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<h1 class="title">main.qml Example File</h1>
<span class="subtitle">qmlaxisdrag/qml/qmlaxisdrag/main.qml</span>
<!-- $$$qmlaxisdrag/qml/qmlaxisdrag/main.qml-description -->
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<pre class="qml">
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Data Visualization module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.1
import QtDataVisualization 1.1
import "."
Item {
id: mainView
width: 800
height: 600
visible: true
property int selectedAxisLabel: -1
property real dragSpeedModifier: 100.0
property int currentMouseX: -1
property int currentMouseY: -1
property int previousMouseX: -1
property int previousMouseY: -1
ListModel {
id: graphModel
ListElement{ xPos: 0.0; yPos: 0.0; zPos: 0.0; rotation: "@0,0,0,0" }
ListElement{ xPos: 1.0; yPos: 1.0; zPos: 1.0; rotation: "@45,1,1,1" }
}
Timer {
id: dataTimer
interval: 1
running: true
repeat: true
property bool isIncreasing: true
property real rotationAngle: 0
function generateQuaternion() {
return "@" + Math.random() * 360 + "," + Math.random() + ","
+ Math.random() + "," + Math.random()
}
function appendRow() {
graphModel.append({"xPos": Math.random(),
"yPos": Math.random(),
"zPos": Math.random(),
"rotation": generateQuaternion()
});
}
onTriggered: {
rotationAngle = rotationAngle + 1
qtCube.setRotationAxisAndAngle(Qt.vector3d(1,0,1), rotationAngle)
scatterSeries.setMeshAxisAndAngle(Qt.vector3d(1,1,1), rotationAngle)
if (isIncreasing) {
for (var i = 0; i < 10; i++)
appendRow()
if (graphModel.count > 2002) {
scatterGraph.theme = isabelleTheme
isIncreasing = false
}
} else {
graphModel.remove(2, 10);
if (graphModel.count == 2) {
scatterGraph.theme = dynamicColorTheme
isIncreasing = true
}
}
}
}
ThemeColor {
id: dynamicColor
ColorAnimation on color {
from: "red"
to: "yellow"
duration: 2000
loops: Animation.Infinite
}
}
Theme3D {
id: dynamicColorTheme
type: Theme3D.ThemeEbony
baseColors: [dynamicColor]
font.pointSize: 50
labelBorderEnabled: true
labelBackgroundColor: "gold"
labelTextColor: "black"
}
Theme3D {
id: isabelleTheme
type: Theme3D.ThemeIsabelle
font.pointSize: 50
labelBorderEnabled: true
labelBackgroundColor: "gold"
labelTextColor: "black"
}
Item {
id: dataView
anchors.bottom: parent.bottom
width: parent.width
height: parent.height
Scatter3D {
id: scatterGraph
inputHandler: null
width: dataView.width
height: dataView.height
theme: dynamicColorTheme
shadowQuality: AbstractGraph3D.ShadowQualityLow
scene.activeCamera.yRotation: 45.0
scene.activeCamera.xRotation: 45.0
scene.activeCamera.zoomLevel: 75.0
Scatter3DSeries {
id: scatterSeries
itemLabelFormat: "X:@xLabel Y:@yLabel Z:@zLabel"
mesh: Abstract3DSeries.MeshCube
ItemModelScatterDataProxy {
itemModel: graphModel
xPosRole: "xPos"
yPosRole: "yPos"
zPosRole: "zPos"
rotationRole: "rotation"
}
}
customItemList: [
Custom3DItem {
id: qtCube
meshFile: ":/mesh/cube"
textureFile: ":/texture/texture"
position: Qt.vector3d(0.65,0.35,0.65)
scaling: Qt.vector3d(0.3,0.3,0.3)
}
]
onSelectedElementChanged: {
if (selectedElement >= AbstractGraph3D.ElementAxisXLabel
&& selectedElement <= AbstractGraph3D.ElementAxisZLabel)
selectedAxisLabel = selectedElement
else
selectedAxisLabel = -1
}
}
MouseArea {
anchors.fill: parent
hoverEnabled: true
acceptedButtons: Qt.LeftButton
onPositionChanged: {
