Qt 5.6 | Qt 3D | Qt 3D: Materials C++ Example | main.cpp Example File

Qt 5.6.3 Reference Documentation

# main.cpp Example File

materials-cpp/main.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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      ** GNU Lesser General Public License Usage
      ** Alternatively, this file may be used under the terms of the GNU Lesser
      ** General Public License version 3 as published by the Free Software
      ** Foundation and appearing in the file LICENSE.LGPLv3 included in the
      ** packaging of this file. Please review the following information to
      ** ensure the GNU Lesser General Public License version 3 requirements
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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
      ** Software Foundation and appearing in the file LICENSE.GPL included in
      ** the packaging of this file. Please review the following information to
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      #include <QGuiApplication>

      #include <window.h>
      #include <Qt3DCore/QEntity>
      #include <Qt3DCore/QAspectEngine>
      #include <Qt3DCore/QCamera>

      #include <Qt3DInput/QInputAspect>

      #include <Qt3DRender/QRenderAspect>
      #include <Qt3DRender/QPhongMaterial>
      #include <Qt3DRender/QDiffuseMapMaterial>
      #include <Qt3DRender/QForwardRenderer>
      #include <Qt3DRender/QFrameGraph>
      #include <Qt3DRender/QTextureImage>

      #include "planeentity.h"
      #include "rotatingtrefoilknot.h"
      #include "barrel.h"
      #include "houseplant.h"

      int main(int argc, char* argv[])
      {
          QGuiApplication app(argc, argv);

          Window view;
          Qt3DCore::QAspectEngine engine;
          engine.registerAspect(new Qt3DRender::QRenderAspect());
          Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
          engine.registerAspect(input);
          QVariantMap data;
          data.insert(QStringLiteral("surface"), QVariant::fromValue(static_cast<QSurface *>(&view)));
          data.insert(QStringLiteral("eventSource"), QVariant::fromValue(&view));
          engine.setData(data);

          // Scene Root
          Qt3DCore::QEntity *sceneRoot = new Qt3DCore::QEntity();

          // Scene Camera
          Qt3DCore::QCamera *basicCamera = new Qt3DCore::QCamera(sceneRoot);
          basicCamera->setProjectionType(Qt3DCore::QCameraLens::PerspectiveProjection);
          basicCamera->setAspectRatio(view.width() / view.height());
          basicCamera->setUpVector(QVector3D(0.0f, 1.0f, 0.0f));
          basicCamera->setViewCenter(QVector3D(0.0f, 3.5f, 0.0f));
          basicCamera->setPosition(QVector3D(0.0f, 3.5f, 25.0f));
          // For camera controls
          input->setCamera(basicCamera);

          // Forward Renderer FrameGraph
          Qt3DRender::QFrameGraph *frameGraphComponent = new Qt3DRender::QFrameGraph(sceneRoot);
          Qt3DRender::QForwardRenderer *forwardRenderer = new Qt3DRender::QForwardRenderer();
          forwardRenderer->setCamera(basicCamera);
          frameGraphComponent->setActiveFrameGraph(forwardRenderer);
          sceneRoot->addComponent(frameGraphComponent);

          // Scene floor
          PlaneEntity *planeEntity = new PlaneEntity(sceneRoot);
          planeEntity->mesh()->setHeight(100.0f);
          planeEntity->mesh()->setWidth(100.0f);
          planeEntity->mesh()->setMeshResolution(QSize(20, 20));

          Qt3DRender::QNormalDiffuseSpecularMapMaterial *normalDiffuseSpecularMapMaterial = new Qt3DRender::QNormalDiffuseSpecularMapMaterial();
          normalDiffuseSpecularMapMaterial->setTextureScale(10.0f);
          normalDiffuseSpecularMapMaterial->setShininess(80.0f);
          normalDiffuseSpecularMapMaterial->setAmbient(QColor::fromRgbF(0.2f, 0.2f, 0.2f, 1.0f));

          Qt3DRender::QTextureImage *diffuseImage = new Qt3DRender::QTextureImage();
          diffuseImage->setSource(QUrl(QStringLiteral("qrc:/assets/textures/pattern_09/diffuse.webp")));
          normalDiffuseSpecularMapMaterial->diffuse()->addTextureImage(diffuseImage);

          Qt3DRender::QTextureImage *specularImage = new Qt3DRender::QTextureImage();
          specularImage->setSource(QUrl(QStringLiteral("qrc:/assets/textures/pattern_09/specular.webp")));
          normalDiffuseSpecularMapMaterial->specular()->addTextureImage(specularImage);

          Qt3DRender::QTextureImage *normalImage = new Qt3DRender::QTextureImage();
          normalImage->setSource(QUrl((QStringLiteral("qrc:/assets/textures/pattern_09/normal.webp"))));
          normalDiffuseSpecularMapMaterial->normal()->addTextureImage(normalImage);

          planeEntity->addComponent(normalDiffuseSpecularMapMaterial);

