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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/****************************************************************************
**
** 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 "scatterdatamodifier.h"
#include <QtDataVisualization/qscatterdataproxy.h>
#include <QtDataVisualization/qvalue3daxis.h>
#include <QtDataVisualization/q3dscene.h>
#include <QtDataVisualization/q3dcamera.h>
#include <QtDataVisualization/qscatter3dseries.h>
#include <QtDataVisualization/q3dtheme.h>
#include <qmath.h>
#include <QComboBox>
using namespace QtDataVisualization;
const int numberOfCols = 8;
const int numberOfRows = 8;
const float limit = 8.0f;
const float PI = 3.14159f;
#define HEDGEHOG
ScatterDataModifier::ScatterDataModifier(Q3DScatter *scatter)
: m_graph(scatter),
m_fontSize(40.0f),
m_style(QAbstract3DSeries::MeshUserDefined),
m_smooth(true)
{
m_graph->activeTheme()->setType(Q3DTheme::ThemeEbony);
QFont font = m_graph->activeTheme()->font();
font.setPointSize(m_fontSize);
m_graph->activeTheme()->setFont(font);
m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualitySoftLow);
m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront);
m_graph->setAxisX(new QValue3DAxis);
m_graph->setAxisY(new QValue3DAxis);
m_graph->setAxisZ(new QValue3DAxis);
QScatterDataProxy *proxy = new QScatterDataProxy;
QScatter3DSeries *series = new QScatter3DSeries(proxy);
series->setItemLabelFormat("@xTitle: @xLabel @yTitle: @yLabel @zTitle: @zLabel");
m_graph->addSeries(series);
QObject::connect(&m_rotationTimer, &QTimer::timeout, this,
&ScatterDataModifier::triggerRotation);
addData();
}
ScatterDataModifier::~ScatterDataModifier()
{
delete m_graph;
}
void ScatterDataModifier::addData()
{
// Configure the axes according to the data
m_graph->axisX()->setTitle("X");
m_graph->axisY()->setTitle("Y");
m_graph->axisZ()->setTitle("Z");
m_graph->axisX()->setRange(-limit, limit);
m_graph->axisY()->setRange(-1.0f, 1.0f);
m_graph->axisZ()->setRange(-limit, limit);
QScatterDataArray *dataArray = new QScatterDataArray;
dataArray->resize(numberOfCols * numberOfRows);
QScatterDataItem *ptrToDataArray = &dataArray->first();
float angleStep = 360.0f / float(numberOfCols);
float latAngleStep = 100.0f / float(numberOfRows);
for (float i = 0; i < numberOfRows; i++) {
float latAngle = float(i) * latAngleStep + 40.0f;
float radius = qSin(latAngle * PI / 180.0f) * limit;
float y = qCos(latAngle * PI / 180.0f) * 1.0f;
#ifdef HEDGEHOG
float angleZ = (qAtan((y * limit / 2.0f) / radius) * 180.0f / PI);
QQuaternion rotationZ = QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 0.0f, 1.0f), angleZ - 90.0f);
#endif
for (float j = 0; j < numberOfCols; j++) {
float angle = float(j) * angleStep;
float x = qCos(angle * PI / 180.0f) * radius;
float z = qSin(angle * PI / 180.0f) * radius;
float angleY = (qAtan(z / x) * 180.0f / PI);
if (x < 0)
angleY = 180.0f + angleY;
if (x > 0 && z < 0)
angleY = 360.0f + angleY;
#ifdef HEDGEHOG
QQuaternion rotationY = QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), angleY);
QQuaternion rotation = rotationY * rotationZ;
#else
QQuaternion rotation = QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), angleY) *
QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), -90.0f);
#endif
ptrToDataArray->setPosition(QVector3D(x, y, z));
ptrToDataArray->setRotation(rotation);
ptrToDataArray++;
}
}
m_graph->seriesList().at(0)->dataProxy()->resetArray(dataArray);
}
void ScatterDataModifier::enableOptimization(int enabled)
{
if (enabled)
m_graph->setOptimizationHints(QAbstract3DGraph::OptimizationStatic);
else
m_graph->setOptimizationHints(QAbstract3DGraph::OptimizationDefault);
}
void ScatterDataModifier::changeStyle(int style)
{
QComboBox *comboBox = qobject_cast<QComboBox *>(sender());
if (comboBox) {
m_style = QAbstract3DSeries::Mesh(comboBox->itemData(style).toInt());
if (m_graph->seriesList().size())
m_graph->seriesList().at(0)->setMesh(m_style);
}
}
void ScatterDataModifier::changeTheme(int theme)
{
Q3DTheme *currentTheme = m_graph->activeTheme();
currentTheme->setType(Q3DTheme::Theme(theme));
emit backgroundEnabledChanged(currentTheme->isBackgroundEnabled());
emit gridEnabledChanged(currentTheme->isGridEnabled());
emit fontChanged(currentTheme->font());
}
void ScatterDataModifier::changePresetCamera()
{
static int preset = Q3DCamera::CameraPresetFrontLow;
m_graph->scene()->activeCamera()->setCameraPreset((Q3DCamera::CameraPreset)preset);
if (++preset > Q3DCamera::CameraPresetDirectlyBelow)
preset = Q3DCamera::CameraPresetFrontLow;
}
void ScatterDataModifier::changeLabelStyle()
{
m_graph->activeTheme()->setLabelBackgroundEnabled(!m_graph->activeTheme()->isLabelBackgroundEnabled());
}
void ScatterDataModifier::changeFont(const QFont &font)
{
QFont newFont = font;
newFont.setPointSizeF(m_fontSize);
m_graph->activeTheme()->setFont(newFont);
}
void ScatterDataModifier::shadowQualityUpdatedByVisual(QAbstract3DGraph::ShadowQuality sq)
{
int quality = int(sq);
emit shadowQualityChanged(quality); // connected to a checkbox in main.cpp
}
void ScatterDataModifier::triggerRotation()
{
if (m_graph->seriesList().size()) {
int selectedIndex = m_graph->seriesList().at(0)->selectedItem();
if (selectedIndex != QScatter3DSeries::invalidSelectionIndex()) {
static float itemAngle = 0.0f;
QScatterDataItem item(*(m_graph->seriesList().at(0)->dataProxy()->itemAt(selectedIndex)));
QQuaternion itemRotation = QQuaternion::fromAxisAndAngle(0.0f, 0.0f, 1.0f, itemAngle++);
item.setRotation(itemRotation);
m_graph->seriesList().at(0)->dataProxy()->setItem(selectedIndex, item);
} else {
static float seriesAngle = 0.0f;
QQuaternion rotation = QQuaternion::fromAxisAndAngle(1.0f, 1.0f, 1.0f, seriesAngle++);
m_graph->seriesList().at(0)->setMeshRotation(rotation);
}
}
}
void ScatterDataModifier::changeShadowQuality(int quality)
{
QAbstract3DGraph::ShadowQuality sq = QAbstract3DGraph::ShadowQuality(quality);
m_graph->setShadowQuality(sq);
}
void ScatterDataModifier::setBackgroundEnabled(int enabled)
{
m_graph->activeTheme()->setBackgroundEnabled((bool)enabled);
}
void ScatterDataModifier::setGridEnabled(int enabled)
{
m_graph->activeTheme()->setGridEnabled((bool)enabled);
}
void ScatterDataModifier::toggleRotation()
{
if (m_rotationTimer.isActive())
m_rotationTimer.stop();
else
m_rotationTimer.start(20);
}
|
