GetGlow

Since a lot of people have asked, me included, I decided to write a function to compensate for the missing llGetGlow(integer face) compliment to llGetAlpha(integer face).

To this effect, I have reverse engineered the llGetAlpha() process fairly accurately, and written GetGlow() to mimic it's functionality to the best of my knowledge.

-To date- I have been unable to find a post providing this function. That may be because it is deeply buried far from places where it would be relevantly visible, or, possibly because a function of this design has not been offered before. Either way, Until LSL incorporates an actual GetGlow() function, you can use this provision to generate the same effect.

I submit for your convenience, a functional equivalent to GetGlow().

Place the following function at the top of each script you wish to use GetGlow(integer face) within. <lsl> float GetGlow(integer ia)// This function is similar to llGetAlpha(). Usage: float GetGlow(integer face) {

   if(ia > llGetNumberOfSides()) { return FALSE; }
   else
       {
       list la = llGetPrimitiveParams([PRIM_GLOW, ia]);
       float fa;
       for(ia = llGetListLength(la); ia > -1; ia--)fa += llList2Float(la, ia);
       return fa;    
       }

} </lsl>Function float llGetGlow(integer face) by -ThumpieBunnyEve Hax

Here is the Equivalent LSL Portal page formatting for use with it.

float GetGlow(integer face)

Returns the Glow (intensity) of the given face.

If face is ALL_SIDES, the value returned is the sum of glows on all faces. To obtain the mean value, use the following: <lsl>float meanGlow = GetGlow(ALL_SIDES) / ((float)llGetNumberOfSides());</lsl>

Verbosely commented Example: <lsl> //Blackbox Tech Revealed! Usage: float GetGlow(integer face) float GetGlow(integer ia)// This function is similar in many if not all capacities to llGetAlpha(); {

   if(ia > llGetNumberOfSides()) //To note: I'm not sure why llGetAlpha returns the value TRUE for non existent sides,
       {                         //but I'm going to assume that it's relevant to the way the Clients editor-
       return FALSE;             //adds sides when you alter a prims properties. 
       }                          
                                              
   else
       {
       list la = llGetPrimitiveParams([PRIM_GLOW, ia]);//This list may contain floats derived from multiple sides if (ia) is Negitive, 
                                                       //a single side if (ia) Positive, or no sides if (ia) > llGetNumberOfSides().

       float fa; //memory space for the addition of float data derived from (la) below.
       for(ia = llGetListLength(la); ia > -1; ia--)//To save memory space, we'll reuse integer ia, assigning it the # of Sides.
           {
           fa += llList2Float(la, ia);//add together all available floats from list (la)
           }
       return fa;//return the cumulative glow total of (ia)'s side(s).
       }

}

//---Below is an example of GetGlow's usage, and it's Comparison to llGetAlpha.---

default { state_entry(){

            llSetPrimitiveParams([PRIM_COLOR, -1, <0,0,1>, .5,PRIM_GLOW,-1,.5]);
            llOwnerSay(" \n"+
            "GetGlow(ALL_SIDES)= " +(string)GetGlow(ALL_SIDES)+"\n"+
            "llGetAlpha(ALL_SIDES)= "+(string)llGetAlpha(ALL_SIDES)+"\n"+
            "GetGlow(-1)= " +(string)GetGlow(-1) +"\n"+
            "llGetAlpha(-1)= "+(string)llGetAlpha(-1)+"\n"+
            "GetGlow(2)= "  +(string)GetGlow(2)  +"\n"+
            "llGetAlpha(2)= " +(string)llGetAlpha(2) +"\n"+
            "GetGlow(0)= "  +(string)GetGlow(0)  +"\n"+
            "llGetAlpha(0)= " +(string)llGetAlpha(0) +"\n"+
            "GetGlow(25)= " +(string)GetGlow(25) +"\n"+
            "llGetAlpha(25)= "+(string)llGetAlpha(25));
            }

} </lsl>Example of usage by -ThumpieBunnyEve Hax

Example output of the script above.
To Owner:
GetGlow(ALL_SIDES)= 3.000000
llGetAlpha(ALL_SIDES)= 3.000000
GetGlow(-1)= 3.000000
llGetAlpha(-1)= 3.000000
GetGlow(2)= 0.500000
llGetAlpha(2)= 0.500000
GetGlow(0)= 0.500000
llGetAlpha(0)= 0.500000
GetGlow(25)= 1.000000
llGetAlpha(25)= 1.000000


---

Sorry if the Formatting is off, I could really use some help making this page look more professional, This is my first provisionary page. Edits and corrections welcome, but especially page formatting assistance! -ThumpieBunnyEve Hax