Qt 5.6 | Qt 3D | Qt 3D: assimp Example | main.qml Example File

Qt 5.6.3 Reference Documentation

# main.qml Example File

assimp/main.qml

      /****************************************************************************
      **
      ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
      ** Contact: http://www.qt-project.org/legal
      **
      ** This file is part of the Qt3D module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:LGPL3$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see http://www.qt.io/terms-conditions. For further
      ** information use the contact form at http://www.qt.io/contact-us.
      **
      ** 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
      ** will be met: https://www.gnu.org/licenses/lgpl.html.
      **
      ** 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
      ** ensure the GNU General Public License version 2.0 requirements will be
      ** met: http://www.gnu.org/licenses/gpl-2.0.html.
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      import QtQuick 2.0 as Quick
      import Qt3D.Core 2.0
      import Qt3D.Render 2.0
      import Qt3D.Examples 2.0

      Entity
      {
          components: FrameGraph {
              activeFrameGraph: ForwardRenderer {
                  clearColor: Qt.rgba(0, 0.5, 1, 1)
                  camera: camera
              }
          }

          Camera {
              id: camera
              projectionType: CameraLens.PerspectiveProjection
              fieldOfView: 45
              aspectRatio: 16/9
              nearPlane : 0.1
              farPlane : 1000.0
              position: Qt.vector3d( 0.0, 0.0, -40.0 )
              upVector: Qt.vector3d( 0.0, 1.0, 0.0 )
              viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 )
          }

          Configuration  {
              controlledCamera: camera
          }

          // test_scene.dae contains three named nodes. Once the asynchronous loading of the
          // scene completes, we look up some of them.
          SceneHelper {
              id: sceneHelper
          }

          Quick.Component {
              id: animParamComp
              Quick.SequentialAnimation {
                  id: seqAnim
                  loops: Quick.Animation.Infinite
                  property variant target: null
                  Quick.ColorAnimation {
                      target: seqAnim.target
                      property: "value"
                      from: Qt.rgba(0, 0, 0, 1)
                      to: Qt.rgba(1, 1, 1, 1)
                      duration: 2000
                  }
                  Quick.ColorAnimation {
                      target: seqAnim.target
                      property: "value"
                      from: Qt.rgba(1, 1, 1, 1)
                      to: Qt.rgba(0, 0, 0, 1)
                      duration: 1000
                  }
              }
          }

          Quick.Component {
              id: animRotComp
              Quick.QtObject {
                  id: rotationData
                  property real userAngle: 0.0
                  property vector3d axis: Qt.vector3d(0, 0, 1)
                  Quick.NumberAnimation on userAngle {
                      from: 0
                      to: 360
                      duration: 5000
                      loops: Quick.Animation.Infinite
                  }
              }
          }

          Entity {
              components: [
                  Transform {
                      matrix: {
                          var m = Qt.matrix4x4();
                          m.rotate(90, Qt.vector3d(0, 1, 0));
                          return m;
                      }
                  },
                  SceneLoader {
                      id: sceneLoader
                      source: "qrc:/assets/test_scene.dae"
                      onStatusChanged: {
                          console.log("SceneLoader status: " + status);
                          if (status == SceneLoader.Loaded) {
                              console.log("Scene is ready");

                              // Now find the torus and animate one of the material effect's parameters.
                              var e = sceneHelper.findEntity(sceneLoader, "Torus");
                              console.log("Found entity: " + e + " its components are:");
                              for (var i = 0; i < e.components.length; ++i) {
                                  console.log("  " + e.components[i]);
                                  if (e.components[i].effect !== undefined) {
                                      var p = e.components[i].effect.parameters;
                                      for (var j = 0; j < p.length; ++j) {
                                          if (p[j].name === "kd") {
                                              var anim = animParamComp.createObject(p[j]);
                                              anim.target = p[j];
                                              anim.running = true;
                                              break;
                                          }
                                      }

                                  }
                              }

                              // Add an animated rotation transform to make Suzanne orbit around.
                              e = sceneHelper.findEntity(sceneLoader, "Suzanne");
                              var t = sceneHelper.findComponent(e, "Qt3DCore::QTransform");
                              if (!t)
                                  return;

                              // Add object with animation data as a child
                              var suzanneAnim = animRotComp.createObject(t);

                              // Query the existing transformation. We will use parts of this in
                              // the replacement animation
                              var origTranslation = t.translation;
                              var origRotation = t.rotation;
                              var origScale = t.scale;
                              console.log("origTranslation = " + origTranslation);
                              console.log("origRotation    = " + origRotation);
                              console.log("origScale       = " + origScale);

                              // Make a deep copy of the original translation. This will not be updated when the
                              // transformation's translation property gets updated due to the animation.
                              var constantTranslation = Qt.vector3d(origTranslation.x, origTranslation.y, origTranslation.z);

                              t.matrix = Qt.binding(function() {
                                  var m = Qt.matrix4x4();
                                  m.rotate(suzanneAnim.userAngle, suzanneAnim.axis);
                                  m.translate(constantTranslation);
                                  m.rotate(90, Qt.vector3d(1, 0, 0));
                                  m.scale(origScale);
                                  return m;
                              })
                          }
                      }
                  }
              ]
          }

          Entity {
              components: [
                  Transform {
                      scale: 0.2
                      translation: Qt.vector3d(0.0, -15.0, 0.0)
                  },
                  SceneLoader {
                      source: "qrc:/assets/chest/Chest.obj"
                  }
              ]
          }
      }