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
|
/* Copyright (c) 2012, 2013 Stanisław Halik <sthalik@misaki.pl>
* Permission to use, copy, modify, and/or distribute this
* software for any purpose with or without fee is hereby granted,
* provided that the above copyright notice and this permission
* notice appear in all copies.
*/
#include <QMutexLocker>
#include <QCoreApplication>
#include <QPointF>
#include <QList>
#include "functionconfig.h"
#include <QtAlgorithms>
#include <QtAlgorithms>
#include <QSettings>
#include <QPixmap>
#include <cmath>
#include <algorithm>
void Map::setTrackingActive(bool blnActive)
{
activep = blnActive;
}
Map::Map() :
_mutex(QMutex::Recursive),
data(0),
activep(false),
max_x(0),
max_y(0)
{
}
float Map::getValue(float x) {
QMutexLocker foo(&_mutex);
int x2 = x * (double) MEMOIZE_PRECISION;
float ret = getValueInternal(x2);
last_input_value.setX(x);
last_input_value.setY(ret);
return ret;
}
bool Map::getLastPoint(QPointF& point ) {
QMutexLocker foo(&_mutex);
point = last_input_value;
return activep;
}
float Map::getValueInternal(int x) {
float sign = x < 0 ? -1 : 1;
x = fabs(x);
float ret;
int sz = data.size();
if (sz == 0)
ret = 0;
else
ret = data[std::max(std::min(x, sz-1), 0)];
return ret * sign;
}
static __inline QPointF ensureInBounds(QList<QPointF> points, int i) {
int siz = points.size();
if (siz == 0 || i < 0)
return QPointF(0, 0);
if (siz > i)
return points[i];
return points[siz - 1];
}
static bool sortFn(const QPointF& one, const QPointF& two) {
return one.x() < two.x();
}
void Map::reload() {
if (input.size())
qStableSort(input.begin(), input.end(), sortFn);
if (input.size())
{
data = std::vector<float>(MEMOIZE_PRECISION * input[input.size() - 1].x());
const int sz = data.size();
for (int i = 0; i < sz; i++)
data[i] = -1;
for (int k = 0; k < input[0].x() * MEMOIZE_PRECISION; k++) {
if (k < sz)
data[k] = input[0].y() * k / (input[0].x() * MEMOIZE_PRECISION);
}
for (int i = 0; i < sz; i++) {
QPointF p0 = ensureInBounds(input, i - 1);
QPointF p1 = ensureInBounds(input, i);
QPointF p2 = ensureInBounds(input, i + 1);
QPointF p3 = ensureInBounds(input, i + 2);
int end = std::min<int>(sz, p2.x() * MEMOIZE_PRECISION);
int start = p1.x() * MEMOIZE_PRECISION;
for (int j = start; j < end; j++) {
double t = (j - start) / (double) (end - start);
double t2 = t*t;
double t3 = t*t*t;
int x = .5 * ((2. * p1.x()) +
(-p0.x() + p2.x()) * t +
(2. * p0.x() - 5. * p1.x() + 4. * p2.x() - p3.x()) * t2 +
(-p0.x() + 3. * p1.x() - 3. * p2.x() + p3.x()) * t3)
* MEMOIZE_PRECISION;
float y = .5 * ((2. * p1.y()) +
(-p0.y() + p2.y()) * t +
(2. * p0.y() - 5. * p1.y() + 4. * p2.y() - p3.y()) * t2 +
(-p0.y() + 3. * p1.y() - 3. * p2.y() + p3.y()) * t3);
if (x >= 0 && x < sz)
data[x] = y;
}
}
float last = 0;
for (int i = 0; i < sz; i++)
{
if (data[i] <= 0)
data[i] = last;
last = data[i];
}
}
}
void Map::removePoint(int i) {
QMutexLocker foo(&_mutex);
if (i >= 0 && i < input.size())
{
input.removeAt(i);
reload();
}
}
void Map::addPoint(QPointF pt) {
QMutexLocker foo(&_mutex);
input.append(pt);
reload();
}
void Map::movePoint(int idx, QPointF pt) {
QMutexLocker foo(&_mutex);
if (idx >= 0 && idx < input.size())
{
input[idx] = pt;
reload();
}
}
const QList<QPointF> Map::getPoints() {
QMutexLocker foo(&_mutex);
// NB can't pass by reference
return input;
}
void Map::loadSettings(QSettings& settings, const QString& title) {
QMutexLocker foo(&_mutex);
QPointF newPoint;
QList<QPointF> points;
settings.beginGroup(QString("Curves-%1").arg(title));
int max = settings.value("point-count", 0).toInt();
for (int i = 0; i < max; i++) {
newPoint = QPointF(settings.value(QString("point-%1-x").arg(i), 0).toFloat(),
settings.value(QString("point-%1-y").arg(i), 0).toFloat());
if (newPoint.x() > max_x) {
newPoint.setX(max_x);
}
if (newPoint.y() > max_y) {
newPoint.setY(max_y);
}
points.append(newPoint);
}
settings.endGroup();
input = points;
reload();
}
void Map::saveSettings(QSettings& settings, const QString& title) {
QMutexLocker foo(&_mutex);
settings.beginGroup(QString("Curves-%1").arg(title));
int max = input.size();
settings.setValue("point-count", max);
for (int i = 0; i < max; i++) {
settings.setValue(QString("point-%1-x").arg(i), input[i].x());
settings.setValue(QString("point-%1-y").arg(i), input[i].y());
}
for (int i = max; true; i++)
{
QString x = QString("point-%1-x").arg(i);
if (!settings.contains(x))
break;
settings.remove(x);
settings.remove(QString("point-%1-y").arg(i));
}
settings.endGroup();
}
|
