Qt3D
---------------------------------------------- 概述 - 请阅读QtHelp: Qt 3D Overview https://www.kdab.com/overview-qt3d-2-0-part-1/ http://blog.csdn.net/iron_lzn/article/details/51363959 - 上youtube 搜索 Qt 3D 视频 － 上kdab公司的网站，Qt3D的主要代码都是kdab公司提供的 - 建模示例：https://www.kdab.com/qt-3d-animation-easter-teaser/ ---------------------------------------------- 功能 2D and 3D rendering : 2d/3d渲染 Meshes and Geometry : 面片和坐标 Materials : 材质 Shaders : 着色器 Shadow mapping : 阴影贴图（一种实时阴影技术） Ambient occlusion : 环境光遮蔽（一种全局光技术） High dynamic range : 高动态范围（HDR) Deferred rendering : 延迟渲染（一种多光源渲染技术） Multitexturing : 多材质 Instanced rendering : 实例渲染 Uniform Buffer Objects : 统一缓冲对象(HBO) 相关库 QT += 3dcore 3drender 3dinput 3dlogic 3dextras #include <Qt3DCore> #include <Qt3DRender> #include <Qt3DInput> #include <Qt3DLogic> #include <Qt3DExtras> QT += 3dcore 3drender 3dinput 3dlogic 3dextras qml quick 3dquick import Qt3D.Core 2.0 // 节点实体模型，基础变化 import Qt3D.Render 2.0 // 相机，缓冲，滤镜，图层，面片，光照，特效，材质，Shader， import Qt3D.Input 2.0 // 输入 import Qt3D.Logic 2.0 // 每帧动画控制 import Qt3D.Extras 2.0 // 第一人称相机，轨道相机，反射贴图，基础模型等 继承关系 Node // qt3d 所有类的基类 Entity // Camera // Component3D // Layer // Transform // CameraLens // ComputeCommand // FrameAction // InputSettings // KeyboardHandler // GeometryRenderer // Mesh // 面片 ConeMesh // 圆锥体 ConeMesh {bottomRadius: 0.05; topRadius: 0; length : 0.1; rings : 10; slices: 10}, CuboidMesh // 长方体 CylinderMesh // 圆柱体 CylinderMesh{length : size; radius : 0.05; rings : 10; slices: 10} PlaneMesh // 平面 PlaneMesh {width: 1.0; height: 1.0; meshResolution: Qt.size(2, 2)} SphereMesh // 球体 SphereMesh {radius: 1} TorusMesh // 三叶体 Light // 光照基类 DirectionLight // 方向光（如太阳） PointLight // 电光源（如灯泡） SportLight // 聚光 Material // Texture2D // DiffuseMapMaterial // 漫反射贴图材质 DiffuseSpecularMapMaterial // 漫反射高光贴图材质 GoochMaterial // Gooch shading model, popular in CAD and CAM applications NormalDiffuseMapMaterial // NormalDiffuseMapAlphaMaterial // NormalDiffuseSpecularMapMaterial // PhongMaterial // PhongAlphaMaterial // PerVertexColorMaterial // AbstractTextureImage // Effect // FilterKey // FrameGraphNode // FrameGraph 配置基类，用于控制渲染 LayerFilter // 层过滤（只显示指定层的对象） CameraSelector // 相机选择器 ClearBuffers // enables clearing of the specific render target buffers with specific values DispatchCompute // FrameGraph node to issue work for the compute shader on GPU FrustumCulling // enables frustum culling of the drawable entities based on the camera view and Geometry bounds of the entities NoDraw // Prevents from drawing anything RenderCapture // Used to request render capture. User can specify a captureId to identify the request. RenderSurfaceSelector // be used to select the surface RenderTargetSelector // s used to select active RenderTarget for the FrameGraph RenderPassFilter // RenderStateSet // SortPolicy // TechniqueFilter // Viewport // KeyboardDevice // RenderPass // RenderState // RenderTargetOutput // ShaderPrograme CameraController FirstPersonCameraController // 第一人称相机控制器（类似cs） OrbitCameraController // 轨道相机控制器（围绕物体旋转） Geometry // ConeGeometry // allows creation of a cone in 3D space CuboidGeometry // allows creation of a cuboid in 3D space. CylinderGeometry // PlaneGeometry // SphereGeometry // TorusGeometry // eg CuboidMesh { id: mesh property real multiplier: 0.0256 xExtent: 512 * multiplier yExtent: 768 * multiplier zExtent: 2.0 yzMeshResolution: Qt.size(20, 20) xzMeshResolution: Qt.size(20, 20) xyMeshResolution: Qt.size(20, 20) } 显示OpenGL版本 Rectangle { color: "black" Text { color: "white" anchors.centerIn: parent text: "Open%4 %1.%2 %3" .arg(OpenGLInfo.majorVersion) .arg(OpenGLInfo.minorVersion) .arg({0: "NoProfile", 1: "CoreProfile", 2: "CompatibilityProfile"}[OpenGLInfo.profile]) .arg({0: "Unspecified", 1: "GL", 2: "GLES"}[OpenGLInfo.renderableType]) styleColor: "#8b8b8b" style: Text.Sunken font.pointSize: 24 onTextChanged: { Resources.setGlInfo(OpenGLInfo); } } } ---------------------------------------------- Scene3D 提供3d运行场景，嵌在普通qml中 ---------------------------------------------- 属性 activeCamera : Camera3D activeLight : Light3D devicePixelRatio : float graphPositionQuery : point invalidSelectionPoint : point primarySubViewport : rect secondarySubViewport : rect secondarySubviewOnTop : bool selectionQueryPosition : point slicingActive : bool viewport : rect 示例 Scene3D { id: scene3d anchors.fill: parent anchors.margins: 10 focus: true aspects: ["input", "logic"] cameraAspectRatioMode: Scene3D.AutomaticAspectRatio AnimatedEntity {} } ---------------------------------------------- Entity Entity有个属性component，里面可以容纳 Mesh, Transformation, Audio, Material.....， 这是一种很灵活的方式，可简化3d对象类的层次，也便于扩展。 ---------------------------------------------- 标准写法 Entity { components: [ Mesh {source: "assets/obj/toyplane.obj"}, PhongMaterial {diffuse: "white"; shininess: 50} ] } 从文件中加载场景 Entity { components: [ SceneLoader {source: "qrc:/assets/test_scene.dae"} ] } ---------------------------------------------- Camera import Qt3D.Core 2.0 import Qt3D.Render 2.0 ---------------------------------------------- 第一人称三角透视相机 Camera { id: mainCamera objectName: "mainCamera" projectionType: CameraLens.PerspectiveProjection fieldOfView: 22.5 aspectRatio: _window.width / _window.height onAspectRatioChanged: console.log( "aspectRatio = " + aspectRatio ) nearPlane: 0.01 farPlane: 1000.0 viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 ) upVector: Qt.vector3d( 0.0, 1.0, 0.0 ) } FirstPersonCameraController { camera: mainCamera } 轨道透视相机（右键按住拖动，可对准原点旋转相机） components: [ RenderSettings { activeFrameGraph: ForwardRenderer { clearColor: Qt.rgba(0, 0.5, 1, 1) camera: camera } }, InputSettings { } ] Camera { id: camera projectionType: CameraLens.PerspectiveProjection fieldOfView: 45 aspectRatio: 16/9 nearPlane : 0.1 farPlane : 1000.0 position: Qt.vector3d( 0.0, 0.0, -40.0 ) upVector: Qt.vector3d( 0.0, 1.0, 0.0 ) viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 ) } OrbitCameraController { camera: camera} 多角度观测 Viewport { id: mainViewport normalizedRect: Qt.rect(0, 0, 1, 1) ClearBuffers { buffers: ClearBuffers.ColorDepthBuffer } Viewport { id: topLeftViewport normalizedRect: Qt.rect(0, 0, 0.5, 0.5) CameraSelector { id: cameraSelectorTopLeftViewport } } Viewport { id: topRightViewport normalizedRect: Qt.rect(0.5, 0, 0.5, 0.5) CameraSelector { id: cameraSelectorTopRightViewport } } Viewport { id: bottomLeftViewport normalizedRect: Qt.rect(0, 0.5, 0.5, 0.5) CameraSelector { id: cameraSelectorBottomLeftViewport } } Viewport { id: bottomRightViewport normalizedRect: Qt.rect(0.5, 0.5, 0.5, 0.5) CameraSelector { id: cameraSelectorBottomRightViewport } } } ---------------------------------------------- Light ---------------------------------------------- 方向光（平行光，如太阳） Enity { components: [ DirectionalLight { worldDirection: Qt.vector3d(0.3, -3.0, 0.0).normalized(); color: "#fbf9ce" intensity: 0.3 } ] } 点光源（如灯泡） Entity { components: [ PointLight { color: "red" intensity: 0.3 constantAttenuation: 1.0 linearAttenuation: 0.0 quadraticAttenuation: 0.0025 } ] } 聚光（如舞台聚光灯） Entity { components: [ SpotLight { localDirection: Qt.vector3d(0.0, -1.0, 0.0) color: "white" intensity: 0.6 } ] } ---------------------------------------------- Material（材质） 贴图相关概念 https://zhidao.baidu.com/question/167602912.html http://www.cnblogs.com/xiuj/p/5875461.html ------------------------------------------- ambient : 环境色。物体自己发出的光。 diffuse map : 漫反射贴图(色彩贴图）, 它的作用是给模型上颜色和材质 specular map : 高光贴图，不同材质，在光照下，它们的反射光的强弱都不同 normal map : 法线贴图.用来表现凹凸 ------------------------------------------- gloss map : 指示着色器对物体的表面的某些部分着色更亮一点，某些部分更暗一点，因为Gloss Maps只需要单通道, 可用alpha通道的图或灰度图 emboss bump map : 做表面的浮雕效果的 opacity map : 透明贴图。透明通道制作头发或者损坏的衣服布料等等可以用到 shininess : 光泽（0-1） lighting map 和 AO map : 让材质制作更加逼真，更加方便 Qt3D中材质 用Material组件编写 提供了几种材质组件，通常是几种贴图方式的组合 PhongMaterial DiffuseMapMaterial NormalDiffuseMapMaterial GoochMaterial ---------------------------------------------- 简单色彩材质 色彩材质 ColorMaterial{ diffuseColor: Qt.rgba(0.2, 0.5, 0.3, 1.0) specularColor: Qt.rgba(0, 0, 0, 1.0) } Phong 基础光照模型材质 PhongMaterial { ambient: Qt.rgba( 0.02, 0.02, 0.02, 1.0 ) diffuse: Qt.rgba( 0.8, 0.0, 0.0, 1.0 ) specular: Qt.rgba( 0.8, 0.0, 0.0, 1.0 ) shininess: 1.0 } PhongAlphaMaterial（带透明通道的基础Phong光照模型材质） PhongMaterial { ambient: Qt.rgba( 0.02, 0.02, 0.02, 1.0 ) diffuse: Qt.rgba( 0.8, 0.0, 0.0, 1.0 ) specular: Qt.rgba( 0.8, 0.0, 0.0, 1.0 ) shininess: 1.0 alpha: 0.8 } GoochMaterial Gooch光照渲染模型。 常用于CAD和CAM程序，完全拟真不是该模型的目标， 该模型同时使用 color 和 brightness 来显示3d表面的弯曲部分; 该模型混合了漫反射光／冷光／暖光来产生渐变色带，冷光和暖光分别由alpha和beta参数影响。