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# option (not recommended) you can uncomment the following to ignore the entire idea folder.
#.idea/
#VScode
.vscode/

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這个程式借Knuth ê排版理論，但是為著欲予列位知影所以mā是佇tsia介紹：
![a.svg](:/af607cb6cd2a4c34ab3c80f65efcee84)
### 2.2 一个盒仔ê結構
#### 2.2.1 咱這馬來看一个盒仔ê (Box) 結構，ē當分做若以上ê圖講ê部件：
`Box is a subtype of Element`
|屬性英語名|型別|臺語解說|
|-----|----|-----|
| basePoint | Position| 定義安khǹg盒仔ê基點。 |
| baseLineDirection | Rection | 定義基線（安khǹg元素ê基準線）ê方向|
| width | float | 基線ê長度(pt)
| height |float| BaseLine 射出去ê方向ê「倒pîng」ê長度 (pt)（m̄是kui个ê懸度 totalHeight）
| depth | float | BaseLine 射出去ê方向ê「正pîng」ê長度 (pt)
| elements | Element List | 所有內底收囥ê元素ê列單(list)，照baseLineDirection ê 方向，沿 baseLine 排in ê基點
| elementsBaseSkip | float | `elementsSpaging[i] == elements[i] 基點之間ê距離 (BaseSkip)` (px)
| pageNo | PageNo | 所屬佇ê頁數 |
其中
```OCaml
Position = struct {x: Float, y : Float}
Direction = Up | Down | Left | Right
```
#### 2.2.2相關ê函數：
|英語名|型別|臺語解說|
|-----|---|-------|
|len_of_elements | box -> int | len_of_elements box = length (box.elements)
| totalHeight | box -> float | `totalHeight box = box.height + box.depth`
| insert_element | box -> element List -> Option | 插入一个`element List`內底ê逐个元素kàu一个Box，逐个baseSkip是固定ê float，轉來`Result Box` 猶是`Exception`（that滿ê時）。（例見下kha） |
```OCaml
let a_box = Box{
basePoint = (70.0,50.0),
baseLineDirection = DOWN,
width = 400.0,
height = 700.0,
depth = 0.0,
elements = [],
elementsBaseSkip = [],
pageNo = 3
};
let a_char_list = List.map [天, 地, 儂] fun x -> CharToBox x
12.0 (*font-size*)
"AR PL New Sung" (*font-family*)
300 (*font weight*)
Normal (*font style*);;
let new_a_box = insert_element a_box a_char_list
new_a_box : Option Box
```
其中
```OCaml
Option = Result a | Exception str
```

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xml:space="preserve"
style="font-size:20.6264px;line-height:125%;font-family:'芫荽';-inkscape-font-specification:'芫荽';letter-spacing:0px;word-spacing:0px;fill:none;stroke:#000000;stroke-width:1.10498px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
x="178.12022"
y="295.83621"
id="text13364"><tspan
sodipodi:role="line"
id="tspan13362"
style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:20.6264px;font-family:Serif;-inkscape-font-specification:Serif;fill:#000000;stroke:none;stroke-width:1.10498px"
x="178.12022"
y="295.83621">elementBaseSkip[0]</tspan></text>
<text
xml:space="preserve"
style="font-size:52.0404px;line-height:125%;font-family:'芫荽';-inkscape-font-specification:'芫荽';letter-spacing:0px;word-spacing:0px;fill:#d45500;stroke:#000000;stroke-width:1.10498px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
x="79.299843"
y="29.337093"
id="text8038"
transform="scale(1.0388624,0.9625914)"><tspan
sodipodi:role="line"
id="tspan8036"
style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:FreeSerif;-inkscape-font-specification:FreeSerif;fill:#004455;stroke:none;stroke-width:1.10498px"
x="79.299843"
y="29.337093">Box</tspan></text>
</g>
</g>
</g>
</svg>
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#set text(
size: 12pt,
font: ("Linux Libertine", "Noto Serif CJK TC"),// "Linux Libertine Mono O"
)
#let hd1(txt) = box[
#set text(
font: ("FreeSans", "Noto Sans CJK TC"),// "Linux Libertine Mono O"
)
= #txt ]
#let hd2(txt) = box[
#set text(
font: ("FreeSans", "Noto Sans CJK TC"),// "Linux Libertine Mono O"
)
== #txt ]
這个程式借Knuth ê排版理論，但是為著beh予列位知影所以mā是佇tsia介紹：
#figure([#image("a.svg")],
caption: [
a.svg
]
)
=== 2.2 一个盒仔ê結構
<一个盒仔ê結構>
==== 2.2.1 咱tsit-má來看一个盒仔(Box) ê 結構，ē當分做若以上ê圖講ê部件：
`Box is a subtype of Element`
#align(center)[#table(
columns: 3,
align: (col, row) => (auto,auto,auto,).at(col),
inset: 6pt,
[屬性英語名], [型別], [臺語解說],
[basePoint],
[Position],
[定義安khǹg盒仔ê基點。],
[baseLineDirection],
[Rection],
[定義基線（安khǹg元素ê基準線）ê方向],
[width],
[float],
[基線ê長度(pt)],
[height],
[float],
[BaseLine 射出去ê方向ê「倒pîng」ê長度 (pt)（m̄是kui个ê懸度
totalHeight）],
[depth],
[float],
[BaseLine 射出去ê方向ê「正pîng」 ê 長度 (pt)],
[elements],
[Element List],
[所有內底收囥ê元素ê列單(list)，照baseLineDirection ê 方向，沿 baseLine
排in ê基點],
[elementsBaseSkip],
[float List],
[`elementsSpaging[i] == elements[i] 基點之間ê距離 (BaseSkip)` (px)],
[pageNo],
[Int],
[所屬佇ê頁數],
)
]
其中
```ocaml
Position = struct {x: Float, y : Float}
Direction = Up | Down | Left | Right
```
==== 2.2.2相關ê函數：
<相關ê函數>
#align(center)[#table(
columns: 3,
align: (col, row) => (auto,auto,auto,).at(col),
inset: 6pt,
[英語名], [型別], [臺語解說],
[len\_of\_elements],
[box -\> int],
[len\_of\_elements box \= length (box.elements)],
[totalHeight],
[box -\> float],
[`totalHeight box = box.height + box.depth`],
[insert\_element],
[box -\> element List -\> float -\> Option],
[插入一个`element List`內底ê逐个元素kàu一个Box，逐个baseSkip是固定ê
float，轉來`Result Box` á是`Exception`（that滿ê時）。（例見下kha）],
)
]
```ocaml
let a_box = Box{
basePoint = (70.0,50.0),
baseLineDirection = DOWN,
width = 400.0,
height = 700.0,
depth = 0.0,
elements = [],
elementsBaseSkip = [],
pageNo = 3
};
let a_char_list = List.map [天, 地, 儂] fun x -> CharToBox x
12.0 (*font-size*)
"AR PL New Sung" (*font-family*)
300 (*font weight*)
Normal (*font style*);;
let new_a_box = insert_element a_box a_char_list 15
(* new_a_box : Option Box *)
```
其中
```ocaml
Option = Result a | Exception str
```

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