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/* RCSid $Id$ */ |
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/* |
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* Color matrix routine declarations. |
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* |
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* G. Ward |
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*/ |
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#ifndef _RAD_CMATRIX_H_ |
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#define _RAD_CMATRIX_H_ |
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#include "color.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* Data types for file loading */ |
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enum {DTfromHeader, DTascii, DTfloat, DTdouble, DTrgbe, DTxyze}; |
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/* A color coefficient matrix -- vectors have ncols==1 */ |
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typedef struct { |
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int nrows, ncols; |
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COLORV cmem[3]; /* extends struct */ |
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} CMATRIX; |
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#define COLSPEC (sizeof(COLORV)==sizeof(float) ? "%f %f %f" : "%lf %lf %lf") |
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#define cm_lval(cm,r,c) ((cm)->cmem + 3*((r)*(cm)->ncols + (c))) |
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#define cv_lval(cm,i) ((cm)->cmem + 3*(i)) |
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/* Allocate a color coefficient matrix */ |
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extern CMATRIX *cm_alloc(int nrows, int ncols); |
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/* Resize color coefficient matrix */ |
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extern CMATRIX *cm_resize(CMATRIX *cm, int nrows); |
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#define cm_free(cm) free(cm) |
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/* Load header to obtain data type */ |
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int getDTfromHeader(FILE *fp); |
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/* Allocate and load a matrix from the given file (or stdin if NULL) */ |
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extern CMATRIX *cm_load(const char *fname, int nrows, int ncols, int dtype); |
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/* Extract a column vector from a matrix */ |
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extern CMATRIX *cm_column(const CMATRIX *cm, int c); |
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/* Scale a matrix by a single value */ |
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extern CMATRIX *cm_scale(const CMATRIX *cm1, const COLOR sca); |
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/* Multiply two matrices (or a matrix and a vector) and allocate the result */ |
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extern CMATRIX *cm_multiply(const CMATRIX *cm1, const CMATRIX *cm2); |
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/* print out matrix as ASCII text -- no header */ |
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extern void cm_print(const CMATRIX *cm, FILE *fp); |
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/* Load and convert a matrix BSDF from the given XML file */ |
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extern CMATRIX *cm_loadBSDF(char *fname, COLOR cLamb); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_CMATRIX_H_ */ |
