1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/******************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Data Visualization module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#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]
|
