| /**************************************************************************** |
| ** |
| ** 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 |
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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 |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "highlightseries.h" |
| |
| using namespace QtDataVisualization; |
| |
| //! [2] |
| const float darkRedPos = 1.0f; |
| const float redPos = 0.8f; |
| const float yellowPos = 0.6f; |
| const float greenPos = 0.4f; |
| const float darkGreenPos = 0.2f; |
| //! [2] |
| |
| HighlightSeries::HighlightSeries() |
| : m_width(100), |
| m_height(100) |
| { |
| setDrawMode(QSurface3DSeries::DrawSurface); |
| setFlatShadingEnabled(true); |
| setVisible(false); |
| } |
| |
| HighlightSeries::~HighlightSeries() |
| { |
| } |
| |
| //! [0] |
| void HighlightSeries::setTopographicSeries(TopographicSeries *series) |
| { |
| m_topographicSeries = series; |
| m_srcWidth = m_topographicSeries->dataProxy()->array()->at(0)->size(); |
| m_srcHeight = m_topographicSeries->dataProxy()->array()->size(); |
| |
| QObject::connect(m_topographicSeries, &QSurface3DSeries::selectedPointChanged, |
| this, &HighlightSeries::handlePositionChange); |
| } |
| //! [0] |
| |
| //! [1] |
| void HighlightSeries::handlePositionChange(const QPoint &position) |
| { |
| m_position = position; |
| |
| if (position == invalidSelectionPosition()) { |
| setVisible(false); |
| |
| return; |
| } |
| |
| int halfWidth = m_width / 2; |
| int halfHeight = m_height / 2; |
| |
| int startX = position.y() - halfWidth; |
| if (startX < 0 ) |
| startX = 0; |
| int endX = position.y() + halfWidth; |
| if (endX > (m_srcWidth - 1)) |
| endX = m_srcWidth - 1; |
| int startZ = position.x() - halfHeight; |
| if (startZ < 0 ) |
| startZ = 0; |
| int endZ = position.x() + halfHeight; |
| if (endZ > (m_srcHeight - 1)) |
| endZ = m_srcHeight - 1; |
| |
| QSurfaceDataProxy *srcProxy = m_topographicSeries->dataProxy(); |
| const QSurfaceDataArray &srcArray = *srcProxy->array(); |
| |
| QSurfaceDataArray *dataArray = new QSurfaceDataArray; |
| dataArray->reserve(endZ - startZ); |
| for (int i = startZ; i < endZ; i++) { |
| QSurfaceDataRow *newRow = new QSurfaceDataRow(endX - startX); |
| QSurfaceDataRow *srcRow = srcArray.at(i); |
| for (int j = startX, p = 0; j < endX; j++, p++) { |
| QVector3D pos = srcRow->at(j).position(); |
| (*newRow)[p].setPosition(QVector3D(pos.x(), pos.y() + 0.1f, pos.z())); |
| } |
| *dataArray << newRow; |
| } |
| |
| dataProxy()->resetArray(dataArray); |
| setVisible(true); |
| } |
| //! [1] |
| |
| //! [3] |
| void HighlightSeries::handleGradientChange(float value) |
| { |
| float ratio = m_minHeight / value; |
| |
| QLinearGradient gr; |
| gr.setColorAt(0.0f, Qt::black); |
| gr.setColorAt(darkGreenPos * ratio, Qt::darkGreen); |
| gr.setColorAt(greenPos * ratio, Qt::green); |
| gr.setColorAt(yellowPos * ratio, Qt::yellow); |
| gr.setColorAt(redPos * ratio, Qt::red); |
| gr.setColorAt(darkRedPos * ratio, Qt::darkRed); |
| |
| setBaseGradient(gr); |
| setColorStyle(Q3DTheme::ColorStyleRangeGradient); |
| } |
| //! [3] |