1 | // Copyright (C) 2021 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
3 | |
4 | #ifndef QQUICK3DPARTICLEDATA_H |
5 | #define QQUICK3DPARTICLEDATA_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <QVector3D> |
19 | #include <private/qglobal_p.h> |
20 | |
21 | QT_BEGIN_NAMESPACE |
22 | |
23 | struct Color4ub { |
24 | uchar r = 255; |
25 | uchar g = 255; |
26 | uchar b = 255; |
27 | uchar a = 255; |
28 | }; |
29 | |
30 | struct Vector3b { |
31 | qint8 x = 0; |
32 | qint8 y = 0; |
33 | qint8 z = 0; |
34 | }; |
35 | |
36 | // Current particle data, only used for currently modified data, so one per system |
37 | struct QQuick3DParticleDataCurrent |
38 | { |
39 | QVector3D position; |
40 | QVector3D velocity; |
41 | QVector3D rotation; |
42 | QVector3D scale; |
43 | Color4ub color; |
44 | }; |
45 | |
46 | // Particle data per particle |
47 | // Not modified after emits |
48 | struct QQuick3DParticleData |
49 | { |
50 | QVector3D startPosition; |
51 | QVector3D startVelocity; |
52 | // Use Vector3b to reduce the memory usage, rotations work with less accuracy. |
53 | // These need to be qint8 and not quint8 as rotations can go either direction. |
54 | Vector3b startRotation; |
55 | Vector3b startRotationVelocity; |
56 | Color4ub startColor; |
57 | // Seconds, system time when this particle was emitted |
58 | float startTime = -1.0f; |
59 | // Seconds, particle lifetime |
60 | float lifetime = 0.0f; |
61 | // Unified scaling among axes |
62 | float startSize = 1.0f; |
63 | float endSize = 1.0f; |
64 | // Seconds, sprite sequence animation total time |
65 | float animationTime = -1.0f; |
66 | // Index/id of the particle. Used to get unique random values. |
67 | // Might not be necessary, check later |
68 | int index = 0; |
69 | // Size: 12+12+3+3+4+4+4+4+4+4 = 54 bytes |
70 | }; |
71 | |
72 | // Data structure for storing bursts |
73 | struct QQuick3DParticleEmitBurstData { |
74 | int amount = 0; |
75 | int time = 0; |
76 | int duration = 0; |
77 | QVector3D position; |
78 | }; |
79 | |
80 | QT_END_NAMESPACE |
81 | |
82 | #endif // QQUICK3DPARTICLEDATA_H |
83 | |