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.
  **
  ** $QT_BEGIN_LICENSE:LGPL3$
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  ** accordance with the commercial license agreement provided with the
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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
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  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"
              }
          ]
      }
  }