Difference between revisions of "HexText/HexText 2XKanji"

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////////// DESCRIPTION /////////////////////////////////////
////////// DESCRIPTION /////////////////////////////////////
//                                                        //
//                                                        //
//  HexText 1.0 Unicode Display System                   //
//  HexText 1.1 Unicode Display System by Hexadeci Mole  //
//  Two faces for Kanji, one for all other characters     //
//  Optionally uses 2 faces for Kanji characters         //
//  Thanks to Ochi Wolfe for the FURWARE text toolset    //
//  Thanks to Ochi Wolfe for the FURWARE text toolset    //
//                                                        //
//                                                        //
Line 22: Line 22:
/*
/*
MIT License
MIT License
Copyright (c) 2018-2019 Hexadeci Mole, HexText
Copyright (c) 2018-2020 Hexadeci Mole, HexText
Permission is hereby granted, free of charge, to any person obtaining a copy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
of this software and associated documentation files (the "Software"), to deal
Line 43: Line 43:


// Numerically accurate for Furware faces, but there can be a bit of character cell bleed
// Numerically accurate for Furware faces, but there can be a bit of character cell bleed
vector  gOffset = <0.53125, 0.0123, 0.0>;
vector  gOffset = <.53125, .0123, 0>;
vector  gCellSize = <0.0625, 0.0625, 0.0>;
vector  gCellSize = <.0625, .0625, 0>;
vector  gOffsetLeft = <0.015625, 0.0123, 0.0>;
vector  gOffsetLeft = <.015625, .0123, 0>;
vector  gOffsetRight = <-0.015625, 0.0123, 0.0>;
vector  gOffsetRight = <-.015625, .0123, 0>;
vector  gCellSizeHalf = <0.03125, 0.0625, 0.0>;
vector  gCellSizeHalf = <.03125, .0625, 0>;


// Numerically accurate for normal UV faces, but there can be a bit of character cell bleed
// Numerically accurate for normal UV faces, but there can be a bit of character cell bleed
//vector  gOffset = <0.46875, 0.46875, 0.0>;
//vector  gOffset = <.46875, .46875, 0>;
//vector  gCellSize = <0.0625, 0.0625, 0.0>;
//vector  gCellSize = <.0625, .0625, 0>;
//vector  gOffsetLeft = <0.484375, 0.46875, 0.0>;
//vector  gOffsetLeft = <.484375, .46875, 0>;
//vector  gOffsetRight = <0.453125, 0.46875, 0.0>;
//vector  gOffsetRight = <.453125, .46875, 0>;
//vector  gCellSizeHalf = <0.03125, 0.0625, 0.0>;
//vector  gCellSizeHalf = <.03125, .0625, 0>;


////////// DEFAULTS ////////////////////////////////////////
////////// DEFAULTS ////////////////////////////////////////


rotation gColor = <1.0, 1.0, 1.0, 1.0>; // <R, G, B, A>
integer gAlign = 0;         // Alignment: 0 = Left, 1 = Center, 2 = Right
integer gAlign = 0; // Alignment: 0 = Left, 1 = Center, 2 = Right
integer gTrim = TRUE;      // Trim whitespace from lines
integer gWrap = 2; // Wrapping: 0 = None, 1 = Char, 2 = Word
integer gWrap = 2;         // Wrapping: 0 = None, 1 = Char, 2 = Word
integer gNotify = FALSE; // Notify when drawing is completee
float  gWrapLimit = 0.75; // Percentage of display width before which word wrap is cancelled.
integer gTrim = TRUE; // Trim whitespace from lines
integer g2XKanji = FALSE;   // Use 2 faces for Kanji characters if TRUE, else just one.
integer gForce = FALSE;   // Ignore optimizations for drawing
integer gForce = FALSE;     // Ignore optimizations for drawing
float  gWrapLimit = 0.75; // Percentage of display width before which word wrap is cancelled.
integer gNotify = FALSE;   // Notify when drawing is complete
vector  gColor = <1, 1, 1>; // <R, G, B>
float  gAlpha = 1;


////////// END USER CONFIG /////////////////////////////////
////////// END USER CONFIG /////////////////////////////////
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integer gColPrims;
integer gColPrims;
integer gRows;
integer gRows;
vector gSpaceOffset;
integer gPos;
vector gBlankColor = <1.0, 1.0, 1.0>;
vector gSpaceOffset;


list    gTextLinks;
list    gTextLinks;
list    gRowLengths;
list    gRowLengths;


list    gColors = [
            "rand",        < 0,  0,  0>,
            "white",        < 1,  1,  1>,
            "black",        < 0,  0,  0>,
            "darkred",      <.5,  0,  0>,
            "darkgreen",    < 0, .5,  0>,
            "darkblue",    < 0,  0, .5>,
            "darkcyan",    < 0, .5, .5>,
            "darkmagenta",  <.5,  0, .5>,
            "darkyellow",  <.5, .5,  0>,
            "gray",        <.5, .5, .5>,
            "red",          < 1,  0,  0>,
            "green",        < 0,  1,  0>,
            "blue",        < 0,  0,  1>,
            "cyan",        < 0,  1,  1>,
            "magenta",      < 1,  0,  1>,
            "yellow",      < 1,  1,  0>,
            "silver",      <.75, .75, .75>];
string  gBlankUUID = "a2d3fdcf-febe-1481-09c7-a662f352f15e"; // Used for unrendered Unicode blocks.
string  gASCII_UUID; // Used to speed up rendering for ASCII, set to 0x00 code page below.
list    gCodePages;
list    gCodePages;
list    gCodePageUUIDs = [
list    gCodePageUUIDs = [
Line 221: Line 244:
             0xFE, "33d6e3ce-e1bb-816a-6133-1af0077a67b5",
             0xFE, "33d6e3ce-e1bb-816a-6133-1af0077a67b5",
             0xFF, "5709c611-6a62-244f-5963-dda110a59f04"];
             0xFF, "5709c611-6a62-244f-5963-dda110a59f04"];
string  gBlankUUID = "a2d3fdcf-febe-1481-09c7-a662f352f15e"; // Used for unrendered Unicode blocks.
string  gASCII_UUID; // Used to speed up rendering for ASCII, set to 0x00 code page above.
list    gColors = [
"rand", <0.0, 0.0, 0.0, 1.0>,
            "white",        <1.0, 1.0, 1.0, 1.0>,
            "black",        <0.0, 0.0, 0.0, 1.0>,
            "darkred",      <0.5, 0.0, 0.0, 1.0>,
            "darkgreen",    <0.0, 0.5, 0.0, 1.0>,
            "darkblue",    <0.0, 0.0, 0.5, 1.0>,
            "darkcyan",    <0.0, 0.5, 0.5, 1.0>,
            "darkmagenta",  <0.5, 0.0, 0.5, 1.0>,
            "darkyellow",  <0.5, 0.5, 0.0, 1.0>,
            "gray",        <0.5, 0.5, 0.5, 1.0>,
            "red",          <1.0, 0.0, 0.0, 1.0>,
            "green",        <0.0, 1.0, 0.0, 1.0>,
            "blue",        <0.0, 0.0, 1.0, 1.0>,
            "cyan",        <0.0, 1.0, 1.0, 1.0>,
            "magenta",      <1.0, 0.0, 1.0, 1.0>,
            "yellow",      <1.0, 1.0, 0.0, 1.0>,
            "silver",      <0.75, 0.75, 0.75, 1.0>];


Flush()
Flush()
{
{
     integer i = 0;  
     integer i;  
     gRowLengths = [];
     gRowLengths = [];
      
