1
00:00:01,210 --> 00:00:06,640
Hi guys and welcome to the first lecture in the expression section it's gonna be very interesting the

2
00:00:06,640 --> 00:00:07,500
expressions.

3
00:00:07,630 --> 00:00:13,010
And if you master them you're really going to create some fantastic animations without even a key free

4
00:00:13,510 --> 00:00:15,030
to go step by step.

5
00:00:15,040 --> 00:00:18,620
Now if you want to follow me please open expressions.

6
00:00:18,620 --> 00:00:19,980
That's a start.

7
00:00:20,010 --> 00:00:28,110
AP And in this project please double click on the quipping composition to open it and we start work

8
00:00:28,830 --> 00:00:30,520
up your dead already.

9
00:00:30,590 --> 00:00:31,970
Let's see what do we have here.

10
00:00:31,980 --> 00:00:39,430
We have a board or a circle going up and down on a motion path as simple as this for five seconds.

11
00:00:39,770 --> 00:00:42,630
And the star has no animation at all.

12
00:00:42,630 --> 00:00:49,530
Now if you are in 2018 and you want to use expressions is good to bring up the parent and link column

13
00:00:50,130 --> 00:00:50,680
for this.

14
00:00:50,700 --> 00:00:56,760
You are right click on next the name for example you go to columns and make sure the linked each check

15
00:00:57,090 --> 00:00:57,980
and you have the column.

16
00:00:57,990 --> 00:01:02,620
Over here this is used for printing and also linking properties.

17
00:01:02,730 --> 00:01:09,980
If you open the circle now down you will notice that in 2018 every property has a B.

18
00:01:10,020 --> 00:01:18,090
This is a Piqui you can use this pic with a link of properties or you can come to the stopwatch press

19
00:01:18,210 --> 00:01:24,270
alt or option on the Mac and click on it and you have the expressionlessly the menu open for you and

20
00:01:24,270 --> 00:01:30,410
you have a certain space over here which is the editing space for the expression's.

21
00:01:30,410 --> 00:01:31,870
Now here you have four icons.

22
00:01:31,910 --> 00:01:36,880
The first one is enable or this but the expression now is.

23
00:01:36,900 --> 00:01:44,510
But now you need the second one is for show posts expression graph after you have created an expression

24
00:01:44,840 --> 00:01:50,930
you can go to the graph and see how the graph is behaving for this expression and you have another Equipe

25
00:01:51,920 --> 00:01:55,440
and you have a small arrow here that says expression Englishman.

26
00:01:55,490 --> 00:02:02,310
If you click on it you will find that life x has hundreds of expressions over here.

27
00:02:02,530 --> 00:02:07,880
Now there is no need to learn all of them to learn about expressions or about linking.

28
00:02:07,920 --> 00:02:13,900
It's good to learn only the most common and the most useful ones some of them you need an expert level

29
00:02:14,170 --> 00:02:15,490
to start working on them.

30
00:02:17,240 --> 00:02:21,920
To answer the expression if you don't want it at all all you have to do is to come to the stopwatch

31
00:02:22,390 --> 00:02:26,740
based option on the map and click on it and it is it has disappeared.

32
00:02:27,760 --> 00:02:33,540
Lestat for example taking the star here and deciding that since the start has no animation and you don't

33
00:02:33,540 --> 00:02:39,390
want to create any keyframes you want to link the rotation of the star to the position because position

34
00:02:39,390 --> 00:02:44,960
is animate if you are in 2018 you can start using this.

35
00:02:45,000 --> 00:02:47,610
But I prefer to go over here to show you more.

36
00:02:47,730 --> 00:02:55,950
So I guess art or option and the Mike and I will use this is the same in fact I'll click on it and fact

37
00:02:56,900 --> 00:03:03,210
is that I can link to the whole position property X and Y or only take one single value which is the

38
00:03:03,210 --> 00:03:05,520
x value or the y value.

39
00:03:05,720 --> 00:03:07,200
Notation is a single value.

40
00:03:07,200 --> 00:03:14,360
So it would be interesting to pick up or to link the rotation to the x value of the position.

41
00:03:14,370 --> 00:03:14,890
Here you are.

42
00:03:14,880 --> 00:03:19,860
You release an expression has been created for you.

43
00:03:19,910 --> 00:03:21,320
That's quite right.

44
00:03:21,470 --> 00:03:23,590
This expression is really plain English.

45
00:03:23,600 --> 00:03:30,380
It says in this composition within the layer circle within the transformed properties.

46
00:03:30,380 --> 00:03:36,710
Please take the value of position 0 position 0 means it is the exposition.

47
00:03:36,710 --> 00:03:38,760
So you start 0 1.

48
00:03:38,770 --> 00:03:45,380
So notice it means in this composition from the last circle got a position here and take the value X

49
00:03:45,470 --> 00:03:51,960
as simple as this if you want to commit just click outside and your expression is written for you.

50
00:03:51,980 --> 00:03:58,240
Now if you play the star will be taking the rotation of values from the exposition of the circle.

51
00:03:58,490 --> 00:04:03,990
If escape through a bit here you are you're not the same value 2:59 and 2:59.

52
00:04:04,050 --> 00:04:08,410
Of course when you increase is going to give a full rotation plus the value.

53
00:04:08,460 --> 00:04:17,700
So it's 4 3 8 minus 360 the 360 year and the 78 you are now you animated the star without any keyframes.

54
00:04:17,700 --> 00:04:23,050
In short you linked the rotation of the star to the x position of the circle.

55
00:04:23,130 --> 00:04:24,340
That's it.

56
00:04:24,360 --> 00:04:28,630
So if you don't like the expression you can disable it and see what happens.

57
00:04:28,650 --> 00:04:32,760
Now it's not working at all it's disabled or you can't change it.

58
00:04:32,760 --> 00:04:34,270
You can change it in different ways.

59
00:04:34,290 --> 00:04:37,930
The first way is to give it another expression for example.

60
00:04:38,430 --> 00:04:45,710
Actually it will be nicer if you pickup it to the Y Not as the old expression disappeared and now you're

61
00:04:45,740 --> 00:04:51,160
using from the last circle in Transform position 1 which is the y value here.

62
00:04:51,380 --> 00:04:57,650
If you click out play not just now it's going to go left and right because the value of position is

63
00:04:57,650 --> 00:05:00,900
going up and down with the way you are.

64
00:05:01,380 --> 00:05:03,040
It's pretty interesting right guys.

65
00:05:03,260 --> 00:05:08,780
OK so now you have the start rotating left and right or clockwise and counterclockwise according to

66
00:05:08,780 --> 00:05:10,800
the position 1.

67
00:05:10,840 --> 00:05:16,840
If you were to create this animation with keyframes first is not going to be easy to sync them and then

68
00:05:16,840 --> 00:05:18,310
it's going to take lots of work.

69
00:05:18,310 --> 00:05:24,010
If there is any change in the circle movement then you have to go back and she the enemy but creating

70
00:05:24,010 --> 00:05:25,870
the expression using the clip.

71
00:05:25,900 --> 00:05:27,260
It's very easy.

72
00:05:27,670 --> 00:05:32,230
Thank you very much for listening in this lecture and in the next one we see more about the trip and

73
00:05:32,230 --> 00:05:33,740
how to write expression's.