Visualizer.qml Example File

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  import Qt3D.Core 2.0
  import Qt3D.Render 2.0
  import Qt3D.Extras 2.0
  import QtQuick 2.2 as QQ2

  Entity {
      id: sceneRoot
      property int barRotationTimeMs: 1
      property int numberOfBars: 1
      property string animationState: "stopped"
      property real titleStartAngle: 95
      property real titleStopAngle: 5

      onAnimationStateChanged: {
          if (animationState == "playing") {
              mediaPlayer.play()
              if (progressTransformAnimation.paused)
                  progressTransformAnimation.resume()
              else
                  progressTransformAnimation.start()
          } else if (animationState == "paused") {
              mediaPlayer.pause()
              if (progressTransformAnimation.running)
                  progressTransformAnimation.pause()
          } else {
              mediaPlayer.stop()
              progressTransformAnimation.stop()
              progressTransform.progressAngle = progressTransform.defaultStartAngle
          }
      }

      QQ2.Item {
          id: stateItem

          state: animationState
          states: [
              QQ2.State {
                  name: "playing"
                  QQ2.PropertyChanges {
                      target: titlePrism
                      titleAngle: titleStopAngle
                  }
              },
              QQ2.State {
                  name: "paused"
                  QQ2.PropertyChanges {
                      target: titlePrism
                      titleAngle: titleStopAngle
                  }
              },
              QQ2.State {
                  name: "stopped"
                  QQ2.PropertyChanges {
                      target: titlePrism
                      titleAngle: titleStartAngle
                  }
              }
          ]

          transitions: QQ2.Transition {
              QQ2.NumberAnimation {
                  property: "titleAngle"
                  duration: 2000
                  running: false
              }
          }
      }

      function startVisualization() {
          progressTransformAnimation.duration = mediaPlayer.duration
          mainview.state = "playing"
          progressTransformAnimation.start()
      }

      Camera {
          id: camera
          projectionType: CameraLens.PerspectiveProjection
          fieldOfView: 45
          aspectRatio: 1820 / 1080
          nearPlane: 0.1
          farPlane: 1000.0
          position: Qt.vector3d(0.014, 0.956, 2.178)
          upVector: Qt.vector3d(0.0, 1.0, 0.0)
          viewCenter: Qt.vector3d(0.0, 0.7, 0.0)
      }

      Entity {
          components: [
              DirectionalLight {
                  intensity: 0.9
                  worldDirection: Qt.vector3d(0, 0.6, -1)
              }
          ]
      }

      RenderSettings {
          id: external_forward_renderer
          activeFrameGraph: ForwardRenderer {
              camera: camera
              clearColor: "transparent"
          }
      }

      components: [external_forward_renderer]

      // Bars
      CuboidMesh {
          id: barMesh
          xExtent: 0.1
          yExtent: 0.1
          zExtent: 0.1
      }

      NodeInstantiator {
          id: collection
          property int maxCount: parent.numberOfBars
          model: maxCount

          delegate: BarEntity {
              id: cubicEntity
              entityMesh: barMesh
              rotationTimeMs: sceneRoot.barRotationTimeMs
              entityIndex: index
              entityCount: sceneRoot.numberOfBars
              entityAnimationsState: animationState
              magnitude: 0
          }
      }

      // TitlePrism
      Entity {
          id: titlePrism
          property real titleAngle: titleStartAngle

          Entity {
              id: titlePlane

              PlaneMesh {
                  id: titlePlaneMesh
                  width: 550
                  height: 100
              }

              Transform {
                  id: titlePlaneTransform
                  scale: 0.003
                  translation: Qt.vector3d(0, 0.11, 0)
              }

              NormalDiffuseMapAlphaMaterial {
                  id: titlePlaneMaterial
                  diffuse: TextureLoader { source: "qrc:/images/demotitle.png" }
                  normal: TextureLoader { source: "qrc:/images/normalmap.png" }
                  shininess: 1.0
              }

              components: [titlePlaneMesh, titlePlaneMaterial, titlePlaneTransform]
          }

          // Song title
          Entity {
              id: songTitlePlane

              PlaneMesh {
                  id: songPlaneMesh
                  width: 550
                  height: 100
              }

              Transform {
                  id: songPlaneTransform
                  scale: 0.003
                  rotationX: 90
                  translation: Qt.vector3d(0, -0.03, 0.13)
              }

              property Material songPlaneMaterial: NormalDiffuseMapAlphaMaterial {
                  diffuse: TextureLoader { source: "qrc:/images/songtitle.png" }
                  normal: TextureLoader { source: "qrc:/images/normalmap.png" }
                  shininess: 1.0
              }

              components: [songPlaneMesh, songPlaneMaterial, songPlaneTransform]
          }

          property Transform titlePrismPlaneTransform: Transform {
              matrix: {
                  var m = Qt.matrix4x4()
                  m.translate(Qt.vector3d(-0.5, 1.3, -0.4))
                  m.rotate(titlePrism.titleAngle, Qt.vector3d(1, 0, 0))
                  return m;
              }
          }

          components: [titlePlane, songTitlePlane, titlePrismPlaneTransform]
      }

      // Circle to create the reflection effect
      Mesh {
          id: circleMesh
          source: "qrc:/meshes/circle.obj"
      }

      Entity {
          id: circleEntity
          property Material circleMaterial: PhongAlphaMaterial {
              alpha: 0.4
              ambient: "black"
              diffuse: "black"
              specular: "black"
              shininess: 10000
          }

          components: [circleMesh, circleMaterial]
      }

      // Progress
      Mesh {
          id: progressMesh
          source: "qrc:/meshes/progressbar.obj"
      }

      Transform {
          id: progressTransform
          property real defaultStartAngle: -90
          property real progressAngle: defaultStartAngle
          rotationY: progressAngle
      }

      Entity {
          property Material progressMaterial: PhongMaterial {
              ambient: "#80C342"
              diffuse: "black"
          }

          components: [progressMesh, progressMaterial, progressTransform]
      }

      QQ2.NumberAnimation {
          id: progressTransformAnimation
          target: progressTransform
          property: "progressAngle"
          duration: 0
          running: false
          from: progressTransform.defaultStartAngle
          to: -270
          onStopped: if (animationState != "stopped") animationState = "stopped"
      }
  }