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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "volumetric.h"
++ #include <QtGraphs/qvalue3daxis.h>
++ #include <QtGraphs/qcustom3dlabel.h>
++ #include <QtCore/qmath.h>
++
++ const int lowDetailSize(256);
++ const int mediumDetailSize(512);
++ const int highDetailSize(1024);
++ const int colorTableSize(256);
++ const int layerDataSize(512);
++ const int mineShaftDiameter(1);
++
++ const int airColorIndex(254);
++ const int mineShaftColorIndex(255);
++ const int layerColorThickness(60);
++ const int heightToColorDiv(140);
++ const int magmaColorsMin(0);
++ const int magmaColorsMax(layerColorThickness);
++ const int aboveWaterGroundColorsMin(magmaColorsMax + 1);
++ const int aboveWaterGroundColorsMax(aboveWaterGroundColorsMin + layerColorThickness);
++ const int underWaterGroundColorsMin(aboveWaterGroundColorsMax + 1);
++ const int underWaterGroundColorsMax(underWaterGroundColorsMin + layerColorThickness);
++ const int waterColorsMin(underWaterGroundColorsMax + 1);
++ const int waterColorsMax(waterColorsMin + layerColorThickness);
++ const int terrainTransparency(12);
++
++ VolumetricModifier::VolumetricModifier(Q3DScatterWidgetItem *scatter)
++ : m_graph(scatter),
++ m_sliceIndexX(lowDetailSize / 2),
++ m_sliceIndexY(lowDetailSize / 4),
++ m_sliceIndexZ(lowDetailSize / 2)
++ {
++ m_graph->activeTheme()->setTheme(QGraphsTheme::Theme::QtGreenNeon);
++ m_graph->setShadowQuality(QtGraphs3D::ShadowQuality::None);
++ m_graph->setCameraPreset(QtGraphs3D::CameraPreset::IsometricLeft);
++ //! [0]
++ m_graph->setOrthoProjection(true);
++ //! [0]
++ m_graph->activeTheme()->setPlotAreaBackgroundVisible(false);
++
++ // Only allow zooming at the center and limit the zoom to 200% to avoid clipping issues
++ m_graph->setZoomAtTargetEnabled(false);
++ m_graph->setMaxCameraZoomLevel(200.0f);
++
++ toggleAreaAll(true);
++
++ m_lowDetailData
++ = new QList<uchar>(lowDetailSize * lowDetailSize * lowDetailSize / 2);
++ m_mediumDetailData
++ = new QList<uchar>(mediumDetailSize * mediumDetailSize * mediumDetailSize / 2);
++ m_highDetailData
++ = new QList<uchar>(highDetailSize * highDetailSize * highDetailSize / 2);
++
++ initHeightMap(QStringLiteral(":/heightmaps/layer_ground.png"), m_groundLayer);
++ initHeightMap(QStringLiteral(":/heightmaps/layer_water.png"), m_waterLayer);
++ initHeightMap(QStringLiteral(":/heightmaps/layer_magma.png"), m_magmaLayer);
++
++ initMineShaftArray();
++
++ createVolume(lowDetailSize, 0, lowDetailSize, m_lowDetailData);
++ excavateMineShaft(lowDetailSize, 0, m_mineShaftArray.size(), m_lowDetailData);
++
++ //! [1]
++ m_volumeItem = new QCustom3DVolume;
++ // Adjust water level to zero with a minor tweak to y-coordinate position and scaling
++ m_volumeItem->setScaling(
++ QVector3D(m_graph->axisX()->max() - m_graph->axisX()->min(),
++ (m_graph->axisY()->max() - m_graph->axisY()->min()) * 0.91f,
++ m_graph->axisZ()->max() - m_graph->axisZ()->min()));
++ m_volumeItem->setPosition(
++ QVector3D((m_graph->axisX()->max() + m_graph->axisX()->min()) / 2.0f,
++ -0.045f * (m_graph->axisY()->max() - m_graph->axisY()->min()) +
