|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the demonstration applications of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
15 ** |
|
16 ** GNU Lesser General Public License Usage |
|
17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 ** General Public License version 2.1 as published by the Free Software |
|
19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 ** packaging of this file. Please review the following information to |
|
21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 ** |
|
24 ** In addition, as a special exception, Nokia gives you certain additional |
|
25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 ** |
|
28 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 #include "guideline.h" |
|
43 #include <cmath> |
|
44 |
|
45 GuideLine::GuideLine(const QLineF &line, Guide *follows) : Guide(follows) |
|
46 { |
|
47 this->line = line; |
|
48 } |
|
49 |
|
50 GuideLine::GuideLine(const QPointF &end, Guide *follows) : Guide(follows) |
|
51 { |
|
52 if (follows) |
|
53 this->line = QLineF(prevGuide->endPos(), end); |
|
54 else |
|
55 this->line = QLineF(QPointF(0, 0), end); |
|
56 } |
|
57 |
|
58 float GuideLine::length() |
|
59 { |
|
60 return line.length(); |
|
61 } |
|
62 |
|
63 QPointF GuideLine::startPos() |
|
64 { |
|
65 return QPointF(this->line.p1().x() * scaleX, this->line.p1().y() * scaleY); |
|
66 } |
|
67 |
|
68 QPointF GuideLine::endPos() |
|
69 { |
|
70 return QPointF(this->line.p2().x() * scaleX, this->line.p2().y() * scaleY); |
|
71 } |
|
72 |
|
73 void GuideLine::guide(DemoItem *item, float moveSpeed) |
|
74 { |
|
75 float frame = item->guideFrame - this->startLength; |
|
76 float endX = (this->line.p1().x() + (frame * this->line.dx() / this->length())) * scaleX; |
|
77 float endY = (this->line.p1().y() + (frame * this->line.dy() / this->length())) * scaleY; |
|
78 QPointF pos(endX, endY); |
|
79 this->move(item, pos, moveSpeed); |
|
80 } |
|
81 |