1
00:00:00.04 --> 00:00:02.02
- In this movie, I'll share with you

2
00:00:02.02 --> 00:00:05.00
a few curvature tool curiousities.

3
00:00:05.00 --> 00:00:06.03
First of all, I'll show you how to extend

4
00:00:06.03 --> 00:00:07.05
an open path outline.

5
00:00:07.05 --> 00:00:10.02
I'll show you how to
delete and convert points.

6
00:00:10.02 --> 00:00:13.08
We'll see how to
interrupt and thereby open

7
00:00:13.08 --> 00:00:16.08
a closed path outline, that
one's really interesting,

8
00:00:16.08 --> 00:00:19.07
and also show you how to
constrain the angle of a segment.

9
00:00:19.07 --> 00:00:21.05
So, first starters here, notice that

10
00:00:21.05 --> 00:00:23.02
I have the black arrow tool active.

11
00:00:23.02 --> 00:00:25.07
Let's say I go ahead
and click in the spiral,

12
00:00:25.07 --> 00:00:27.01
in order to select it.

13
00:00:27.01 --> 00:00:29.06
The second I switch to the curvature tool,

14
00:00:29.06 --> 00:00:32.03
which you could get once
again by pressing shift tilde,

15
00:00:32.03 --> 00:00:34.00
it leaps upon this path outline.

16
00:00:34.00 --> 00:00:36.04
It's just gung-ho to extend it,

17
00:00:36.04 --> 00:00:39.01
starting from the last
point that you created,

18
00:00:39.01 --> 00:00:41.04
which means if I click over here,

19
00:00:41.04 --> 00:00:44.05
that I'm going to add
more points to that spiral

20
00:00:44.05 --> 00:00:45.08
from the inside out.

21
00:00:45.08 --> 00:00:47.08
That's not what I want,
so I'll press ctrl+z

22
00:00:47.08 --> 00:00:50.05
or cmd+z on a Mac to undo those changes.

23
00:00:50.05 --> 00:00:52.00
If what you want to do is extend

24
00:00:52.00 --> 00:00:53.07
the spiral from the outside,

25
00:00:53.07 --> 00:00:55.06
then you need to press the esc key

26
00:00:55.06 --> 00:00:58.03
to get rid of that rubber
band line right there,

27
00:00:58.03 --> 00:01:00.05
and then you want to click
on that outside endpoint

28
00:01:00.05 --> 00:01:03.09
and then continue clicking to add points.

29
00:01:03.09 --> 00:01:05.09
Now let's say that you
want to delete a point.

30
00:01:05.09 --> 00:01:08.08
For example, I want to get
rid of this point right there.

31
00:01:08.08 --> 00:01:10.08
Then, just go ahead and
click on it to select it

32
00:01:10.08 --> 00:01:12.04
and then press the backspace key

33
00:01:12.04 --> 00:01:14.06
or the delete key on the Mac to remove it

34
00:01:14.06 --> 00:01:18.07
and draw a new segment
between the remaining points.

35
00:01:18.07 --> 00:01:20.07
If you press backspace or delete again,

36
00:01:20.07 --> 00:01:23.03
you're going to get rid of
the entire path outline.

37
00:01:23.03 --> 00:01:24.01
That's not what I want

38
00:01:24.01 --> 00:01:26.06
so I'll just go ahead and press
ctrl+z or cmd+z on the Mac

39
00:01:26.06 --> 00:01:29.00
to bring that path back and you can see

40
00:01:29.00 --> 00:01:30.07
the curvature tool is already on it.

41
00:01:30.07 --> 00:01:33.02
It's ready to add points
from the center out again.

42
00:01:33.02 --> 00:01:34.04
That's not what I want.

43
00:01:34.04 --> 00:01:36.01
So I'll press the esc key

44
00:01:36.01 --> 00:01:37.09
in order to get rid of that rubber band.

45
00:01:37.09 --> 00:01:40.01
And then I'll click on
this point to select it

46
00:01:40.01 --> 00:01:41.04
and I'll press the backspace key

47
00:01:41.04 --> 00:01:44.02
or the delete key on the
Mac to get rid of it.

48
00:01:44.02 --> 00:01:46.03
All right, now let's you
want to convert a point

49
00:01:46.03 --> 00:01:48.09
from corner to smooth or smooth to corner.

50
00:01:48.09 --> 00:01:51.01
Then, I'll go ahead and
click on this path outline

51
00:01:51.01 --> 00:01:52.06
right here to select it.

52
00:01:52.06 --> 00:01:54.01
And notice, for whatever reason,

53
00:01:54.01 --> 00:01:56.00
if I drag this top point down,

54
00:01:56.00 --> 00:01:59.00
it was actually a corner
point just a moment ago,

55
00:01:59.00 --> 00:02:01.08
but as soon as I start dragging
it with a curvature tool,

56
00:02:01.08 --> 00:02:04.02
Illustrator converts it to a smooth point

57
00:02:04.02 --> 00:02:05.05
and that is just sometimes

58
00:02:05.05 --> 00:02:07.02
what the curvature tool is going to do.

59
00:02:07.02 --> 00:02:08.09
It's going to automatically convert

60
00:02:08.09 --> 00:02:10.07
and invent points for you,

61
00:02:10.07 --> 00:02:14.01
depending on its interpretation
of a path outline.

