Hi, I have the following macro (simplified for brevity).

#macro ColorFromBurgers(burgers)
/* good 11-color map from http://colorbrewer2.org
  #warning concat("Got burgers value: ",str(burgers,0,0),"\n")
*/
  #switch(burgers)
 #range (-5,-1)
   rgb <141,211,199>/255.0
 #break
 #case (0)
   rgb <255,255,179>/255.0
 #break
 #case (10)
   rgb <190,186,218>/255.0
 #break
#end
#end

I want to print out the color my macro is returning somehow.
I've tried the following with no success:
First I tried:
#warning concat("The color is ",ColorFromBurgers(burger),"\n")
but I get an error about not having three arguments.
File Context (5 lines):
          rgb <251,128,114>/255.0
        #break
        #case (12)
          rgb <128,177,211>/255.0
        #
Parse Error: Expected 3 parameters but only 1 found.

Strange that none of the lines seems to be anything that needs 3 parameters.

Tried a couple other things, but nothing seems to work.
The last thing i just tried before giving up was this:
   #declare c = color ColorFromBurgers(burger);
   #declare s = CRGBStr(color c ,0,0);
   #warning concat("The color is ",s,"\n")

I get
          #declare c = color ColorFromBurgers
Parse Error: All #declares of float, vector, and color require semi-colon ';' at
 end if the language version is set to 3.5 or higher. Either add the semi-colon
 or set the language version to 3.1 or lower.

Help!  Thanks

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Am 26.08.2014 04:30, schrieb wealthychef:
> Hi, I have the following macro (simplified for brevity).
>
> #macro ColorFromBurgers(burgers)
> /* good 11-color map from http://colorbrewer2.org
>    #warning concat("Got burgers value: ",str(burgers,0,0),"\n")
> */
>    #switch(burgers)
>   #range (-5,-1)
>     rgb <141,211,199>/255.0
>   #break
>   #case (0)
>     rgb <255,255,179>/255.0
>   #break
>   #case (10)
>     rgb <190,186,218>/255.0
>   #break
> #end
> #end
>
> I want to print out the color my macro is returning somehow.
> I've tried the following with no success:
> First I tried:
> #warning concat("The color is ",ColorFromBurgers(burger),"\n")
> but I get an error about not having three arguments.
> File Context (5 lines):
>            rgb <251,128,114>/255.0
>          #break
>          #case (12)
>            rgb <128,177,211>/255.0
>          #
> Parse Error: Expected 3 parameters but only 1 found.
>
> Strange that none of the lines seems to be anything that needs 3 parameters.

"Returning" values from within control structures in a macro can be 
troublesome; try something like this:

   #macro ColorFromBurgers(burgers)
     #switch(burgers)
       #range(-5,-1)
         #local Result = rgb <141,211,199>/255.0;
       #break
       #case (0)
         #local Result = rgb <255,255,179>/255.0;
       #break
       #case (10)
         #local Result = rgb <190,186,218>/255.0;
       #break
     #end
     Result
   #end


As for printing the result, remember that colours are vector-like 
beasts, so vstr() should do the job.

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clipka <ano### [at] anonymousorg> wrote:
> Am 26.08.2014 04:30, schrieb wealthychef:
> > I want to print out the color my macro is returning somehow.
> > I've tried blah blah blah... FAIL
>
> "Returning" values from within control structures in a macro can be
> troublesome; try something like this:
>
>    #macro ColorFromBurgers(burgers)
>      #switch(burgers)
>        #range(-5,-1)
>          #local Result = rgb <141,211,199>/255.0;
>        #break
>        #case (0)
>          #local Result = rgb <255,255,179>/255.0;
>        #break
>        #case (10)
>          #local Result = rgb <190,186,218>/255.0;
>        #break
>      #end
>      Result
>    #end
>
>
> As for printing the result, remember that colours are vector-like
> beasts, so vstr() should do the job.

Thank you so much for the help!  Cheers.  That worked great.

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