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
|
//
// C++ Implementation: SailGraphicsItem
//
// Description:
//
//
// Author: Thibaut GRIDEL <tgridel@free.fr>
//
// Copyright (c) 2008-2011 Thibaut GRIDEL
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
//
#include <iostream>
#include <QPainter>
#include <QGraphicsScene>
#include "sail.h"
#include "commontypes.h"
#include "situationmodel.h"
#include "trackmodel.h"
#include "boatmodel.h"
extern int debugLevel;
SailGraphicsItem::SailGraphicsItem(BoatModel *boat, QGraphicsItem *parent)
: QGraphicsPathItem(parent),
m_boat(boat),
m_sailAngle(0) {
setZValue(0);
setBrush(QBrush(Qt::white));
}
SailGraphicsItem::~SailGraphicsItem() {}
void SailGraphicsItem::setPosition(QPointF position) {
if (pos() != position) {
setPos(position);
update();
}
}
void SailGraphicsItem::setSailSize(qreal sailSize) {
m_sailSize = sailSize;
QPainterPath sailPathStalled;
sailPathStalled.cubicTo(.1 * sailSize, .2 * sailSize, .1 * sailSize, .2 * sailSize, 0, .3 * sailSize);
sailPathStalled.cubicTo(-.1 * sailSize, .4 * sailSize, -.1 * sailSize, .4 * sailSize, 0, .5 * sailSize);
sailPathStalled.cubicTo(.1 * sailSize, .6 * sailSize, .1 * sailSize, .6 * sailSize, 0, .7 * sailSize);
sailPathStalled.cubicTo(-.1 * sailSize, .8 * sailSize, -.1 * sailSize, .8 * sailSize, 0, sailSize);
sailPathStalled.lineTo(0, 0);
m_sailPathStalled = sailPathStalled;
QPainterPath sailPathStarboard;
sailPathStarboard.cubicTo(.1 * sailSize, .4 * sailSize, .1 * sailSize, .6 * sailSize, 0, sailSize);
sailPathStarboard.lineTo(0, 0);
m_sailPathStarboard = sailPathStarboard;
QPainterPath sailPathPort;
sailPathPort.cubicTo(-.1 * sailSize, .4 * sailSize, -.1 * sailSize, .6 * sailSize, 0, sailSize);
sailPathPort.lineTo(0, 0);
m_sailPathPort = sailPathPort;
setSailAngle(m_boat->trimmedSailAngle());
}
/// calculate a sail incidence angle, corrected with user trimming
void SailGraphicsItem::setSailAngle(qreal value) {
m_sailAngle = value;
qreal angle = fmod(m_boat->heading() - m_boat->wind() - m_sailAngle +360, 360);
if ((angle < 10 || angle > 350 || (angle > 170 && angle < 190)) && path() != m_sailPathStalled) {
setPath(m_sailPathStalled);
} else if (angle >= 10 && angle <= 170 && path() != m_sailPathStarboard) {
setPath(m_sailPathStarboard);
} else if (angle >= 190 && angle <= 350 && path() != m_sailPathPort) {
setPath(m_sailPathPort);
}
QTransform transform;
transform.rotate(- m_sailAngle);
setTransform(transform, false);
}
|
