mirror of https://github.com/qt/qt3d.git
144 lines
4.8 KiB
C++
144 lines
4.8 KiB
C++
// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
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#include "entity.h"
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#include <QGuiApplication>
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#include <QPropertyAnimation>
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#include <QUrl>
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#include <QTimer>
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#include <Qt3DCore/QEntity>
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#include <Qt3DRender/QCamera>
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#include <Qt3DCore/QTransform>
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#include <Qt3DCore/qaspectengine.h>
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#include <Qt3DInput/QInputAspect>
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#include <Qt3DRender/QParameter>
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#include <Qt3DExtras/QCylinderMesh>
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#include <Qt3DRender/QRenderAspect>
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#include <Qt3DRender/QGeometryRenderer>
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#include <Qt3DRender/QCameraSelector>
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#include <Qt3DExtras/QPhongMaterial>
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#include <Qt3DExtras/QForwardRenderer>
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#include <qmath.h>
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#include <Qt3DExtras/qt3dwindow.h>
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#include <Qt3DExtras/qfirstpersoncameracontroller.h>
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#include <Qt3DRender/QRenderSurfaceSelector>
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#include <Qt3DRender/QCameraSelector>
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#include <Qt3DRender/QViewport>
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#include <Qt3DRender/QNoDraw>
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#include <Qt3DRender/QDebugOverlay>
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using namespace Qt3DCore;
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using namespace Qt3DRender;
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int main(int ac, char **av)
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{
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QGuiApplication app(ac, av);
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Qt3DExtras::Qt3DWindow view;
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// FrameGraph
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{
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QRenderSurfaceSelector *surfaceSelector = new QRenderSurfaceSelector();
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QCameraSelector *cameraSelector = new Qt3DRender::QCameraSelector(surfaceSelector);
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cameraSelector->setCamera(view.camera());
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QClearBuffers *clearBuffers = new Qt3DRender::QClearBuffers(cameraSelector);
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clearBuffers->setClearColor(QColor(Qt::gray));
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clearBuffers->setBuffers(QClearBuffers::ColorDepthBuffer);
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new QNoDraw(clearBuffers);
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const QRectF viewports[] = {
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{0.0f, 0.0f, 0.25f, 0.25f},
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{0.25f, 0.0f, 0.25f, 0.25f},
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{0.5f, 0.0f, 0.25f, 0.25f},
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{0.75f, 0.0f, 0.25f, 0.25f},
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{0.0f, 0.25f, 0.25f, 0.25f},
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{0.25f, 0.25f, 0.25f, 0.25f},
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{0.5f, 0.25f, 0.25f, 0.25f},
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{0.75f, 0.25f, 0.25f, 0.25f},
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{0.0f, 0.5f, 0.25f, 0.25f},
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{0.25f, 0.5f, 0.25f, 0.25f},
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{0.5f, 0.5f, 0.25f, 0.25f},
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{0.75f, 0.5f, 0.25f, 0.25f},
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{0.0f, 0.75f, 0.25f, 0.25f},
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{0.25f, 0.75f, 0.25f, 0.25f},
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{0.5f, 0.75f, 0.25f, 0.25f},
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{0.75f, 0.75f, 0.25f, 0.25f},
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};
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for (const QRectF &vp : viewports) {
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QViewport *viewport = new Qt3DRender::QViewport(cameraSelector);
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viewport->setNormalizedRect(vp);
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}
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new QDebugOverlay(qobject_cast<Qt3DCore::QNode *>(cameraSelector->children().last()));
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view.setActiveFrameGraph(surfaceSelector);
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}
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QEntity *root = new QEntity();
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// Mesh
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auto *mesh = new Qt3DExtras::QCylinderMesh(root);
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mesh->setRings(50.0f);
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mesh->setSlices(30.0f);
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mesh->setRadius(2.5f);
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mesh->setLength(5.0f);
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// Material
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auto phongMaterial = new Qt3DExtras::QPhongMaterial(root);
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auto effect = phongMaterial->effect();
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// Camera
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QCamera *cameraEntity = view.camera();
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cameraEntity->lens()->setPerspectiveProjection(45.0f, 16.0f/9.0f, 0.1f, 1000.0f);
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cameraEntity->setPosition(QVector3D(0, 250.0f, 50.0f));
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cameraEntity->setUpVector(QVector3D(0, 1, 0));
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cameraEntity->setViewCenter(QVector3D(0, 0, 0));
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// For camera controls
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Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(root);
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camController->setCamera(cameraEntity);
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const double radius = 100.0;
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const int max = 1000;
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const double det = 1.0 / max;
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// Scene
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for (int i = 0; i < max; i++) {
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Entity *e = new Entity(effect, root);
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e->addComponent(mesh);
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const double angle = M_PI * 2.0 * double(i) * det * 10.;
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e->setDiffuseColor(QColor(int(qFabs(qCos(angle)) * 255.0), 204, 75));
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e->setPosition(QVector3D(float(radius * qCos(angle)),
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float(-200.0 * i * det),
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float(radius * qSin(angle))));
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e->setTheta(30.0f * i);
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e->setPhi(45.0f * i);
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QPropertyAnimation *animX = new QPropertyAnimation(e, QByteArrayLiteral("theta"));
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animX->setDuration(2400 * (i + 1));
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animX->setStartValue(QVariant::fromValue(i * 30.0f));
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animX->setEndValue(QVariant::fromValue((i + 1) * 390.0f));
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animX->setLoopCount(-1);
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animX->start();
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QPropertyAnimation *animZ = new QPropertyAnimation(e, QByteArrayLiteral("phi"));
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animZ->setDuration(2400 * (i + 1));
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animZ->setStartValue(QVariant::fromValue(i * 20.0f));
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animZ->setEndValue(QVariant::fromValue((i + 1) * 380.0f));
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animZ->setLoopCount(-1);
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animZ->start();
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}
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view.setRootEntity(root);
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view.show();
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if (app.arguments().contains(("--bench")))
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QTimer::singleShot(25 * 1000, &app, &QCoreApplication::quit);
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return app.exec();
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}
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