currentMouseX = mouse.x;
currentMouseY = mouse.y;
if (pressed && selectedAxisLabel != -1)
dragAxis();
previousMouseX = currentMouseX;
previousMouseY = currentMouseY;
}
onPressed: {
scatterGraph.scene.selectionQueryPosition = Qt.point(mouse.x, mouse.y);
}
onReleased: {
// We need to clear mouse positions and selected axis, because touch devices cannot
// track position all the time
selectedAxisLabel = -1
currentMouseX = -1
currentMouseY = -1
previousMouseX = -1
previousMouseY = -1
}
}
}
function dragAxis() {
// Do nothing if previous mouse position is uninitialized
if (previousMouseX === -1)
return
// Directional drag multipliers based on rotation. Camera is locked to 45 degrees, so we
// can use one precalculated value instead of calculating xx, xy, zx and zy individually
var cameraMultiplier = 0.70710678
// Calculate the mouse move amount
var moveX = currentMouseX - previousMouseX
var moveY = currentMouseY - previousMouseY
// Adjust axes
switch (selectedAxisLabel) {
case AbstractGraph3D.ElementAxisXLabel:
var distance = ((moveX - moveY) * cameraMultiplier) / dragSpeedModifier
// Check if we need to change min or max first to avoid invalid ranges
if (distance > 0) {
scatterGraph.axisX.min -= distance
scatterGraph.axisX.max -= distance
} else {
scatterGraph.axisX.max -= distance
scatterGraph.axisX.min -= distance
}
break
case AbstractGraph3D.ElementAxisYLabel:
distance = moveY / dragSpeedModifier
// Check if we need to change min or max first to avoid invalid ranges
if (distance > 0) {
scatterGraph.axisY.max += distance
scatterGraph.axisY.min += distance
} else {
scatterGraph.axisY.min += distance
scatterGraph.axisY.max += distance
}
break
case AbstractGraph3D.ElementAxisZLabel:
distance = ((moveX + moveY) * cameraMultiplier) / dragSpeedModifier
// Check if we need to change min or max first to avoid invalid ranges
if (distance > 0) {
scatterGraph.axisZ.max += distance
scatterGraph.axisZ.min += distance
} else {
scatterGraph.axisZ.min += distance
scatterGraph.axisZ.max += distance
}
break
}
}
NewButton {
id: rangeToggle
width: parent.width / 3 // We're adding 3 buttons and want to divide them equally
text: "Use Preset Range"
anchors.left: parent.left
property bool autoRange: true
onClicked: {
if (autoRange) {
text = "Use Automatic Range"
scatterGraph.axisX.min = 0.3
scatterGraph.axisX.max = 0.7
scatterGraph.axisY.min = 0.3
scatterGraph.axisY.max = 0.7
scatterGraph.axisZ.min = 0.3
scatterGraph.axisZ.max = 0.7
autoRange = false
dragSpeedModifier = 200.0
} else {
text = "Use Preset Range"
autoRange = true
dragSpeedModifier = 100.0
}
scatterGraph.axisX.autoAdjustRange = autoRange
scatterGraph.axisY.autoAdjustRange = autoRange
scatterGraph.axisZ.autoAdjustRange = autoRange
}
}
NewButton {
id: orthoToggle
width: parent.width / 3
text: "Display Orthographic"
anchors.left: rangeToggle.right
onClicked: {
if (scatterGraph.orthoProjection) {
text = "Display Orthographic";
scatterGraph.orthoProjection = false
// Orthographic projection disables shadows, so we need to switch them back on
scatterGraph.shadowQuality = AbstractGraph3D.ShadowQualityLow
} else {
text = "Display Perspective";
scatterGraph.orthoProjection = true
}
}
}
NewButton {
id: exitButton
width: parent.width / 3
text: "Quit"
anchors.left: orthoToggle.right
onClicked: Qt.quit(0);
}
}
</pre>
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