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
235
236
237
238
239
240
241
242
243
244
245
|
/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Design Studio documentation.
**
** 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 Free Documentation License Usage
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of
** this file. Please review the following information to ensure
** the GNU Free Documentation License version 1.3 requirements
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
**
****************************************************************************/
/*!
\page animation-tutorial.html
\ingroup gstutorials
\sa {Creating Timeline Animations}
\title Timeline Animation Tutorial
\brief Illustrates how to create timeline animations and bind them to
properties in \QDS.
\image animation-tutorial.gif
The \e{Timeline Animation} tutorial illustrates how to create timeline animations
and bind them to properties in \QDS. First you create a keyframe animation
which you control the running state of with a switch in the UI. Next, you
create another keyframe animation where you use a slider in the UI to
control the position of the playhead.
The starting point of this tutorial is the Animation Tutorial project,
you can download it from
\l{https://git.qt.io/public-demos/qtdesign-studio/-/tree/master/tutorial%20projects/animation-tutorial/AnimationTutorial/Start}
{here}.
You can download the completed project from
\l{https://git.qt.io/public-demos/qtdesign-studio/-/tree/master/tutorial%20projects/animation-tutorial/AnimationTutorial/Completed}
{here}.
This tutorial requires that you know the basics of \QDS, see
\l{Getting Started}.
\section1 Creating a Timeline Animation
First, you create an animation where the ball bearing continuously rotates
around its Y axis.
\section2 Adding a Timeline and an Animation
To add a timeline to your project:
\list 1
\li In the \uicontrol Timeline view, select
\inlineimage icons/plus.png
.
This creates a timeline and one animation.
\li On the \uicontrol {Animation Settings} tab in the
\uicontrol {Timeline Settings} dialog:
\list
\li Set \uicontrol Duration to 7500.
This sets the duration of the animation in milliseconds.
\li Select \uicontrol {Contiunous}.
This sets the animation to start over again when it reaches the
end.
\endlist
\image animation-tutorial-timeline-1.png
\li Select \uicontrol {Close}.
\endlist
You can see the timeline in the \uicontrol Timeline and
\uicontrol Navigator views.
\section2 Adding Keyframes
Next, you add keyframes to animate the rotation of the ball bearing:
\list 1
\li In the \uicontrol Navigator view, select \e {ballbearing1}.
\li In the \uicontrol Properties view, select
\inlineimage icons/action-icon.png (Actions)
next to \uicontrol Rotation > \uicontrol {Y}.
\li Select \uicontrol {Insert Keyframe}.
\image animation-tutorial-insert-keyframe.png
\li In the \uicontrol Timeline view, select the
\uicontrol {Per Property Recording} button to start recording property
changes.
\image animation-tutorial-per-property-recording.png
\li In the \uicontrol Timeline view, move the playhead to the end of the
animation (frame 1000).
\li In the \uicontrol Properties view, set \uicontrol Rotation >
\uicontrol Z to 360.
This creates a second keyframe.
\li Select the \uicontrol {Per Property Recording} button to end the per
property recording. To preview the animation, drag the playhead along the
timeline.
\endlist
\section2 Controlling the Running State of the Animation
There is a toggle switch in the UI of this project. To use this switch to
control the running state of the animation:
\list 1
\li In the \uicontrol Navigator view, select \e {timelineAnimation}.
\li In the \uicontrol Connections view, go to the \uicontrol Bindings tab.
\li Select \inlineimage icons/plus.png
to create a binding.
\li For the binding you created, set:
\list
\li \uicontrol Property to \e {paused}.
\li \uicontrol {Source Item} to \e {switch1}.
\li \uicontrol {Source Property} to \e {checked}.
\endlist
\image animation-tutorial-binding.png
\endlist
You can preview the animation and try the toggle switch in the live preview.
To run the live preview, select \key Alt + \key{P}.
\section1 Creating a Timeline and Binding it to a Property
Next, you create the exploded view animation of the ball bearing. You don't
want this animation to run automatically but instead you want to control it
with a slider in the UI.
\section2 Adding a Timeline Inside a Component
You create this animation inside the ball bearing component, to do this:
\list 1
\li In the \uicontrol Navigator view, select \e {ballBearing1}.
\li Select \key {F2} to go into the component.
\li In the \uicontrol Timeline view, select
\inlineimage icons/plus.png
to add a timeline and open the \uicontrol {Timeline Settings} dialog.
\li Select \inlineimage icons/minus.png
next to the \uicontrol {Animation Settings} tab to remove the animation
in this timeline.
You do not need an animation when you bind the timeline to a property.
\li Select \uicontrol {Close}.
\endlist
\image animation-tutorial-timeline-2.png
\section2 Adding Keyframes
Now, you add keyframes for the different parts of the ball bearing:
\list 1
\li In the \uicontrol{Navigator} view, select \e{inner_race}.
\li In the \uicontrol Properties view, select
\inlineimage icons/action-icon.png (Actions)
next to \uicontrol Translation > \uicontrol Y.
\li Select \uicontrol {Insert Keyframe}.
\li In the \uicontrol Timeline view, select the
\uicontrol {Per Property Recording} button to start recording property
changes.
\li In the \uicontrol Timeline view, move the playhead to the end of the
animation (frame 1000).
\li In the \uicontrol Properties view, set \uicontrol Translation >
\uicontrol Y to 0,50.
\li Select the \uicontrol {Per Property Recording} button to end the per
property recording.
\li Next, you set the keyframe values for the other parts of the ball
bearing. For the following parts, set the \uicontrol Translation >
\uicontrol Y value for frame 1000:
\list
\li \e balls to 1,00.
\li \e retainer to 1,50.
\li \e shield_left to 1,80.
\li \e shield_right to -0,30.
\endlist
\image animation-tutorial-ballbearing-animation.png
\endlist
You can preview the animation by dragging the playhead in the
\uicontrol Timeline view.
\section2 Controlling the Animation with a Slider
Now, you use the slider on the main screen to control the exploded
view animation that you created.
To do this, you first need to define a property for the slider:
\list 1
\li In the \uicontrol Navigator view, select \e Node.
\li On the \uicontrol Properties tab in the \uicontrol Connections view,
select \inlineimage icons/plus.png
.
\li In the \uicontrol {Property Type} field, enter \e {Item}.
This field is a drop-down list, but you can also type text.
\li In the \uicontrol {Property Value} field, enter \e {null}.
\endlist
\image animation-tutorial-property.png
Next, you set the property you just created to control the timeline
animation:
\list 1
\li In the \uicontrol {Timeline} view, select
\inlineimage icons/animation.png
.
\li In the \uicontrol {Expression binding field}, enter
\c {property0.value}.
\li Select \uicontrol {Close}.
\endlist
Next, you go out from the component back to the main project and bind the
property to the slider:
\list 1
\li In the toolbar, select the \e {Screen01.ui.qml} breadcrumb.
\image animation-tutorial-breadcrumb.png
\li In the \uicontrol {Navigator} view, select \e {ballbearing1}.
\li In the \uicontrol {Connections} view, go to the
\uicontrol {Bindings} tab.
\li Select \inlineimage icons/plus.png
.
\li For the binding you just created:
\list
\li Set \uicontrol {Source Item} to \e {slider}.
\li Remove the value from \uicontrol {Source Property}.
\endlist
\image animation-tutorial-binding-2.png
\endlist
\section1 Previewing
Now, the animations are done. To preview and test your application,
select \key Alt + \key{P}.
*/
|
