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An axial gradient colors each point in space based on its position relative to two control points. The color of each point between the two control points is a linear interpolation between the colors of the two control points. Points that are not between the two control points are either completely transparent (if the nearest control point is not extended) or the same color as the nearest control point (if the nearest control point is extended).
Contributed by: Rob Raguet-Schofield (March 2011)
Open content licensed under CC BY-NC-SA
Wolfram Demonstrations Project
Published: March 7 2011