“Clamping (graphics)”的意思、由来-开放百科全书

词条 Clamping (graphics)

释义

Uses
References

In computer graphics, clamping is the process of limiting a position to an area. Unlike wrapping, clamping merely moves the point to the nearest available value.

To put clamping into perspective, pseudocode for clamping is as follows:

 '''function''' clamp(x, min, max):     '''if''' (x < min) '''then'''         x = min;     '''else if''' (x > max) '''then'''         x = max;     '''return''' x; '''end''' clamp

Pseudocode (clamping):

Uses

In general, clamping is used to restrict a value to a given range. For example, in OpenGL the glClearColor function takes four GLfloat values which are then 'clamped' to the range .^[1]

One of the many uses of clamping in computer graphics is the placing of a detail inside a polygon—for example, a bullet hole on a wall. It can also be used with wrapping to create a variety of effects.

References

1. ^{{Cite web|url=https://www.khronos.org/registry/OpenGL-Refpages/gl4/|title=OpenGL 4 Reference Pages|website=www.khronos.org|access-date=2018-10-31}}

2 : Computer graphics algorithms|Articles with example pseudocode

随便看

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。