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線框模型

出自維基百科,自由嘅百科全書
三個簡單嘅線框模型

線框模型sin3 kwaang1 mou4 jing4英文wire-frame model)係 3D 模型嘅一種。

概論

[編輯]
睇埋:3D 模型

呢啲模型會用類似 VRML 碼噉嘅源碼,話俾部電腦聽件模型代表嘅物體

  • 有邊啲邊(edge),每條連接住兩個喺數學上連續嘅平滑表面,
  • 又或者俾部電腦知件物體有邊啲角(vertex)同每隻角嘅位置坐標以及邊啲角之間有邊,

再俾部電腦喺要睇個模型嗰陣按某啲法則(例如「所有邊都係直線」)做彩現,砌個模型俾個用家睇。線框模型淨係考慮角同邊,唔似得多邊形網格噉會講埋表面嘅色水同光源等嘅資訊,所以一旦一個線框模型做咗彩現,望落會好似用鐵線幫件物體整咗個模型噉。如果喺個線框模型上加色水同光源等嘅資訊,就會變成一個完整嘅多邊形網格[1]

一個線框模型例子:

每隻角嘅坐標
X Y Z
1 1 1 1
2 1 -1 1
3 -1 -1 1
4 -1 1 1
5 1 1 -1
6 1 -1 -1
7 -1 -1 -1
8 -1 1 -1
個模型有邊幾條邊
起始角 終結角
1 1 2
2 2 3
3 3 4
4 4 1
5 5 6
6 6 7
7 7 8
8 8 5
9 1 5
10 2 6
11 3 7
12 4 8

睇埋

[編輯]

[編輯]
  1. Zhengxu, Z., Ghosh, S. K., & Link, D. (1990). Recognition of machined surfaces for manufacturing based on wireframe models. Journal of Materials Processing Technology, 24, 137-145.
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