++ (m_graph->axisY()->max() + m_graph->axisY()->min()) / 2.0f,
++ (m_graph->axisZ()->max() + m_graph->axisZ()->min()) / 2.0f));
++ m_volumeItem->setScalingAbsolute(false);
++ //! [1]
++ //! [2]
++ m_volumeItem->setTextureWidth(lowDetailSize);
++ m_volumeItem->setTextureHeight(lowDetailSize / 2);
++ m_volumeItem->setTextureDepth(lowDetailSize);
++ m_volumeItem->setTextureFormat(QImage::Format_Indexed8);
++ m_volumeItem->setTextureData(new QList<uchar>(*m_lowDetailData));
++ //! [2]
++
++ // Generate color tables
++ m_colorTable1.resize(colorTableSize);
++ m_colorTable2.resize(colorTableSize);
++
++ for (int i = 0; i < colorTableSize - 2; i++) {
++ if (i < magmaColorsMax) {
++ m_colorTable1[i] = qRgba(130 - (i * 2), 0, 0, 255);
++ } else if (i < aboveWaterGroundColorsMax) {
++ m_colorTable1[i] = qRgba((i - magmaColorsMax) * 4,
++ ((i - magmaColorsMax) * 2) + 120,
++ (i - magmaColorsMax) * 5, terrainTransparency);
++ } else if (i < underWaterGroundColorsMax) {
++ m_colorTable1[i] = qRgba(((layerColorThickness - i - aboveWaterGroundColorsMax)) + 70,
++ ((layerColorThickness - i - aboveWaterGroundColorsMax) * 2) + 20,
++ ((layerColorThickness - i - aboveWaterGroundColorsMax)) + 50,
++ terrainTransparency);
++ } else if (i < waterColorsMax) {
++ m_colorTable1[i] = qRgba(0, 0, ((i - underWaterGroundColorsMax) * 2) + 120,
++ terrainTransparency);
++ } else {
++ m_colorTable1[i] = qRgba(0, 0, 0, 0); // Not used
++ }
++ }
++ m_colorTable1[airColorIndex] = qRgba(0, 0, 0, 0);
++ m_colorTable1[mineShaftColorIndex] = qRgba(50, 50, 50, 255);
++
++ // The alternate color table just has gray gradients for all terrain except water
++ for (int i = 0; i < colorTableSize - 2; i++) {
++ if (i < magmaColorsMax) {
++ m_colorTable2[i] = qRgba(((i - aboveWaterGroundColorsMax) * 2),
++ ((i - aboveWaterGroundColorsMax) * 2),
++ ((i - aboveWaterGroundColorsMax) * 2),
++ 255);
++ } else if (i < underWaterGroundColorsMax) {
++ m_colorTable2[i] = qRgba(((i - aboveWaterGroundColorsMax) * 2),
++ ((i - aboveWaterGroundColorsMax) * 2),
++ ((i - aboveWaterGroundColorsMax) * 2),
++ terrainTransparency);
++ } else if (i < waterColorsMax) {
++ m_colorTable2[i] = qRgba(0,
++ 0,
++ ((i - underWaterGroundColorsMax) * 2) + 120,
++ terrainTransparency);
++ } else {
++ m_colorTable2[i] = qRgba(0, 0, 0, 0); // Not used
++ }
++ }
++ m_colorTable2[airColorIndex] = qRgba(0, 0, 0, 0);
++ m_colorTable2[mineShaftColorIndex] = qRgba(255, 255, 0, 255);
++
++ //! [3]
++ m_volumeItem->setColorTable(m_colorTable1);
++ //! [3]
++
++ //! [4]
++ m_volumeItem->setSliceFrameGaps(QVector3D(0.01f, 0.02f, 0.01f));
++ m_volumeItem->setSliceFrameThicknesses(QVector3D(0.0025f, 0.005f, 0.0025f));
++ m_volumeItem->setSliceFrameWidths(QVector3D(0.0025f, 0.005f, 0.0025f));
++ m_volumeItem->setDrawSliceFrames(false);
++ //! [4]
++ handleSlicingChanges();
++
++ //! [5]
++ m_graph->addCustomItem(m_volumeItem);
++ //! [5]
++
++ m_timer.start(0);
++
++ QObject::connect(m_graph, &Q3DGraphsWidgetItem::currentFpsChanged, this,
++ &VolumetricModifier::handleFpsChange);
++ QObject::connect(&m_timer, &QTimer::timeout, this,
