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39
40#ifndef QT3DRENDER_CAMERALENS_P_H
41#define QT3DRENDER_CAMERALENS_P_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/qt3drender_global_p.h>
55#include <Qt3DCore/private/qcomponent_p.h>
56
57#include "qcameralens.h"
58
59#include <QtGui/qmatrix4x4.h>
60
61QT_BEGIN_NAMESPACE
62
63namespace Qt3DRender {
64
65struct CameraLensRequest
66{
67 Qt3DCore::QNodeId requestId;
68 Qt3DCore::QNodeId cameraId;
69 Qt3DCore::QNodeId entityId;
70
71 inline operator bool() const { return !requestId.isNull(); }
72};
73
74inline bool operator ==(const CameraLensRequest &a, const CameraLensRequest &b) noexcept
75{
76 return a.cameraId == b.cameraId && a.entityId == b.entityId && a.requestId == b.requestId;
77}
78
79inline bool operator !=(const CameraLensRequest &a, const CameraLensRequest &b) noexcept
80{
81 return !(a == b);
82}
83
84class Q_3DRENDERSHARED_PRIVATE_EXPORT QCameraLensPrivate : public Qt3DCore::QComponentPrivate
85{
86public:
87 QCameraLensPrivate();
88
89 inline void updateProjectionMatrix()
90 {
91 switch (m_projectionType) {
92 case QCameraLens::OrthographicProjection:
93 updateOrthographicProjection();
94 break;
95 case QCameraLens::PerspectiveProjection:
96 updatePerpectiveProjection();
97 break;
98 case QCameraLens::FrustumProjection:
99 updateFrustumProjection();
100 break;
101 case QCameraLens::CustomProjection:
102 break;
103 }
104 }
105
106 Q_DECLARE_PUBLIC(QCameraLens)
107
108 QCameraLens::ProjectionType m_projectionType;
109
110 float m_nearPlane;
111 float m_farPlane;
112
113 float m_fieldOfView;
114 float m_aspectRatio;
115
116 float m_left;
117 float m_right;
118 float m_bottom;
119 float m_top;
120
121 mutable QMatrix4x4 m_projectionMatrix;
122
123 float m_exposure;
124
125 CameraLensRequest m_pendingViewAllRequest;
126 void processViewAllResult(Qt3DCore::QNodeId requestId, const QVector3D &center, float radius);
127
128private:
129 inline void updatePerpectiveProjection()
130 {
131 Q_Q(QCameraLens);
132 m_projectionMatrix.setToIdentity();
133 m_projectionMatrix.perspective(verticalAngle: m_fieldOfView, aspectRatio: m_aspectRatio, nearPlane: m_nearPlane, farPlane: m_farPlane);
134 Q_EMIT q->projectionMatrixChanged(projectionMatrix: m_projectionMatrix);
135 }
136
137 inline void updateOrthographicProjection()
138 {
139 Q_Q(QCameraLens);
140 m_projectionMatrix.setToIdentity();
141 m_projectionMatrix.ortho(left: m_left, right: m_right, bottom: m_bottom, top: m_top, nearPlane: m_nearPlane, farPlane: m_farPlane);
142 Q_EMIT q->projectionMatrixChanged(projectionMatrix: m_projectionMatrix);
143 }
144
145 inline void updateFrustumProjection()
146 {
147 Q_Q(QCameraLens);
148 m_projectionMatrix.setToIdentity();
149 m_projectionMatrix.frustum(left: m_left, right: m_right, bottom: m_bottom, top: m_top, nearPlane: m_nearPlane, farPlane: m_farPlane);
150 Q_EMIT q->projectionMatrixChanged(projectionMatrix: m_projectionMatrix);
151 }
152};
153
154struct QCameraLensData
155{
156 QMatrix4x4 projectionMatrix;
157 float exposure;
158};
159
160} // namespace Qt3DRender
161
162QT_END_NAMESPACE
163
164#endif // QT3DRENDER_CAMERALENS_P_H
165

source code of qt3d/src/render/frontend/qcameralens_p.h