Anfy BumpMap 1.1 - Copyright (C) by Martin Zettergren 1997/98


This applet shows a lightsource over a "bumpy" surface which casts shadows
depending on where the light origins from.

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

The files needed to make this work are:

anfybump.class
anfy.class
Lware.class

You must upload these 3 files and insert the <applet> tag on your
html document to add this applet to your page. You must also upload the
images you use for the bumpmap and optionally the scrolltext file.
This applet is fully parametrized, so you can generate bumpmaps after
your own needs. Below is a brief explanation of the parameters supported in
this version:


<applet code="anfybump.class" width=256 height=256> ; Name, Width, Height
<param name=credits value="Applet by M. Zettergren (www.anfiteatro.it/java.html)">
<param name=regcode value="NO">         ; Register code (if you have it)
<param name=reglink value="NO">         ; URL where go optionally when 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=interactive value="YES">         ; Interaction ("ON" .. "OFF")
<param name=textscroll value="bumpscr.txt">  ; File for scrolltext or "NO"
<param name=textoffset value="140">         ; Txtscroll y offset
<param name=textspeed value="1">          ; Txtscroll speed
<param name=textfont value="Arial">       ; Txtscroll font name
<param name=textbold value="NO">          ; Txtscroll bold ("YES" or "NO")
<param name=textsize value="24">          ; Txtscroll font size
<param name=textshadow value="YES">       ; Txtscroll shadow ("YES" or "NO")
<param name=TextColR value="200">         ; Txtscroll color (red component)
<param name=TextColG value="255">         ; Txtscroll color (green component)
<param name=TextColB value="190">         ; Txtscroll color (blue component)
<param name=TextSColR value="20">         ; Txtscroll shadow col. (red c.)
<param name=TextSColG value="20">         ; Txtscroll shadow col. (green c.)
<param name=TextSColB value="50">         ; Txtscroll shadow col. (blue c.)
<param name=TextJumpAmp value="0">        ; Txtscroll jump aplitude
<param name=TextJumpSpd value="0">        ; Txtscroll jump speed
<param name=TextSineAmp value="0">        ; Txtscroll sineshape amplitude        
<param name=TextSineSpd value="0">        ; Txtscroll sineshape movement
<param name=TextSineAngle value="0">      ; Txtscroll sineangle / pixel  
<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

; Message for no java browsers.
Sorry, your browser doesn't support Java.

; End of applet tag
</applet>


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

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

<applet codebase="." code=anfybump.class width=256 height=256>
<param name=credits value="Applet by M. Zettergren (www.anfiteatro.it/java.html)">
<param name=regcode value="NO">
<param name=reglink value="NO">
<param name=regnewframe value="YES">
<param name=regframename value="_blank">
<param name=statusmsg value="Bumpmap applet">
<param name=res value="1">
<param name=picture value="Symb256.jpg">
<param name=bump value="NO">
<param name=bump_height value=1>
<param name=angle_x value="3">
<param name=angle_y value="2">
<param name=lightsize value="9">
<param name=interactive value="YES">
<param name=textscroll value="bumpscr.txt">
<param name=textoffset value="100">         
<param name=textspeed value="2">          
<param name=textfont value="Arial">       
<param name=textbold value="NO">          
<param name=textsize value="20">          
<param name=textshadow value="YES">       
<param name=TextColR value="190">
<param name=TextColG value="230">         
<param name=TextColB value="200">         
<param name=TextSColR value="20">         
<param name=TextSColG value="20">         
<param name=TextSColB value="50">         
<param name=TextJumpAmp value="0">        
<param name=TextJumpSpd value="0">        
<param name=TextSineAmp value="0">        
<param name=TextSineSpd value="0">        
<param name=TextSineAngle value="0">        
<param name=memdelay value="1000">
<param name=priority value="10">
<param name=MinSYNC value="10">
Sorry, your browser doesn't support Java.
</applet>

                             ---------


Here are detailed instructions about how to change parameters:

The credits parameter can't be changed otherwise the applet will not work.

