Anfy IFS-fractals 1.1 - Copyright (C) by Fabio Ciucci 1997/98


This applet renders fractals by recursivly calculating a fractal-tree that
morphs using sin and cos tabs. The applet is fully configurable regarding
fractal generation and color palette.
This applet is based on original code by Martin Zettergren that is used
under license.
Remember that are needed both AnFract.class and Lware.class.
You must upload these 2 .class files and insert the <applet> tag on your
html document to add this applet to your page.

Here an example of what you have to write in the html (the things anfter
the ; are comments with min-max values acceptet):


<applet code=AnFract.class width=200 height=200>  ; Name, Width, Height
<param name=credits value="Applet by Fabio Ciucci (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="IFS fractals applet">  ; Statusbar message
<param name=dimensions value="8">       ; Number of of iterations each branch
<param name=branches value="2">         ; Branches per iteration
<param name=morph_speed value="3">      ; Speed of morphs through shapes
<param name=rot_speed value="5">        ; Rotation speed within iterations
<param name=rot_speed2 value="-5">      ; Rotation speed of whole fractal
<param name=decline value="0.75">       ; Length decrease each iteration
<param name=length value="26">          ; Length of the starting line
<param name=pensize value="1">          ; Drawing pen size (1..3)
<param name=progress value="YES">       ; Progressive pen increase (YES,NO)
<param name=progrinverse value="NO">    ; Inverse progressive pen (YES,NO)
<param name=progrstep value="2">        ; Pen progression stepping
<param name=iterskip value="YES">       ; Half iter skipping ("YES" or "NO")
<param name=backimage value="NO">       ; Background image (it's name or "NO")
<param name=backR value="0">            ; Background color (red component)
<param name=backG value="0">            ; Background color (green component)
<param name=backB value="0">            ; Background color (blue component)
<param name=ifsR1 value="255">          ; Fractal color 1 (red component)
<param name=ifsG1 value="255">          ; Fractal color 1 (green component)
<param name=ifsB1 value="180">          ; Fractal color 1 (blue component)
<param name=ifsR2 value="10">           ; Fractal color 2 (red component)
<param name=ifsG2 value="50">           ; Fractal color 2 (green component)
<param name=ifsB2 value="255">          ; Fractal color 2 (blue component)
<param name=overtext value="YES">       ; Fractal over text? ("YES", "NO")
<param name=textscroll value="NO">      ; 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
Sorry, your browser doesn't suppor Java.  ; Message for no java browsers.
</applet>                                 ; End of applet tag

                             ---------


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".

The size of the applet is determined by width and height tags.

Changing the width, and height of the applet will make the visible area of
the fractal larger. The fractal is always automatically placed in the middle
of the applet's visible area.

The "dimensions" param controls how many iterations are performed to generate
the fractal.

The "branches" param controls how many 'branches' are made from the starting
point. It is multiplied by 2 for each iteration.

NOTE: The formula used to calc the fractal tree is based around the
concept of: 2^dimensions * 2 * branches.
So, think about that when you specify the number of dimensions and branches
that too complex fractals takes up alot of memory and a lot of the
computers speed.
Have about 8 dimensions (iterations) and about 1-5 branches for the best
and fastest results.

The "morph_speed" param controls the speed the applet tree morphs through
different shapes

The "rot_speed" param controls the speed of the rotation within each branch
of the fractal tree.

The "rot_speed2" param controls the speed of the rotation within the whole
fractal tree.

The "length" param control the length of the starting line of the fractal.

The "decline" param controls the decline of the length of lines drawn for
each iteration. This could be an increase too, if you make the value more
than 1. For example 0.75 gives a 25% decrease of the length for each
iteration. 1.25 gives a 25% increase of the length for each iteration.

You can choose the pen size with "pensize" parameter, from a size of thru 3.

Otherwise, set the "progress" parameter to "YES" to enable the progressive
pen size increasing, controlled with the "progrstep" parameter.

Optionally you can invert the progression setting "progrinverse" parameter
to "YES".

To increase speed and have a different effect, set the "iterskip" parameter
to "YES".

You can change the colours for best results over your web page, the RGB
values are same as HTML tags, but in decimal values.

Use backR,backG,backB to change background color.

If you want to display an image in the background, place it's name in the
place of "NO" at backimage parameter (for example "back.jpg").
The only requirement is that the background image must be same size as the
applet to completely cover it.

About fractal color, you can choose the first and last color of a gradient
that will be spread over all the fractals: ifsR1,ifsG1,ifsB1 for first
color, ifsR2,ifsG2,ifsB2 for last color of gradient.
Examples: to make ALL the fractals white, place 255 as value for all the
ifsR1,ifsG1,ifsB1 and ifsR2,ifsG2,ifsB2.
To make fractals coloured from black to white (all the intermediate grays),
place a value of 255 for ifsR1,ifsG1,ifsB1 and a value of 0 for second
color: ifsR2,ifsG2,ifsB2.
Offcourse you can make rainbows (from red to blue, etc.).

Finally, "overtext" determine if fractals can overwrite scrolltext.