- Qt 5.15
- Qt Quick 3D
- Qt Quick 3D Examples and Tutorials
- Qt Quick 3D - Lights Example
- Qt Quick 3D | Commercial or GPLv3

# Qt Quick 3D - Lights Example

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     import QtQuick 2.15
     import QtQuick.Window 2.12
     import QtQuick3D 1.15

     Window {
         width: 1280
         height: 720
         visible: true
         title: qsTr("Lights Example")

         View3D {
             anchors.fill: parent

             environment: SceneEnvironment {
                 clearColor: "#808080"
                 backgroundMode: SceneEnvironment.Color
                 antialiasingMode: SceneEnvironment.MSAA
                 antialiasingQuality: SceneEnvironment.High
             }

             PerspectiveCamera {
                 position: Qt.vector3d(0, 400, 600)
                 eulerRotation.x: -30
                 clipFar: 2000
             }

             DirectionalLight {
                 id: light1
                 color: Qt.rgba(1.0, 0.1, 0.1, 1.0)
                 ambientColor: Qt.rgba(0.1, 0.1, 0.1, 1.0)
                 position: Qt.vector3d(0, 200, 0)
                 rotation: Quaternion.fromEulerAngles(-135, -90, 0)
                 shadowMapQuality: Light.ShadowMapQualityHigh
                 visible: checkBox1.checked
                 castsShadow: checkBoxShadows.checked
                 brightness: slider1.sliderValue
                 SequentialAnimation on rotation {
                     loops: Animation.Infinite
                     QuaternionAnimation {
                         to: Quaternion.fromEulerAngles(-45, -90, 0)
                         duration: 2000
                         easing.type: Easing.InOutQuad
                     }
                     QuaternionAnimation {
                         to: Quaternion.fromEulerAngles(-135, -90, 0)
                         duration: 2000
                         easing.type: Easing.InOutQuad
                     }
                 }
             }

             PointLight {
                 id: light2
                 color: Qt.rgba(0.1, 1.0, 0.1, 1.0)
                 ambientColor: Qt.rgba(0.1, 0.1, 0.1, 1.0)
                 position: Qt.vector3d(0, 300, 0)
                 shadowMapFar: 2000
                 shadowMapQuality: Light.ShadowMapQualityHigh
                 visible: checkBox2.checked
                 castsShadow: checkBoxShadows.checked
                 brightness: slider2.sliderValue
                 SequentialAnimation on x {
                     loops: Animation.Infinite
                     NumberAnimation {
                         to: 400
                         duration: 2000
                         easing.type: Easing.InOutQuad
                     }
                     NumberAnimation {
                         to: 0
                         duration: 2000
                         easing.type: Easing.InOutQuad
                     }
                 }
             }

             AreaLight {
                 id: light3
                 color: Qt.rgba(0.1, 0.1, 1.0, 1.0)
                 ambientColor: Qt.rgba(0.1, 0.1, 0.1, 1.0)
                 position: Qt.vector3d(-50, 250, 150)
                 eulerRotation.x: -90
                 width: 1000
                 height: 200
                 shadowMapFar: 2000
                 shadowMapQuality: Light.ShadowMapQualityHigh
                 visible: checkBox3.checked
                 castsShadow: checkBoxShadows.checked
                 brightness: slider3.sliderValue
                 SequentialAnimation on z {
                     loops: Animation.Infinite
                     NumberAnimation {
                         to: -150
                         duration: 2000
                         easing.type: Easing.InOutQuad
                     }
                     NumberAnimation {
                         to: 150
                         duration: 2000
                         easing.type: Easing.InOutQuad
                     }
                 }
             }

             SpotLight {
                 id: light4
                 color: Qt.rgba(1.0, 0.9, 0.7, 1.0)
                 ambientColor: Qt.rgba(0.0, 0.0, 0.0, 0.0)
                 position: Qt.vector3d(0, 250, 0)
                 eulerRotation.x: -45
                 shadowMapFar: 2000
                 shadowMapQuality: Light.ShadowMapQualityHigh
                 visible: checkBox4.checked
                 castsShadow: checkBoxShadows.checked
                 brightness: slider4.sliderValue
                 coneAngle: 50
                 innerConeAngle: 30
                 PropertyAnimation on eulerRotation.y {
                     loops: Animation.Infinite
                     from: 0
                     to: -360
                     duration: 10000
                 }
             }

