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| Color progression ： ウィキペディア英語版 |
Color gradient
In computer graphics, a color gradient (sometimes called a color ramp or color progression) specifies a range of position-dependent colors, usually used to fill a region. For example, many window managers allow the screen background to be specified as a gradient. The colors produced by a gradient vary continuously with position, producing smooth color transitions.
==Axial gradients==
An axial color gradient (sometimes also called a linear color gradient) is specified by two points, and a color at each point. The colors along the line through those points are calculated using linear interpolation, then extended perpendicular to that line. In digital imaging systems, colors are typically interpolated in an RGB color space, often using gamma compressed RGB color values, as opposed to linear. CSS and SVG both support linear gradients.〔
(Linear Gradients ) in "CSS Image Values and Replaced Content Module Level 3", W3C Candidate Recommendation, April 2012〕〔
(Linear Gradients ) in "SVG 1.1 (Second Edition)", W3C Recommendation, August 2011〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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