otspecial.h
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	/* RCSid $Id: otspecial.h,v 2.10 2019/04/18 22:37:36 greg Exp $ */
	/*
	* Special type flags for objects used in rendering.
	* Depends on definitions in otypes.h
	*/
	#ifndef _RAD_OTSPECIAL_H_
	#define _RAD_OTSPECIAL_H_
	#ifdef __cplusplus
	extern "C" {
	#endif

	/* flag for nominally transparent materials */
	#define T_TRANSP T_SP1

	/* flag for completely opaque materials */
	#define T_OPAQUE T_SP2

	#define istransp(t) (ofun[t].flags & T_TRANSP)

	#define isopaque(t) (ofun[t].flags & T_OPAQUE)

	/* test if we have a BSDF proxy surface */
	#define isBSDFproxy(m) (((m)->otype == MAT_BSDF) & ((m)->oargs.nsargs > 0) &&\
	strcmp((m)->oargs.sarg[0], "0"))

	/* defined in initotypes.c */
	extern OBJREC findmaterial(OBJREC o);

	#ifdef __cplusplus
	}
	#endif
	#endif /* _RAD_OTSPECIAL_H_ */