++ &VolumetricModifier::handleTimeout);
++
++ }
++
++ VolumetricModifier::~VolumetricModifier()
++ {
++ delete m_graph;
++ }
++
++ void VolumetricModifier::setFpsLabel(QLabel *fpsLabel)
++ {
++ m_fpsLabel = fpsLabel;
++ }
++
++ void VolumetricModifier::setMediumDetailRB(QRadioButton *button)
++ {
++ m_mediumDetailRB = button;
++ }
++
++ void VolumetricModifier::setHighDetailRB(QRadioButton *button)
++ {
++ m_highDetailRB = button;
++ }
++
++ void VolumetricModifier::setSliceLabels(QLabel *xLabel, QLabel *yLabel, QLabel *zLabel)
++ {
++ m_sliceLabelX = xLabel;
++ m_sliceLabelY = yLabel;
++ m_sliceLabelZ = zLabel;
++
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++
++ void VolumetricModifier::setAlphaMultiplierLabel(QLabel *label)
++ {
++ m_alphaMultiplierLabel = label;
++ }
++
++ void VolumetricModifier::sliceX(int enabled)
++ {
++ m_slicingX = enabled;
++ handleSlicingChanges();
++ }
++
++ void VolumetricModifier::sliceY(int enabled)
++ {
++ m_slicingY = enabled;
++ handleSlicingChanges();
++ }
++
++ void VolumetricModifier::sliceZ(int enabled)
++ {
++ m_slicingZ = enabled;
++ handleSlicingChanges();
++ }
++
++ void VolumetricModifier::adjustSliceX(int value)
++ {
++ if (m_volumeItem) {
++ m_sliceIndexX = value / (1024 / m_volumeItem->textureWidth());
++ if (m_sliceIndexX == m_volumeItem->textureWidth())
++ m_sliceIndexX--;
++ if (m_volumeItem->sliceIndexX() != -1)
++ //! [6]
++ m_volumeItem->setSliceIndexX(m_sliceIndexX);
++ //! [6]
++ //! [8]
++ m_sliceLabelX->setPixmap(
++ QPixmap::fromImage(m_volumeItem->renderSlice(Qt::XAxis, m_sliceIndexX)));
++ //! [8]
++ }
++ }
++
++ void VolumetricModifier::adjustSliceY(int value)
++ {
++ if (m_volumeItem) {
++ m_sliceIndexY = value / (1024 / m_volumeItem->textureHeight());
++ if (m_sliceIndexY == m_volumeItem->textureHeight())
++ m_sliceIndexY--;
++ if (m_volumeItem->sliceIndexY() != -1)
++ m_volumeItem->setSliceIndexY(m_sliceIndexY);
++ m_sliceLabelY->setPixmap(
++ QPixmap::fromImage(m_volumeItem->renderSlice(Qt::YAxis, m_sliceIndexY)));
++ }
++ }
++
++ void VolumetricModifier::adjustSliceZ(int value)
++ {
++ if (m_volumeItem) {
++ m_sliceIndexZ = value / (1024 / m_volumeItem->textureDepth());
++ if (m_sliceIndexZ == m_volumeItem->textureDepth())
++ m_sliceIndexZ--;
++ if (m_volumeItem->sliceIndexZ() != -1)
++ m_volumeItem->setSliceIndexZ(m_sliceIndexZ);
++ m_sliceLabelZ->setPixmap(
++ QPixmap::fromImage(m_volumeItem->renderSlice(Qt::ZAxis, m_sliceIndexZ)));
++ }
++ }
++
++ void VolumetricModifier::handleFpsChange(qreal fps)
++ {
++ const QString fpsFormat = QStringLiteral("FPS: %1");
++ int fps10 = int(fps * 10.0);
++ m_fpsLabel->setText(fpsFormat.arg(qreal(fps10) / 10.0));
++ }
++
++ void VolumetricModifier::handleTimeout()
++ {
++ if (!m_mediumDetailRB->isEnabled()) {
++ if (m_mediumDetailIndex != mediumDetailSize) {
++ m_mediumDetailIndex = createVolume(mediumDetailSize, m_mediumDetailIndex, 4,
++ m_mediumDetailData);
++ } else if (m_mediumDetailShaftIndex != m_mineShaftArray.size()) {
++ m_mediumDetailShaftIndex = excavateMineShaft(mediumDetailSize, m_mediumDetailShaftIndex,