      
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     integer unicode;
     integer unicode;
     integer i;
     integer i;
    integer face;
     integer row_index = row * gColPrims;
     integer row_index = row * gColPrims;
     integer clear = (gForce || len < llList2Integer(gRowLengths, row)) && !direct; // Never clear if using direct access
     integer clear = (gForce || len < llList2Integer(gRowLengths, row)) && !direct; // Never clear if using direct access
    string  input;
    string  char;
     list    params;
     list    params;
      
      
Line 278: Line 278:
      
      
     // Clear out everything before first char
     // Clear out everything before first char
    // Clear routines don't really need to set PRIM_TEXTURE, but doing so prevents problems with
    // scripts using llSetAlpha to hide/show an entire linkset
     if (cursor > 0 && clear)
     if (cursor > 0 && clear)
     {
     {
         while (i < cursor)
         while (i < cursor)
         {
         {
             if (i & 7)
             face = i & 7;
             {
              
                // Clear out individual faces
            if (face) ++i;
                params += [ PRIM_TEXTURE, i & 7, gASCII_UUID, gCellSize, gSpaceOffset, 0.0, PRIM_COLOR, i & 7, gBlankColor, 0.0 ];
                ++i;
            }
             else
             else
             {
             {
            // New prim, issue PRIM_LINK_TARGET
                // If this is a new prim, set the target link #.
                 params += [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
                 params += [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
               
                // If the whole prim is to be blanked, do it with a single command
                 if (i + 7 < cursor)
                 if (i + 7 < cursor)
                 {
                 {
                     // Deal with whole prims when possible
                     face = ALL_SIDES;
                    params += [ PRIM_TEXTURE, ALL_SIDES, gASCII_UUID, gCellSize, gSpaceOffset, 0.0, PRIM_COLOR, ALL_SIDES, gBlankColor, 0.0 ];
                     i += 8;
                     i += 8;
                 }
                 }
                 else
                 else ++i;
                {
                    // Clear out individual faces
                    params += [ PRIM_TEXTURE, i & 7, gASCII_UUID, gCellSize, gSpaceOffset, 0.0, PRIM_COLOR, i & 7, gBlankColor, 0.0 ];
                    ++i;
                }
             }
             }
           
            params += [ PRIM_TEXTURE, face, gASCII_UUID, gCellSize, gSpaceOffset, 0 ]; //, PRIM_COLOR, face, <1, 1, 1>, 0 ];
         }
         }
          
          
         llSetLinkPrimitiveParamsFast(0, params);
        // Specify the first column position prim as the default.
         llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index), params);
         params = [];
         params = [];
     }
     }
      
      
     // Draw the line
     // Draw the line, making sure any fw_direct calls don't draw off the end.
     for (i = 0; i < len; ++i)
     i = 0;
   
    while (i < len)
     {
     {
         unicode = llList2Integer(chars, i);
         unicode = llList2Integer(chars, i);
         if (!(unicode & 0x30000000))
       
         if (unicode > 0)
         {
         {
            // Single cell mode
             params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
             params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
                         gCellSize, <(unicode & 0xF) * 0.0625 - gOffset.x, gOffset.y - (unicode >> 4 & 0xF) * 0.0625, 0.0>, 0.0,
                         gCellSize, <(unicode & 0xF) * .0625 - gOffset.x, gOffset.y - (unicode >> 4 & 0xF) * .0625, 0>, 0,
                         PRIM_COLOR, cursor & 7, <gColor.x, gColor.y, gColor.z>, gColor.s ];
                         PRIM_COLOR, cursor & 7, gColor, gAlpha ];
         }
         }
         else if (unicode & 0x10000000)
         else if (unicode & 0x10000000)
         {
         {
            // 2XKanji Left Half
             params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
             params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
                         gCellSizeHalf, <(unicode & 0xF) * 0.0625 - gOffsetLeft.x, gOffsetLeft.y - (unicode >> 4 & 0xF) * 0.0625, 0.0>, 0.0,
                         gCellSizeHalf, <(unicode & 0xF) * .0625 - gOffsetLeft.x, gOffsetLeft.y - (unicode >> 4 & 0xF) * .0625, 0>, 0,
                         PRIM_COLOR, cursor & 7, <gColor.x, gColor.y, gColor.z>, gColor.s ];
                         PRIM_COLOR, cursor & 7, gColor, gAlpha ];
         }
         }
         else
         else // if (unicode & 0x20000000)
         {
         {
            // 2XKanji Right Half
             params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
             params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
                         gCellSizeHalf, <(unicode & 0xF) * 0.0625 - gOffsetRight.x, gOffsetRight.y - (unicode >> 4 & 0xF) * 0.0625, 0.0>, 0.0,
                         gCellSizeHalf, <(unicode & 0xF) * .0625 - gOffsetRight.x, gOffsetRight.y - (unicode >> 4 & 0xF) * .0625, 0>, 0,
                         PRIM_COLOR, cursor & 7, <gColor.x, gColor.y, gColor.z>, gColor.s ];
                         PRIM_COLOR, cursor & 7, gColor, gAlpha ];
         }
         }
          
          
         if (cursor & 7 == 7)
        // Last face of the prim, or end of line, draw the faces. (End of row would fall on 7th face)
         if (cursor & 7 == 7 || ++i == len)
         {
         {
             llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index + (cursor >> 3)), params);
             llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index + (cursor >> 3)), params);
Line 343: Line 344:
          
          
         ++cursor;
         ++cursor;
        // Note the ++i is in the test above.
     }
     }
   
    // If there are any faces left to draw, set them.
    if (llGetListLength(params)) llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index + (cursor >> 3)), params);
    params = [];
      
      
     // Clear out everything after last char
     // Clear out everything after last char
Line 353: Line 351:
     {
     {
         i = cursor;
         i = cursor;
        if (i & 7) params = [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
          
          
         while (i < gCols)
         while (i < gCols)
         {
         {
             if (i & 7)
             face = i & 7;
             {
              
            // Clear out individual faces
            if (face) ++i;
                params += [ PRIM_TEXTURE, i & 7, gASCII_UUID, gCellSize, gSpaceOffset, 0.0, PRIM_COLOR, i & 7, gBlankColor, 0.0 ];
                ++i;
            }
             else
             else
             {
             {
            // New prim, issue PRIM_LINK_TARGET
                // If this is a new prim, set the target link #.
                 params += [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
                 params += [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
                 if (i + 7 < gCols)
               
                // If the whole prim is to be blanked, do it with a single command
                 if (i + 7 < cursor)
                 {
                 {
                     // Deal with whole prims when possible
                     face = ALL_SIDES;
                    params += [ PRIM_TEXTURE, ALL_SIDES, gASCII_UUID, gCellSize, gSpaceOffset, 0.0, PRIM_COLOR, ALL_SIDES, gBlankColor, 0.0 ];
                     i += 8;
                     i += 8;
                 }
                 }
                 else
                 else ++i;
                {
                    // Clear out individual faces
                    params += [ PRIM_TEXTURE, i & 7, gASCII_UUID, gCellSize, gSpaceOffset, 0.0, PRIM_COLOR, i & 7, gBlankColor, 0.0 ];
                    ++i;
                }
             }
             }
           
            params += [ PRIM_TEXTURE, face, gASCII_UUID, gCellSize, gSpaceOffset, 0 ]; //, PRIM_COLOR, face, <1, 1, 1>, 0 ];
         }
         }
          
          
         llSetLinkPrimitiveParamsFast(0, params);
        // Specify the cursor position prim as the default.
    }
         llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index + (cursor >> 3)), params);
  }
}
}


list UTFtoInt(string line)
// If line is one long paragraph to be displayed, break it up into row size chunks
// so we don't have to decode the whole paragraph before starting to render.
// This is slower than decoding the entire line in one pass, but uses less memory.
// Pad it a bit, so we don't end up with an empty chars list before the line is truly done rendering.
list UTFtoInt(list chars, string line, integer pos)
{
{
     integer i;
     integer len = llStringLength(line);
    integer unicode;
     string  input;
     string  input;
     integer len = llStringLength(line);
     //integer long1;
     list    chars;
    integer long2;
    integer char;
     integer colmax = gCols + 2;
      
      
     for (i = 0; i < len; ++i)
     while (pos < len && llGetListLength(chars) < colmax)
     {
     {
         // Unicode Decoder: http://wiki.secondlife.com/wiki/UTF-8  
         // Unicode Decoder: http://wiki.secondlife.com/wiki/UTF-8  
         unicode = llBase64ToInteger(llStringToBase64(input = llGetSubString(line, i, i)));
         char = llBase64ToInteger(llStringToBase64(input = llGetSubString(line, pos, pos)));
         if(unicode & 0x80000000) //multibyte, continuing to use base64 is impractical because it requires smart shifting.
       
