Java Reference
In-Depth Information
insert group into exampleGroup.content;
animation.play();
}
In this example, a rectangle is created called
rect1
, which then has a
PointLight
applied to it. The
PointLight
has its location bound to the variables
x,
y,
and
z
. Note that where the
y
location of the
PointLight
is set, there's a line of commented-out code above it. At the time of this writing, there is a bug
in JavaFX 1.2 that causes
PointLight
and
SpotLight
to show up in a weird location.
The rectangle and a circle called
dot
are included in a
group
. The dot's coordinates are also bound to
the values x and
y
; the dot's
scale
is bound to the
z
value. In this way, as the animation moves the light
around, the dot will move with it to indicate its location. The dot will also grow in size as the
z
value
increases, as if it is getting closer to the viewer.
The animation simply starts by setting the
x
,
y,
and
z
values to 0.0, which is the upper left corner of
the rectangle. The animation then moves the
PointLight
to the center of the rectangle where it increases
the
z
value of the
PointLight
. As the
z
value increases, the amount of the rectangle that is illuminated
increases.
Platform Issue
There is a bug in JavaFX that can cause the light to appear in the wrong location. This may be more of an
issue for OS X users. Please see JavaFX bug RT-5579.
Spot Light Example
A spot light is much like a point light when its location and target are on the same z axis, but when a
SpotLight
is aimed at a point that is not directly under it, the cone of light emitted becomes obvious as it
is projected across a surface.