++ 1, m_mediumDetailData );
++ } else {
++ m_mediumDetailRB->setEnabled(true);
++ QString label = QStringLiteral("Medium (%1x%2x%1)");
++ m_mediumDetailRB->setText(label.arg(mediumDetailSize).arg(mediumDetailSize / 2));
++ }
++ } else if (!m_highDetailRB->isEnabled()) {
++ if (m_highDetailIndex != highDetailSize) {
++ m_highDetailIndex = createVolume(highDetailSize, m_highDetailIndex, 1,
++ m_highDetailData);
++ } else if (m_highDetailShaftIndex != m_mineShaftArray.size()) {
++ m_highDetailShaftIndex = excavateMineShaft(highDetailSize, m_highDetailShaftIndex, 1,
++ m_highDetailData);
++ } else {
++ m_highDetailRB->setEnabled(true);
++ QString label = QStringLiteral("High (%1x%2x%1)");
++ m_highDetailRB->setText(label.arg(highDetailSize).arg(highDetailSize / 2));
++ m_timer.stop();
++ }
++ }
++ }
++
++ void VolumetricModifier::toggleLowDetail(bool enabled)
++ {
++ if (enabled && m_volumeItem) {
++ m_volumeItem->setTextureData(new QList<uchar>(*m_lowDetailData));
++ m_volumeItem->setTextureDimensions(lowDetailSize, lowDetailSize / 2, lowDetailSize);
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::toggleMediumDetail(bool enabled)
++ {
++ if (enabled && m_volumeItem) {
++ m_volumeItem->setTextureData(new QList<uchar>(*m_mediumDetailData));
++ m_volumeItem->setTextureDimensions(mediumDetailSize, mediumDetailSize / 2, mediumDetailSize);
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::toggleHighDetail(bool enabled)
++ {
++ if (enabled && m_volumeItem) {
++ m_volumeItem->setTextureData(new QList<uchar>(*m_highDetailData));
++ m_volumeItem->setTextureDimensions(highDetailSize, highDetailSize / 2, highDetailSize);
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::setFpsMeasurement(bool enabled)
++ {
++ m_graph->setMeasureFps(enabled);
++ if (enabled)
++ m_fpsLabel->setText(QStringLiteral("Measuring..."));
++ else
++ m_fpsLabel->setText(QString());
++ }
++
++ void VolumetricModifier::setSliceSliders(QSlider *sliderX, QSlider *sliderY, QSlider *sliderZ)
++ {
++ m_sliceSliderX = sliderX;
++ m_sliceSliderY = sliderY;
++ m_sliceSliderZ = sliderZ;
++
++ // Set sliders to interesting values
++ m_sliceSliderX->setValue(715);
++ m_sliceSliderY->setValue(612);
++ m_sliceSliderZ->setValue(715);
++ }
++
++ void VolumetricModifier::changeColorTable(int enabled)
++ {
++ if (m_volumeItem) {
++ if (enabled)
++ m_volumeItem->setColorTable(m_colorTable2);
++ else
++ m_volumeItem->setColorTable(m_colorTable1);
++
++ m_usingPrimaryTable = !enabled;
++
++ // Rerender image labels
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::setPreserveOpacity(bool enabled)
++ {
++
++ if (m_volumeItem) {
++ //! [10]
++ m_volumeItem->setPreserveOpacity(enabled);
++ //! [10]
++
++ // Rerender image labels
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::setTransparentGround(bool enabled)
++ {
++ if (m_volumeItem) {
++ //! [11]
++ int newAlpha = enabled ? terrainTransparency : 255;
++ for (int i = aboveWaterGroundColorsMin; i < underWaterGroundColorsMax; i++) {
++ QRgb oldColor1 = m_colorTable1.at(i);
++ QRgb oldColor2 = m_colorTable2.at(i);
