Qt Quick 3D - Custom Geometry Example

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 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
         }
     }
 }