1/****************************************************************************
2**
3** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt3D module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QT3DRENDER_RENDER_CAMERALENS_H
41#define QT3DRENDER_RENDER_CAMERALENS_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <Qt3DRender/private/backendnode_p.h>
55#include <Qt3DCore/private/matrix4x4_p.h>
56#include <Qt3DRender/private/qcameralens_p.h>
57#include <QRectF>
58
59QT_BEGIN_NAMESPACE
60
61namespace Qt3DRender {
62
63namespace Render {
64
65class EntityManager;
66class CameraManager;
67class Sphere;
68
69class CameraLensFunctor : public Qt3DCore::QBackendNodeMapper
70{
71public:
72 explicit CameraLensFunctor(AbstractRenderer *renderer, QRenderAspect *renderAspect);
73 Qt3DCore::QBackendNode *create(const Qt3DCore::QNodeCreatedChangeBasePtr &change) const override;
74 Qt3DCore::QBackendNode *get(Qt3DCore::QNodeId id) const override;
75 void destroy(Qt3DCore::QNodeId id) const override;
76
77private:
78 CameraManager *m_manager;
79 AbstractRenderer *m_renderer;
80 QRenderAspect *m_renderAspect;
81};
82
83class Q_3DRENDERSHARED_PRIVATE_EXPORT CameraLens : public BackendNode
84{
85public:
86 CameraLens();
87 ~CameraLens();
88 void cleanup();
89
90 void setRenderAspect(QRenderAspect* renderAspect);
91
92 Matrix4x4 viewMatrix(const Matrix4x4 &worldTransform);
93
94 void setProjection(const Matrix4x4 &projection);
95 inline Matrix4x4 projection() const { return m_projection; }
96
97 void setExposure(float exposure);
98 inline float exposure() const { return m_exposure; }
99 void syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime) override;
100
101 void processViewAllResult(Qt3DCore::QAspectManager *aspectManager, const Sphere &sphere, Qt3DCore::QNodeId commandId);
102
103 static bool viewMatrixForCamera(EntityManager *manager, Qt3DCore::QNodeId cameraId,
104 Matrix4x4 &viewMatrix, Matrix4x4 &projectionMatrix);
105
106private:
107 void computeSceneBoundingVolume(Qt3DCore::QNodeId entityId,
108 Qt3DCore::QNodeId cameraId,
109 Qt3DCore::QNodeId requestId);
110
111 QRenderAspect *m_renderAspect;
112 CameraLensRequest m_pendingViewAllRequest;
113 Matrix4x4 m_projection;
114 float m_exposure;
115};
116
117} // namespace Render
118} // namespace Qt3DRender
119
120QT_END_NAMESPACE
121
122#endif // QT3DRENDER_RENDER_CAMERALENS_H
123

source code of qt3d/src/render/backend/cameralens_p.h