Qt Quick 3D Physics - Impeller Example | Qt Quick 3D Physics | Qt 6.12.0
Description: Demonstrates using trigger bodies and collision info.
Keywords: auto-generated

- Qt 6.12
- Qt Quick 3D Physics
- Qt Quick 3D Physics Examples and Tutorials
- Qt Quick 3D Physics - Impeller Example
- Qt Quick 3D Physics | Commercial or GPLv3

# Qt Quick 3D Physics - Impeller Example

     // Copyright (C) 2022 The Qt Company Ltd.
     // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
     import QtQuick
     import QtQuick3D
     import QtQuick3D.Physics

     Window {
         width: 640
         height: 480
         visible: true
         title: qsTr("Qt Quick 3D Physics - Impeller")

         PhysicsWorld {
             gravity: Qt.vector3d(0, -490, 0)
             scene: viewport.scene
         }

         View3D {
             id: viewport
             anchors.fill: parent

             environment: SceneEnvironment {
                 clearColor: "#d6dbdf"
                 backgroundMode: SceneEnvironment.Color
             }

             PerspectiveCamera {
                 position: Qt.vector3d(0, 200, 1000)
                 clipFar: 2000
                 clipNear: 1
             }

             DirectionalLight {
                 eulerRotation.x: -45
                 eulerRotation.y: 45
                 castsShadow: true
                 brightness: 1
                 shadowFactor: 50
             }

             StaticRigidBody {
                 position: Qt.vector3d(0, -100, 0)
                 eulerRotation: Qt.vector3d(-90, 0, 0)
                 collisionShapes: PlaneShape {}
                 Model {
                     source: "#Rectangle"
                     scale: Qt.vector3d(500, 500, 1)
                     materials: PrincipledMaterial {
                         baseColor: "green"
                     }
                     castsShadows: false
                     receivesShadows: true
                 }
             }

             DynamicRigidBody {
                 id: sphere
                 massMode: DynamicRigidBody.CustomDensity
                 density: 0.00001
                 position: Qt.vector3d(0, 600, 0)
                 property bool inArea: false
                 sendContactReports: true
                 receiveTriggerReports: true

                 onEnteredTriggerBody: {
                     inArea = true
                 }
                 onExitedTriggerBody: {
                     inArea = false
                 }

                 collisionShapes: SphereShape {}
                 Model {
                     source: "#Sphere"
                     materials: PrincipledMaterial {
                         baseColor: sphere.inArea ? "yellow" : "red"
                     }
                 }
             }

             TriggerBody {
                 position: Qt.vector3d(0, 350, 0)
                 scale: Qt.vector3d(1, 2, 1)

                 collisionShapes: BoxShape {
                     id: boxShape
                 }
                 Model {
                     source: "#Cube"
                     materials: PrincipledMaterial {
                         baseColor: Qt.rgba(1, 0, 1, 0.2)
                         alphaMode: PrincipledMaterial.Blend
                     }
                 }
             }

             StaticRigidBody {
                 position: Qt.vector3d(0, 0, 0)
                 scale: Qt.vector3d(2, 2, 2)
                 receiveContactReports: true

                 collisionShapes: SphereShape {}

                 Model {
                     source: "#Sphere"
                     materials: PrincipledMaterial {
                         baseColor: "blue"
                     }
                 }

                 onBodyContact: (body, positions, impulses, normals) => {
                     for (let normal of normals) {
                         let velocity = normal.times(-700)
                         if (body instanceof DynamicRigidBody) {
                             (body as DynamicRigidBody).setLinearVelocity(velocity)
                         }
                     }
                 }
             }
         }
     }