ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/util/cmatrix.h
Revision: 2.8
Committed: Wed Oct 31 22:19:57 2018 UTC (5 years, 4 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.7: +3 -2 lines
Log Message:
Fix potential issues on very large matrices (> 2GB)

File Contents

# User Rev Content
1 greg 2.8 /* RCSid $Id: cmatrix.h,v 2.7 2015/05/04 20:53:21 greg Exp $ */
2 greg 2.1 /*
3     * Color matrix routine declarations.
4     *
5     * G. Ward
6     */
7    
8     #ifndef _RAD_CMATRIX_H_
9     #define _RAD_CMATRIX_H_
10    
11 greg 2.8 #include <sys/types.h>
12 greg 2.1 #include "color.h"
13    
14     #ifdef __cplusplus
15     extern "C" {
16     #endif
17    
18     /* Data types for file loading */
19 greg 2.6 enum {DTfromHeader=0, DTascii, DTrgbe, DTxyze, DTfloat, DTdouble, DTend};
20 greg 2.4
21     extern const char *cm_fmt_id[];
22     extern const int cm_elem_size[];
23 greg 2.1
24     /* A color coefficient matrix -- vectors have ncols==1 */
25     typedef struct {
26     int nrows, ncols;
27     COLORV cmem[3]; /* extends struct */
28     } CMATRIX;
29    
30     #define COLSPEC (sizeof(COLORV)==sizeof(float) ? "%f %f %f" : "%lf %lf %lf")
31    
32 greg 2.8 #define cm_lval(cm,r,c) ((cm)->cmem + 3*((size_t)(r)*(cm)->ncols + (c)))
33 greg 2.1
34     #define cv_lval(cm,i) ((cm)->cmem + 3*(i))
35    
36     /* Allocate a color coefficient matrix */
37 greg 2.5 extern CMATRIX *cm_alloc(int nrows, int ncols);
38 greg 2.1
39     /* Resize color coefficient matrix */
40 greg 2.5 extern CMATRIX *cm_resize(CMATRIX *cm, int nrows);
41 greg 2.1
42     #define cm_free(cm) free(cm)
43    
44 greg 2.5 /* Load header to obtain/check data type and matrix dimensions */
45     extern char *cm_getheader(int *dt, int *nr, int *nc, FILE *fp);
46 greg 2.1
47 greg 2.7 /* Allocate and load a matrix from the given input (or stdin if NULL) */
48     extern CMATRIX *cm_load(const char *inspec, int nrows, int ncols, int dtype);
49 greg 2.1
50     /* Extract a column vector from a matrix */
51 greg 2.5 extern CMATRIX *cm_column(const CMATRIX *cm, int c);
52 greg 2.1
53     /* Scale a matrix by a single value */
54 greg 2.5 extern CMATRIX *cm_scale(const CMATRIX *cm1, const COLOR sca);
55 greg 2.1
56     /* Multiply two matrices (or a matrix and a vector) and allocate the result */
57 greg 2.5 extern CMATRIX *cm_multiply(const CMATRIX *cm1, const CMATRIX *cm2);
58 greg 2.1
59 greg 2.4 /* write out matrix to file (precede by resolution string if picture) */
60 greg 2.5 extern int cm_write(const CMATRIX *cm, int dtype, FILE *fp);
61 greg 2.1
62 greg 2.3 /* Load and convert a matrix BTDF from the given XML file */
63 greg 2.5 extern CMATRIX *cm_loadBTDF(char *fname);
64 greg 2.1
65     #ifdef __cplusplus
66     }
67     #endif
68     #endif /* _RAD_CMATRIX_H_ */