         if (char > 0) chars += char >> 24;
        else
         {
         {
             unicode = (  (  0x0000003f & unicode       ) |
             // Multibyte, use smart shifting. Skip decoding unicode greater than 0x3FFFF for speed
                          (( 0x00003f00 & unicode) >> 2 ) |
            long2 =  (integer)("0x"+llGetSubString(input = (string)llParseString2List(llEscapeURL(input),(list)"%",[]),-8,-1));
                          (( 0x003f0000 & unicode) >> 4 ) |
            //long1 = (integer)("0x"+llDeleteSubString(input,-8,-1));
                          (( 0x3f000000 & (unicode = (integer)("0x"+llGetSubString(input,-8,-1)))) >> 6 ) |
            char =  (  (  0x0000003f & long2       )
                          (( 0x0000003f & unicode) << 24) |
                      | (( 0x00003f00 & long2) >> 2 )  
                          (( 0x00000100 & (unicode = (integer)("0x"+llDeleteSubString(input = (string)llParseString2List(llEscapeURL(input),["%"],[]),-8,-1)))) << 22)
                      | (( 0x003f0000 & long2) >> 4 )  
                      ) & ( 0x7FFFFFFF >> (5 * ((integer)(llLog(~unicode) / 0.69314718055994530941723212145818) - 25)));
                    //| (( 0x3f000000 & long2) >> 6 )
                    //| (( 0x0000003f & long1) << 24)
                    //| (( 0x00000100 & long1) << 22)
                    ) & (0x7FFFFFFF >> (5 * ((integer)(llLog(~char) / 0.69314718055994530941723212145818) - 25)));
              
              
             if (unicode > 0x2FFF && unicode < 0xA000) chars += [unicode | 0x10000000, unicode | 0x20000000];
            // Mark 2x characters as negative by setting top bit. Also set a bit to indicate left/right part of char.
             else chars += unicode;
             if (g2XKanji && char > 0x2FFF && char < 0xA000) chars += [char | 0x90000000, char | 0xA0000000];
        }
             else chars += char;
        else
        {
            chars += unicode >> 24;
         }
         }
       
        ++pos;
     }
     }
      
      
    gPos =  pos;
     return chars;
     return chars;
}
}


list ListTrim(list chars, integer type)
{
if (type & 0x1)
{
while (llGetListLength(chars) && llList2Integer(chars,  0) <= 32) llDeleteSubList(chars,  0,  0);
}
if (type & 0x2)
{
while (llGetListLength(chars) && llList2Integer(chars, -1) <= 32) llDeleteSubList(chars, -1, -1);
}
return chars;
}
Draw(string text)
Draw(string text)
{
{
     integer row;
    integer total_lines = llGetListLength(llParseStringKeepNulls(text, (list)"\n", []));
     list    lines;
    string  line;
     integer row = 0;
     integer line_num = 0;
     list    chars;
     list    chars;
     integer char;
     integer char;
     integer line_num;
     integer pos_end;
     integer pos;
     integer pos_out;
    list    out;
      
      
    lines = llParseStringKeepNulls(text, [ "\n", "<br>" ], []);
    line_num = 0;
    row = 0;
     do
     do
     {
     {
         // For future right to left language support, we could test
         // Re-parsing the text for each line is a tradeoff between speed and memory usage.
        // last char of a line to see if it is in a RTL unicode block,
         if (gTrim)  line = llStringTrim(llList2String(llParseStringKeepNulls(text, (list)"\n", []), line_num), STRING_TRIM);
        // and then use a different do block to work through them right to left.
         else        line =              llList2String(llParseStringKeepNulls(text, (list)"\n", []), line_num);
         // It would be especially important when splitting lines to display
         // them in the correct order.
          
          
         if (gTrim) chars = ListTrim(UTFtoInt(llList2String(lines, line_num)), STRING_TRIM);
         chars = [];
         else chars = UTFtoInt(llList2String(lines, line_num));
         gPos = 0;
          
          
         do
         do
         {
         {
             if (llGetListLength(chars) <= gCols)
            chars = UTFtoInt(chars, line, gPos);
           
             if (llGetListLength(chars) <= gCols || gWrap == 0)
             {
             {
                 Render(chars, 0, row, FALSE);
                 Render(chars, 0, row, FALSE);
               
                // Done with this line.
                 chars = [];
                 chars = [];
             }
             }
             else if (llList2Integer(chars, gCols) == 20 || gWrap < 2)
             else if (llList2Integer(chars, gCols) == 32 || gWrap == 1)
             {
             {
                 if (gTrim)  Render(ListTrim(llList2List(chars, 0, gCols - 1), STRING_TRIM), 0, row, FALSE);
                 Render(llList2List(chars, 0, gCols - 1), 0, row, FALSE);
                else        Render(llList2List(chars, 0, gCols - 1), 0, row, FALSE);
                  
                  
                 if (gWrap)
                 // If we got here with gWrap = 2, then skip the space
                {
                chars = llDeleteSubList(chars, 0, gCols - (gWrap == 1));
                    // If we got here with wrap = 2, then there was a space, and we want to skip it.
                    chars = llList2List(chars, gCols + (gWrap == 2), -1);
                }
                else
                {
                    chars = [];
                }
             }
             }
             else
             else
             {
             {
                 pos = gCols - 1;
                 // Handle finding a word wrap location.
                 out = [];
                pos_end = gCols - 1;
                 pos_out = 0;
                  
                  
                 do
                 do
                 {
                 {
                     char = llList2Integer(chars, pos) & 0xFFFF;
                     char = llList2Integer(chars, pos_end);
                      
                      
                     if (char == 32)
                    // Test for space
                    {
                     if     (char == 32) pos_out = pos_end - 1;
                        out  = llList2List(chars, 0, pos - 1);
                     // Test for hyphen. Could also test for Japanese: "、" and "。", Hebrew: "־‬", Armenian: "֊"
                        chars = llList2List(chars, pos + 1, -1);
                     else if (char == 45) pos_out = pos_end;
                     }
                     // Test for falling below wrap limit.
                    else if (char == 45) // Japanese: "、" and "。", Hebrew uses "־‬", Armenian uses "֊"
                     else if (pos_end < gCols * gWrapLimit)
                     {
                        out  = llList2List(chars, 0, pos);
                        chars = llList2List(chars, pos + 1, -1);
                     }
                     else if (pos < gCols * gWrapLimit)
                     {
                     {
                         // Test to see if char is second half of split char.
                         // Test to see if last char is first half of split Kanji char.
                         if (llList2Integer(chars, gCols - 1) & 0x10000000)
                         if (llList2Integer(chars, gCols - 1) & 0x10000000) pos_out = gCols - 2;
                        {
                         else pos_out = gCols - 1;
                            out  = llList2List(chars, 0, gCols - 2);
                            chars = llList2List(chars, gCols - 1, -1);
                        }
                         else
                        {
                            out  = llList2List(chars, 0, gCols - 1);
                            chars = llList2List(chars, gCols, -1);
                        }
                     }
                     }
                 }
                 }
                 while (!llGetListLength(out) && --pos >= 0);
                 while (!pos_out && --pos_end >= 0);
               
