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AnfyLens 2.1 - Copyright (C) by Fabio Ciucci 1996/97


This applet can simulate a lens moving over any GIF or JPG image.
Remember that are needed both AnLens.class and Lware.class.
You must upload these 2 .class files and insert the tag on your
html document to add this applet to your page.
This applet is fully parametrized, so you can generate all kinds of lens
you want. Here an example of what you have to write in the html (the
things anfter the ; are comments with min-max values acceptet):


; Name, Width, Height
; Image to load
; Size of lens
; Diagonal distortion (5 .. 20)
; XY distortion (-40 .. 40)
; Zoom factor (0 .. 30)
; Interaction ("ON" .. "OFF")
; Distortion ("ON" .. "OFF")
; X speed (0 .. 8)
; Y speed (0 .. 8)
; Memory deallocation delay
; Task priority (1..10)
Sorry, your browser doesn't suppor Java. ; Msg in no java browsers



NOTE: Don't place "; comments" on final HTML!!!

Copy and paste in your html document this cleared and correct tag:














Sorry, your browser doesn't suppor Java.



---------


Here detailed instructions about how to change parameters:


You can load any GIF or JPG image, remember to write the right size in
the width and height tags.

You can choose the width of the lens with the parameter "lenswidth".
Greater lens mean slower movements.

If you select "NO" to "distort" parameter, you will disable distortions, and
the zoom will be plain (this is useful especially for applications where the
image is zoomed to view it better).
NOTE: This parameter was added in the 2.0 version because many people asked
to add it.

With the "distdval" parameter you select the diagonal distortion.
To have a perfect sphere use the value 10, smaller values or higher
values (the range is 5 .. 20) will change the lens distortion.

The "distoxy" value (-40 .. 40) will distort X for negative values and Y
for positive values. Choose 0 for normal spheric distortion.

As you know, lens are useful to zoom images. With "zoomfactor" you will
change the ability of zooming of the lens. With a value of 0 any zooming,
only distortion. With higher values higher zooming.

Since is nice to test this effect with mouse movements, is enabled the
feature of interactive placement of the lens. Usually the lens is moved
around the image automatically, but if you set to "YES" the "interactive"
parameter, the user can move the lens with the mouse when is over the
applet area. The automatic movements will restart after 2 seconds of no
user activity. If set to "NO" the user will never interact.

You can control the speed of automatic movements with "spdx" and "spdy"
parameters.


---------


Compatibility parameters:


The "memdelay" parameter is useful only to run the applets without problems
on some bugged versions of Netscape 3, that don't deallocate correctly
the memory allocated, resulting in filling all the memory after a minute
the applet is running. This can cause also a system crash in some cases.
Last versions of browsers have fixed this problem, but if you want to run
the applets on old bugged browsers too, set "memdelay" to low values, like
"10" or "16", for example.
But this will slow down a lot the applet speed, so you have to choose
between speed (memdelay set to 1000 or higher) or slow compatibility with
old browsers (memdelay set to 20 or lower).

The "priority" parameter is useful mainly when you are running more than
one applet in same page, and one slows down or hangs.
If this applet run too slow or hangs because other one steal all the CPU
power, try increasing the priority.
Otherwise, if this applet runs well and others slows down, decrease the
priority. Consider the min priority is 1, normal priority is 5, and the
max priority is 10. Usually a priority of 3 is ok for single applets.


---------


Copyright and distribution notices


Fabio Ciucci is the author and owner of this applet.
You can use freely this applet to enhance your web pages. But since I am
the author of the applet, I placed a secret window that will appear if the
applet is clicked with mouse: it is external to the web browser, so it will
not hit the design of your beautyful html page. This small window will
simply show my name and ask for a link to my java applets page.. the user
can connect to it or cancel, or hide the window and connect after visiting
all your pages. I hope this credit part is not a problem for you...
In any case, if link is accepted a new browser window will appear and your
page will remain on the original window, so you will not lost the visitor.
Consider you will use an effect programmed by me, without pay, for FREE!



Fabio Ciucci (Randy/Ram Jam)

fabioc@anfiteatro.it

http://www.anfiteatro.it/java.html
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