mirror of https://github.com/qt/qt3d.git
113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
// Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
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#include "scene.h"
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#include <QtCore/QDebug>
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#include <QtCore/QTimer>
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#include <QtCore/QDateTime>
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#include <QtGui/QPainter>
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#include <QtGui/qquaternion.h>
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#include <Qt3DRender/QPaintedTextureImage>
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#include <Qt3DRender/QTexture>
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#include <Qt3DRender/QGeometryRenderer>
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#include <Qt3DExtras/QCuboidMesh>
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#include <Qt3DExtras/QDiffuseMapMaterial>
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class MyTextureImage : public Qt3DRender::QPaintedTextureImage
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{
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public:
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MyTextureImage(int w, int h)
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{
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setSize(QSize(w, h));
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}
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protected:
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void paint(QPainter *painter) override
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{
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int w = painter->device()->width();
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int h = painter->device()->height();
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painter->setViewport(0, h, w, -h);
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// clear to white
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painter->fillRect(0, 0, w, h, QColor(255, 255, 255));
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// draw some text
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painter->setPen(QColor(255, 0, 0));
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painter->setFont(QFont("Times", 30, QFont::Normal, true));
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painter->drawText(w / 8, h / 6, QDateTime::currentDateTime().toString());
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painter->setPen(QPen(QBrush(QColor(0, 0, 0)) ,10));
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painter->setBrush(QColor(0, 0, 255));
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// draw some circles
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for (int i = 0; i < m_circleCount; i++) {
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float r = w / 8.f;
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float cw = 0.25 * w + 0.5 * h * (i % 2);
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float ch = 0.375 * w + 0.375 * h * (i / 2);
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painter->drawEllipse(QPointF(cw, ch), r, r);
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}
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m_circleCount = (m_circleCount % 4) + 1;
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}
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int m_circleCount = 1;
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};
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Scene::Scene(Qt3DCore::QEntity *rootEntity)
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: m_rootEntity(rootEntity)
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{
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// Cuboid shape data
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Qt3DExtras::QCuboidMesh *cuboid = new Qt3DExtras::QCuboidMesh();
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// CuboidMesh Transform
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m_transform = new Qt3DCore::QTransform();
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m_transform->setScale(4.0f);;
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// create texture
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m_paintedTextureImage = new MyTextureImage(128, 128);
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m_paintedTextureImage->update();
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Qt3DRender::QTexture2D *tex = new Qt3DRender::QTexture2D();
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tex->addTextureImage(m_paintedTextureImage);
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Qt3DExtras::QDiffuseMapMaterial *mat = new Qt3DExtras::QDiffuseMapMaterial();
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mat->setAmbient(QColor(64, 64, 64));
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mat->setSpecular(QColor(255, 255, 255));
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mat->setDiffuse(tex);
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//Cuboid
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m_cuboidEntity = new Qt3DCore::QEntity(m_rootEntity);
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m_cuboidEntity->addComponent(cuboid);
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m_cuboidEntity->addComponent(mat);
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m_cuboidEntity->addComponent(m_transform);
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QTimer *timer = new QTimer(this);
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connect(timer, &QTimer::timeout, this, &Scene::updateTimer);
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timer->start(50);
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}
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Scene::~Scene()
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{
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}
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void Scene::redrawTexture()
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{
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m_paintedTextureImage->update();
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}
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void Scene::setSize(QSize size)
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{
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m_paintedTextureImage->setSize(size);
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}
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void Scene::updateTimer()
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{
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m_transform->setRotation(QQuaternion::fromAxisAndAngle(0, 1, 0, m_angle));
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m_angle += 0.4f;
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}
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