|
1 | 1 | ## 动画设计 |
2 | 2 | 想象一下,我们有这么一串输入字符“21+3*152--”,每一个字符就是一个台球。那么就有这样一串按顺序排列测台球: |
3 | | -<img src="img/ball-2.png" width="24px"><img src="img/ball-1.png" width="24px"><img src="img/ball-add.png" width="24px"><img src="img/ball-3.png" width="24px"><img src="img/ball-mul.png" width="24px"><img src="img/ball-1.png" width="24px"><img src="img/ball-5.png" width="24px"><img src="img/ball-2.png" width="24px"><img src="img/ball-sub.png" width="24px"><img src="img/ball-sub.png" width="24px">。而“栈”就想象成一个上面开口的长桶, |
4 | | -<div style="display: flex; |
5 | | - flex-direction: row;"> |
6 | | - <div> |
7 | | - <img src="img/tube.png" width="42px"> |
8 | | - </div> |
9 | | - <div> |
10 | | - <img src="img/ball-2.png" width="24px"> |
11 | | - <img src="img/ball-1.png" width="24px"> |
12 | | - <img src="img/ball-add.png" width="24px"> |
13 | | - <img src="img/ball-3.png" width="24px"> |
14 | | - <img src="img/ball-mul.png" width="24px"> |
15 | | - <img src="img/ball-1.png" width="24px"> |
16 | | - <img src="img/ball-5.png" width="24px"> |
17 | | - <img src="img/ball-2.png" width="24px"> |
18 | | - <img src="img/ball-sub.png" width="24px"> |
19 | | - <img src="img/ball-sub.png" width="24px"> |
20 | | - </div> |
21 | | -</div> |
22 | | -桶的口径刚好可以放进一个球, |
23 | | -<div style="display: flex; |
24 | | - flex-direction: row;"> |
25 | | - <div> |
26 | | - <img src="img/tube.png" width="42px"> |
27 | | - <img src="img/ball-2.png" width="24px" style="position: relative; left: -37px; top: -6px"> |
28 | | - </div> |
29 | | - <div> |
30 | | - <img src="img/ball-1.png" width="24px"> |
31 | | - <img src="img/ball-add.png" width="24px"> |
32 | | - <img src="img/ball-3.png" width="24px"> |
33 | | - <img src="img/ball-mul.png" width="24px"> |
34 | | - <img src="img/ball-1.png" width="24px"> |
35 | | - <img src="img/ball-5.png" width="24px"> |
36 | | - <img src="img/ball-2.png" width="24px"> |
37 | | - <img src="img/ball-sub.png" width="24px"> |
38 | | - <img src="img/ball-sub.png" width="24px"> |
39 | | - </div> |
40 | | -</div> |
| 3 | +<img src="img/ball-2.png" width="24px"><img src="img/ball-1.png" width="24px"><img src="img/ball-add.png" width="24px"><img src="img/ball-3.png" width="24px"><img src="img/ball-mul.png" width="24px"><img src="img/ball-1.png" width="24px"><img src="img/ball-5.png" width="24px"><img src="img/ball-2.png" width="24px"><img src="img/ball-sub.png" width="24px"><img src="img/ball-sub.png" width="24px">。而“栈”就想象成一个上面开口的长桶, |
| 4 | +<img src="img/step-0.png"> |
| 5 | + |
| 6 | +桶的口径刚好可以放进一个球, |
| 7 | +<img src="img/step-1.png"> |
| 8 | + |
41 | 9 | 我们把球一个个放进桶中,或从桶里拿出的过程球就好像进栈和出栈的过程,用动画来展示出来。 |
42 | | -<div style="display: flex; |
43 | | - flex-direction: row;"> |
44 | | - <div> |
45 | | - <img src="img/tube.png" width="42px"> |
46 | | - <img src="img/ball-2.png" width="24px" style="position: relative; left: -37px; top: -6px"> |
47 | | - <img src="img/ball-1.png" width="24px" style="position: relative; left: -65px; top: -30px"> |
48 | | - </div> |
49 | | - <div> |
50 | | - <img src="img/ball-add.png" width="24px"> |
51 | | - <img src="img/ball-3.png" width="24px"> |
52 | | - <img src="img/ball-mul.png" width="24px"> |
53 | | - <img src="img/ball-1.png" width="24px"> |
54 | | - <img src="img/ball-5.png" width="24px"> |
55 | | - <img src="img/ball-2.png" width="24px"> |
56 | | - <img src="img/ball-sub.png" width="24px"> |
57 | | - <img src="img/ball-sub.png" width="24px"> |
58 | | - </div> |
59 | | -</div> |
| 10 | + |
| 11 | +<img src="img/step-2.png"> |
| 12 | + |
60 | 13 | 如果碰到运算符,就以相反顺序取出小球参与运算,得到代表结果的新的台球球, |
