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29 | |
30 | #include "highlightseries.h" |
31 | |
32 | using namespace QtDataVisualization; |
33 | |
34 | //! [2] |
35 | const float darkRedPos = 1.0f; |
36 | const float redPos = 0.8f; |
37 | const float yellowPos = 0.6f; |
38 | const float greenPos = 0.4f; |
39 | const float darkGreenPos = 0.2f; |
40 | //! [2] |
41 | |
42 | HighlightSeries::HighlightSeries() |
43 | : m_width(100), |
44 | m_height(100) |
45 | { |
46 | setDrawMode(QSurface3DSeries::DrawSurface); |
47 | setFlatShadingEnabled(true); |
48 | setVisible(false); |
49 | } |
50 | |
51 | HighlightSeries::~HighlightSeries() |
52 | { |
53 | } |
54 | |
55 | //! [0] |
56 | void HighlightSeries::setTopographicSeries(TopographicSeries *series) |
57 | { |
58 | m_topographicSeries = series; |
59 | m_srcWidth = m_topographicSeries->dataProxy()->array()->at(i: 0)->size(); |
60 | m_srcHeight = m_topographicSeries->dataProxy()->array()->size(); |
61 | |
62 | QObject::connect(sender: m_topographicSeries, signal: &QSurface3DSeries::selectedPointChanged, |
63 | receiver: this, slot: &HighlightSeries::handlePositionChange); |
64 | } |
65 | //! [0] |
66 | |
67 | //! [1] |
68 | void HighlightSeries::handlePositionChange(const QPoint &position) |
69 | { |
70 | m_position = position; |
71 | |
72 | if (position == invalidSelectionPosition()) { |
73 | setVisible(false); |
74 | |
75 | return; |
76 | } |
77 | |
78 | int halfWidth = m_width / 2; |
79 | int halfHeight = m_height / 2; |
80 | |
81 | int startX = position.y() - halfWidth; |
82 | if (startX < 0 ) |
83 | startX = 0; |
84 | int endX = position.y() + halfWidth; |
85 | if (endX > (m_srcWidth - 1)) |
86 | endX = m_srcWidth - 1; |
87 | int startZ = position.x() - halfHeight; |
88 | if (startZ < 0 ) |
89 | startZ = 0; |
90 | int endZ = position.x() + halfHeight; |
91 | if (endZ > (m_srcHeight - 1)) |
92 | endZ = m_srcHeight - 1; |
93 | |
94 | QSurfaceDataProxy *srcProxy = m_topographicSeries->dataProxy(); |
95 | const QSurfaceDataArray &srcArray = *srcProxy->array(); |
96 | |
97 | QSurfaceDataArray *dataArray = new QSurfaceDataArray; |
98 | dataArray->reserve(alloc: endZ - startZ); |
99 | for (int i = startZ; i < endZ; i++) { |
100 | QSurfaceDataRow *newRow = new QSurfaceDataRow(endX - startX); |
101 | QSurfaceDataRow *srcRow = srcArray.at(i); |
102 | for (int j = startX, p = 0; j < endX; j++, p++) { |
103 | QVector3D pos = srcRow->at(i: j).position(); |
104 | (*newRow)[p].setPosition(QVector3D(pos.x(), pos.y() + 0.1f, pos.z())); |
105 | } |
106 | *dataArray << newRow; |
107 | } |
108 | |
109 | dataProxy()->resetArray(newArray: dataArray); |
110 | setVisible(true); |
111 | } |
112 | //! [1] |
113 | |
114 | //! [3] |
115 | void HighlightSeries::handleGradientChange(float value) |
116 | { |
117 | float ratio = m_minHeight / value; |
118 | |
119 | QLinearGradient gr; |
120 | gr.setColorAt(pos: 0.0f, color: Qt::black); |
121 | gr.setColorAt(pos: darkGreenPos * ratio, color: Qt::darkGreen); |
122 | gr.setColorAt(pos: greenPos * ratio, color: Qt::green); |
123 | gr.setColorAt(pos: yellowPos * ratio, color: Qt::yellow); |
124 | gr.setColorAt(pos: redPos * ratio, color: Qt::red); |
125 | gr.setColorAt(pos: darkRedPos * ratio, color: Qt::darkRed); |
126 | |
127 | setBaseGradient(gr); |
128 | setColorStyle(Q3DTheme::ColorStyleRangeGradient); |
129 | } |
130 | //! [3] |
131 | |