                Render(llList2List(chars, 0, pos_out), 0, row, FALSE);
                  
                  
                 if (gTrim)  Render(ListTrim(out, STRING_TRIM), 0, row, FALSE);
                 // If we wrapped on a space, delete it too, so it doesn't render on next line.
                 else        Render(out, 0, row, FALSE);
                 chars = llDeleteSubList(chars, 0, pos_out + (char == 32));
             }
             }
           
            ++row;
         }
         }
         while (llGetListLength(chars) && row < gRows);
         while (llGetListLength(chars) && ++row < gRows);
     }
     }
     while (++line_num < llGetListLength(lines));
     while (++line_num < total_lines && row < gRows);
      
      
     // Blank out any remaining display lines
     // Blank out any remaining display lines
Line 552: Line 520:
         do
         do
         {
         {
             items = llParseString2List(llGetLinkName(link), [ ":" ], []);
             items = llParseString2List(llGetLinkName(link), (list)":", []);
             if (llList2String(items, 0) == "FURWARE text mesh")
             if (llList2String(items, 0) == "FURWARE text mesh")
             {
             {
Line 562: Line 530:
                 else
                 else
                 {
                 {
                     llOwnerSay("Only 8 face prims are supported.");
                     llOwnerSay("Only 8 face text prims supported");
                     return;
                     return;
                 }
                 }
Line 585: Line 553:
         do
         do
         {
         {
             items = llParseString2List(llGetLinkName(link), [ ":" ], []);
             items = llParseString2List(llGetLinkName(link), (list)":", []);
             if (llList2String(items, 0) == "FURWARE text mesh")
             if (llList2String(items, 0) == "FURWARE text mesh")
             {
             {
                 i = llList2Integer(items, 2) * col + llList2Integer(items, 3);
                 i = llList2Integer(items, 2) * col + llList2Integer(items, 3);
                 gTextLinks = llListReplaceList(gTextLinks, [ link ], i, i);
                 gTextLinks = llListReplaceList(gTextLinks, (list)link, i, i);
             }
             }
         }
         }
Line 596: Line 564:
         for (i = 0; i < 256; ++i)
         for (i = 0; i < 256; ++i)
         {
         {
             j = llListFindList(gCodePageUUIDs, [ i ]);
             j = llListFindList(gCodePageUUIDs, (list)i);
             if (~j) gCodePages += llList2String(gCodePageUUIDs, j + 1);
             if (~j) gCodePages += llList2String(gCodePageUUIDs, j + 1);
             else    gCodePages += gBlankUUID;
             else    gCodePages += gBlankUUID;
         }
         }
       
         gCodePageUUIDs = []; // No longer needed, empty it to free up memory?
         gCodePageUUIDs = []; // No longer needed, empty it to free up memory?
         gASCII_UUID = llList2String(gCodePages, 0);
         gASCII_UUID = llList2String(gCodePages, 0);
         gSpaceOffset = <-gOffset.x, gOffset.y - 2 * 0.0625, 0.0>;
         gSpaceOffset = <-gOffset.x, gOffset.y - 2 * .0625, 0>;
       
         Flush(); // Invalidate the whole display
         Flush(); // Invalidate the whole display
         Draw("");
         Draw("");
Line 614: Line 583:
         if (llGetSubString(id, 0, 2) != "fw_") return;
         if (llGetSubString(id, 0, 2) != "fw_") return;
          
          
         list    commands = llParseString2List(id, [ ":" ], []);
         list    commands = llParseString2List(llToLower(id), (list)":", []);
         string  command  = llToLower(llStringTrim(llList2String(commands, 0), STRING_TRIM));
         string  command  = llStringTrim(llList2String(commands, 0), STRING_TRIM);
         list    options;
         list    options;
         list    params;
         list    params;
Line 629: Line 598:
         else if (command == "fw_direct")
         else if (command == "fw_direct")
         {
         {
             Render(UTFtoInt(str), llList2Integer(commands, 1),llList2Integer(commands, 2), TRUE);
             Render(UTFtoInt([], str, 0), llList2Integer(commands, 1), llList2Integer(commands, 2), TRUE);
         }
         }
         else if (command == "fw_conf" || command == "fw_defaultconf")
         else if (command == "fw_conf" || command == "fw_defaultconf")
         {
         {
             options = llParseString2List(str, [ ";" ], []);
             options = llParseString2List(llToLower(str), (list)";", []);
              
              
             for(i = 0; i < llGetListLength(options); ++i)
             for(i = 0; i < llGetListLength(options); ++i)
             {
             {
                 params = llParseString2List(llList2String(options, i), [ "=" ], []);
                 params = llParseString2List(llList2String(options, i), (list)"=", []);
                  
                  
                 if (llGetListLength(params) > 1)
                 if (llGetListLength(params) > 1)
                 {
                 {
                     param = llToLower(llStringTrim(llList2String(params, 0), STRING_TRIM));
                     param =   llStringTrim(llList2String(params, 0), STRING_TRIM);
                     value_lc = llToLower(llStringTrim(llList2String(params, 1), STRING_TRIM));
                     value_lc = llStringTrim(llList2String(params, 1), STRING_TRIM);
                      
                      
                     if (param == "c")
                     if (param == "c")
                     {
                     {
                         pos = llListFindList(gColors, [ value_lc ]);
                         pos = llListFindList(gColors, (list)value_lc);
                        gAlpha = 1;
                          
                          
                         if (pos == 0)
                         if     (pos == 0)
                         {
                         {
                        gColor = <llFrand(1.0), llFrand(1.0), llFrand(1.0), 1.0>;
                            gColor = <llFrand(1), llFrand(1), llFrand(1)>;
                         }
                         }
                         else if (pos % 2 == 0)
                         else if (pos > 0)
                         {
                         {
                             gColor = llList2Rot(gColors, pos + 1);
                             gColor = llList2Vector(gColors, pos + 1);
                         }
                         }
                         else
                         else
                         {
                         {
                             value_lc = "<" + value_lc + ">";
                             value_lc = "<" + value_lc + ">";
                             gColor = (rotation)value_lc;
                             rotation color = (rotation)value_lc;
                             if (gColor == ZERO_ROTATION)
                           
                             if (color == ZERO_ROTATION)
                            {
                                gColor = (vector)value_lc;
                                gAlpha = 1;
                            }
                            else
                             {
                             {
                                vector tmp = (vector)value_lc;
                                 gColor = <color.x, color.y, color.z>;
                                 gColor = <tmp.x, tmp.y, tmp.z, 1.0>;
                                gAlpha = color.s;
                             }
                             }
                        }
                    }
                    else if (param == "w")
                    {
                        pos = llListFindList([ "none", "char", "word" ], [ value_lc ]);
                        if (~pos)
                        {
                            if (gWrap != pos) Flush();
                            gWrap = pos;
                         }
                         }
                     }
                     }
                     else if (param == "a")
                     else if (param == "a")
                     {
                     {
                         pos = llListFindList([ "left", "center", "right" ], [ value_lc ]);
                         pos = llListFindList([ "left", "center", "right" ], (list)value_lc);
                         if (~pos)
                         if (~pos)
                         {
                         {
Line 684: Line 651:
                             gAlign = pos;
                             gAlign = pos;
                         }
                         }
                    }
                    else if (param == "w")
                    {
                        pos = llListFindList([ "none", "char", "word" ], (list)value_lc);
                        if (~pos) gWrap = pos;
                     }
                     }
                     else if (param == "t")
                     else if (param == "t")
                     {
                     {
                         pos = llListFindList([ "off", "on" ], [ value_lc ]);
                         gTrim = (value_lc == "on");
                        if (~pos)
                    }
                        {
                    else if (param == "k")
                            if (gTrim != pos) Flush();
                    {
                            gTrim = pos;
                        g2XKanji = (value_lc == "on");
                        }
                     }
                     }
                     else if (param == "force")
                     else if (param == "force")
                     {
                     {
                         pos = llListFindList([ "off", "on" ], [ value_lc ]);
                         gForce = (value_lc == "on");
                        if (~pos) gForce = pos;
                     }
                     }
                 } // more than 1 param
                 } // more than 1 param

Latest revision as of 11:50, 11 November 2020

HexText Unicode Display (2XKanji). Two prim faces for Kanji/Katakana, 1 prim face for all other characters. 

