Qt Quick 3D - Custom Geometry Example | Qt Quick 3D 6.5.1
Description: Demonstrates providing custom vertex data from C++.

- Qt 6.5
- Qt Quick 3D
- Qt Quick 3D Examples and Tutorials
- Qt Quick 3D - Custom Geometry Example
- Qt Quick 3D | Commercial or GPLv3

# Qt Quick 3D - Custom Geometry Example

     // Copyright (C) 2020 The Qt Company Ltd.
     // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

     import QtQuick
     import QtQuick.Controls
     import QtQuick.Layouts
     import QtQuick3D
     import QtQuick3D.Helpers
     import CustomGeometryExample

     Window {
         id: window
         width: 1280
         height: 720
         visible: true
         color: "#848895"

         View3D {
             id: v3d
             anchors.fill: parent
             camera: camera

             PerspectiveCamera {
                 id: camera
                 position: Qt.vector3d(0, 0, 600)
             }

             DirectionalLight {
                 position: Qt.vector3d(-500, 500, -100)
                 color: Qt.rgba(0.4, 0.2, 0.6, 1.0)
                 ambientColor: Qt.rgba(0.1, 0.1, 0.1, 1.0)
             }

             PointLight {
                 position: Qt.vector3d(0, 0, 100)
                 color: Qt.rgba(0.1, 1.0, 0.1, 1.0)
                 ambientColor: Qt.rgba(0.2, 0.2, 0.2, 1.0)
             }

             Model {
                 visible: radioGridGeom.checked
                 scale: Qt.vector3d(100, 100, 100)
                 geometry: GridGeometry {
                     id: grid
                     horizontalLines: 20
                     verticalLines: 20
                 }
                 materials: [
                     DefaultMaterial {
                         lineWidth: sliderLineWidth.value
                     }
                 ]
             }

             Model {
                 visible: radioCustGeom.checked
                 scale: Qt.vector3d(100, 100, 100)
                 geometry: ExampleTriangleGeometry {
                     normals: cbNorm.checked
                     normalXY: sliderNorm.value
                     uv: cbUV.checked
                     uvAdjust: sliderUV.value
                 }
                 materials: [
                     DefaultMaterial {
                         Texture {
                             id: baseColorMap
                             source: "qt_logo_rect.png"
                         }
                         cullMode: DefaultMaterial.NoCulling
                         diffuseMap: cbTexture.checked ? baseColorMap : null
                         specularAmount: 0.5
                     }
                 ]
             }

             Model {
                 visible: radioPointGeom.checked
                 scale: Qt.vector3d(100, 100, 100)
                 geometry: ExamplePointGeometry { }
                 materials: [
                     DefaultMaterial {
                         lighting: DefaultMaterial.NoLighting
                         cullMode: DefaultMaterial.NoCulling
                         diffuseColor: "yellow"
                         pointSize: sliderPointSize.value
                     }
                 ]
             }
         }

         WasdController {
             controlledObject: camera
         }

         ColumnLayout {
             Label {
                 text: "Use WASD and mouse to navigate"
                 font.bold: true
             }
             ButtonGroup {
                 buttons: [ radioGridGeom, radioCustGeom, radioPointGeom ]
             }
             RadioButton {
                 id: radioGridGeom
                 text: "GridGeometry"
                 checked: true
                 focusPolicy: Qt.NoFocus
             }
             RadioButton {
                 id: radioCustGeom
                 text: "Custom geometry from application (triangle)"
                 checked: false
                 focusPolicy: Qt.NoFocus
             }
             RadioButton {
                 id: radioPointGeom
                 text: "Custom geometry from application (points)"
                 checked: false
                 focusPolicy: Qt.NoFocus
             }
             RowLayout {
                 visible: radioGridGeom.checked
                 ColumnLayout {
                     Button {
                         text: "More X cells"
                         onClicked: grid.verticalLines += 1
                         focusPolicy: Qt.NoFocus
                     }
                     Button  {
                         text: "Fewer X cells"
                         onClicked: grid.verticalLines -= 1
                         focusPolicy: Qt.NoFocus
                     }
                 }
                 ColumnLayout {
                     Button {
                         text: "More Y cells"
                         onClicked: grid.horizontalLines += 1
                         focusPolicy: Qt.NoFocus
                     }
                     Button  {
                         text: "Fewer Y cells"
                         onClicked: grid.horizontalLines -= 1
                         focusPolicy: Qt.NoFocus
                     }
                 }
             }
             RowLayout {
                 visible: radioGridGeom.checked
                 Label {
                     text: "Line width (if supported)"
                 }
                 Slider {
                     id: sliderLineWidth
                     from: 1.0
                     to: 10.0
                     stepSize: 0.5
                     value: 1.0
                     focusPolicy: Qt.NoFocus
                 }
             }
             RowLayout {
                 visible: radioCustGeom.checked
                 CheckBox {
                     id: cbNorm
                     text: "provide normals in geometry"
                     checked: false
                     focusPolicy: Qt.NoFocus
                 }
                 RowLayout {
                     Label {
                         text: "manual adjust"
                     }
                     Slider {
                         id: sliderNorm
                         from: 0.0
                         to: 1.0
                         stepSize: 0.01
                         value: 0.0
                         focusPolicy: Qt.NoFocus
                     }
                 }
             }
             RowLayout {
                 visible: radioCustGeom.checked
                 CheckBox {
                     id: cbTexture
                     text: "enable base color map"
                     checked: false
                     focusPolicy: Qt.NoFocus
                 }
                 CheckBox {
                     id: cbUV
                     text: "provide UV in geometry"
                     checked: false
                     focusPolicy: Qt.NoFocus
                 }
                 RowLayout {
                     Label {
                         text: "UV adjust"
                     }
                     Slider {
                         id: sliderUV
                         from: 0.0
                         to: 1.0
                         stepSize: 0.01
                         value: 0.0
                         focusPolicy: Qt.NoFocus
                     }
                 }
             }
             RowLayout {
                 visible: radioPointGeom.checked
                 ColumnLayout {
                     RowLayout {
                         Label {
                             text: "Point size (if supported)"
                         }
                         Slider {
                             id: sliderPointSize
                             from: 1.0
                             to: 16.0
                             stepSize: 1.0
                             value: 1.0
                             focusPolicy: Qt.NoFocus
                         }
                     }
                 }
             }
             TextArea {
                 id: infoText
                 readOnly: true
             }
         }
     }