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/* RCSid $Id: rmatrix.h,v 2.12 2020/03/25 01:51:09 greg Exp $ */ |
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/* |
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* Header file for general matrix routines. |
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*/ |
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#ifndef _RAD_RMATRIX_H_ |
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#define _RAD_RMATRIX_H_ |
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#include "cmatrix.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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/* Preferred BSDF component: |
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transmission, reflection front (normal side), reflection back */ |
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typedef enum {RMPtrans=0, RMPreflF, RMPreflB} RMPref; |
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/* General plane-ordered component matrix */ |
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typedef struct { |
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int nrows, ncols; |
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short ncomp; |
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uby8 dtype; |
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uby8 swapin; |
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char *info; |
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double mtx[3]; /* extends struct */ |
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} RMATRIX; |
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#define rmx_lval(rm,r,c,i) (rm)->mtx[(i)+(rm)->ncomp*((c)+(size_t)(rm)->ncols*(r))] |
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/* Allocate a nr x nc matrix with n components */ |
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extern RMATRIX *rmx_alloc(int nr, int nc, int n); |
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/* Free a RMATRIX array */ |
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extern void rmx_free(RMATRIX *rm); |
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/* Resolve data type based on two input types (returns 0 for mismatch) */ |
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extern int rmx_newtype(int dtyp1, int dtyp2); |
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/* Load matrix from supported file type (NULL for stdin, '!' with command) */ |
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extern RMATRIX *rmx_load(const char *inspec, RMPref rmp); |
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/* Append header information associated with matrix data */ |
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extern int rmx_addinfo(RMATRIX *rm, const char *info); |
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/* Write matrix to file type indicated by dtype */ |
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extern int rmx_write(const RMATRIX *rm, int dtype, FILE *fp); |
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/* Allocate and assign square identity matrix with n components */ |
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extern RMATRIX *rmx_identity(int dim, int n); |
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/* Duplicate the given matrix */ |
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extern RMATRIX *rmx_copy(const RMATRIX *rm); |
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/* Allocate and assign transposed matrix */ |
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extern RMATRIX *rmx_transpose(const RMATRIX *rm); |
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/* Multiply (concatenate) two matrices and allocate the result */ |
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extern RMATRIX *rmx_multiply(const RMATRIX *m1, const RMATRIX *m2); |
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/* Element-wise multiplication (or division) of m2 into m1 */ |
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extern int rmx_elemult(RMATRIX *m1, const RMATRIX *m2, int divide); |
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/* Sum second matrix into first, applying scale factor beforehand */ |
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extern int rmx_sum(RMATRIX *msum, const RMATRIX *madd, const double sf[]); |
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/* Scale the given matrix by the indicated scalar component vector */ |
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extern int rmx_scale(RMATRIX *rm, const double sf[]); |
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/* Allocate new matrix and apply component transformation */ |
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extern RMATRIX *rmx_transform(const RMATRIX *msrc, int n, const double cmat[]); |
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/* Convert a color matrix to newly allocated RMATRIX buffer */ |
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extern RMATRIX *rmx_from_cmatrix(const CMATRIX *cm); |
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/* Convert general matrix to newly allocated CMATRIX buffer */ |
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extern CMATRIX *cm_from_rmatrix(const RMATRIX *rm); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_RMATRIX_H_ */ |