61 | | -<div style="display: flex; |
62 | | - flex-direction: row;"> |
63 | | - <div> |
64 | | - <img src="img/tube.png" width="42px"> |
65 | | - <img src="img/ball-2.png" width="24px" style="position: relative; left: -37px; top: -6px"> |
66 | | - <img src="img/ball-1.png" width="24px" style="position: relative; left: -65px; top: -30px"> |
67 | | - </div> |
68 | | - <div> |
69 | | - <img src="img/ball-add.png" width="24px" style="position: relative; top: 56px"> |
70 | | - <img src="img/ball-3.png" width="24px"> |
71 | | - <img src="img/ball-mul.png" width="24px"> |
72 | | - <img src="img/ball-1.png" width="24px"> |
73 | | - <img src="img/ball-5.png" width="24px"> |
74 | | - <img src="img/ball-2.png" width="24px"> |
75 | | - <img src="img/ball-sub.png" width="24px"> |
76 | | - <img src="img/ball-sub.png" width="24px"> |
77 | | - </div> |
78 | | -</div> |
79 | | -<div style="display: flex; |
80 | | - flex-direction: row;"> |
81 | | - <div> |
82 | | - <img src="img/tube.png" width="42px"> |
83 | | - <img src="img/ball-2.png" width="24px" style="position: relative; left: -37px; top: -6px"> |
84 | | - </div> |
85 | | - <div> |
86 | | - <img src="img/ball-1.png" width="24px" style="position: relative; top: 57px"> |
87 | | - <img src="img/ball-add.png" width="24px" style="position: relative; top: 56px"> |
88 | | - <img src="img/ball-3.png" width="24px"> |
89 | | - <img src="img/ball-mul.png" width="24px"> |
90 | | - <img src="img/ball-1.png" width="24px"> |
91 | | - <img src="img/ball-5.png" width="24px"> |
92 | | - <img src="img/ball-2.png" width="24px"> |
93 | | - <img src="img/ball-sub.png" width="24px"> |
94 | | - <img src="img/ball-sub.png" width="24px"> |
95 | | - </div> |
96 | | -</div> |
97 | | -<div style="display: flex; |
98 | | - flex-direction: row;"> |
99 | | - <div> |
100 | | - <img src="img/tube.png" width="42px"> |
101 | | - </div> |
102 | | - <div> |
103 | | - <img src="img/ball-1.png" width="24px" style="position: relative; top: 57px"> |
104 | | - <img src="img/ball-add.png" width="24px" style="position: relative; top: 56px"> |
105 | | - <img src="img/ball-2.png" width="24px" style="position: relative; top: 56px"> |
106 | | - <img src="img/ball-3.png" width="24px"> |
107 | | - <img src="img/ball-mul.png" width="24px"> |
108 | | - <img src="img/ball-1.png" width="24px"> |
109 | | - <img src="img/ball-5.png" width="24px"> |
110 | | - <img src="img/ball-2.png" width="24px"> |
111 | | - <img src="img/ball-sub.png" width="24px"> |
112 | | - <img src="img/ball-sub.png" width="24px"> |
113 | | - </div> |
114 | | -</div> |
| 14 | +<img src="img/step-3.png"> |
| 15 | + |
| 16 | +<img src="img/step-4.png"> |
| 17 | + |
| 18 | +<img src="img/step-5.png"> |
| 19 | + |
115 | 20 | 再放回桶中。 |
116 | | -<div style="display: flex; |
117 | | - flex-direction: row;"> |
118 | | - <div> |
119 | | - <img src="img/tube.png" width="42px"> |
120 | | - <img src="img/ball-3.png" width="24px" style="position: relative; left: -37px; top: -6px"> |
121 | | - </div> |
122 | | - <div> |
123 | | - <img src="img/ball-3.png" width="24px"> |
124 | | - <img src="img/ball-mul.png" width="24px"> |
125 | | - <img src="img/ball-1.png" width="24px"> |
126 | | - <img src="img/ball-5.png" width="24px"> |
127 | | - <img src="img/ball-2.png" width="24px"> |
128 | | - <img src="img/ball-sub.png" width="24px"> |
129 | | - <img src="img/ball-sub.png" width="24px"> |
130 | | - </div> |
131 | | -</div> |
| 21 | + |
| 22 | +<img src="img/step-6.png"> |
| 23 | + |
132 | 24 |
|
133 | 25 | ## 类的设计 |
134 | 26 | ``` |
|
0 commit comments