             Model {
                 source: "#Rectangle"
                 y: -200
                 scale: Qt.vector3d(15, 15, 15)
                 eulerRotation.x: -90
                 materials: [
                     DefaultMaterial {
                         diffuseColor: Qt.rgba(0.8, 0.6, 0.4, 1.0)
                     }
                 ]
             }
             Model {
                 source: "#Rectangle"
                 z: -400
                 scale: Qt.vector3d(15, 15, 15)
                 materials: [
                     DefaultMaterial {
                         diffuseColor: Qt.rgba(0.8, 0.8, 0.9, 1.0)
                     }
                 ]
             }

             Model {
                 source: "teapot.mesh"
                 y: -100
                 scale: Qt.vector3d(75, 75, 75)
                 materials: [
                     DefaultMaterial {
                         diffuseColor: Qt.rgba(0.9, 0.9, 0.9, 1.0)
                     }
                 ]

                 NumberAnimation  on eulerRotation.y {
                     loops: Animation.Infinite
                     duration: 5000
                     from: 0
                     to: -360
                 }
             }

             Model {
                 source: "#Cube"
                 position: light1.position
                 rotation: light1.rotation
                 property real size: slider1.highlight ? 0.2 : 0.1
                 scale: Qt.vector3d(size, size, size)
                 materials: [
                     DefaultMaterial {
                         diffuseColor: light1.color
                         opacity: 0.4
                     }
                 ]
             }
             Model {
                 source: "#Cube"
                 position: light2.position
                 rotation: light2.rotation
                 property real size: slider2.highlight ? 0.2 : 0.1
                 scale: Qt.vector3d(size, size, size)
                 materials: [
                     DefaultMaterial {
                         diffuseColor: light2.color
                         opacity: 0.4
                     }
                 ]
             }
             Model {
                 source: "#Cube"
                 position: light3.position
                 rotation: light3.rotation
                 property real size: slider3.highlight ? 0.2 : 0.1
                 scale: Qt.vector3d(size, size, size)
                 materials: [
                     DefaultMaterial {
                         diffuseColor: light3.color
                         opacity: 0.4
                     }
                 ]
             }
             Model {
                 source: "#Cube"
                 position: light4.position
                 rotation: light4.rotation
                 property real size: slider4.highlight ? 0.2 : 0.1
                 scale: Qt.vector3d(size, size, size)
                 materials: [
                     DefaultMaterial {
                         diffuseColor: light4.color
                         opacity: 0.4
                     }
                 ]
             }
         }

         Rectangle {
             anchors.fill: settingsArea
             anchors.margins: -10
             color: "#e0e0e0"
             border.color: "#000000"
             border.width: 1
             opacity: 0.8
         }

         Column {
             id: settingsArea
             anchors.top: parent.top
             anchors.topMargin: 20
             anchors.left: parent.left
             anchors.leftMargin: 20
             CustomCheckBox {
                 id: checkBoxShadows
                 text: qsTr("Enable Shadows")
                 checked: true
             }
             Item { width: 1; height: 40 }
             CustomCheckBox {
                 id: checkBox1
                 text: qsTr("Directional Light")
                 checked: true
             }
             CustomSlider {
                 id: slider1
                 sliderValue: 50
                 fromValue: 0
                 toValue: 100
             }
             Item { width: 1; height: 40 }
             CustomCheckBox {
                 id: checkBox2
                 text: qsTr("Point Light")
                 checked: true
             }
             CustomSlider {
                 id: slider2
                 sliderValue: 600
                 fromValue: 0
                 toValue: 1000
             }
             Item { width: 1; height: 40 }
             CustomCheckBox {
                 id: checkBox3
                 text: qsTr("Area Light")
                 checked: true
             }
             CustomSlider {
                 id: slider3
                 sliderValue: 200
                 fromValue: 0
                 toValue: 500
             }
             Item { width: 1; height: 40 }
             CustomCheckBox {
                 id: checkBox4
                 text: qsTr("Spot Light")
                 checked: true
             }
             CustomSlider {
                 id: slider4
                 sliderValue: 1000
                 fromValue: 0
                 toValue: 3000
             }
         }
     }