Mercurial > vba-clojure

     1 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

     2 

     3 

     4 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

     5 

     6 

     7 // This section of code is used to convert an RGB (pc) triplet into a RGB (gameboy)

     8 // triplet. This section of code was kindly donated by Brett Bibby (GameBrains).

     9 

    10 BYTE intensity[32] = 

    11   {

    12     0x00,0x10,0x20,0x30,0x40,0x50,0x5e,0x6c,0x7a,0x88,0x94,0xa0,0xae,0xb7,0xbf,0xc6,

    13     0xce,0xd3,0xd9,0xdf,0xe3,0xe7,0xeb,0xef,0xf3,0xf6,0xf9,0xfb,0xfd,0xfe,0xff,0xff

    14   };

    15 

    16 unsigned char influence[3][3] = 

    17   {

    18     {16,4,4},

    19     {8,16,8},

    20     {0,8,16}

    21   };

    22 

    23 RGBQUAD translate(BYTE rgb[3])

    24 {

    25   RGBQUAD color;

    26   BYTE	tmp[3];

    27   BYTE	m[3][3];

    28   BYTE	i,j;

    29 

    30   for (i=0;i<3;i++)

    31     for (j=0;j<3;j++)

    32       m[i][j] = (intensity[rgb[i]>>3]*influence[i][j]) >> 5;

    33 

    34   for (i=0;i<3;i++)

    35     {

    36       if (m[0][i]>m[1][i])

    37 	{

    38 	  j=m[0][i]; 

    39 	  m[0][i]=m[1][i]; 

    40 	  m[1][i]=j;

    41 	}

    42 

    43       if (m[1][i]>m[2][i])

    44 	{

    45 	  j=m[1][i]; 

    46 	  m[1][i]=m[2][i]; 

    47 	  m[2][i]=j;

    48 	}

    49 

    50       if (m[0][i]>m[1][i])

    51 	{

    52 	  j=m[0][i]; 

    53 	  m[0][i]=m[1][i]; 

    54 	  m[1][i]=j;

    55 	}

    56 

    57       tmp[i]=(((m[0][i]+m[1][i]*2+m[2][i]*4)*5) >> 4)+32;

    58     }

    59 

    60   color.rgbRed	= tmp[0];

    61   color.rgbGreen	= tmp[1];

    62   color.rgbBlue	= tmp[2];

    63 

    64   return color;

    65 }

    66 

    67 

    68 

    69 

    70 

    71 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

    72
author	Robert McIntyre <rlm@mit.edu>
date	Sun, 06 May 2012 20:54:09 -0500
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