Examples of org.apache.batik.util.awt.RadialGradientPaint
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org.apache.batik.util.awt.RadialGradientPaint
This class provides a way to fill a shape with a circular radial color gradient pattern. The user may specify 2 or more gradient colors, and this paint will provide an interpolation between each color.
The user must provide an array of floats specifying how to distribute the colors along the gradient. These values should range from 0.0 to 1.0 and act like keyframes along the gradient (they mark where the gradient should be exactly a particular color).
This paint will map the first color of the gradient to a focus point within the circle, and the last color to the perimeter of the circle, interpolating smoothly for any inbetween colors specified by the user. Any line drawn from the focus point to the circumference will span the all the gradient colors. By default the focus is set to be the center of the circle.
Specifying a focus point outside of the circle's radius will result in the focus being set to the intersection point of the focus-center line and the perimenter of the circle.
Specifying a cycle method allows the user to control the painting behavior outside of the bounds of the circle's radius. See LinearGradientPaint for more details.
The following code demonstrates typical usage of RadialGradientPaint:
Point2D center = new Point2D.Float(0, 0);
float radius = 20; float[] dist = {0.0, 0.2, 1.0};
Color[] colors = {Color.red, Color.white, Color.blue};
RadialGradientPaint p = new RadialGradientPaint(center, radius, dist, colors);In the event that the user does not set the first keyframe value equal to 0 and the last keyframe value equal to 1, keyframes will be created at these positions and the first and last colors will be replicated there. So, if a user specifies the following arrays to construct a gradient:
{Color.blue, Color.red}, {.3, .7}
this will be converted to a gradient with the following keyframes: {Color.blue, Color.blue, Color.red, Color.red}, {0, .3, .7, 1}
This image demonstrates a radial gradient with NO_CYCLE and default focus.
This image demonstrates a radial gradient with NO_CYCLE and non-centered focus.
This image demonstrates a radial gradient with REFLECT and non-centered focus. @author Nicholas Talian, Vincent Hardy, Jim Graham, Jerry Evans @author Vincent Hardy @version $Id: RadialGradientPaint.java,v 1.3 2000/11/18 07:31:45 vhardy Exp $
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