Difference between revisions of "LlSetText"

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{{LSL DefineRow||Useful snippet: [[llGetObjectPermMask]]|Label an object with text and newlines to give away or sell}}
{{LSL DefineRow||Useful snippet: [[llGetObjectPermMask]]|Label an object with text and newlines to give away or sell}}
|notes=To actually display text on a prim, see [[XyzzyText]], or consider using parcel prim [[:Category:LSL_Media|Media]] options (useful only if you have control over the land's media settings.)
|notes=To actually display text on a prim, see [[XyzzyText]], or consider using parcel prim [[:Category:LSL_Media|Media]] options (useful only if you have control over the land's media settings.)
----
The function displays '''text''' that hover over the prim's center, the prim position. The height over the center is proportional to the prim's Z-dimension exclusively
* It doesn't matter how the prim is rotated, so if Z is smaller than X and Y the '''text''' may be seen '''on''' the prim
|cat1=Effects
|cat1=Effects
|cat2=Prim
|cat2=Prim

Revision as of 03:18, 22 February 2012

Summary

Function: llSetText( string text, vector color, float alpha );

Displays text that hovers over the prim with specific color and translucency (specified with alpha).

• string text floating text to display
• vector color color in RGB <R, G, B> (<0.0, 0.0, 0.0> = black, <1.0, 1.0, 1.0> = white)
• float alpha from 0.0 (clear) to 1.0 (solid) (0.0 <= alpha <= 1.0)

Caveats

  • Do not rely on Floating Text as a storage medium; it is neither secure nor finalized.
    • Floating text has been altered in past server updates, breaking existing content; future changes may occur.
    • Even "invisible"[1] floating text is transmitted to the client.
      • It can be viewed by anyone with a client that is capable of rendering text that is supposed to be invisible.
      • The network packets that contain the text can be sniffed and the text read.
  • If more than one llSetText is called (By reset,interaction or script state) within a prim the latest call will take priority over the previous.
  • text is limited to 254 bytes, if the string is longer it will be truncated to 254 bytes, even if that means the truncation will chop a character in half.
  • An unbroken line of text of a great length may be broken automatically into two lines (one above the other).
  • Floating text can be seen through walls and other object. Be considerate of neighbors in malls and apartment buildings.
    • Visibility distance increases with prim size.
  • Removing the script or deactivating it will not remove the prim's floating text.
    • Floating text is a prim property and not dependent on a script for its continued existence.
  • To remove floating text, use the following:

<lsl>llSetText("", <1.0, 1.0, 1.0>, 1.0);</lsl>

  • Shift-copying does not keep the floating text prim property. If the llSetText() script is not triggered when a copy made, the copy will not have the floating text.
  • Vertical whitespace is removed from the end of the text string, so if you want vertical whitespace put any character (like a space) on the last line.
  • Multiple linebreaks with empty lines are converted to a single linebreak, so add a whitespace character on every line you want to skip:

<lsl>llSetText("Monkeys\n\n\n\n\n", <1.0, 1.0, 1.0>, 1.0);//Bad llSetText("Monkeys\n \n \n \n \n ", <1.0, 1.0, 1.0>, 1.0);//Good</lsl>

All Issues ~ Search JIRA for related Bugs

Examples

Example of how llSetText could be included in default code to show object's name in green text: <lsl>default {

   state_entry()
   {
        llSay(0, "Hello, Avatar!");
        llSetText(llGetObjectName(), <0.0, 1.0, 0.0>, 1.0); // Display the object's current name in green
   }
   touch_start(integer total_number)
   {
        llSay(0, "Touched.");
   }

}</lsl> By default the floating text will appear on a single line. However, the floating text can be spread over multiple lines by using a line break "\n" (read SplitLine in section 'See Also').

Color & Alpha

Color Code
White <1.0, 1.0, 1.0>
Grey <0.5, 0.5, 0.5>
Black <0.0, 0.0, 0.0>
Red <1.0, 0.0, 0.0>
Green <0.0, 1.0, 0.0>
Blue <0.0, 0.0, 1.0>

The x, y & z components of the vector are used to represent red, green, and blue respectively. The range is different than traditional RGB, instead of being 0 -> 255, LSL uses 0 -> 1. <1.0, 1.0, 1.0>, means "white" and <0.0, 0.0, 0.0> means "black": <lsl>llSetText("I am white", <1.0, 1.0, 1.0>, 1.0);//white text</lsl> <lsl>llSetText("I am black", <0.0, 0.0, 0.0>, 1.0);//black text</lsl> The 1.0 is the alpha setting. 1.0 means fully opaque, and 0.0 would be completely transparent (invisible): <lsl>llSetText("alpha", <0.0, 1.0, 0.0>, 0.5);//50% translucent green text</lsl>

Multiple lines

<lsl>llSetText("I am \n on two lines!", <0.0, 1.0, 0.0>, 1.0);//two lines of green text</lsl>

Useful Snippets

Drag this script out of inventory onto an object to erase its set text: <lsl>// http://wiki.secondlife.com/wiki/llSetText default {

   state_entry()
   {
       llSetText("", <1.0, 1.0, 1.0>, 1.0);
       llRemoveInventory(llGetScriptName());
   }

}</lsl> Code to easily specify appearance of hovertext: <lsl> vector blue = <0,0,1>; vector orange = <1,0.5,0>; vector cyan = <0,1,1>; vector pink = <1,0.5,0.76>; vector green = <0,1,0>; vector red = <1,0,0>; vector white = <1,1,1>; vector yellow = <1,1,0.1>; vector purple = <1,0,1>; vector black = <0,0,0>;

string hoverText = "TEXT GOES HERE"; // Sets the text vector hoverColor = white; // Sets the color the text will show. Use predefined colors or any RGB color vector in float form float hoverAlpha = 1.0; // Sets the text's transparency, 1.0 being SOLID, while 0 would be clear,

default {

   state_entry()
   {
       llSetText(hoverText, hoverColor, hoverAlpha);
   }

}</lsl> To make hovertext under linked prims you can use this simple function: <lsl> mySetLinkText(integer linknum, string text, vector color, float alpha) {

   llSetLinkPrimitiveParamsFast(linknum,[PRIM_TEXT,text,color,alpha]);

}

// For example:

default {

   touch_start(integer total_number)
   {
       mySetLinkText(LINK_SET, "TEST", <0,1,0>, 0.5);
   }

}</lsl>

Notes

To actually display text on a prim, see XyzzyText, or consider using parcel prim Media options (useful only if you have control over the land's media settings.)


The function displays text that hover over the prim's center, the prim position. The height over the center is proportional to the prim's Z-dimension exclusively

  • It doesn't matter how the prim is rotated, so if Z is smaller than X and Y the text may be seen on the prim

See Also

Constants

•  PRIM_TEXT

Articles

•  Limits SL limits and constrictions
•  Color in LSL
•  Translucent Color
•  Examples: SplitLine Insert 'new line' escape codes at certain positions of a string
•  Useful snippet: llGetObjectPermMask Label an object with text and newlines to give away or sell

Deep Notes

All Issues

~ Search JIRA for related Issues
   llSetText is not working with special characters.

Footnotes

  1. ^ Floating text with an alpha set to 0.0 is rendered "invisible"

Signature

function void llSetText( string text, vector color, float alpha );