+ // Zooming inside volumetric object causes ugly clipping issues, so restrict zoom level a bit
+ if (m_graph->scene()->activeCamera()->zoomLevel() > 220)
+ m_graph->scene()->activeCamera()->setZoomLevel(220);
+}
+
+void VolumetricModifier::handleFpsChange(qreal fps)
+{
+ const QString fpsFormat = QStringLiteral("Fps: %1");
+ int fps10 = int(fps * 10.0);
+ m_fpsLabel->setText(fpsFormat.arg(QString::number(qreal(fps10) / 10.0)));
+}
+
+void VolumetricModifier::createVolume()
+{
+ m_volumeItem = new QCustom3DVolume;
+ m_volumeItem->setScaling(QVector3D(2.0f, 1.0f, 2.0f));
+ m_volumeItem->setTextureWidth(textureSize);
+ m_volumeItem->setTextureHeight(textureSize / 2);
+ m_volumeItem->setTextureDepth(textureSize);
+ m_volumeItem->setTextureFormat(QImage::Format_Indexed8);
+
+ // Generate color table. First color is fully transparent used to fill outer
+ // portions of the volume. The second, red layer, is somewhat transparent.
+ // Rest of to colors are opaque.
+ QVector<QRgb> colors;
+ colors.resize(256);
+
+ colors[0] = qRgba(0, 0, 0, 0);
+ for (int i = 1; i < 256; i++) {
+ if (i < 60) {
+ colors[i] = qRgba((i * 2) + 120, 0, 0, 100);
+ } else if (i < 120) {
+ colors[i] = qRgba(0, ((i - 60) * 2) + 120, 0, 255);
+ } else if (i < 180) {
+ colors[i] = qRgba(0, 0, ((i - 120) * 2) + 120, 255);
+ } else {
+ colors[i] = qRgba(i, i, i, 255);
+ }
+ }
+ m_volumeItem->setColorTable(colors);
+
+ // Generate texture data for an half-ellipsoid.
+ // This can take a while if the dimensions are large.
+ // Note that in real world cases, the texture data is usually be supplied
+ // as a stack of slice images.
+
+ QVector<uchar> *textureData = new QVector<uchar>(textureSize * textureSize * textureSize / 2);
+
+ QVector3D midPoint(float(textureSize) / 2.0f,
+ float(textureSize) / 2.0f,
+ float(textureSize) / 2.0f);
+
+ int index = 0;
+ for (int i = 0; i < textureSize; i++) {
+ for (int j = 0; j < textureSize / 2; j++) {
+ for (int k = 0; k < textureSize; k++) {
+ int colorIndex = 0;
+ // Take a slice out of the ellipsoid
+ if (i >= textureSize / 2 || j >= textureSize / 4 || k >= textureSize / 2) {
+ QVector3D distVec = QVector3D(float(k), float(j * 2), float(i)) - midPoint;
+ float adjLen = qMin(255.0f, (distVec.length() * float(textureSize / 128)));
+ if (adjLen < 230)
+ colorIndex = 255 - int(adjLen);
+ else
+ colorIndex = 0;
+ }
+
+ (*textureData)[index] = colorIndex;
+ index++;
+ }
+ }
+ }
+
+ m_volumeItem->setTextureData(textureData);
+}
+
diff --git a/examples/datavisualization/volumetric/volumetric.h b/examples/datavisualization/volumetric/volumetric.h
new file mode 100644
index 00000000..722d4b48
--- /dev/null
+++ b/examples/datavisualization/volumetric/volumetric.h
@@ -0,0 +1,59 @@
+/****************************************************************************
+**
+** 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
+**
+****************************************************************************/
+
+#ifndef VOLUMETRICMODIFIER_H
+#define VOLUMETRICMODIFIER_H
+
+#include <QtDataVisualization/q3dscatter.h>
+#include <QtDataVisualization/qcustom3dvolume.h>
+
+class QLabel;
+
+using namespace QtDataVisualization;
+
+class VolumetricModifier : public QObject
+{
+ Q_OBJECT
+public:
+ explicit VolumetricModifier(Q3DScatter *scatter);
+ ~VolumetricModifier();
+
+ void setFpsLabel(QLabel *fpsLabel);
+
+public slots:
+ void sliceX(int enabled);
+ void sliceY(int enabled);
+ void sliceZ(int enabled);
+ void adjustSliceX(int value);
+ void adjustSliceY(int value);
+ void adjustSliceZ(int value);
+ void handleZoomLevelChange();
+ void handleFpsChange(qreal fps);
+
+private:
+ void createVolume();
+
+ Q3DScatter *m_graph;
+ QCustom3DVolume *m_volumeItem;
+ int m_sliceIndexX;
+ int m_sliceIndexY;
+ int m_sliceIndexZ;
+ QLabel *m_fpsLabel;
+};
+
+#endif
diff --git a/examples/datavisualization/volumetric/volumetric.pro b/examples/datavisualization/volumetric/volumetric.pro
new file mode 100644
index 00000000..c5e31891
--- /dev/null
+++ b/examples/datavisualization/volumetric/volumetric.pro
@@ -0,0 +1,15 @@
+android|ios {
+ error( "This example is not supported for android or ios." )
+}
+
+!include( ../examples.pri ) {
+ error( "Couldn't find the examples.pri file!" )
+}
+
+SOURCES += main.cpp volumetric.cpp
+HEADERS += volumetric.h
+
+QT += widgets
+
+OTHER_FILES += doc/src/* \
+ doc/images/*
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 02:50:21 +0000