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51
52#include <QGuiApplication>
53#include <QThread>
54#include <QTimer>
55
56#include <Qt3DInput/QInputAspect>
57
58#include <Qt3DRender/qcamera.h>
59#include <Qt3DRender/qcameralens.h>
60#include <Qt3DExtras/qcylindermesh.h>
61#include <Qt3DRender/qmesh.h>
62#include <Qt3DRender/qtechnique.h>
63#include <Qt3DExtras/qphongmaterial.h>
64#include <Qt3DRender/qeffect.h>
65#include <Qt3DRender/qtexture.h>
66#include <Qt3DRender/qrenderpass.h>
67#include <Qt3DRender/qrenderaspect.h>
68#include <Qt3DExtras/qforwardrenderer.h>
69
70#include <Qt3DCore/qentity.h>
71#include <Qt3DCore/qtransform.h>
72#include <Qt3DCore/qaspectengine.h>
73
74#include <Qt3DExtras/qt3dwindow.h>
75#include <Qt3DExtras/qorbitcameracontroller.h>
76
77#include <Qt3DRender/QLayer>
78#include <Qt3DRender/QLayerFilter>
79
80using namespace Qt3DRender;
81
82int main(int argc, char **argv)
83{
84 QGuiApplication app(argc, argv);
85 Qt3DExtras::Qt3DWindow view;
86
87 // Root entity
88 Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
89
90 // Camera
91 Qt3DRender::QCamera *camera = view.camera();
92 camera->lens()->setPerspectiveProjection(fieldOfView: 45.0f, aspect: 16.0f/9.0f, nearPlane: 0.1f, farPlane: 1000.0f);
93 camera->setPosition(QVector3D(0, 0, 20.0f));
94 camera->setUpVector(QVector3D(0, 1, 0));
95 camera->setViewCenter(QVector3D(0, 0, 0));
96
97 // For camera controls
98 Qt3DExtras::QOrbitCameraController *cameraController = new Qt3DExtras::QOrbitCameraController(rootEntity);
99 cameraController->setCamera(camera);
100
101 // Cylinder shape data
102 Qt3DExtras::QCylinderMesh *mesh = new Qt3DExtras::QCylinderMesh();
103 mesh->setRadius(1);
104 mesh->setLength(3);
105 mesh->setRings(100);
106 mesh->setSlices(20);
107
108 // Transform for cylinder
109 Qt3DCore::QTransform *transform = new Qt3DCore::QTransform;
110 transform->setScale(1.5f);
111 transform->setRotation(QQuaternion::fromAxisAndAngle(axis: QVector3D(1, 0, 0), angle: 45.0f));
112
113 // Material
114 Qt3DExtras::QPhongMaterial *material = new Qt3DExtras::QPhongMaterial(rootEntity);
115 material->setDiffuse(Qt::red);
116
117 // Cylinder
118 Qt3DCore::QEntity *cylinder = new Qt3DCore::QEntity(rootEntity);
119 cylinder->addComponent(comp: mesh);
120 cylinder->addComponent(comp: transform);
121 cylinder->addComponent(comp: material);
122
123 QTimer *timer = new QTimer(rootEntity);
124 QObject::connect(sender: timer, signal: &QTimer::timeout, slot: [=](){
125 for (int i = 0; i < 2; i++) {
126 auto *dummy = new Qt3DCore::QNode(rootEntity);
127 auto *dummy2 = new Qt3DCore::QNode(dummy);
128 auto *layerFilter = new QLayerFilter(dummy2);
129 auto *layer = new QLayer();
130
131 layerFilter->addLayer(layer);
132
133 cylinder->addComponent(comp: layer);
134 }
135 });
136 timer->start(msec: 1000);
137
138 QTimer *timer2 = new QTimer(rootEntity);
139 QObject::connect(sender: timer2, signal: &QTimer::timeout, slot: [](){
140 QThread::msleep(100);
141 });
142 timer2->start(msec: 100);
143
144 // Set root object of the scene
145 view.setRootEntity(rootEntity);
146 view.show();
147
148 return app.exec();
149}
150

source code of qt3d/tests/manual/qtbug-72236/main.cpp