Add Inverse Grayscale colour table to Papaya Viewer

Papaya viewer is a pure JavaScript medical research image viewer. You can add custom colour table by modifying its source code and rebuild. See the steps below:

• Check out Papaya source code

  git clone https://github.com/rii-mango/Papaya.git

• Modify src/js/viewer/colortable.js

  // insert after line 44:
  papaya.viewer.ColorTable.TABLE_INVERSE_GRAYSCALE = {"name": "Inverse Grayscale", "data": [[0, 1, 1, 1], [1, 0, 0, 0]],
       "gradation": true};
  
  // insert after line 94:
  papaya.viewer.ColorTable.TABLE_ALL = [
      papaya.viewer.ColorTable.TABLE_GRAYSCALE,
      papaya.viewer.ColorTable.TABLE_INVERSE_GRAYSCALE,
      papaya.viewer.ColorTable.TABLE_SPECTRUM,
      papaya.viewer.ColorTable.TABLE_FIRE,
      papaya.viewer.ColorTable.TABLE_HOTANDCOLD,
      papaya.viewer.ColorTable.TABLE_GOLD,
      papaya.viewer.ColorTable.TABLE_RED2YELLOW,
      papaya.viewer.ColorTable.TABLE_BLUE2GREEN,
      papaya.viewer.ColorTable.TABLE_RED2WHITE,
      papaya.viewer.ColorTable.TABLE_GREEN2WHITE,
      papaya.viewer.ColorTable.TABLE_BLUE2WHITE
  ];
  	

• Build using papaya-builder.sh

  ./papaya-builder.sh

  The result papaya.js and papaya.css will be in build/ directory.

see also

• How to make a colour table for Papaya viewer?
• colortable.js