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I have macro that calls other macros...
#macro generateTail()
#declare tailType = int(rand(rnd)*3)+1;
#switch(tailType)
#case(1)
generateTail1()
#break
#case(2)
generateTail2()
#break
#case(3)
generateTail3()
#break
#end
#end
If I want to add in a fourth generateTail macro, I have to update the random
statement, then add a new "case" statement into the "switch". Can I call a macro
dynamically, by perhaps adding the random number to "generateTail" and calling
the result?
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From: Christian Froeschlin
Subject: Re: Is there a more dynamic way of doing this...
Date: 1 May 2014 19:18:25
Message: <5362d641$1@news.povray.org>
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On 26.04.2014 15:31, FNH wrote:
> If I want to add in a fourth generateTail macro, I have to update the random
> statement, then add a new "case" statement into the "switch". Can I call a macro
> dynamically, by perhaps adding the random number to "generateTail" and calling
> the result?
I've never tried this myself but I think it is possible to
generate code in the program (as text), write it to a file, and
then #include the generated file. So you could have a macro that
generates the switch statement for N macros.
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Am 02.05.2014 01:18, schrieb Christian Froeschlin:
> On 26.04.2014 15:31, FNH wrote:
>
>> If I want to add in a fourth generateTail macro, I have to update the
>> random
>> statement, then add a new "case" statement into the "switch". Can I
>> call a macro
>> dynamically, by perhaps adding the random number to "generateTail" and
>> calling
>> the result?
>
> I've never tried this myself but I think it is possible to
> generate code in the program (as text), write it to a file, and
> then #include the generated file. So you could have a macro that
> generates the switch statement for N macros.
It's perfectly possible indeed, and even exploited by a macro in
strings.inc that executes a given string as POV-Ray SDL code.
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