To activate the reg parameters read the shareware registration notes.
In the "regcode" parameter you have to place the registration code you
purchase from the author. If it is correct and the applet is run from the
registered domain name, you can use "reglink" parameter, where you can specify
an URL where bring user when the applet is clicked.
If you set to "YES" regnewframe, you can specify a frame where load 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.

Otherwise the frame name, for example "myframe1".

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, but it is 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 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 of course not work. Remember
that upper and lower case is very important, or the applet won't run on other
machine's than PC.
Example: Symb256.jpg should be written just like that, not SYMB256.JPG or
         sYmB256.jPG or something else.

The "bump" param specifies if you want to use a separate bump-image or if you
want to calculate it from the picture. The later 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 alternative.
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 apperars to be higher bumps in the picture.

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

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" params 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).

Since is nice to test this effect with mouse movements, is enabled the
feature of interactive placement of the light. 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 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.

                             ---------


Optional Scrolltext parameters:


You can optionally activate a scrolltext that will scroll over the applet.
If you don't need the scrolltext, deactivate it placing "NO" at the
"textscroll" parameter.
Otherwise you must supply the name of an ASCII text file, where you must
write the text that you want to be scrolled.
Is supported one only line of text, that can be long as you want.
Remember to upload the text file too, if you activate the scrolltext!

If activated, here are the parameters:

With "textoffset" you choose the Y offset from the top: placing it to 0 the
scroll will be placed on the top, for example, and placing a value near the
height of the applet it will scroll at the bottom.

With "textspeed" parameter you decide the scrolling speed.

With "textfont" you choose the font of text. Don't choose a strange or not
standard font, not present in all systems.
The most common fonts are "Arial", "TimesRoman" and "Courier".
If the required font is not present, the most "near" will be used.

Setting "textbold" to "YES" you will enlarge a bit the font, otherwise set
it to "NO" for normal contours.

With "textsize" you can change the size of text font.
The most common sizes are: 8,9,10,11,12,14,16,18,20,22,24,26,28,36,48,72.
Intermediate values will be scaled to nearest available size.

Setting "textshadow" to "YES", a shadow will be added to textscroll.
Otherwise, setting it to "NO", any shadow will be "projected".

You can choose the color of text with:

TextColR = Red component of color (0-255)
TextColG = Green component of color (0-255)
TextColB = Blue component of color (0-255)

For example, 0,0,0 is black, 255,255,255 is white, 255,0,0 is red,
255,255,0 is yellow, 128,128,128 is grey.
You can compose any color you want, do it trying manually or use any paint
program's color selector to find Red Green Blue components of your desired
colors.

With TextSColR,TextSColG,TextSColB you can select the color for text shadow.

If you like, you can activate the text jumping function.
If "TextJumpAmp" is set to "0", no jumping will be shown.
But increasing the value will result in text jumping: more aplitute, more
high jumps.

With "TextJumpSpd" parameter you can select the jumping speed.

If you like, you can also activate the sine scroll function.
If "TextSineAmp" is set to 0, no sine distortion will be generated.
But increasing the value will result in the that the text is waving. The
higher amplitude, the more waving.

With the "TextSineSpd" parameter you can select the speed of the wave.

With the "TextSineAngle" parameter you control how many degrees in a sinewave
shape the text will be deformed for each pixel. A higher value gives more
distortion.
                             ---------

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.

The "MinSYNC" parameter must be set to a value between 8 and 16 to slow
down animation in the case it runs too faster on faster computers or because
the applet size is very small. The optimal value seems to be 10, but you can
disable this feature placing a value of 0 if you see flickerings or excessive
slow down.

                             ---------


Copyright and distribution notices


Martin Zettergren is the author and owner of this applet.
Fabio Ciucci has made the picture included in this distribution.
You can use freely this applet to enhance your web pages. But since I am
the author of the applet, I placed a secret linkware window that will appear
if the applet is clicked with mouse, only when the applet is online on a site:
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!

NOTE: You can include the applets archive on CD-ROMS or shareware collections
and shareware sites without ask me, but only if you leave the archive(s)
unchanged.

                             ---------


Martin Zettergren (Klorathy/Ram Jam)

klorathy@geocities.com

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