Scrolling the Graphics of a Component

[Martin Eichenseher]

Hi all,

i hava a big problem. I would like to implement a algorithm to generate a
sinus function.

the y-value should be displayed on a specific x-point like 1, y with e.g.
drawOval() on the
graphics ( or Graphics2D )

But my problem is, after printing the point, the complete graphics context
should scoll
one step to the right, to display the next value.

Could someone give me a hint, how to manage this?

 

[John C. Bollinger]

Hi all,

i hava a big problem. I would like to implement a algorithm to generate a
sinus function.

the y-value should be displayed on a specific x-point like 1, y with e.g.
drawOval() on the
graphics ( or Graphics2D )

But my problem is, after printing the point, the complete graphics context
should scoll
one step to the right, to display the next value.

Could someone give me a hint, how to manage this?

Look somewhere else. That is to say, it doesn't make much sense to talk
about "scrolling" a graphics context. Scrolling is something that a GUI
component may do to a view (which may offer a graphics context with
which the program may draw on it). If scrolling is in fact what you
really want then you cannot accomplish it through the Graphics: look at
options through the Component that presents the view.

If you are talking about managing the drawing code itself in this
(somewhat strange) way, then you may find that Graphics.translate() is a
useful method. Do note, however, that your translation will probably
not be sticky -- that is, you cannot in general expect the next Graphics
that the method is passed to display the effects of a translation
applied during a previous invocation.


John Bollinger
(e-mail address removed)