++ m_colorTable1[i] = qRgba(qRed(oldColor1), qGreen(oldColor1), qBlue(oldColor1), newAlpha);
++ m_colorTable2[i] = qRgba(qRed(oldColor2), qGreen(oldColor2), qBlue(oldColor2), newAlpha);
++ }
++ if (m_usingPrimaryTable)
++ m_volumeItem->setColorTable(m_colorTable1);
++ else
++ m_volumeItem->setColorTable(m_colorTable2);
++ //! [11]
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::setUseHighDefShader(bool enabled)
++ {
++ if (m_volumeItem) {
++ //! [12]
++ m_volumeItem->setUseHighDefShader(enabled);
++ //! [12]
++ }
++ }
++
++ void VolumetricModifier::setUsePerspectiveCamera(bool enabled)
++ {
++ if (m_graph)
++ m_graph->setOrthoProjection(!enabled);
++ }
++
++ void VolumetricModifier::adjustAlphaMultiplier(int value)
++ {
++ if (m_volumeItem) {
++ float mult;
++ if (value > 100)
++ mult = float(value - 99) / 2.0f;
++ else
++ mult = float(value) / float(500 - value * 4);
++ //! [9]
++ m_volumeItem->setAlphaMultiplier(mult);
++ //! [9]
++ QString labelFormat = QStringLiteral("Alpha multiplier: %1");
++ m_alphaMultiplierLabel->setText(labelFormat.arg(
++ QString::number(m_volumeItem->alphaMultiplier(), 'f', 3)));
++
++ // Rerender image labels
++ adjustSliceX(m_sliceSliderX->value());
++ adjustSliceY(m_sliceSliderY->value());
++ adjustSliceZ(m_sliceSliderZ->value());
++ }
++ }
++
++ void VolumetricModifier::toggleAreaAll(bool enabled)
++ {
++ if (enabled) {
++ m_graph->axisX()->setRange(0.0f, 1000.0f);
++ m_graph->axisY()->setRange(-600.0f, 600.0f);
++ m_graph->axisZ()->setRange(0.0f, 1000.0f);
++ m_graph->axisX()->setSegmentCount(5);
++ m_graph->axisY()->setSegmentCount(6);
++ m_graph->axisZ()->setSegmentCount(5);
++ }
++ }
++
++ void VolumetricModifier::toggleAreaMine(bool enabled)
++ {
++ if (enabled) {
++ m_graph->axisX()->setRange(350.0f, 850.0f);
++ m_graph->axisY()->setRange(-500.0f, 100.0f);
++ m_graph->axisZ()->setRange(350.0f, 900.0f);
++ m_graph->axisX()->setSegmentCount(10);
++ m_graph->axisY()->setSegmentCount(6);
++ m_graph->axisZ()->setSegmentCount(11);
++ }
++ }
++
++ void VolumetricModifier::toggleAreaMountain(bool enabled)
++ {
++ if (enabled) {
++ m_graph->axisX()->setRange(300.0f, 600.0f);
++ m_graph->axisY()->setRange(-100.0f, 400.0f);
++ m_graph->axisZ()->setRange(300.0f, 600.0f);
++ m_graph->axisX()->setSegmentCount(9);
++ m_graph->axisY()->setSegmentCount(5);
++ m_graph->axisZ()->setSegmentCount(9);
++ }
++ }
++
++ void VolumetricModifier::setDrawSliceFrames(int enabled)
++ {
++ if (m_volumeItem)
++ m_volumeItem->setDrawSliceFrames(enabled);
++ }
++
++ void VolumetricModifier::initHeightMap(QString fileName, QList<uchar> &layerData)
++ {
++ QImage heightImage(fileName);
++
++ layerData.resize(layerDataSize * layerDataSize);
++ const uchar *bits = heightImage.bits();
++ int index = 0;
++ QList<QRgb> colorTable = heightImage.colorTable();
++ for (int i = 0; i < layerDataSize; i++) {
++ for (int j = 0; j < layerDataSize; j++) {
++ layerData[index] = qRed(colorTable.at(bits[index]));
++ index++;
++ }
++ }
++ }
++
++ int VolumetricModifier::createVolume(int textureSize, int startIndex, int count,
++ QList<uchar> *textureData)
++ {
++ // Generate volume from layer data.
