Program that uses density colouring to show ink/dye or a glowing surface. Keys:
- Q or Escape = Quit
- Click left/right = Swirl left/right
- Shift+click left/right = Dilate/Contract
- Space = Invert colouring (black or white background)
Try it now! - press open/run if the browser prompts you (Windows 8 sometimes requires you to click 'More info' first).
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Swirling Surface (.7z file, 25KB; zip file, 30KB).
Use 7-Zip to open .7z files, WinZip files (less compression) provided for compatibility.
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