色带区间：[cool + alpha * diffuse, warm + beta * diffuse] 参数 shininess : real diffuse : color specular : color coolColor : color warmColor : color alpha : real beta : real PerVertexColorMaterial Default implementation for rendering the color properties set for each vertex 帮助上没有任何参数 漫反射贴图材质（Phong光照模型) 漫反射贴图材质（漫反射由贴图提供） DiffuseMapMaterial { diffuse: "assets/chest/diffuse.webp" specular: Qt.rgba( 0.2, 0.2, 0.2, 1.0 ) shininess: 2.0 ambient: color textureScale: 1.0 } 漫反射高光贴图材质（漫反射和高光均有贴图提供） DiffuseSpecularMapMaterial{ diffuse: "assets/chest/diffuse.webp" specular: "assets/chest/specular.webp" shininess: 2.0 ambient: color textureScale: 1.0 } 凹凸贴图材质（用贴图来模拟细节，减小建模复杂度） 法线漫反射贴图材质（实现了phong光照和凹凸贴图模型） NormalDiffuseMapMaterial { ambient: Qt.rgba( 0.05, 0.05, 0.05, 1.0 ) shininess: 5.0 textureScale: 1.0 diffuse: "assets/houseplants/pot.webp" normal: "assets/houseplants/pot_normal.webp" specular: Qt.rgba( 0.75, 0.75, 0.75, 1.0 ) } 法线漫反射贴图质（和前一个的区别？） NormalDiffuseMapAlphaMaterial { ambient: Qt.rgba( 0.05, 0.05, 0.05, 1.0 ) shininess: 1.0 textureScale: 1.0 diffuse: "qrc:/images/songtitle.png" normal: "qrc:/images/normalmap.png" specular: color } 法线漫反射高光贴图材质（高光可以指定贴图） NormalDiffuseSpecularMapMaterial { ambient: Qt.rgba( 0.05, 0.05, 0.05, 1.0 ) shininess: 10.0 textureScale: 10.0 diffuse: "assets/textures/pattern_09/diffuse.webp" normal: "assets/textures/pattern_09/normal.webp" specular: "assets/textures/pattern_09/specular.webp" } 自定义材质（使用Shader技术实现） 示例1 Material { id: instancedPhongMaterial effect: Effect { techniques: Technique { graphicsApiFilter { api: GraphicsApiFilter.OpenGL profile: GraphicsApiFilter.CoreProfile minorVersion: 2 majorVersion: 3 } filterKeys: FilterKey { name: "renderingStyle"; value: "forward" } renderPasses: RenderPass { shaderProgram: ShaderProgram { vertexShaderCode: loadSource("qrc:/instanced.vert") fragmentShaderCode: loadSource("qrc:/instanced.frag") } } } } } 线框材质 请查看官方示例“Wireframe qml example” WireframeMaterial { id: wireframeMaterial effect: WireframeEffect {} ambient: Qt.rgba( 0.2, 0.0, 0.0, 1.0 ) diffuse: Qt.rgba( 0.8, 0.0, 0.0, 1.0 ) } 详见官方示例：Planets qml example Texture2D { id: diffuseTexture minificationFilter: Texture.LinearMipMapLinear magnificationFilter: Texture.Linear wrapMode { x: WrapMode.Repeat y: WrapMode.Repeat } generateMipMaps: true maximumAnisotropy: 16.0 TextureImage {source: "qrc:/texturePalette.png"} } ---------------------------------------------- Layer(QLayer>) 类似ps中的图层，可在程序中控制某些图层显示隐藏 ---------------------------------------------- import Qt3D.Core 2.0 import Qt3D.Render 2.0 Entity { id: root components: RenderSettings { Viewport { ClearBuffers { buffers: ClearBuffers.ColorDepthBuffer CameraSelector { camera: mainCamera LayerFilter {layers: [layer1]} } } } } Camera { id: mainCamera } // scene Entity { id: renderableEntity components: [ mesh, layer1 ] } Layer { id: layer1 } GeometryRenderer { id: mesh } } ---------------------------------------------- TechniqueFilter e ---------------------------------------------- import Qt3D.Core 2.0 import Qt3D.Render 2.0 TechniqueFilter { property alias camera: cameraSelector.camera property alias window: surfaceSelector.surface id: root objectName : "techniqueFilter" matchAll: [ FilterKey { name: "renderingStyle"; value: "forward" } ] // Select the forward rendering Technique of any used