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/* RCSid $Id: func.h,v 2.3 2003/02/25 02:47:22 greg Exp $ */ |
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/* |
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* Header file for modifiers using function files. |
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* |
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* Include after ray.h |
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*/ |
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#ifndef _RAD_FUNC_H_ |
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#define _RAD_FUNC_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include "copyright.h" |
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#include "calcomp.h" |
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#define MAXEXPR 9 /* maximum expressions in modifier */ |
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typedef struct { |
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EPNODE *ep[MAXEXPR+1]; /* NULL-terminated expression list */ |
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char *ctx; /* context (from file name) */ |
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XF *f, *b; /* forward and backward transforms */ |
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} MFUNC; /* material function */ |
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extern XF unitxf; /* identity transform */ |
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extern XF funcxf; /* current transform */ |
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extern MFUNC *getfunc(OBJREC *m, int ff, unsigned int ef, int dofwd); |
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extern void freefunc(OBJREC *m); |
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extern int setfunc(OBJREC *m, RAY *r); |
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extern void loadfunc(char *fname); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_FUNC_H_ */ |
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