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CGCOLOR24

CGCOLOR24
  The purpose of this function is to convert a RGB color triple
  into the equivalent 24-bit long integer. The 24-bit integer
  can be decomposed into the appropriate color by interpreting
  the lowest 8 bits as red, the middle 8 bits as green, and the
  highest 8 bits as blue. This routine was written to be used with
  device-independent color programs like `cgColor`.
 

Categories


    Graphics, Utilities
   

Returns


    A 24-bit long integer that can be decomposed into a color triple value.
   

Params


    color: in, required
      A three-element column or row array representing a color triple. Or an
      N-by-three element array of color triples. The values of the elements
      must be between 0 and 255.

Examples


    To convert the color triple for the color YELLOW, (255, 255, 0), to the
    hexadecimal value '00FFFF'x or the decimal number 65535, type::
   
      color = COLOR24([255, 255, 0])

Author


    FANNING SOFTWARE CONSULTING::
      David W. Fanning
      1645 Sheely Drive
      Fort Collins, CO 80526 USA
      Phone: 970-221-0438
      E-mail: david@idlcoyote.com
      Coyote's Guide to IDL Programming: http://www.idlcoyote.com

History


    Change History::
        Written by: David Fanning, 3 February 96.
        Completely revised the algorithm to accept color arrays. 19 October 2000. DWF.
           

Copyright


    Copyright (c) 1996-2012, Fanning Software Consulting, Inc.



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