JavaFX Fundamentals - Java 8 Recipes - page 534

the cycle method is set to the no cycle ( CycleMethod.NO_CYCLE ), and the two
color stop values are set to red ( Color.RED ) and black ( Color.BLACK ). These set-
tings create a radial gradient by starting with the color red at a center position of (80,
45) (upper left of the ellipse) and then interpolating it to the color black with a distance
of 120 pixels (radius).
Next, a rectangle having a yellow semitransparent linear gradient is created. A lin-
ear gradient ( LinearGradient ) paint is used for the yellow rectangle.
Table 14-2 is taken from the JavaFX 8.0 Javadoc definitions found for the Lin-
earGradient class (see http://docs.oracle.com/javase/8/javafx/
api/javafx/scene/paint/LinearGradient.html ).

Table 14-2 . LinearGradient Properties

Property Data Type Description

X coordinate of the gradient axis start point

startX double

Y coordinate of the gradient axis start point

startY double

X coordinate of the gradient axis end point

endX double

Y coordinate of the gradient axis end point

endY double

proportional boolean Whether the coordinates are proportional to the shape

that this gradient fills

cycleMethod CycleMethod Cycle method applied to the gradient

Whether this paint is completely opaque

opaque boolean

Gradient's color specification

stops List<Stop>

To create a linear gradient paint, you specify the startX , startY , endX , and
endY for the start\end points. The start and end point coordinates denote where the
gradient pattern starts and stops.
To create the second shape (yellow rectangle), set the start X and Y to ( 50, 50), the
end X and Y to (50, 75), the proportional to false, the cycle method to no cycle
( CycleMethod.NO_CYCLE ), and the two color stop values to yellow ( Col-
or.YELLOW ) and black ( Color.BLACK ), with an alpha transparency of .784. These
settings provide a linear gradient for the rectangle from top to bottom, with a starting
point of (50, 50) (top-left of the rectangle). It then interpolates to the color black
(bottom-left of the rectangle).
Finally, you'll notice a rounded rectangle with a repeating pattern of a gradient us-
ing green and black in a diagonal direction. This is a simple linear gradient paint that is