Qt 5.9 | Qt 3D | Qt 3D: Materials QML Example | Lights.qml Example File

Qt 5.9.3 Reference Documentation

# Lights.qml Example File

materials/Lights.qml

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      import QtQuick 2.1
      import Qt3D.Core 2.0
      import Qt3D.Render 2.0
      import Qt3D.Input 2.0
      import Qt3D.Extras 2.0

      Entity {
          id: lights

          // Point Light (pulsing)
          Entity {
              components: [
                  PointLight {
                      color: "red"
                      intensity: 0.3
                      constantAttenuation: 1.0
                      linearAttenuation: 0.0
                      quadraticAttenuation: 0.0025

                      NumberAnimation on intensity {
                          from: 0.3; to: 0.8;
                          running: true
                          loops: Animation.Infinite
                          duration: 1000
                          easing.type: Easing.CosineCurve
                      }
                  },
                  Transform {
                      translation: Qt.vector3d(0.0, 5.0, 0.0)
                  }
              ]
          }

          // 2 x Directional Lights (steady)
          Entity {
              components: [
                  DirectionalLight {
                      worldDirection: Qt.vector3d(0.3, -3.0, 0.0).normalized();
                      color: "#fbf9ce"
                      intensity: 0.3
                  }
              ]
          }

          Entity {
              components: [
                  DirectionalLight {
                      worldDirection: Qt.vector3d(-0.3, -0.3, 0.0).normalized();
                      color: "#9cdaef"
                      intensity: 0.15
                  }
              ]
          }

          // Spot Light (sweeping)
          Entity {
              components: [
                  SpotLight {
                      localDirection: Qt.vector3d(0.0, -1.0, 0.0)
                      color: "white"
                      intensity: 0.6
                  },
                  Transform {
                      id: spotLightTransform
                      translation: Qt.vector3d(0.0, 5.0, 0.0)
                      rotationZ: -60.0

                      SequentialAnimation {
                          loops: Animation.Infinite
                          running: true

                          NumberAnimation {
                              target: spotLightTransform
                              property: "rotationZ"
                              from: -60; to: 60
                              duration: 2000
                              easing.type: Easing.InOutQuad
                          }

                          NumberAnimation {
                              target: spotLightTransform
                              property: "rotationZ"
                              from: 60; to: -60
                              duration: 2000
                              easing.type: Easing.InOutQuad
                          }
                      }
                  }
              ]
          }
      }