Effect RenderSurfaceSelector { id: surfaceSelector Viewport { id: viewport objectName : "viewport" normalizedRect: Qt.rect(0.0, 0.0, 1.0, 1.0) CameraSelector { id : cameraSelector objectName : "cameraSelector" ClearBuffers { buffers : ClearBuffers.ColorDepthBuffer clearColor: "black" SortPolicy { sortTypes: [ SortPolicy.StateChangeCost, SortPolicy.Material ] } } } } } } ---------------------------------------------- AspectEngine ---------------------------------------------- 3d模拟是AspectEngine来执行等 AbstractAspect Behavior 处理组件数据 RenderAspect InputAspect LoginAspect ---------------------------------------------- FrameGraph & ViewPort & Layer 描述了后期处理逻辑，如：阴影／透明／后期处理／多视图/选择渲染 import Qt3D.Core 2.0 import Qt3D.Render 2.0 ---------------------------------------------- 默认的RenderSetting Entity { Camera { id:camera ... } FirstPersonCameraController {camera:camera} components: [ RenderSetting{ activeFrameGraph : ForwardRenderer {camera:camera, clearColor:"transparent"}, InputSetting{} } ] ... } 自定义RenderSetting（多视图） RenderSettings { id: quadViewportFrameGraph property alias topLeftCamera: cameraSelectorTopLeftViewport.camera; property alias topRightCamera: cameraSelectorTopRightViewport.camera; property alias bottomLeftCamera: cameraSelectorBottomLeftViewport.camera; property alias bottomRightCamera: cameraSelectorBottomRightViewport.camera; property alias window: surfaceSelector.surface activeFrameGraph: RenderSurfaceSelector { id: surfaceSelector Viewport { id: mainViewport normalizedRect: Qt.rect(0, 0, 1, 1) ClearBuffers { buffers: ClearBuffers.ColorDepthBuffer } Viewport { id: topLeftViewport normalizedRect: Qt.rect(0, 0, 0.5, 0.5) CameraSelector { id: cameraSelectorTopLeftViewport } } Viewport { id: topRightViewport normalizedRect: Qt.rect(0.5, 0, 0.5, 0.5) CameraSelector { id: cameraSelectorTopRightViewport } } Viewport { id: bottomLeftViewport normalizedRect: Qt.rect(0, 0.5, 0.5, 0.5) CameraSelector { id: cameraSelectorBottomLeftViewport } } Viewport { id: bottomRightViewport normalizedRect: Qt.rect(0.5, 0.5, 0.5, 0.5) CameraSelector { id: cameraSelectorBottomRightViewport } } } } } 选择图层渲染 RenderSurfaceSelector{ RenderTargetSelector{ target: sceneTarget CameraSelector{ camera: mainCamera ClearBuffer { buffers: ClearBuffers.ColorDepthBuffer clearColor: "white" NoDraw{} } LayerFilter{ layers: [objectsLayer] RenderPassFilter{ matchAny: FilterKey{name: "renderPass"; value: "allObjects"} } } LayerFilter{ layers: [enviromentLayer] } } } } ---------------------------------------------- CustomMaterial & Effect ---------------------------------------------- import Qt3D.Core 2.0 import Qt3D.Render 2.0 Material { // 定义材质的参数 id: root property color ambient: Qt.rgba( 0.05, 0.05, 0.05, 1.0 ) property color diffuse: Qt.rgba( 0.7, 0.7, 0.7, 1.0 ) property color specular: Qt.rgba( 0.95, 0.95, 0.95, 1.0 ) property real shininess: 150.0 property real lineWidth: 0.8 property color lineColor: Qt.rgba( 0.0, 0.0, 0.0, 1.0 ) parameters: [ Parameter { name: "ka"; value: Qt.vector3d(root.ambient.r, root.ambient.g, root.ambient.b) }, Parameter { name: "kd"; value: Qt.vector3d(root.diffuse.r, root.diffuse.g, root.diffuse.b) }, Parameter { name: "ks"; value: Qt.vector3d(root.specular.r, root.specular.g, root.specular.b) }, Parameter { name: "shininess"; value: root.shininess }, Parameter { name: "line.width"; value: root.lineWidth }, Parameter { name: "line.color"; value: root.lineColor } ] // 具体的效果实现逻辑（使用Shader实现） effect: Effect { parameters: [ Parameter { name: "ka"; value: Qt.vector3d( 0.1, 0.1, 0.1 ) }, Parameter { name: "kd"; value: Qt.vector3d( 0.7, 0.7, 0.7 ) }, Parameter { name: "ks"; value: Qt.vector3d( 0.95, 0.95, 0.95 ) }, Parameter { name: "shininess"; value: 150.0 } ] techniques: [ Technique { graphicsApiFilter { api: GraphicsApiFilter.OpenGL profile: GraphicsApiFilter.CoreProfile majorVersion: 3 minorVersion: 1 } filterKeys: [ FilterKey { name: "renderingStyle"; value: "forward" } ] parameters: [ Parameter { name: "light.position"; value: Qt.vector4d( 0.0, 0.0, 0.0, 1.0 ) }, Parameter { name: "light.intensity"; value: Qt.vector3d( 1.0, 1.0, 1.0 ) }, Parameter { name: "line.width"; value: 1.0 }, Parameter { name: "line.color"; value: Qt.vector4d( 1.0, 1.0, 1.0, 1.0 ) } ] // 渲染通道 renderPasses: [ RenderPass { shaderProgram: ShaderProgram { vertexShaderCode: loadSource("qrc:/Materials/Shaders/robustwireframe.vert") geometryShaderCode: loadSource("qrc:/Materials/Shaders/robustwireframe.geom") fragmentShaderCode: loadSource("qrc:/Materials/Shaders/robustwireframe.frag") } } ] } ] } } shader 详见Qt3D.Shader章节 ---------------------------------------------- ObjectPicker & animation(5.9) https://www.kdab.com/qt-3d-animation-easter-teaser/ ClipAnimator 5.9 提供。可加载设计好的动画 ---------------------------------------------- Entity { id: cube components: [ Transform { id: cubeTransform }, Mesh { source: "qrc:/assets/egg/egg.obj" }, TexturedMetalRoughMaterial { baseColor: TextureLoader { format: Texture.SRGB8_Alpha8 source: "qrc:/assets/egg/basecolor.png" } metalness: TextureLoader { source: "qrc:/assets/egg/metalness.png" } roughness: TextureLoader { source: "qrc:/assets/egg/roughness.png" } normal: TextureLoader { source: "qrc:/assets/egg/normal.png" } ambientOcclusion: TextureLoader { source: "qrc:/assets/egg/ambientocclusion.png" } }, ObjectPicker { onClicked: animator.running = true }, ClipAnimator { id: animator loops: 3 clip: AnimationClipLoader { source: "qrc:/jumpinganimation.json" } channelMapper: ChannelMapper { mappings: [ ChannelMapping { channelName: "Location"; target: cubeTransform; property: "translation" }, ChannelMapping { channelName: "Rotation"; target: cubeTransform; property: "rotation" }, ChannelMapping { channelName: "Scale"; target: cubeTransform; property: "scale3D" } ] } } ] } ---------------------------------------------- -- 批量生成对象 ---------------------------------------------- NodeInstantiator { id: collection property