62
00:02:14.01 --> 00:02:17.02
If you want to convert this
guy back to a corner point,

63
00:02:17.02 --> 00:02:20.03
then you can double click on it, like so.

64
00:02:20.03 --> 00:02:22.05
And I could do the same thing
to this point, for example.

65
00:02:22.05 --> 00:02:26.00
I could double click on it to
covert it to a corner point.

66
00:02:26.00 --> 00:02:28.06
If you want to convert a
corner point to a smooth point,

67
00:02:28.06 --> 00:02:30.07
you just double click once again.

68
00:02:30.07 --> 00:02:32.02
And I want you to notice the difference

69
00:02:32.02 --> 00:02:34.06
between smooth points and corner points.

70
00:02:34.06 --> 00:02:36.04
They actually appear differently.

71
00:02:36.04 --> 00:02:38.08
You'll have to look very
closely at the video here.

72
00:02:38.08 --> 00:02:41.00
The smooth points appear
as hollow circles.

73
00:02:41.00 --> 00:02:43.04
The corner points appear as hollow circles

74
00:02:43.04 --> 00:02:45.05
with dots inside of them.

75
00:02:45.05 --> 00:02:47.00
Another way to convert points is to

76
00:02:47.00 --> 00:02:49.00
alt or option click on them.

77
00:02:49.00 --> 00:02:51.06
So, if I alt or option click on this guy,

78
00:02:51.06 --> 00:02:54.02
he goes from being a smooth
point to a corner point.

79
00:02:54.02 --> 00:02:55.08
And, if I click on a different point,

80
00:02:55.08 --> 00:02:58.01
you can see now that he
has a dot inside of him.

81
00:02:58.01 --> 00:03:00.03
If I want to convert him
back to a smooth point,

82
00:03:00.03 --> 00:03:04.01
then I would alt or
option click on him again.

83
00:03:04.01 --> 00:03:05.07
Now, here's one of the
most interesting things.

84
00:03:05.07 --> 00:03:08.04
It's a little bit of a
gotcha, might even be a bug,

85
00:03:08.04 --> 00:03:10.06
I'm not sure, but you
can have fun with it.

86
00:03:10.06 --> 00:03:13.00
When you have a closed
path outline selected

87
00:03:13.00 --> 00:03:15.09
and you click on the end
point of an open path,

88
00:03:15.09 --> 00:03:18.08
that's going to open up
the closed path outline

89
00:03:18.08 --> 00:03:20.04
and fuse things together.

90
00:03:20.04 --> 00:03:22.03
Now, depending on the
position of the points,

91
00:03:22.03 --> 00:03:24.02
you may end up with this effect here,

92
00:03:24.02 --> 00:03:26.07
where you have a new closed path outline

93
00:03:26.07 --> 00:03:28.02
that includes a spiral.

94
00:03:28.02 --> 00:03:30.08
I'll go ahead and press
ctrl+z or cmd+z on the Mac

95
00:03:30.08 --> 00:03:33.03
to undo that and I'll grab
the stop point right there

96
00:03:33.03 --> 00:03:34.08
and drag it upward a little bit.

97
00:03:34.08 --> 00:03:37.00
And now, I'll click on
that end point again

98
00:03:37.00 --> 00:03:40.02
and this time it just opens
up the entire path outline,

99
00:03:40.02 --> 00:03:43.06
so it's all going to depend
on where the points are

100
00:03:43.06 --> 00:03:45.01
in the first place.

101
00:03:45.01 --> 00:03:46.00
All right, here's another one.

102
00:03:46.00 --> 00:03:48.07
If you want to constrain
the angle of your cursor

103
00:03:48.07 --> 00:03:51.02
with respect to the active point,

104
00:03:51.02 --> 00:03:53.03
then you can press the
shift key and notice,

105
00:03:53.03 --> 00:03:56.05
with the shift key down, you're
going to move your cursor

106
00:03:56.05 --> 00:03:59.00
at some multiple of 45 degrees.

107
00:03:59.00 --> 00:04:01.07
And finally, if I go ahead and
double click on this point,

108
00:04:01.07 --> 00:04:04.03
this end point here to
convert it to a corner point.

109
00:04:04.03 --> 00:04:06.08
And then, I shift click with my cursor.

110
00:04:06.08 --> 00:04:08.05
Then, I'm going to
create a straight segment

111
00:04:08.05 --> 00:04:11.05
at an angle that's a
multiple of 45 degrees.

112
00:04:11.05 --> 00:04:13.04
In my case, of course, horizontal.

113
00:04:13.04 --> 00:04:15.03
And then finally, I'll deactivate the path

114
00:04:15.03 --> 00:04:17.06
by pressing the esc key and that will make

115
00:04:17.06 --> 00:04:19.07
that rubber band connection go away.

116
00:04:19.07 --> 00:04:23.03
And then I'll press ctrl+shift+a
or cmd+shift+a on the Mac

117
00:04:23.03 --> 00:04:26.01
in order to deselect my path outline.

118
00:04:26.01 --> 00:04:27.04
And so, in other words, there's a ton

119
00:04:27.04 --> 00:04:29.02
you can do with the curvature tool,

120
00:04:29.02 --> 00:04:32.02
some of which is predictable
and some of which is not.