QtQuick3D-例子-modelview3d
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代码：
modelview3d.qml
import QtQuick 1.0import Qt3D 1.0import Qt3D.Shapes 1.0Rectangle { id: topLevel width: 800; height: 480 //数据模型 ListModel { id: dynamicModel ListElement { x:0; y:0; z:0; color:"#ffffff"} } function addItem() { var newModelData = { "x": navigator.currentX/5, "y": navigator.currentY/5, "z": navigator.currentZ/5, "color": colorPicker.currentColor } dynamicModel.append( newModelData ); viewport.update3d(); } //立方体元素组件 Component { id: cubeDelegate Cube { id: item x: model.x;y: model.y; z: model.z; effect: Effect { id: itemEffect color: model.color blending: true } scale: 1 / 5 enabled: index != -1 // You can have your own functions, signals, animations etc. onClicked: { onClicked: console.log("Cube("+index+") color: " + itemEffect.color); removeAnimation.start(); } SequentialAnimation { id: removeAnimation ColorAnimation { target: itemEffect; property: "color" ;from: model.color; to: Qt.rgba(0,0,0,0); duration: 500 } ScriptAction { script: { dynamicModel.remove(index); viewport.update3d(); } } } Component.onCompleted: { console.log("Cube Completed"); } } } //--cubeDelegate end //三维视图 Viewport { id: viewport picking: true blending: true Repeater { delegate: cubeDelegate model: dynamicModel } anchors.left: controlPanel.right anchors.right: parent.right anchors.top: parent.top anchors.bottom: parent.bottom camera: Camera { id: main_camera eye: Qt.vector3d(0, 4, 12) } } //颜色框 导航按钮以及说明 Rectangle { id: controlPanel color: "#ffffff" width: 210 anchors.top: parent.top anchors.bottom: parent.bottom anchors.left: parent.left Rectangle { id: colorPicker color: "white" height: sliderContainter.height + titleText.height + 5 anchors.margins: 5 anchors.left: parent.left anchors.right: parent.right anchors.top: parent.top Text { id: titleText text: qsTr("Color Picker") font.bold: true anchors.top: parent.top anchors.left:parent.left anchors.margins: 5 } property color currentColor: "white" property real currentRed: 1.0 property real currentGreen: 1.0 property real currentBlue: 1.0 property real currentAlpha: 1.0 // We use Qt.rgba() to build the colour, which breaks the bindings, // so we update manually when the color components change. //和上面的属性绑定，当改变时自动调用 onCurrentRedChanged: updateColor(); onCurrentGreenChanged: updateColor(); onCurrentBlueChanged: updateColor(); onCurrentAlphaChanged: updateColor(); function updateColor() { currentColor = Qt.rgba( colorPicker.currentRed, colorPicker.currentGreen, colorPicker.currentBlue, colorPicker.currentAlpha); redSlider.updateColors(); greenSlider.updateColors(); blueSlider.updateColors(); swatch.color = currentColor; } Rectangle { id: swatch anchors.margins: 5 height: 90 y: 5 border.width: 2 border.color: "black" color: Qt.rgba(colorPicker.currentRed, colorPicker.currentGreen, colorPicker.currentBlue, colorPicker.currentAlpha); anchors.top: parent.top anchors.bottom: parent.bottom anchors.right: parent.right anchors.left: sliderContainter.right } Rectangle { id: sliderContainter anchors.bottom: parent.bottom width: 125 height: 110 Rectangle { id: redSlider property real currentValue: 1.0 rotation: -90 x: 30 y: -20 height: 80 width: 30 border.width: 2 border.color: "black" radius: 5 property color zeroColor: Qt.rgba(0, colorPicker.currentGreen, colorPicker.currentBlue, colorPicker.currentAlpha) property color fullColor: Qt.rgba(1.0, colorPicker.currentGreen, colorPicker.currentBlue, colorPicker.currentAlpha) function updateColors() { zeroColor = Qt.rgba(0, colorPicker.currentGreen, colorPicker.currentBlue, colorPicker.currentAlpha); fullColor = Qt.rgba(1.0, colorPicker.currentGreen, colorPicker.currentBlue, colorPicker.currentAlpha); } //定义一个颜色梯度 gradient: Gradient { GradientStop { position: 0.0 color: redSlider.zeroColor} GradientStop { position: 1.0 color: redSlider.fullColor } } MouseArea { anchors.fill: parent onMousePositionChanged: { redSlider.currentValue = mouseY / redSlider.height; colorPicker.currentRed = redSlider.currentValue; } } } Rectangle { id: redSwatch width: redSlider.width height: redSlider.width color: Qt.rgba(1.0, 0, 0); border.width: 2 border.color: "black" x: redSlider.height + 10 y: 5 radius: 5 MouseArea { anchors.fill: parent onClicked: {colorPicker.currentRed = 1.0; colorPicker.currentGreen = 0; colorPicker.currentBlue = 0} } } Rectangle { id: greenSlider rotation: -90 x: 30 y: 15 height: 80 width: 30 property color zeroColor: Qt.rgba(colorPicker.currentRed, 0.0, colorPicker.currentBlue, colorPicker.currentAlpha) property color fullColor: Qt.rgba(colorPicker.currentRed, 1.0, colorPicker.currentBlue, colorPicker.currentAlpha) function updateColors() { zeroColor = Qt.rgba(colorPicker.currentRed, 0.0, colorPicker.currentBlue, colorPicker.currentAlpha); fullColor = Qt.rgba(colorPicker.currentRed, 