Qt 5.7 | Qt 3D | Qt 3D: Materials QML Example | Lights.qml Example File

Qt 5.7.1 Reference Documentation

# Lights.qml Example File

materials/Lights.qml

      /****************************************************************************
      **
      ** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the Qt3D module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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 https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, you may use this file under the terms of the BSD license
      ** as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      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
                          }
                      }
                  }
              ]
          }
      }