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-
- AnfyPlasma 2.1 - Copyright (C) by Fabio Ciucci 1996/98
-
-
- This applet can generate and animate a realtime "plasma" effect, well know
- in the "demo scene" contest.
- Remember that are needed both Plasma3.class , Lware.class and anfy.class.
- You must upload these 3 .class files and insert the <applet> tag on your
- html document to add this applet to your page.
- This applet is fully parametrized, so you can generate all kinds of plasma
- 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):
-
-
- <applet code="Plasma3.class" width=192 height=192> ; 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="Plasma applet"> ; Statusbar message
- <param name=res value="3"> ; resolution (1-8)
- <param name=gen1 value="43"> ; generator1 (8-2000)
- <param name=gen2 value="31"> ; generator2 (3-256)
- <param name=gen3 value="36"> ; generator3 (3-256)
- <param name=red1 value="0"> ; Red1 (0-255)
- <param name=red2 value="127"> ; Red2 (0-255)
- <param name=red3 value="1"> ; Red3 (1-8)
- <param name=green1 value="127"> ; Green1 (0-255)
- <param name=green2 value="127"> ; Green2 (0-255)
- <param name=green3 value="2"> ; Green3 (1-8)
- <param name=blue1 value="127"> ; Blue1 (0-255)
- <param name=blue2 value="127"> ; Blue2 (0-255)
- <param name=blue3 value="1"> ; Blue3 (1-8)
- <param name=speed value="1"> ; Speed (1-8)
- <param name=textscroll value="plasmscr.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=fixnetscape value="NO"> ; Fix Netscape 3.0 bug ("YES","NO")
- <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 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.
-
- The res parameter determine the resolution: with res=1 pixels are small,
- but effect is slow, with res=8 pixels are too great but effect fast.
- I think the best choices are 2-4.
-
- About the plasma generators gen1,gen2,gen3, I can say that gen1 is a sort
- of smooth value: the min is 8 (very smooth, like fog), and the max is 2000,
- where all is psychedelic (too much, I think). Gen2 and Gen3 are x and y
- stretchers... can go from 3 (many small curves) to 256 (one great curve).
-
- About the palette, there are 3 parameters for each Red Green Blue (RGB)
- component. This is more complex, but can give you much flexibility (and
- also the power to do many bugged palettes).
- The red1,green1,blue1 values (0-255) are the multipliers of tonality.
- The red2,green2,blue2 values (0-255) are fixed added values of tonality.
- The red3,green3,blue3 values (1-8) are "smoothing" values of tonality.
- This mean that if red1=0, then green3 value is totally disabled and
- all the 256 colours will have "red2" red component.
- Try to change this values, but some combinations make ugly palettes,
- you have to make some experiments. Just for who can understand, consider
- the formula used to make palette (r steps from 0 to 255):
-
- red = (sin(r*PI*2/(256/red3 ))*red1 )+red2
- green= (sin(r*PI*2/(256/green3))*green1)+green2
- blue = (sin(r*PI*2/(256/blue3 ))*blue1 )+blue2
-
- In any case a component value must exceed 255. easy, no?
-
- The speed, from 1 to 8, is useful only when you make really large plasmas
- that are slow... in this case you can increase a bit this value, but
- the plasma will be not really more fast: it will simply skip some frames,
- and this add flickerings and loose smoothness (in faster machines).
- Please use speed = 1 when possible. Or atleast don't exceed speed=4.
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-
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