1.0, colorPicker.currentBlue, colorPicker.currentAlpha); } gradient: Gradient { GradientStop { position: 0.0 color: greenSlider.zeroColor } GradientStop { position: 1.0 color: greenSlider.fullColor } } border.width: 2 border.color: "black" radius: 5 MouseArea { anchors.fill: parent onMousePositionChanged: { colorPicker.currentGreen = mouseY / greenSlider.height; } } } Rectangle { id: greenSwatch width: greenSlider.width height: greenSlider.width color: Qt.rgba(0, 1, 0); border.width: 2 border.color: "black" x: greenSlider.height + 10 y: 40 radius: 5 MouseArea { anchors.fill: parent onClicked: { colorPicker.currentRed = 0; colorPicker.currentGreen = 1; colorPicker.currentBlue = 0 } } } Rectangle { id: blueSlider rotation: -90 x: 30 y: 50 height: 80 width: 30 property color zeroColor: Qt.rgba(colorPicker.currentRed, colorPicker.currentGreen, 0.0, colorPicker.currentAlpha) property color fullColor: Qt.rgba(colorPicker.currentRed, colorPicker.currentGreen, 1.0, colorPicker.currentAlpha) function updateColors() { zeroColor = Qt.rgba(colorPicker.currentRed, colorPicker.currentGreen, 0.0, colorPicker.currentAlpha); fullColor = Qt.rgba(colorPicker.currentRed, colorPicker.currentGreen, 1.0, colorPicker.currentAlpha); } gradient: Gradient { GradientStop { position: 0.0 color: blueSlider.zeroColor } GradientStop { position: 1.0 color: blueSlider.fullColor } } border.width: 2 border.color: "black" radius: 5 MouseArea { anchors.fill: parent onClicked: { colorPicker.currentBlue = mouseY / blueSlider.height; } onMousePositionChanged: { colorPicker.currentBlue = mouseY / blueSlider.height; } } } Rectangle { id: blueSwatch width: blueSlider.width height: blueSlider.width color: Qt.rgba(0, 0, 1); border.width: 2 border.color: "black" x: blueSlider.height + 10 y: 75 radius: 5 MouseArea { anchors.fill: parent onClicked: { colorPicker.currentRed = 0; colorPicker.currentGreen = 0; colorPicker.currentBlue = 1 } } } } } //导航 Rectangle { id: navigator height: 200 anchors.margins: 5 anchors.top: colorPicker.bottom anchors.left: parent.left anchors.right: parent.right // These properties contain are used by the modelview to populate // new elements property int currentX:0; property int currentY:0; property int currentZ:0; property int buttonWidth: 45 property int buttonHeight: 30 Button { width: navigator.buttonWidth height: navigator.buttonHeight anchors.horizontalCenter: parent.horizontalCenter anchors.top: parent.top text: qsTr("Up") onClicked: { navigator.currentY += 1; topLevel.addItem(); } } Button { width: navigator.buttonWidth height: navigator.buttonHeight anchors.horizontalCenter: parent.horizontalCenter anchors.bottom: parent.bottom text: qsTr("Down") onClicked: { navigator.currentY -= 1; topLevel.addItem(); } } Button { width: navigator.buttonWidth height: navigator.buttonHeight anchors.left: parent.left anchors.verticalCenter: parent.verticalCenter text: qsTr("Left") onClicked: { navigator.currentX -= 1; topLevel.addItem(); } } Button { width: navigator.buttonWidth height: navigator.buttonHeight anchors.right: parent.right anchors.verticalCenter: parent.verticalCenter text: qsTr("Right") onClicked: { navigator.currentX += 1; topLevel.addItem(); } } Button { width: navigator.buttonWidth height: navigator.buttonHeight anchors.right: parent.right anchors.top: parent.top text: qsTr("In") onClicked: { navigator.currentZ -= 1; topLevel.addItem(); } } Button { width: navigator.buttonWidth height: navigator.buttonHeight anchors.left: parent.left anchors.bottom: parent.bottom text: qsTr("Out") onClicked: { navigator.currentZ += 1; topLevel.addItem(); } } Image { id: axesImage anchors.centerIn: parent source: "axes.png" property color buttonColor: "#448888" } } //说明文字 Rectangle { id: instructions anchors.margins: 5 anchors.top: navigator.bottom anchors.left: parent.left anchors.bottom: parent.bottom anchors.right: navigator.right Text { anchors.fill: parent id: instructionsText wrapMode: Text.WordWrap text: qsTr("Use this navigator to create new boxes and move around" + " 3d space.\n" + "Use the color picker to change the color of " + "generated cubes." // + "\n Click on cubes to remove them from the scene." ) } } }}
Button.qml
import QtQuick 1.0Rectangle { id: button color: mouseArea.pressed ? "#000000" : "#ffffff" border.width: 1 anchors.margins: 5 radius: 5 property alias text : text.text //页面显示的文字 signal clicked; //单击信号 Text { id: text color: mouseArea.pressed ? "#ffffff" : "#000000"; anchors.centerIn: parent text: qsTr("A Button") } MouseArea { id: mouseArea anchors.fill: parent onClicked: button.clicked() }}
操作：
点击当方向按钮时动态向模式中添加立方体元素，
点击模式中立方体元素时，删除
问题：
1.属性绑定
propertyrealcurrentRed: 1.0
和currentRed属性自动绑定，当值改变自动调用下面的函数
onCurrentRedChanged:updateColor();
2. 通过Repeater动态向Viewport中添加三维元素
Button.qmlButton.qmlButton.qml
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