////////// DESCRIPTION /////////////////////////////////////
//                                                        //
//  HexText 1.1 Unicode Display System by Hexadeci Mole   //
//  Optionally uses 2 faces for Kanji characters          //
//  Thanks to Ochi Wolfe for the FURWARE text toolset     //
//                                                        //
////////////////////////////////////////////////////////////

////////// DOCUMENTATION ///////////////////////////////////
//                                                        //
//  Documentation is available at:                        //
//  http://wiki.secondlife.com/wiki/HexText               //
//                                                        //
////////////////////////////////////////////////////////////

////////// LICENSE /////////////////////////////////////////

/*
MIT License
Copyright (c) 2018-2020 Hexadeci Mole, HexText
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

////////// CONSTANTS ///////////////////////////////////////

// Numerically accurate for Furware faces, but there can be a bit of character cell bleed
vector  gOffset = <.53125, .0123, 0>;
vector  gCellSize = <.0625, .0625, 0>;
vector  gOffsetLeft = <.015625, .0123, 0>;
vector  gOffsetRight = <-.015625, .0123, 0>;
vector  gCellSizeHalf = <.03125, .0625, 0>;

// Numerically accurate for normal UV faces, but there can be a bit of character cell bleed
//vector  gOffset = <.46875, .46875, 0>;
//vector  gCellSize = <.0625, .0625, 0>;
//vector  gOffsetLeft = <.484375, .46875, 0>;
//vector  gOffsetRight = <.453125, .46875, 0>;
//vector  gCellSizeHalf = <.03125, .0625, 0>;

////////// DEFAULTS ////////////////////////////////////////

integer gAlign = 0;         // Alignment: 0 = Left, 1 = Center, 2 = Right
integer gTrim = TRUE;       // Trim whitespace from lines
integer gWrap = 2;          // Wrapping: 0 = None, 1 = Char, 2 = Word
float   gWrapLimit = 0.75;  // Percentage of display width before which word wrap is cancelled.
integer g2XKanji = FALSE;   // Use 2 faces for Kanji characters if TRUE, else just one.
integer gForce = FALSE;     // Ignore optimizations for drawing
integer gNotify = FALSE;    // Notify when drawing is complete
vector  gColor = <1, 1, 1>; // <R, G, B>
float   gAlpha = 1;

////////// END USER CONFIG /////////////////////////////////

integer gPrimCount;
integer gCols;
integer gColPrims;
integer gRows;
integer gPos;
vector  gSpaceOffset;

list    gTextLinks;
list    gRowLengths;

list    gColors = [
            "rand",         < 0,  0,  0>,
            "white",        < 1,  1,  1>,
            "black",        < 0,  0,  0>,
            "darkred",      <.5,  0,  0>,
            "darkgreen",    < 0, .5,  0>,
            "darkblue",     < 0,  0, .5>,
            "darkcyan",     < 0, .5, .5>,
            "darkmagenta",  <.5,  0, .5>,
            "darkyellow",   <.5, .5,  0>,
            "gray",         <.5, .5, .5>,
            "red",          < 1,  0,  0>,
            "green",        < 0,  1,  0>,
            "blue",         < 0,  0,  1>,
            "cyan",         < 0,  1,  1>,
            "magenta",      < 1,  0,  1>,
            "yellow",       < 1,  1,  0>,
            "silver",       <.75, .75, .75>];