          // Chest
          RenderableEntity *chest = new RenderableEntity(sceneRoot);
          chest->transform()->setScale(0.03f);
          chest->mesh()->setSource(QUrl(QStringLiteral("qrc:/assets/chest/Chest.obj")));
          Qt3DRender::QDiffuseMapMaterial *diffuseMapMaterial = new Qt3DRender::QDiffuseMapMaterial();
          diffuseMapMaterial->setSpecular(QColor::fromRgbF(0.2f, 0.2f, 0.2f, 1.0f));
          diffuseMapMaterial->setShininess(2.0f);

          Qt3DRender::QTextureImage *chestDiffuseImage = new Qt3DRender::QTextureImage();
          chestDiffuseImage->setSource(QUrl(QStringLiteral("qrc:/assets/chest/diffuse.webp")));
          diffuseMapMaterial->diffuse()->addTextureImage(chestDiffuseImage);

          chest->addComponent(diffuseMapMaterial);

          // TrefoilKnot
          RotatingTrefoilKnot *trefoil = new RotatingTrefoilKnot(sceneRoot);
          trefoil->setPosition(QVector3D(0.0f, 3.5f, 0.0f));
          trefoil->setScale(0.5f);
          Qt3DRender::QPhongMaterial *phongMaterial = new Qt3DRender::QPhongMaterial();
          phongMaterial->setDiffuse(QColor(204, 205, 75)); // Safari Yellow #cccd4b
          phongMaterial->setSpecular(Qt::white);
          trefoil->addComponent(phongMaterial);

          // Barrels
          Barrel *basicBarrel = new Barrel(sceneRoot);
          basicBarrel->transform()->setTranslation(QVector3D(8.0f, 0.0f, 0.0f));

          Barrel *rustyBarrel = new Barrel(sceneRoot);
          rustyBarrel->setDiffuse(Barrel::RustDiffuse);
          rustyBarrel->setSpecular(Barrel::RustSpecular);
          rustyBarrel->setBumps(Barrel::HardBumps);
          rustyBarrel->transform()->setTranslation(QVector3D(10.0f, 0.0f, 0.0f));

          Barrel *blueBarrel = new Barrel(sceneRoot);
          blueBarrel->setDiffuse(Barrel::Blue);
          blueBarrel->setBumps(Barrel::MiddleBumps);
          blueBarrel->transform()->setTranslation(QVector3D(12.0f, 0.0f, 0.0f));

          Barrel *greenBarrel = new Barrel(sceneRoot);
          greenBarrel->setDiffuse(Barrel::Green);
          greenBarrel->setBumps(Barrel::SoftBumps);
          greenBarrel->transform()->setTranslation(QVector3D(14.0f, 0.0f, 0.0f));

          Barrel *stainlessBarrel = new Barrel(sceneRoot);
          stainlessBarrel->setDiffuse(Barrel::StainlessSteelDiffuse);
          stainlessBarrel->setBumps(Barrel::NoBumps);
          stainlessBarrel->setSpecular(Barrel::StainlessSteelSpecular);
          stainlessBarrel->setShininess(150.0f);
          stainlessBarrel->transform()->setTranslation(QVector3D(16.0f, 0.0f, 0.0f));

          // Plants
          HousePlant *squareBamboo = new HousePlant(sceneRoot);
          squareBamboo->setPotShape(HousePlant::Square);
          squareBamboo->setPosition(QVector3D(4.0f, 0.0f, 0.0f));

          HousePlant *trianglePalm = new HousePlant(sceneRoot);
          trianglePalm->setPlantType(HousePlant::Palm);
          trianglePalm->setPotShape(HousePlant::Triangle);
          trianglePalm->setPosition(QVector3D(0.0f, 0.0f, 4.0f));

          HousePlant *spherePine = new HousePlant(sceneRoot);
          spherePine->setPlantType(HousePlant::Pine);
          spherePine->setPotShape(HousePlant::Sphere);
          spherePine->setPosition(QVector3D(-4.0f, 0.0f, 0.0f));

          HousePlant *crossSpikes = new HousePlant(sceneRoot);
          crossSpikes->setPlantType(HousePlant::Spikes);
          crossSpikes->setPosition(QVector3D(0.0f, 0.0f, -4.0f));

          HousePlant *crossPalm = new HousePlant(sceneRoot);
          crossPalm->setPlantType(HousePlant::Palm);
          crossPalm->setPosition(QVector3D(0.0f, 0.0f, -8.0f));
          crossPalm->setScale(0.05f);

          HousePlant *crossShrub = new HousePlant(sceneRoot);
          crossShrub->setPlantType(HousePlant::Shrub);
          crossShrub->setPosition(QVector3D(0.0f, 0.0f, 8.0f));
          crossShrub->setScale(0.05f);

          engine.setRootEntity(sceneRoot);
          view.show();

          return app.exec();
      }