V2EX world coordinate system

World Coordinate System

定义 Definition

world coordinate system世界坐标系。在计算机图形学、CAD、机器人与三维建模中,用来描述物体、点或相机在“全局/场景”中的位置与方向的统一参考坐标框架;与物体自身的局部坐标系相对。(在不同领域也可能简称为 world space。)

发音 Pronunciation (IPA)

/wld kordnt sstm/

例句 Examples

The character stands at the origin of the world coordinate system.
角色站在世界坐标系的原点。

To render the scene correctly, the engine first converts each model’s local vertices into the world coordinate system, then applies the view and projection transforms.
为了正确渲染场景,引擎会先把每个模型的局部顶点转换到世界坐标系,再应用视图与投影变换。

词源 Etymology

该短语由 world(世界、全局的)+ coordinate(坐标;源自拉丁语 co- “共同” + ordinare “排列、安排”)+ system(系统;源自希腊语 systēma “组合整体”)构成。整体含义直观:用于描述“整个世界/场景范围内坐标”的一套系统。

相关词 Related Words

文学与著作 Literary Works

  • Computer Graphics: Principles and Practice(《计算机图形学:原理与实践》)讨论坐标空间(object/world/view)与变换管线时常用该概念。
  • Real-Time Rendering(《实时渲染》)在渲染管线与空间变换章节中使用“world coordinate system / world space”的表述。
  • OpenGL Programming Guide(《OpenGL 编程指南》,“红宝书”)在模型、视图、投影变换说明中涉及世界空间/世界坐标的概念。
  • 3D Math Primer for Graphics and Game Development(《图形与游戏开发的 3D 数学入门》)以坐标系与参考系为核心内容,频繁使用世界坐标系相关术语。
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