++ int index = startIndex * textureSize * textureSize / 2.0f;
++ int endIndex = startIndex + count;
++ if (endIndex > textureSize)
++ endIndex = textureSize;
++ QList<uchar> magmaHeights(textureSize);
++ QList<uchar> waterHeights(textureSize);
++ QList<uchar> groundHeights(textureSize);
++ float multiplier = float(layerDataSize) / float(textureSize);
++ for (int i = startIndex; i < endIndex; i++) {
++ // Generate layer height arrays
++ for (int l = 0; l < textureSize; l++) {
++ int layerIndex = (int(i * multiplier) * layerDataSize + int(l * multiplier));
++ magmaHeights[l] = int(m_magmaLayer.at(layerIndex));
++ waterHeights[l] = int(m_waterLayer.at(layerIndex));
++ groundHeights[l] = int(m_groundLayer.at(layerIndex));
++ }
++ for (int j = 0; j < textureSize / 2; j++) {
++ for (int k = 0; k < textureSize; k++) {
++ int colorIndex;
++ int height((layerDataSize - (j * 2 * multiplier)) / 2);
++ if (height < magmaHeights.at(k)) {
++ // Magma layer
++ colorIndex = int((float(height) / heightToColorDiv)
++ * float(layerColorThickness)) + magmaColorsMin;
++ } else if (height < groundHeights.at(k) && height < waterHeights.at(k)) {
++ // Ground layer below water
++ colorIndex = int((float(waterHeights.at(k) - height) / heightToColorDiv)
++ * float(layerColorThickness)) + underWaterGroundColorsMin;
++ } else if (height < waterHeights.at(k)) {
++ // Water layer where water goes over ground
++ colorIndex = int((float(height - magmaHeights.at(k)) / heightToColorDiv)
++ * float(layerColorThickness)) + waterColorsMin;
++ } else if (height <= groundHeights.at(k)) {
++ // Ground above water
++ colorIndex = int((float(height - waterHeights.at(k)) / heightToColorDiv)
++ * float(layerColorThickness)) + aboveWaterGroundColorsMin;
++ } else {
++ // Rest is air
++ colorIndex = airColorIndex;
++ }
++
++ (*textureData)[index] = colorIndex;
++ index++;
++ }
++ }
++ }
++ return endIndex;
++ }
++
++ int VolumetricModifier::excavateMineShaft(int textureSize, int startIndex, int count,
++ QList<uchar> *textureData)
++ {
++ int endIndex = startIndex + count;
++ if (endIndex > m_mineShaftArray.size())
++ endIndex = m_mineShaftArray.size();
++ int shaftSize = mineShaftDiameter * textureSize / lowDetailSize;
++ for (int i = startIndex; i < endIndex; i++) {
++ QVector3D shaftStart(m_mineShaftArray.at(i).first);
++ QVector3D shaftEnd(m_mineShaftArray.at(i).second);
++ int shaftLen = (shaftEnd - shaftStart).length() * lowDetailSize;
++ int dataX = shaftStart.x() * textureSize - (shaftSize / 2);
++ int dataY = (shaftStart.y() * textureSize - (shaftSize / 2)) / 2;
++ int dataZ = shaftStart.z() * textureSize - (shaftSize / 2);
++ int dataIndex = dataX + (dataY * textureSize) + dataZ * (textureSize * textureSize / 2);
++ if (shaftStart.x() != shaftEnd.x()) {
++ for (int j = 0; j <= shaftLen; j++) {
++ excavateMineBlock(textureSize, dataIndex, shaftSize, textureData);
++ dataIndex += shaftSize;
++ }
++ } else if (shaftStart.y() != shaftEnd.y()) {
++ shaftLen /= 2; // Vertical shafts are half as long
++ for (int j = 0; j <= shaftLen; j++) {
++ excavateMineBlock(textureSize, dataIndex, shaftSize, textureData);
++ dataIndex += textureSize * shaftSize;
++ }
++ } else {
++ for (int j = 0; j <= shaftLen; j++) {
++ excavateMineBlock(textureSize, dataIndex, shaftSize, textureData);
++ dataIndex += (textureSize * textureSize / 2) * shaftSize;
++ }
++ }
++ }
++ return endIndex;
++ }
++
++ void VolumetricModifier::excavateMineBlock(int textureSize, int dataIndex, int size,
++ QList<uchar> *textureData)
++ {
++ for (int k = 0; k < size; k++) {
++ int curIndex = 0;
++ for (int l = 0; l < size; l++) {
++ curIndex = dataIndex + (k * textureSize * textureSize / 2)
++ + (l * textureSize);
++ for (int m = 0; m < size; m++) {
++ if (textureData->at(curIndex) != airColorIndex)
++ (*textureData)[curIndex] = mineShaftColorIndex;
++ curIndex++;
++ }
++ }
++ }
++ }
++
++ void VolumetricModifier::handleSlicingChanges()
++ {
++ if (m_volumeItem) {
