Anfy BumpMap - Copyright (C) by Fabio Ciucci 1997/98

 ­TÃf http://www.geocities.com/Vienna/Choir/4659/
This applet shows a lightsource over a "bumpy" surface which casts shadows
depending from where the light originates.This applet is fully parametrized,
so you can generate bumpmaps for your own needs.

This applet is based on original code by Martin Zettergren that is used under
license.
The transparent image sun.gif is a courtesy of Lone Star Posse Prod. Inc.

The applet can use any picture in any size and it can optionally have a
separate bump-image, which must be the same size as the picture. 

The following 3 ".class" files must be uploaded: anfybump.class, Lware.class
and anfy.class.

Insert the <applet> tag in your html document as follows to add this applet
to your page (Comments after the ";" symbol are code explanations and
acceptable min/max values. They are not part of the applet language):



<applet code="anfybump.class" width=256 height=256> ; Name, Width, Height
<param name=credits value="Applet by Fabio Ciucci (www.anfyjava.com)">
<param name=regcode value="NO">          ; Registration code (if you have it)
<param name=reglink value="NO">          ; Optional URL link when the applet
                                           is "clicked".
<param name=regnewframe value="YES">     ; Reglink opened in new frame?
<param name=regframename value="_blank"> ; Name of new frame for reglink
<param name=statusmsg value="Bumpmap applet">  	; Statusbar message
<param name=res value="1">               ; resolution (1-8)
<param name=picture value="Symb256.jpg"> ; Image to load
<param name=bump value="NO">             ; optional bump-image
<param name=bump_height value="1">       ; Bump Height
<param name=angle_x value="3">           ; light x-dir movement    
<param name=angle_y value="4">           ; light y-dir movement
<param name=lightsize value="9">         ; size of lightsource
<param name=lightpower value=95>         ; Light power (1..100)
<param name=lightmin value=10>           ; Light min power (1..511)
<param name=lightmax value=500>          ; Light max power (1..511)
<param name=interactive value="YES">     ; Interaction ("ON" .. "OFF")
<param name=overimg value="NO">          ; Optional image over applet
<param name=overimgX value="0">          ; Over image X offset
<param name=overimgY value="0">          ; Over image Y offset
<param name=memdelay value="1000">       ; Memory deallocation delay
<param name=priority value="3">          ; Task priority (1..10)
<param name=MinSYNC value="10">          ; Min. milliseconds/frame for sync
Sorry, your browser doesn't support Java.; Message for no java browsers
</applet>                                ; End of applet tag


                             ---------


The following instructions detail how to change parameters:

Attempting to change the credits parameter will disable the applet.

To activate the reg parameters read the shareware registration notes.
In the "regcode" parameter, place the registration code you
purchased from the author. If the code is correct and the applet is run from
the registered domain name, you can use "link" parameters to link to a URL
when the applet is "clicked".

If you set "regnewframe" to "YES", you can specify a specific frame location
for the reglink:

"_blank"  : To load the link in a new blank unnamed browser window.
"_self"   : To load the link into the same window the applet occupies.
"_parent" : To load the link into the immediate FRAMESET parent.
"_top"    : To load the link into the top body of the window.

You can also set a custom frame name, such as "myframe1".

With the "overimg" parameter you can specify the name of an image that will
be painted over the applet. The best options are transparent GIF images.
NOTE: Animated GIF images are supported, but will be displayed as animated
only on latest browsers (Netscape 4 and Explorer 4 or newer).
With "overimgX" and "overimgY" you can center the image over the applet area.

Changing the width and height of the applet will make the visible area of
the bumpmap larger. You can have a width and height that are smaller than
the picture to display, however we recommended that you have the same
dimensions on the applet's width and height as on the Image. 

If res=1, remember to place the exact size of image in "width" and "height"
tags. If res=2, place double values, if res=3 place triple values etc.
(In fact, res is a sort of zoomer).

The "picture" param is the filename of the picture to display. Make sure that
this picture is available, or the applet will not work. Remember that using
the correct upper and lower case is very important, or the applet will not
run on non-P.C. machines. Example: Symb256.jpg should be written exactly as
it appears, NOT SYMB256.JPG or sYmB256.jPG.

The "bump" param specifies if you want to use a separate bump-image or if you
want to calculate it from the picture. The latter is recommended since it
takes up less bandwidth, and the calculated bump-image is run through some
advanced filters to make it look realistic. Simply set this param to "NO" if
you want to use a calculated image, or to the filename of the bump-image if
you want to use that option.
Example: SymbBump.jpg or whatever your bump-image is called.

The "bump_height" param controls the height of the bump. If set high, the
shadows are cast so that it appears to be higher bumps in the picture.

The "angle_x" param controls the movement of the lightsource in the
horizontal direction. A higher value will make the lightsource go faster per
frame horizontally.

The "angle_y" param controls the movement of the lightsource in the
vertical direction. A higher value will make the lightsource go faster per
frame vertically.

The "lightsize" param controls the size of the lightsource, ranging from 3 to
whatever you would like. The size is calculated as 2^n,where n stands for the
lightsize.

A lightsize of 9 would give a lightsize that is 512x512 pixels in size.
The minimum lightsize is 8x8. There is no maximum limit, but due to memory
aspects, the lightsize shouldn't exceed 512x512 pixels (9).

With "lightpower" you can choose a light intensity from 1 to 100.
With lightmin and lightmax parameters, you can choose darker and lighter
tolerances between 1 and 511.

The best test of this effect is with mouse movements, with the
feature of interactive placement of the light enabled. Usually the light is
moved around the image automatically, but if you set to "YES" the
"interactive" parameter, the user can move the light with the mouse when it
is over the applet area. The automatic movements will restart after 2 seconds
of no user activity. If set to "NO", the user interact option is disabled.