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50 | |
51 | #include "scene.h" |
52 | |
53 | #include <QtCore/QDebug> |
54 | #include <QtCore/QTimer> |
55 | #include <QtCore/QDateTime> |
56 | |
57 | #include <QtGui/QPainter> |
58 | #include <Qt3DRender/QPaintedTextureImage> |
59 | #include <Qt3DRender/QTexture> |
60 | |
61 | #include <Qt3DExtras/QCuboidMesh> |
62 | #include <Qt3DExtras/QDiffuseMapMaterial> |
63 | |
64 | class MyTextureImage : public Qt3DRender::QPaintedTextureImage |
65 | { |
66 | public: |
67 | MyTextureImage(int w, int h) |
68 | { |
69 | setSize(QSize(w, h)); |
70 | } |
71 | |
72 | protected: |
73 | void paint(QPainter *painter) |
74 | { |
75 | int w = painter->device()->width(); |
76 | int h = painter->device()->height(); |
77 | |
78 | painter->setViewport(x: 0, y: h, w, h: -h); |
79 | |
80 | // clear to white |
81 | painter->fillRect(x: 0, y: 0, w, h, b: QColor(255, 255, 255)); |
82 | |
83 | // draw some text |
84 | painter->setPen(QColor(255, 0, 0)); |
85 | painter->setFont(QFont("Times" , 30, QFont::Normal, true)); |
86 | painter->drawText(x: w / 8, y: h / 6, s: QDateTime::currentDateTime().toString()); |
87 | |
88 | painter->setPen(QPen(QBrush(QColor(0, 0, 0)) ,10)); |
89 | painter->setBrush(QColor(0, 0, 255)); |
90 | |
91 | // draw some circles |
92 | for (int i = 0; i < m_circleCount; i++) { |
93 | float r = w / 8.f; |
94 | float cw = 0.25 * w + 0.5 * h * (i % 2); |
95 | float ch = 0.375 * w + 0.375 * h * (i / 2); |
96 | painter->drawEllipse(center: QPointF(cw, ch), rx: r, ry: r); |
97 | } |
98 | |
99 | m_circleCount = (m_circleCount % 4) + 1; |
100 | } |
101 | |
102 | int m_circleCount = 1; |
103 | }; |
104 | |
105 | Scene::Scene(Qt3DCore::QEntity *rootEntity) |
106 | : m_rootEntity(rootEntity) |
107 | { |
108 | // Cuboid shape data |
109 | Qt3DExtras::QCuboidMesh *cuboid = new Qt3DExtras::QCuboidMesh(); |
110 | |
111 | // CuboidMesh Transform |
112 | m_transform = new Qt3DCore::QTransform(); |
113 | m_transform->setScale(4.0f);; |
114 | |
115 | // create texture |
116 | m_paintedTextureImage = new MyTextureImage(128, 128); |
117 | m_paintedTextureImage->update(); |
118 | |
119 | Qt3DRender::QTexture2D *tex = new Qt3DRender::QTexture2D(); |
120 | tex->addTextureImage(textureImage: m_paintedTextureImage); |
121 | |
122 | Qt3DExtras::QDiffuseMapMaterial *mat = new Qt3DExtras::QDiffuseMapMaterial(); |
123 | mat->setAmbient(QColor(64, 64, 64)); |
124 | mat->setSpecular(QColor(255, 255, 255)); |
125 | mat->setDiffuse(tex); |
126 | |
127 | //Cuboid |
128 | m_cuboidEntity = new Qt3DCore::QEntity(m_rootEntity); |
129 | m_cuboidEntity->addComponent(comp: cuboid); |
130 | m_cuboidEntity->addComponent(comp: mat); |
131 | m_cuboidEntity->addComponent(comp: m_transform); |
132 | |
133 | QTimer *timer = new QTimer(this); |
134 | connect(sender: timer, signal: &QTimer::timeout, receiver: this, slot: &Scene::updateTimer); |
135 | timer->start(msec: 50); |
136 | } |
137 | |
138 | Scene::~Scene() |
139 | { |
140 | } |
141 | |
142 | void Scene::redrawTexture() |
143 | { |
144 | m_paintedTextureImage->update(); |
145 | } |
146 | |
147 | void Scene::setSize(QSize size) |
148 | { |
149 | m_paintedTextureImage->setSize(size); |
150 | } |
151 | |
152 | void Scene::updateTimer() |
153 | { |
154 | m_transform->setRotation(QQuaternion::fromAxisAndAngle(x: 0, y: 1, z: 0, angle: m_angle)); |
155 | m_angle += 0.4f; |
156 | } |
157 | |