Difference between revisions of "User:Kerik Rau"

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=Code Snippets=
=Code Snippets=
==Non Destructive Face Finder==
I wrote this in a minute or so and it seems pretty useful.  Should be helpful for anyone wanting to find the face value in LSL.
<lsl>
integer NumSides;
integer NextSide;
default
{
    state_entry()
    {
        NumSides = llGetNumberOfSides();
    }
    touch_start(integer total_number)
    {
        vector CurrentColor = llGetColor(NextSide);
       
        llSetColor(<1,0,0>, NextSide);
        llOwnerSay("Turning side " + (string) NextSide);
        llSleep(1);
        llSetColor(CurrentColor, NextSide);
       
        if(++NextSide >= NumSides)
            NextSide = 0;
    }
}
</lsl>


==Simple Stupid Slide Show==
==Simple Stupid Slide Show==
Line 76: Line 47:


==SLURL Raster Image URL Generator==
==SLURL Raster Image URL Generator==
I was rather interested in the raster images provided within SL and SLURL.com so I decided to figure out how to replicate it in such a way that it could be incorporated into tools and/or services outside the standard fair offered by Linden Labs.  At some point I may rewrite it to use PHP or offer tips to incorporate it into something like the WMS provider in MapGuide.
I was rather interested in the raster images provided within SL and SLURL.com so I decided to figure out how to replicate it in such a way that it could be incorporated into tools and/or services outside the standard fair offered by Linden Labs.


===PseudoCode===


<pre>
//grab the region coordinates and store them
$RegionPos;
//1 Tile = 256m
$TilePos = $RegionPos/256.0;
//Fix the offset in the service
$TilePos.y = 1279.0 - $TilePos.y;
//genrate the URL, the 0 on the end may be a switch for gif/png, need to read up more on the SL map API
$mapURL = "http://secondlife.com/apps/mapapi/grid/map_image/" \
  + Floor($TilePos.x) + "-" + Floor($TilePos.y) + "-1-0"
</pre>
===LSL===
<lsl>
<lsl>
//SLURL Tile URL Generator - By Kerik Rau
string MapTileURL()
 
{ 
//Based on the javascript from SLURL.com, merely an adaptation in LSL
    vector TilePos = llGetRegionCorner();
//It should only take a minute or 2 to export this into PHP or other languages
 
//SLURL uses WMS, I still want to look at incorporating it into something like Mapguide
//I will need to look at the implementation to see if this would be easy or a pain
 
vector genTileVec(vector RegPos)
{
     //tiles are in a grid based on the regions, so 256m = 1 tile
     //tiles are in a grid based on the regions, so 256m = 1 tile
     RegPos /= 256.0;
     TilePos /= 256.0;
      
      
     //offset provided in the javascript, really 1278 + 1 (probably 0 -> 1 index difference?)
     //offset provided in the javascript, really 1278 + 1 (probably 0 -> 1 index difference?)
     RegPos.y = 1279.0 - RegPos.y;
     TilePos.y = 1279.0 - TilePos.y;
 
    return RegPos;
}
 
string genMapURL()
{ 
    vector TilePos = genTileVec(llGetRegionCorner());
      
      
     //should look like http://secondlife.com/apps/mapapi/grid/map_image/x-y-zoom-0
     //should look like http://secondlife.com/apps/mapapi/grid/map_image/x-y-zoom-0
Line 127: Line 66:
     mapURL += "-";
     mapURL += "-";
     mapURL += (string) llFloor(TilePos.y);
     mapURL += (string) llFloor(TilePos.y);
   
     //the 3rd value is something to do with zoom, but only 1 seems to work with this
     //the 3rd value is something to do with zoom
    //the 4th value is undefined, omitting it works but I leave it in to match SLURL
     mapURL += "-1-0";
     mapURL += "-1-0";
     return mapURL;
     return mapURL;
}
}
default
{
    state_entry()
    {
        llSetText("SLURL Raster Image URL Generator\nOpens the image of the current sim\n(in a browser)", <1,1,1>, 1);
    }
   
    touch_start(integer numdet)
    {
        integer i;
        for(i = 0; i < numdet; ++i)
            llLoadURL(llDetectedKey(i), "load this page to see the sim image", genMapURL());
       
    }
}
</lsl>
</lsl>

Revision as of 15:28, 13 January 2009

Code Snippets

Simple Stupid Slide Show

Dumb slide show: simply rez a cube, throw in the script and textures and instant slide show. Ya, boring isn't it?

<lsl> integer Face = 2; float Delay = 25.0;

list Textures; integer TextureNum;

BuildDB() { 

   Textures = [];
   integer NumTextures = llGetInventoryNumber(INVENTORY_TEXTURE);
   
   while(NumTextures--)
       Textures += llGetInventoryName(INVENTORY_TEXTURE, NumTextures);
       
   llOwnerSay("Loaded Textures: " + llDumpList2String(Textures, ", "));

}

default { 

   state_entry()
   {
       BuildDB();
       llSetTimerEvent(Delay);
   }
   
   changed(integer change)
   {
       if(change & CHANGED_INVENTORY)
           BuildDB();   
   }
   
   timer()
   {
       llSetTexture(llList2String(Textures, TextureNum), Face);
       
       if(++TextureNum >= llGetListLength(Textures))
           TextureNum = 0;
   }

} </lsl>

SLURL Raster Image URL Generator

I was rather interested in the raster images provided within SL and SLURL.com so I decided to figure out how to replicate it in such a way that it could be incorporated into tools and/or services outside the standard fair offered by Linden Labs.


<lsl> string MapTileURL() { 

   vector TilePos = llGetRegionCorner();

   //tiles are in a grid based on the regions, so 256m = 1 tile
   TilePos /= 256.0;
   
   //offset provided in the javascript, really 1278 + 1 (probably 0 -> 1 index difference?)
   TilePos.y = 1279.0 - TilePos.y;
   
   //should look like http://secondlife.com/apps/mapapi/grid/map_image/x-y-zoom-0
   string mapURL = "http://secondlife.com/apps/mapapi/grid/map_image/";
   mapURL += (string) llFloor(TilePos.x);
   mapURL += "-";
   mapURL += (string) llFloor(TilePos.y);

   //the 3rd value is something to do with zoom
   mapURL += "-1-0";
   return mapURL;

} </lsl>

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