Qt 5.6 | Qt 3D | Qt 3D: Basic Shapes C++ Example | scenemodifier.cpp Example File

Qt 5.6.3 Reference Documentation

# scenemodifier.cpp Example File

basicshapes-cpp/scenemodifier.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
      ** Contact: http://www.qt-project.org/legal
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      ** This file is part of the Qt3D module of the Qt Toolkit.
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      ** Alternatively, this file may be used under the terms of the GNU Lesser
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      ** GNU General Public License Usage
      ** Alternatively, this file may be used under the terms of the GNU
      ** General Public License version 2.0 or later as published by the Free
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      #include "scenemodifier.h"

      #include <QtCore/QDebug>

      SceneModifier::SceneModifier(Qt3DCore::QEntity *rootEntity)
          : m_rootEntity(rootEntity)
      {

          // Torus shape data
          m_torus = new Qt3DRender::QTorusMesh();
          m_torus->setRadius(1.0f);
          m_torus->setMinorRadius(0.4f);
          m_torus->setRings(100);
          m_torus->setSlices(20);

          // TorusMesh Transform
          Qt3DCore::QTransform *torusTransform = new Qt3DCore::QTransform();
          torusTransform->setScale(2.0f);
          torusTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(0.0f, 1.0f, 0.0f), 25.0f));
          torusTransform->setTranslation(QVector3D(4.0f, 4.0f, 0.0f));

          Qt3DRender::QPhongMaterial *torusMaterial = new Qt3DRender::QPhongMaterial();
          torusMaterial->setDiffuse(QColor(QRgb(0xbeb32b)));

          // Torus
          m_torusEntity = new Qt3DCore::QEntity(m_rootEntity);
          m_torusEntity->addComponent(m_torus);
          m_torusEntity->addComponent(torusMaterial);
          m_torusEntity->addComponent(torusTransform);

          // Cylinder shape data
          Qt3DRender::QCylinderMesh *cylinder = new Qt3DRender::QCylinderMesh();
          cylinder->setRadius(1);
          cylinder->setLength(3);
          cylinder->setRings(100);
          cylinder->setSlices(20);

          // CylinderMesh Transform
          Qt3DCore::QTransform *cylinderTransform = new Qt3DCore::QTransform();
          cylinderTransform->setScale(1.5f);
          cylinderTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1.0f, 0.0f, 0.0f), 45.0f));
          cylinderTransform->setTranslation(QVector3D(-4.0f, 4.0f, -1.5));

          Qt3DRender::QPhongMaterial *cylinderMaterial = new Qt3DRender::QPhongMaterial();
          cylinderMaterial->setDiffuse(QColor(QRgb(0x928327)));

          // Cylinder
          m_cylinderEntity = new Qt3DCore::QEntity(m_rootEntity);
          m_cylinderEntity->addComponent(cylinder);
          m_cylinderEntity->addComponent(cylinderMaterial);
          m_cylinderEntity->addComponent(cylinderTransform);

          // Cuboid shape data
          Qt3DRender::QCuboidMesh *cuboid = new Qt3DRender::QCuboidMesh();

          // CuboidMesh Transform
          Qt3DCore::QTransform *cuboidTransform = new Qt3DCore::QTransform();
          cuboidTransform->setScale(4.0f);
          cuboidTransform->setTranslation(QVector3D(4.0f, -4.0f, 0.0f));

          Qt3DRender::QPhongMaterial *cuboidMaterial = new Qt3DRender::QPhongMaterial();
          cuboidMaterial->setDiffuse(QColor(QRgb(0x665423)));

          //Cuboid
          m_cuboidEntity = new Qt3DCore::QEntity(m_rootEntity);
          m_cuboidEntity->addComponent(cuboid);
          m_cuboidEntity->addComponent(cuboidMaterial);
          m_cuboidEntity->addComponent(cuboidTransform);

          // Sphere shape data
          Qt3DRender::QSphereMesh *sphereMesh = new Qt3DRender::QSphereMesh();
          sphereMesh->setRings(20);
          sphereMesh->setSlices(20);
          sphereMesh->setRadius(2);

          // Sphere mesh transform
          Qt3DCore::QTransform *sphereTransform = new Qt3DCore::QTransform();

          sphereTransform->setScale(1.3f);
          sphereTransform->setTranslation(QVector3D(-4.0f, -4.0f, 0.0f));

          Qt3DRender::QPhongMaterial *sphereMaterial = new Qt3DRender::QPhongMaterial();
          sphereMaterial->setDiffuse(QColor(QRgb(0xa69929)));

          // Sphere
          m_sphereEntity = new Qt3DCore::QEntity(m_rootEntity);
          m_sphereEntity->addComponent(sphereMesh);
          m_sphereEntity->addComponent(sphereMaterial);
          m_sphereEntity->addComponent(sphereTransform);
      }

      SceneModifier::~SceneModifier()
      {
      }

      void SceneModifier::enableTorus(bool enabled)
      {
          m_torusEntity->setParent(enabled ? m_rootEntity : Q_NULLPTR);
      }

      void SceneModifier::enableCylinder(bool enabled)
      {
          m_cylinderEntity->setParent(enabled ? m_rootEntity : Q_NULLPTR);
      }

      void SceneModifier::enableCuboid(bool enabled)
      {
          m_cuboidEntity->setParent(enabled ? m_rootEntity : Q_NULLPTR);
      }

      void SceneModifier::enableSphere(bool enabled)
      {
          m_sphereEntity->setParent(enabled ? m_rootEntity : Q_NULLPTR);
      }