Custom include for im3d_config.h

[jlaumon]

Hey John!

How about adding something like IMGUI_USER_CONFIG, which allows including a different file in case you don't want to modify im3d_config.h? (If you use im3d as a submodule for example.)

// Configuration file with compile-time options (edit imconfig.h or '#define IMGUI_USER_CONFIG "myfilename.h" from your build system')
#ifdef IMGUI_USER_CONFIG
#include IMGUI_USER_CONFIG
#endif
#if !defined(IMGUI_DISABLE_INCLUDE_IMCONFIG_H) || defined(IMGUI_INCLUDE_IMCONFIG_H)
#include "imconfig.h"
#endif

I can make a PR if you're interested.

Cheers

[john-chapman]

Ah, good idea! I'm not sure about the utility of the IMGUI_DISABLE_INCLUDE_IMCONFIG_H/IMGUI_INCLUDE_IMCONFIG_H macros, I'd prefer something like this:

#ifdef IM3D_CONFIG
   #include IM3D_CONFIG
#else
   #include "im3d_config.h"
#endif

Could always add those extra control macros if there's ever a use case for them.

If you've got time a PR would be cool!

Cheers.