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51
52#include "orbittransformcontroller.h"
53
54#include <Qt3DCore/qtransform.h>
55
56QT_BEGIN_NAMESPACE
57
58OrbitTransformController::OrbitTransformController(QObject *parent)
59 : QObject(parent)
60 , m_target(nullptr)
61 , m_matrix()
62 , m_radius(1.0f)
63 , m_angle(0.0f)
64{
65}
66
67void OrbitTransformController::setTarget(Qt3DCore::QTransform *target)
68{
69 if (m_target != target) {
70 m_target = target;
71 emit targetChanged();
72 }
73}
74
75Qt3DCore::QTransform *OrbitTransformController::target() const
76{
77 return m_target;
78}
79
80void OrbitTransformController::setRadius(float radius)
81{
82 if (!qFuzzyCompare(p1: radius, p2: m_radius)) {
83 m_radius = radius;
84 updateMatrix();
85 emit radiusChanged();
86 }
87}
88
89float OrbitTransformController::radius() const
90{
91 return m_radius;
92}
93
94void OrbitTransformController::setAngle(float angle)
95{
96 if (!qFuzzyCompare(p1: angle, p2: m_angle)) {
97 m_angle = angle;
98 updateMatrix();
99 emit angleChanged();
100 }
101}
102
103float OrbitTransformController::angle() const
104{
105 return m_angle;
106}
107
108void OrbitTransformController::updateMatrix()
109{
110 m_matrix.setToIdentity();
111 m_matrix.rotate(angle: m_angle, vector: QVector3D(0.0f, 1.0f, 0.0f));
112 m_matrix.translate(x: m_radius, y: 0.0f, z: 0.0f);
113 m_target->setMatrix(m_matrix);
114}
115
116QT_END_NAMESPACE
117

source code of qt3d/tests/manual/rendercapture-cpp/orbittransformcontroller.cpp