string  gBlankUUID = "a2d3fdcf-febe-1481-09c7-a662f352f15e"; // Used for unrendered Unicode blocks.
string  gASCII_UUID; // Used to speed up rendering for ASCII, set to 0x00 code page below.
list    gCodePages;
list    gCodePageUUIDs = [
            0x00, "27e9e604-b315-454f-770e-cf5dc6333879",
            0x01, "fdcf478b-302d-70f8-fb72-c2cbf403d242",
            0x02, "10b6e068-571f-c912-1177-c25533b5350b",
            0x03, "ed4b350a-d0cb-68fa-e01c-7a4662837ad6",
            0x04, "090834da-5503-aeb9-8f42-f979c76a0f35",
            0x05, "d2378c82-ce3a-19c2-a25c-ea84b5d87b39",
            0x06, "93917f55-2427-365b-6d81-46871d3eb8d7",
            0x0E, "deadeda9-4676-9f75-b11d-0c1c4cc320af",
            0x10, "03088af6-b6e2-7a93-3ac4-b275b650a12b",
            0x14, "92c4d466-02c3-6063-440d-686a17287ef3",
            0x15, "96424a86-271d-2d64-4807-d6710e27afd8",
            0x16, "b7f7a0e7-e528-a504-2c52-171ea216982b",
            0x1D, "756ad03c-2e87-1bd2-8265-edf77f9493e6",
            0x1E, "6ba77713-1017-72d5-96c0-9b9305659e1e",
            0x1F, "047f7d75-cfcd-5515-227f-668554d7427d",
            0x20, "f40f5d7d-58e5-68e3-5c21-ba2a0f18e0a9",
            0x21, "6fce7405-d606-bb55-8ddd-f32f444b78da",
            0x22, "bb7bea3c-9044-e505-41d6-afafd6a9f5de",
            0x23, "5ca29772-2722-011f-8e04-3bfe1e713864",
            0x24, "0dede3b3-e632-8059-1a33-125f3e100e52",
            0x25, "87a27d99-2e97-2613-c47b-63806981b6e5",
            0x26, "8c382389-5701-4d3a-62d2-6e8720dc665f",
            0x27, "c76498fc-03a3-f598-fa7d-24b4876f0c26",
            0x2C, "7a702e38-9304-cbde-e5ab-a60a020f1d1d",
            0x30, "bbed1e3f-f89b-49c4-999c-80cc352189f6",
            0x31, "504c15c1-e9b5-8691-8b9a-574b0eb16633",
            0x32, "3f47af69-cb2e-8e85-d2d9-09c869822419",
            0x33, "eb7c701e-ac4a-9c2b-19a9-afc7f08c4675",
            0x34, "2cf174bd-0deb-2970-d63d-e359f7512521",
            0x35, "1f9bb5a7-2f4a-15e3-8d6d-504cd0d250de",
            0x36, "99d49a10-42bb-45a9-03ed-c81dea3f2d12",
            0x37, "441e23c4-0608-59fe-7e56-99e53f1c71ba",
            0x38, "9582249b-5370-dd77-0925-c97e72f6d8e9",
            0x39, "3c79958e-bdf2-73cd-2e6c-f2acc297bfcd",
            0x3A, "2286bbb7-f805-690f-0b0b-0593c12e2f2a",
            0x3B, "a2e5a0d0-f5aa-913f-1c00-f641f2ca5091",
            0x3C, "955e9609-afde-ebb7-a5e1-ddae46455090",
            0x3D, "431e9f87-41a2-a7f3-22ad-c17b4ec5a237",
            0x3E, "b5db2e3b-2271-a0bd-00d6-8b40812097ac",
            0x3F, "76f2d1fe-826d-f30a-c1af-1b09387c2936",
            0x40, "f90e3a5e-9404-0729-0ddc-46f52fc8e919",
            0x41, "70a5bc82-7abb-763b-fd46-12c9e4c60a84",
            0x42, "1b4af3ed-1ca2-54da-2f13-2c378476c50b",
            0x43, "33c44a35-5bdd-3cf0-9e20-bbebc4390ae7",
            0x44, "78468268-b9dc-57f4-554a-097341f9e37f",
            0x45, "be4f77d7-e86d-9c19-50f4-ff70fa0bbcdd",
            0x46, "cecc557a-e740-3468-787a-a8efc50afb82",
            0x47, "04d78b83-693d-8c16-4a1f-634c5dd6615a",
            0x48, "7e01d0db-b456-3cb8-b97c-f688dc27f705",
            0x49, "55d04868-f003-4de0-5237-a04862cc4697",
            0x4A, "afa697ab-2885-8d7c-f59b-b0f48b94941f",
            0x4B, "07f7427f-fc20-9d10-7ffd-556fb3c480a9",
            0x4C, "ff6b4d03-ca92-e7d4-46e9-9121352dec6e",
            0x4D, "c41ac88b-4e71-d997-cd33-fd1d81ca992c",
            0x4E, "c2309d45-43b7-15f4-e482-886dbf9b8419",
            0x4F, "3190730d-de06-ea8a-3a5d-757b5ef9c04d",
            0x50, "dcdf69a0-83c0-68d3-7883-9d6b142ab522",
            0x51, "8214ba5e-af73-0ed3-84f6-1251d668ce09",
            0x52, "0aa80f45-305c-a8b7-fdc5-c49cdb837d43",
            0x53, "261cb0e8-a2d7-b90d-734f-409064920bec",
            0x54, "0ad4e700-c8db-dc9f-6dea-45d126ce1781",
            0x55, "81f351a3-4a90-e052-22d7-daa869ee3656",
            0x56, "7df297e5-79cd-7036-9443-f0f8a9fa7e8f",
            0x57, "e06b0624-4363-2202-96b9-47b1321abafe",
            0x58, "9dfa4ed2-5146-0c20-4c1b-d67611591a2d",
            0x59, "7a0d489d-bf9c-4e76-bc30-65f9606a77a9",
            0x5A, "ab196901-2d9c-23d5-a10a-e28fd7b784a9",
            0x5B, "c569ab67-1c18-307a-0d57-bafa4e0320e7",
            0x5C, "cc92b193-1ed3-72ed-428f-de27c971e53e",
            0x5D, "3d9233a1-acbf-e28b-bfd9-db9d080daaaf",
            0x5E, "7da71ac2-af51-48b8-5207-70991b2b172b",
            0x5F, "cf34309e-b3e7-9777-6b04-2a64893ccc83",
            0x60, "6a449a86-c107-d264-ff67-8241347d865d",
            0x61, "e4f9c21d-8508-e64b-d390-3c85f06dea17",
            0x62, "c3a3ce13-6dec-8e81-d2a4-3125559bb782",
            0x63, "52bff60e-65c7-a540-ff35-95c5a8220f81",
            0x64, "9aeca54a-3ed9-6692-098b-2ec3da979cb3",
            0x65, "20c82000-a1d8-9cc3-bf40-e4b4e2472018",
            0x66, "58ae46d4-2e5b-cacb-101a-6cef0987d75a",
            0x67, "cf8f267d-6b6f-fd88-8588-48e886dc3010",
            0x68, "e603db4d-1e85-516a-b612-4b1b748fc3e2",
            0x69, "4122d3ed-68b9-2eba-dd7d-b8a0f59126a2",
            0x6A, "6a4425cf-46c7-1dd3-1e15-bc58b6e63522",
            0x6B, "3402c9d6-b776-2f3f-7d8d-855cd9a7f7e7",
            0x6C, "09710c77-9db2-65ff-db0b-400f42b55671",
            0x6D, "b0fca79a-5060-324f-f4f5-71cffac18e1f",
            0x6E, "cd8d52f4-32d1-4ea3-6908-8ed9204d4f8f",
            0x6F, "90e38c28-d6a9-fca4-0e39-b24adf825ba8",
            0x70, "b25aadb4-f64a-6420-b479-277edea2a169",
            0x71, "ced5dcf5-58a8-d7b3-0da8-cb10f9b708f8",
            0x72, "515461e6-1aca-5056-d289-705a1c070ef4",
            0x73, "226100cc-10ce-8cb7-f7a8-d13873493374",
            0x74, "37d54277-71b2-dd6f-ebff-666aa4c6efd0",
            0x75, "38b2a124-4ef3-9dc0-e4c4-b4d1ee25811a",
            0x76, "d8c218ff-97b0-f320-7f2e-ba74fcd3e19c",
            0x77, "8d68593e-90fb-c442-b320-c6e99cd831b2",
            0x78, "a1b3619d-eb8f-03c2-e219-375ab2e978c3",
            0x79, "b25f989c-ea35-3398-7809-d0e47415e1ec",
            0x7A, "b3d35e10-70f0-4004-3d4f-8987e77c3ce6",
            0x7B, "6ff601ba-64fb-f61b-c11a-95c4e26cc3b5",
            0x7C, "5c5508de-ca4a-1a85-3662-7767af1d45f1",
            0x7D, "f334c84a-8a89-4dca-1a0a-3f57869b383a",
            0x7E, "6d4992fc-1891-7bb8-e8c8-080b0c7f0f53",
            0x7F, "1c087c0c-2f44-70c6-f386-9fff328645af",
            0x80, "ae6217d8-a650-393d-4c12-244924e50091",
            0x81, "5bac0887-f686-1486-123d-c9cc203a97d7",
            0x82, "4c00bbf3-25d7-c781-ad69-f2c8b151844d",
            0x83, "02146f13-b5a4-34d4-eae3-b87e8a622446",
            0x84, "149a8ebe-fa15-b985-b6ca-4b4f8c8dcbc6",
            0x85, "899f9215-92ca-39bc-b157-46b4e56ffee2",
            0x86, "07c72032-8ba0-58b5-7dbb-1e26d4a9c29d",
            0x87, "021ca04d-5893-f615-9357-5ec1fd1e0985",
            0x88, "f13f10ab-8526-a061-b90e-38b0f13876a9",
            0x89, "9d8895f4-1080-69f7-0f78-cc7c42068402",
            0x8A, "35363fbc-f952-3833-f2b8-ac1685decb41",
            0x8B, "ece7161f-2360-e294-55f8-18593cfe268e",
            0x8C, "b199f897-ce70-3715-05e0-a58c234e21e7",
            0x8D, "066676e6-5640-399e-0191-b061e56a9277",
            0x8E, "b5e67788-bd9b-9603-9f5f-8c8fc90dbcdf",
            0x8F, "180bb534-f8fb-b8cd-fcb9-938eb41876f6",
            0x90, "42d6a5c7-3537-0e6a-ceb1-c7ec1408843e",
            0x91, "28d50a1f-aae9-e9ae-df70-dad6d0dd494b",
            0x92, "4638765a-bf63-95fb-dfef-df43e3fd6b0e",
            0x93, "c183e0ac-c3bf-cbcc-79d8-2877e5aeaa87",
            0x94, "db5df7a0-b48e-28ac-e24a-0222a3cda022",
            0x95, "3f5e9f00-86bc-b5a4-8930-61a8c2f94dbc",
            0x96, "d92d47bf-0582-fa1c-5e62-3ef591f2a12b",
            0x97, "a2603a86-209d-d36c-2df8-03ad69418439",
            0x98, "d1b3c91d-3d5a-53f8-9fdc-149fb77cfdfc",
            0x99, "c4a69385-91f1-375c-b9d6-86eb1b8ed537",
            0x9A, "4c9dd325-deb5-b5b3-7b94-c6dd0aec5a99",
            0x9B, "8ba75a75-1421-bc42-6a41-3cef5ff131ad",
            0x9C, "33aecc7d-ab14-c2d8-1428-1379a73a69a2",
            0x9D, "dbb8d20e-e182-67ec-955d-33de256e6241",
            0x9E, "9dd876bf-f802-4cd6-5395-ba00d5e1b3b2",
            0x9F, "a60a2bea-4e28-78a1-d9da-887b60a219ef",
            0xA6, "24f26d30-c396-b3fb-42b6-f3ba01b7ed87",
            0xA7, "39102d6d-227b-86f1-e44b-324a7bf58bf4",
            0xF8, "21ad1fb8-214f-c9db-74d5-317e692d7bb7",
            0xFE, "33d6e3ce-e1bb-816a-6133-1af0077a67b5",
            0xFF, "5709c611-6a62-244f-5963-dda110a59f04"];