++ if (m_slicingX || m_slicingY || m_slicingZ) {
++ // Only show slices of selected dimensions
++ //! [7]
++ m_volumeItem->setDrawSlices(true);
++ //! [7]
++ m_volumeItem->setSliceIndexX(m_slicingX ? m_sliceIndexX : -1);
++ m_volumeItem->setSliceIndexY(m_slicingY ? m_sliceIndexY : -1);
++ m_volumeItem->setSliceIndexZ(m_slicingZ ? m_sliceIndexZ : -1);
++ } else {
++ // Show slice frames for all dimenstions when not actually slicing
++ m_volumeItem->setDrawSlices(false);
++ m_volumeItem->setSliceIndexX(m_sliceIndexX);
++ m_volumeItem->setSliceIndexY(m_sliceIndexY);
++ m_volumeItem->setSliceIndexZ(m_sliceIndexZ);
++ }
++ }
++ }
++
++ void VolumetricModifier::initMineShaftArray()
++ {
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.7f, 0.1f, 0.7f),
++ QVector3D(0.7f, 0.8f, 0.7f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.7f, 0.7f, 0.5f),
++ QVector3D(0.7f, 0.7f, 0.7f));
++
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.4f, 0.7f, 0.7f),
++ QVector3D(0.7f, 0.7f, 0.7f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.4f, 0.7f, 0.7f),
++ QVector3D(0.4f, 0.7f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.45f, 0.7f, 0.7f),
++ QVector3D(0.45f, 0.7f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.5f, 0.7f, 0.7f),
++ QVector3D(0.5f, 0.7f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.55f, 0.7f, 0.7f),
++ QVector3D(0.55f, 0.7f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.7f),
++ QVector3D(0.6f, 0.7f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.65f, 0.7f, 0.7f),
++ QVector3D(0.65f, 0.7f, 0.8f));
++
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.5f, 0.6f, 0.7f),
++ QVector3D(0.7f, 0.6f, 0.7f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.5f, 0.6f, 0.7f),
++ QVector3D(0.5f, 0.6f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.55f, 0.6f, 0.7f),
++ QVector3D(0.55f, 0.6f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.7f),
++ QVector3D(0.6f, 0.6f, 0.8f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.65f, 0.6f, 0.7f),
++ QVector3D(0.65f, 0.6f, 0.8f));
++
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.7f, 0.6f, 0.4f),
++ QVector3D(0.7f, 0.6f, 0.7f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.45f),
++ QVector3D(0.8f, 0.6f, 0.45f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.5f),
++ QVector3D(0.8f, 0.6f, 0.5f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.55f),
++ QVector3D(0.8f, 0.6f, 0.55f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.6f),
++ QVector3D(0.8f, 0.6f, 0.6f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.65f),
++ QVector3D(0.8f, 0.6f, 0.65f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.6f, 0.7f),
++ QVector3D(0.8f, 0.6f, 0.7f));
++
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.7f, 0.7f, 0.4f),
++ QVector3D(0.7f, 0.7f, 0.7f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.45f),
++ QVector3D(0.8f, 0.7f, 0.45f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.5f),
++ QVector3D(0.8f, 0.7f, 0.5f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.55f),
++ QVector3D(0.8f, 0.7f, 0.55f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.6f),
++ QVector3D(0.8f, 0.7f, 0.6f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.65f),
++ QVector3D(0.8f, 0.7f, 0.65f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.7f, 0.7f),
++ QVector3D(0.8f, 0.7f, 0.7f));
++
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.7f, 0.8f, 0.5f),
++ QVector3D(0.7f, 0.8f, 0.7f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.8f, 0.55f),
++ QVector3D(0.8f, 0.8f, 0.55f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.8f, 0.6f),
++ QVector3D(0.8f, 0.8f, 0.6f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.8f, 0.65f),
++ QVector3D(0.8f, 0.8f, 0.65f));
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.6f, 0.8f, 0.7f),
++ QVector3D(0.8f, 0.8f, 0.7f));
++
++ m_mineShaftArray << QPair<QVector3D, QVector3D>(QVector3D(0.7f, 0.1f, 0.4f),
++ QVector3D(0.7f, 0.7f, 0.4f));
++ }