int maxCount: parent.numberOfBars model: maxCount delegate: BarEntity { id: cubicEntity entityMesh: CuboidMesh {xExtent: 0.1; yExtent: 0.1; zExtent: 0.1} rotationTimeMs: sceneRoot.barRotationTimeMs entityIndex: index entityCount: sceneRoot.numberOfBars entityAnimationsState: animationState magnitude: 0 } } NodeInstantiator { id: grid model: rows * columns property int rows: 6 property int columns: 11 Entity { property int _row: index / grid.columns property int _col: index % grid.columns components: [ sphereTransform, sphereMesh, sphereMaterial ] SphereMesh { id: sphereMesh slices: 60 rings: 60 radius: 0.65 } Transform { id: sphereTransform translation: Qt.vector3d(-7.5 + _col * 1.5, -4.0 + _row * 1.5, 0) } MetalRoughMaterial { id: sphereMaterial baseColor: scene.baseColor metalness: 0.2 * _row roughness: 0.1 * _col } } } ---------------------------------------------- -- 杂 ---------------------------------------------- KeyboardInput 可响应键盘消息 LogicComponent 可设置逻辑。如物体位置／精灵创建／离屏销毁等。 FrameGraph 如何渲染场景 CameraSelector NoDraw Viewport { CameraSelector { ClearBuffers { buffers: ClearBuffers.ColorDepthBuffer NoDraw { } // Prevents from drawing anything } RenderPassFilter { ... } RenderPassFilter { ... } } } ClearBuffers ClearBuffers { buffers: ClearBuffers.DepthBuffer CameraSelector { id: lightCameraSelector } } -------------------------------------------------- 三维旋转控制 -------------------------------------------------- // 旋转 Transform { id: modelTransform property real angle: 0 matrix: { var m = cameraMatrix.inverted(); m.translate(Qt.vector3d(6, -4 - (1.0 - showDetailsTransitionState) * 10, -20 * showDetailsTransitionState)); m.rotate(modelTransform.angle, Qt.vector3d(0, 1, 0)); // 动画绕y轴旋转360度 m.rotate(15, Qt.vector3d(0, 0, 1)); // 沿z轴倾斜15度 return m; } } // Transform { id: cameraRotationTransform matrix: { var m = Qt.matrix4x4(); m.rotate(-19 * window.carouselOffset, Qt.vector3d(0.0, 1.0, 0.0)); m.rotate(5 * mainCamera.roll, Qt.vector3d(0.0, 0.0, 1.0)); m.lookAt(Qt.vector3d( 0.0, 0.0, 0.0 ), Qt.vector3d(-40 * Math.sin(mainCamera.yaw), mainCamera.roll * 3, -40 * Math.cos(mainCamera.yaw) ), Qt.vector3d( 0.0, 1.0, 0.0 )); return m; } } Transform { id: modelTransform matrix: { var m = cameraMatrix.inverted(); m.translate(Qt.vector3d(0.0, -1.5 + (1.5 * showDetailsTransitionState), -40)); m.rotate(40 * Math.min(1.0, showDetailsTransitionState * 1.5), Qt.vector3d(0, 1, 0)); m.translate(Qt.vector3d(-25 * Math.max(0, showDetailsTransitionState - 0.4), 0.0, 0.0)); return m; } } -------------------------------------------------- 贴图位置的控制 -------------------------------------------------- import Qt3D.Core 2.0 import Qt3D.Render 2.0 Texture2D { property alias source: image.source minificationFilter: Texture.LinearMipMapLinear magnificationFilter: Texture.Linear generateMipMaps: true wrapMode { x: WrapMode.ClampToEdge y: WrapMode.ClampToEdge } TextureImage { id: image } }
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