Rune wrote:
> In my particle system many settings are specified with macros rather than
> with variables. The particle system can be called more than once in the same
> scene, and sometimes you want some settings to be specified the first time
> the system is called, but not the second time.
From this I assume Rune means that his system checks whether or not the
macro is defined (using #ifdef), else it assigns a default value;
redefining the macro to do nothing wouldn't be any use here.
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