1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick3D
Item {
id: root
required property Node origin
required property Camera camera
property real xSpeed: 0.05
property real ySpeed: 0.05
property bool xInvert: false
property bool yInvert: false
property bool mouseEnabled: true
property bool panEnabled: true
readonly property bool inputsNeedProcessing: status.useMouse || status.isPanning
readonly property real minimumZoom: 30
readonly property real maximumZoom: 200
readonly property real minimumTilt: 0
readonly property real maximumTilt: 80
implicitWidth: parent.width
implicitHeight: parent.height
Connections {
target: camera
Component.onCompleted: {
onZChanged()
}
function onZChanged() {
// Adjust near/far values based on distance
let distance = camera.z
if (distance < 1) {
camera.clipNear = 0.01
camera.clipFar = 100
} else if (distance < 100) {
camera.clipNear = 0.1
camera.clipFar = 1000
} else {
camera.clipNear = 1
camera.clipFar = 10000
}
}
}
DragHandler {
id: dragHandler
target: null
enabled: mouseEnabled
acceptedModifiers: Qt.NoModifier
acceptedButtons: Qt.RightButton
onCentroidChanged: {
mouseMoved(Qt.vector2d(centroid.position.x, centroid.position.y), false);
}
onActiveChanged: {
if (active)
mousePressed(Qt.vector2d(centroid.position.x, centroid.position.y));
else
mouseReleased(Qt.vector2d(centroid.position.x, centroid.position.y));
}
}
DragHandler {
id: ctrlDragHandler
target: null
enabled: mouseEnabled && panEnabled
//acceptedModifiers: Qt.ControlModifier
onCentroidChanged: {
panEvent(Qt.vector2d(centroid.position.x, centroid.position.y));
}
onActiveChanged: {
if (active)
startPan(Qt.vector2d(centroid.position.x, centroid.position.y));
else
endPan();
}
}
PinchHandler {
id: pinchHandler
target: null
enabled: mouseEnabled
property real distance: 0.0
onCentroidChanged: {
panEvent(Qt.vector2d(centroid.position.x, centroid.position.y))
}
onActiveChanged: {
if (active) {
startPan(Qt.vector2d(centroid.position.x, centroid.position.y))
distance = root.camera.z
} else {
endPan()
distance = 0.0
}
}
onScaleChanged: {
camera.z = distance * (1 / scale)
camera.z = Math.min(Math.max(camera.z, minimumZoom), maximumZoom)
}
}
TapHandler {
onTapped: root.forceActiveFocus()
}
WheelHandler {
id: wheelHandler
orientation: Qt.Vertical
target: null
enabled: mouseEnabled
onWheel: event => {
let delta = -event.angleDelta.y * 0.01;
camera.z += camera.z * 0.1 * delta
camera.z = Math.min(Math.max(camera.z, minimumZoom), maximumZoom)
}
}
function mousePressed(newPos) {
root.forceActiveFocus()
status.currentPos = newPos
status.lastPos = newPos
status.useMouse = true;
}
function mouseReleased(newPos) {
status.useMouse = false;
}
function mouseMoved(newPos: vector2d) {
status.currentPos = newPos;
}
function startPan(pos: vector2d) {
status.isPanning = true;
status.currentPanPos = pos;
status.lastPanPos = pos;
}
function endPan() {
status.isPanning = false;
}
function panEvent(newPos: vector2d) {
status.currentPanPos = newPos;
}
FrameAnimation {
id: updateTimer
running: root.inputsNeedProcessing
onTriggered: status.processInput(frameTime * 100)
}
QtObject {
id: status
property bool useMouse: false
property bool isPanning: false
property vector2d lastPos: Qt.vector2d(0, 0)
property vector2d lastPanPos: Qt.vector2d(0, 0)
property vector2d currentPos: Qt.vector2d(0, 0)
property vector2d currentPanPos: Qt.vector2d(0, 0)
property real rotateAlongZ: 0
property real rotateAlongXY: 50.0
function processInput(frameDelta) {
if (useMouse) {
// Get the delta
var delta = Qt.vector2d(lastPos.x - currentPos.x,
lastPos.y - currentPos.y);
var rotateX = delta.x * xSpeed * frameDelta
if ( xInvert )
rotateX = -rotateX
rotateAlongZ += rotateX;
let rotateAlongZRad = rotateAlongZ * (Math.PI / 180.)
origin.rotate(rotateX, Qt.vector3d(0.0, 0.0, -1.0), Node.SceneSpace)
var rotateY = delta.y * -ySpeed * frameDelta
if ( yInvert )
rotateY = -rotateY;
let preRotateAlongXY = rotateAlongXY + rotateY
if ( preRotateAlongXY <= maximumTilt && preRotateAlongXY >= minimumTilt )
{
rotateAlongXY = preRotateAlongXY
origin.rotate(rotateY, Qt.vector3d(Math.cos(rotateAlongZRad), Math.sin(-rotateAlongZRad), 0.0), Node.SceneSpace)
}
lastPos = currentPos;
}
if (isPanning) {
let delta = currentPanPos.minus(lastPanPos);
delta.x = -delta.x
delta.x = (delta.x / root.width) * camera.z * frameDelta
delta.y = (delta.y / root.height) * camera.z * frameDelta
let velocity = Qt.vector3d(0, 0, 0)
// X Movement
let xDirection = origin.right
velocity = velocity.plus(Qt.vector3d(xDirection.x * delta.x,
xDirection.y * delta.x,
xDirection.z * delta.x));
// Z Movement
let zDirection = origin.right.crossProduct(Qt.vector3d(0.0, 0.0, -1.0))
velocity = velocity.plus(Qt.vector3d(zDirection.x * delta.y,
zDirection.y * delta.y,
zDirection.z * delta.y));
origin.position = origin.position.plus(velocity)
lastPanPos = currentPanPos
}
}
}
}
|