Flush()
{
    integer i; 
    gRowLengths = [];
    
    while (i++ < gRows) gRowLengths += 0xFFFF;
}

Render(list chars, integer col, integer row, integer direct)
{
    if (col < 0 || col >= gCols || row < 0 || row >= gRows) return;
    
    integer len = llGetListLength(chars);
    integer cursor;
    integer unicode;
    integer i;
    integer face;
    integer row_index = row * gColPrims;
    integer clear = (gForce || len < llList2Integer(gRowLengths, row)) && !direct; // Never clear if using direct access
    list    params;
    
    if      (direct)        cursor =  col;
    else if (gAlign == 0 || len == 0) cursor =  0;
    else if (gAlign == 1)   cursor = (gCols - len) / 2;
    else                    cursor =  gCols - len;
    
    if (cursor + len > gCols) len = gCols - cursor;
    
    // Using direct invalidates optimization for this row.
    if (direct) gRowLengths = llListReplaceList(gRowLengths, [0xFFFF], row, row);
    else        gRowLengths = llListReplaceList(gRowLengths, [len], row, row);
    
    // Clear out everything before first char
    if (cursor > 0 && clear)
    {
        while (i < cursor)
        {
            face = i & 7;
            
            if (face) ++i;
            else
            {
                // If this is a new prim, set the target link #.
                params += [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
                
                // If the whole prim is to be blanked, do it with a single command
                if (i + 7 < cursor)
                {
                    face = ALL_SIDES;
                    i += 8;
                }
                else ++i;
            }
            
            params += [ PRIM_TEXTURE, face, gASCII_UUID, gCellSize, gSpaceOffset, 0 ]; //, PRIM_COLOR, face, <1, 1, 1>, 0 ];
        }
        
        // Specify the first column position prim as the default.
        llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index), params);
        params = [];
    }
    
    // Draw the line, making sure any fw_direct calls don't draw off the end.
    i = 0;
    
    while (i < len)
    {
        unicode = llList2Integer(chars, i);
        
        if (unicode > 0)
        {
            // Single cell mode
            params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
                        gCellSize, <(unicode & 0xF) * .0625 - gOffset.x, gOffset.y - (unicode >> 4 & 0xF) * .0625, 0>, 0,
                        PRIM_COLOR, cursor & 7, gColor, gAlpha ];
        }
        else if (unicode & 0x10000000)
        {
            // 2XKanji Left Half
            params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
                        gCellSizeHalf, <(unicode & 0xF) * .0625 - gOffsetLeft.x, gOffsetLeft.y - (unicode >> 4 & 0xF) * .0625, 0>, 0,
                        PRIM_COLOR, cursor & 7, gColor, gAlpha ];
        }
        else // if (unicode & 0x20000000)
        {
            // 2XKanji Right Half
            params += [ PRIM_TEXTURE, cursor & 7, llList2String(gCodePages, unicode >> 8 & 0xFF),
                        gCellSizeHalf, <(unicode & 0xF) * .0625 - gOffsetRight.x, gOffsetRight.y - (unicode >> 4 & 0xF) * .0625, 0>, 0,
                        PRIM_COLOR, cursor & 7, gColor, gAlpha ];
        }
        
        // Last face of the prim, or end of line, draw the faces. (End of row would fall on 7th face)
        if (cursor & 7 == 7 || ++i == len)
        {
            llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index + (cursor >> 3)), params);
            params = [];
        }
        
        ++cursor;
        // Note the ++i is in the test above.
    }
    
    // Clear out everything after last char
    if (cursor < gCols && clear)
    {
        i = cursor;
        
        while (i < gCols)
        {
            face = i & 7;
            
            if (face) ++i;
            else
            {
                // If this is a new prim, set the target link #.
                params += [ PRIM_LINK_TARGET, llList2Integer(gTextLinks, row_index + (i >> 3)) ];
                
                // If the whole prim is to be blanked, do it with a single command
                if (i + 7 < cursor)
                {
                    face = ALL_SIDES;
                    i += 8;
                }
                else ++i;
            }
            
            params += [ PRIM_TEXTURE, face, gASCII_UUID, gCellSize, gSpaceOffset, 0 ]; //, PRIM_COLOR, face, <1, 1, 1>, 0 ];
        }
        
        // Specify the cursor position prim as the default.
        llSetLinkPrimitiveParamsFast(llList2Integer(gTextLinks, row_index + (cursor >> 3)), params);
   }
}

// If line is one long paragraph to be displayed, break it up into row size chunks
// so we don't have to decode the whole paragraph before starting to render.
// This is slower than decoding the entire line in one pass, but uses less memory.
// Pad it a bit, so we don't end up with an empty chars list before the line is truly done rendering.
list UTFtoInt(list chars, string line, integer pos)
{
    integer len = llStringLength(line);
    string  input;
    //integer long1;
    integer long2;
    integer char;
    integer colmax = gCols + 2;
    
    while (pos < len && llGetListLength(chars) < colmax)
    {
        // Unicode Decoder: http://wiki.secondlife.com/wiki/UTF-8 
        char = llBase64ToInteger(llStringToBase64(input = llGetSubString(line, pos, pos)));
        
        if (char > 0) chars += char >> 24;
        else
        {
            // Multibyte, use smart shifting. Skip decoding unicode greater than 0x3FFFF for speed
            long2 =   (integer)("0x"+llGetSubString(input = (string)llParseString2List(llEscapeURL(input),(list)"%",[]),-8,-1));
            //long1 = (integer)("0x"+llDeleteSubString(input,-8,-1));
            char =  (   (  0x0000003f & long2       )
                      | (( 0x00003f00 & long2) >> 2 ) 
                      | (( 0x003f0000 & long2) >> 4 ) 
                    //| (( 0x3f000000 & long2) >> 6 )
                    //| (( 0x0000003f & long1) << 24)
                    //| (( 0x00000100 & long1) << 22)
                    ) & (0x7FFFFFFF >> (5 * ((integer)(llLog(~char) / 0.69314718055994530941723212145818) - 25)));
            
            // Mark 2x characters as negative by setting top bit. Also set a bit to indicate left/right part of char.
            if (g2XKanji && char > 0x2FFF && char < 0xA000) chars += [char | 0x90000000, char | 0xA0000000];
            else chars += char;
        }
        
