ColorRun

ColorRun cycles through color gradients that sweep across the applet area as rising scanlines. On the Amiga and Atari ST this kind of effect could be achieved without touching pixel data at all — by reprogramming the color palette registers via copper or HBL (horizontal blank) interrupts on each scanline, the hardware would display different colors per line from a single flat-colored framebuffer.

This Java applet recreates that classic raster bar look in software: a thin horizontal strip is cropped from the source image using CropImageFilter at a progressively increasing Y offset and painted onto the canvas, building up the picture scanline by scanline before looping back to the start. Just point the logo parameter at any GIF or JPG and the applet does the rest.

Original

Features

Raster-bar style scanline sweep over any logo image
Works with GIF and JPG images
Double-buffered rendering
Continuous looping animation
Clickable link

Parameters

Name	Type	Description	Default	Required
`logo`	filename	Image file to animate (GIF or JPG)	–	yes

Code Example

<applet archive="ColorRun.jar"
  code="ColorRun.class" width="144" height="66">
  <param name="logo" value="colorrun.gif">
</applet>