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root/radiance/ray/src/util/cmatrix.h
Revision: 2.13
Committed: Tue Jan 19 23:32:00 2021 UTC (20 months, 1 week ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: HEAD
Changes since 2.12: +6 -2 lines
Log Message:
feat: Added -rf and -rb options to rmtxop to load XML reflectance matrices

File Contents

# Content
1 /* RCSid $Id: cmatrix.h,v 2.12 2020/03/25 01:51:09 greg Exp $ */
2 /*
3 * Color matrix routine declarations.
4 *
5 * G. Ward
6 */
7
8 #ifndef _RAD_CMATRIX_H_
9 #define _RAD_CMATRIX_H_
10
11 #include <sys/types.h>
12 #include "color.h"
13
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17
18 /* Data types for file loading */
19 enum {DTfromHeader=0, DTrgbe, DTxyze, DTfloat, DTascii, DTdouble, DTend};
20
21 extern const char stdin_name[];
22 extern const char *cm_fmt_id[];
23 extern const int cm_elem_size[];
24
25 /* A color coefficient matrix -- vectors have ncols==1 */
26 typedef struct {
27 int nrows, ncols;
28 COLORV cmem[3]; /* extends struct */
29 } CMATRIX;
30
31 #define COLSPEC (sizeof(COLORV)==sizeof(float) ? "%f %f %f" : "%lf %lf %lf")
32
33 #define cm_lval(cm,r,c) ((cm)->cmem + 3*((size_t)(r)*(cm)->ncols + (c)))
34
35 #define cv_lval(cm,i) ((cm)->cmem + 3*(i))
36
37 /* Allocate a color coefficient matrix */
38 extern CMATRIX *cm_alloc(int nrows, int ncols);
39
40 /* Resize color coefficient matrix */
41 extern CMATRIX *cm_resize(CMATRIX *cm, int nrows);
42
43 #define cm_free(cm) free(cm)
44
45 /* Load header to obtain/check data type and matrix dimensions */
46 extern char *cm_getheader(int *dt, int *nr, int *nc,
47 int *swp, COLOR scale, FILE *fp);
48
49 /* Allocate and load a matrix from the given input (or stdin if NULL) */
50 extern CMATRIX *cm_load(const char *inspec, int nrows, int ncols, int dtype);
51
52 /* Extract a column vector from a matrix */
53 extern CMATRIX *cm_column(const CMATRIX *cm, int c);
54
55 /* Multiply two matrices (or a matrix and a vector) and allocate the result */
56 extern CMATRIX *cm_multiply(const CMATRIX *cm1, const CMATRIX *cm2);
57
58 /* write out matrix to file (precede by resolution string if picture) */
59 extern int cm_write(const CMATRIX *cm, int dtype, FILE *fp);
60
61 /* Load and convert a matrix BTDF from the given XML file */
62 extern CMATRIX *cm_loadBTDF(const char *fname);
63
64 /* Load and convert a matrix BRDF from the given XML file */
65 extern CMATRIX *cm_loadBRDF(const char *fname, int backside);
66
67 #ifdef __cplusplus
68 }
69 #endif
70 #endif /* _RAD_CMATRIX_H_ */