        ++pos;
    }
    
    gPos =  pos;
    return chars;
}

Draw(string text)
{
    integer total_lines = llGetListLength(llParseStringKeepNulls(text, (list)"\n", []));
    string  line;
    integer row = 0;
    integer line_num = 0;
    list    chars;
    integer char;
    integer pos_end;
    integer pos_out;
    
    do
    {
        // Re-parsing the text for each line is a tradeoff between speed and memory usage.
        if (gTrim)  line = llStringTrim(llList2String(llParseStringKeepNulls(text, (list)"\n", []), line_num), STRING_TRIM);
        else        line =              llList2String(llParseStringKeepNulls(text, (list)"\n", []), line_num);
        
        chars = [];
        gPos = 0;
        
        do
        {
            chars = UTFtoInt(chars, line, gPos);
            
            if (llGetListLength(chars) <= gCols || gWrap == 0)
            {
                Render(chars, 0, row, FALSE);
                
                // Done with this line.
                chars = [];
            }
            else if (llList2Integer(chars, gCols) == 32 || gWrap == 1)
            {
                Render(llList2List(chars, 0, gCols - 1), 0, row, FALSE);
                
                // If we got here with gWrap = 2, then skip the space
                chars = llDeleteSubList(chars, 0, gCols - (gWrap == 1));
            }
            else
            {
                // Handle finding a word wrap location.
                pos_end = gCols - 1;
                pos_out = 0;
                
                do
                {
                    char = llList2Integer(chars, pos_end);
                    
                    // Test for space
                    if      (char == 32) pos_out = pos_end - 1;
                    // Test for hyphen. Could also test for Japanese: "、" and "。", Hebrew: "־‬", Armenian: "֊"
                    else if (char == 45) pos_out = pos_end;
                    // Test for falling below wrap limit.
                    else if (pos_end < gCols * gWrapLimit)
                    {
                        // Test to see if last char is first half of split Kanji char.
                        if (llList2Integer(chars, gCols - 1) & 0x10000000) pos_out = gCols - 2;
                        else pos_out = gCols - 1;
                    }
                }
                while (!pos_out && --pos_end >= 0);
                
                Render(llList2List(chars, 0, pos_out), 0, row, FALSE);
                
                // If we wrapped on a space, delete it too, so it doesn't render on next line.
                chars = llDeleteSubList(chars, 0, pos_out + (char == 32));
            }
        }
        while (llGetListLength(chars) && ++row < gRows);
    }
    while (++line_num < total_lines && row < gRows);
    
    // Blank out any remaining display lines
    while (row < gRows)
    {
        Render([], 0, row, FALSE);
        ++row;
    }
    
    if (gNotify) llMessageLinked(LINK_SET, 0, "", "fw_done");
}

default
{
    state_entry()
    {
        gPrimCount = llGetObjectPrimCount(llGetKey())+llGetNumberOfPrims()*!!llGetAttached();
        
        integer link = gPrimCount;
        integer col = -1;
        integer row = -1;
        integer i;
        integer j;
        list    items;
        
        do
        {
            items = llParseString2List(llGetLinkName(link), (list)":", []);
            if (llList2String(items, 0) == "FURWARE text mesh")
            {
                if (llGetLinkNumberOfSides(link) == 8)
                {
                    if (llList2Integer(items, 2) > row) row = llList2Integer(items, 2);
                    if (llList2Integer(items, 3) > col) col = llList2Integer(items, 3);
                }
                else
                {
                    llOwnerSay("Only 8 face text prims supported");
                    return;
                }
            }
        }
        while (--link > 0);
        
        if (col < 0 || row < 0)
        {
            llOwnerSay("No text prims found");
            return;
        }
        
        gCols = ++col * 8;
        gColPrims = col;
        gRows = ++row;
        gTextLinks = [];
        link = gPrimCount;
        
        for (i = 0; i < row * col; ++i) gTextLinks += 0;
        
        do
        {
            items = llParseString2List(llGetLinkName(link), (list)":", []);
            if (llList2String(items, 0) == "FURWARE text mesh")
            {
                i = llList2Integer(items, 2) * col + llList2Integer(items, 3);
                gTextLinks = llListReplaceList(gTextLinks, (list)link, i, i);
            }
        }
        while (--link >= 0);
        
        for (i = 0; i < 256; ++i)
        {
            j = llListFindList(gCodePageUUIDs, (list)i);
            if (~j) gCodePages += llList2String(gCodePageUUIDs, j + 1);
            else    gCodePages += gBlankUUID;
        }
        
        gCodePageUUIDs = []; // No longer needed, empty it to free up memory?
        gASCII_UUID = llList2String(gCodePages, 0);
        gSpaceOffset = <-gOffset.x, gOffset.y - 2 * .0625, 0>;
        
        Flush(); // Invalidate the whole display
        Draw("");
        
        llMessageLinked(LINK_SET, 0, "", "fw_ready");
    }
    
    link_message(integer source, integer num, string str, key id)
    {
        if (llGetSubString(id, 0, 2) != "fw_") return;
        
        list    commands = llParseString2List(llToLower(id), (list)":", []);
        string  command  = llStringTrim(llList2String(commands, 0), STRING_TRIM);
        list    options;
        list    params;
        string  param;
        string  value_lc;
        integer i;
        integer pos;
        
        if      (command == "fw_data")
        {
            Draw(str);
        }
        else if (command == "fw_direct")
        {
            Render(UTFtoInt([], str, 0), llList2Integer(commands, 1), llList2Integer(commands, 2), TRUE);
        }
        else if (command == "fw_conf" || command == "fw_defaultconf")
        {
            options = llParseString2List(llToLower(str), (list)";", []);
            
            for(i = 0; i < llGetListLength(options); ++i)
            {
                params = llParseString2List(llList2String(options, i), (list)"=", []);
                
                if (llGetListLength(params) > 1)
                {
                    param =    llStringTrim(llList2String(params, 0), STRING_TRIM);
                    value_lc = llStringTrim(llList2String(params, 1), STRING_TRIM);
                    
                    if (param == "c")
                    {
                        pos = llListFindList(gColors, (list)value_lc);
                        gAlpha = 1;
                        
                        if      (pos == 0)
                        {
                            gColor = <llFrand(1), llFrand(1), llFrand(1)>;
                        }
                        else if (pos > 0)
                        {
                            gColor = llList2Vector(gColors, pos + 1);
                        }
                        else
                        {
                            value_lc = "<" + value_lc + ">";
                            rotation color = (rotation)value_lc;
                            
                            if (color == ZERO_ROTATION)
                            {
                                gColor = (vector)value_lc;
                                gAlpha = 1;
                            }
                            else
                            {
                                gColor = <color.x, color.y, color.z>;
                                gAlpha = color.s;
                            }
                        }
                    }
                    else if (param == "a")
                    {
                        pos = llListFindList([ "left", "center", "right" ], (list)value_lc);
                        if (~pos)
                        {
                            if (gAlign != pos) Flush();
                            gAlign = pos;
                        }
                    }
                    else if (param == "w")
                    {
                        pos = llListFindList([ "none", "char", "word" ], (list)value_lc);
                        if (~pos) gWrap = pos;
                    }
                    else if (param == "t")
                    {
                        gTrim = (value_lc == "on");
                    }
                    else if (param == "k")
                    {
                        g2XKanji = (value_lc == "on");
                    }
                    else if (param == "force")
                    {
                        gForce = (value_lc == "on");
                    }
                } // more than 1 param
            } // iterate options
        }
        else if (command == "fw_memory")
        {
            llOwnerSay("HexText Free Mem: " + (string)llGetFreeMemory());
        }
        else if (command == "fw_notify")
        {
            gNotify = (llToLower(llStringTrim(str, STRING_TRIM)) == "on");
        }
        else if (command == "fw_reset")
        {
            llResetScript();
        }
    }
    
    changed(integer change)
    {
        // Must reset, only time we search for link names.
        if (change & CHANGED_LINK &&
            gPrimCount != llGetObjectPrimCount(llGetKey())+llGetNumberOfPrims()*!!llGetAttached())
        {
            llResetScript();
        }
    }
}
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