Graphics 版 (精华区)
发信人: killest (victor), 信区: Graphics
标 题: [转载] VC 4.0中使用OpenGL(4)
发信站: 紫 丁 香 (Wed Apr 22 10:28:32 1998), 站内信件
【 以下文字转载自 Programming 讨论区 】
【 原文由 xiaojun 所发表 】
The OpenGL Library implementation follows the client-server model. OpenGL
clients and servers need not even reside on the same machine.
Basic OpenGL Concepts
At the basic level, the OpenGL Library deals with vertices. A vertex is a
point, for example the end point of a line, or a corner of a polygon.
Vertices can be two- or three-dimensional.
At the next level are primitives. Primitives consist of a group of one or
more vertices. For example, a rectangle described as a set of four vertices
is a primitive.
How vertices are assembled into primitives and how primitives are drawn
into a frame buffer are controlled by a variety of settings. For example,
applications can specify a three-dimensional transformation matrix that
defines how the coordinates of an object are translated into coordinates on
the drawing surface.
In addition to its ability to draw points and lines, OpenGL can also draw
surfaces, apply lighting specifications, and use texture bitmaps.
Another set of features enables applications to selectively use or discar
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