src/rt/p_data.c

#ifndef lint
static const char       RCSid[] = "$Id: p_data.c,v 2.8 2004/03/30 16:13:01 schorsch Exp $";
#endif
/*
 *  p_data.c - routine for stored patterns.
 */

#include "copyright.h"

#include  "ray.h"
#include  "data.h"
#include  "func.h"
#include  "rtotypes.h"

/*
 *      A stored pattern can either be brightness or
 *  color data.  Brightness data is specified as:
 *
 *      modifier brightdata name
 *      4+ func dfname vfname v0 v1 .. xf
 *      0
 *      n A1 A2 ..
 *
 *  Color data is specified as:
 *
 *      modifier colordata name
 *      8+ rfunc gfunc bfunc rdfname gdfname bdfname vfname v0 v1 .. xf
 *      0
 *      n A1 A2 ..
 *
 *  Color picture data is specified as:
 *
 *      modifier colorpict name
 *      7+ rfunc gfunc bfunc pfname vfname vx vy xf
 *      0
 *      n A1 A2 ..
 *
 *  Vfname is the name of the file where the variable definitions
 *  can be found.  The list of real arguments can be accessed by
 *  definitions in the file.  The dfnames are the data file
 *  names.  The dimensions of the data files and the number
 *  of variables must match.  The funcs take a single argument
 *  for brightdata, and three for colordata and colorpict to produce
 *  interpolated values from the file.  The xf is a transformation
 *  to get from the original coordinates to the current coordinates.
 */


int
p_bdata(                        /* interpolate brightness data */
        OBJREC  *m,
        RAY  *r
)
{
        double  bval;
        double  pt[MAXDIM];
        DATARRAY  *dp;
        MFUNC  *mf;
        int  i;

        if (m->oargs.nsargs < 4)
                objerror(m, USER, "bad # arguments");
        dp = getdata(m->oargs.sarg[1]);
        i = (1 << dp->nd) - 1;
        mf = getfunc(m, 2, i<<3, 0);
        setfunc(m, r);
        errno = 0;
        for (i = dp->nd; i-- > 0; ) {
                pt[i] = evalue(mf->ep[i]);
                if (errno == EDOM || errno == ERANGE)
                        goto computerr;
        }
        bval = datavalue(dp, pt);
        errno = 0;
        bval = funvalue(m->oargs.sarg[0], 1, &bval);
        if (errno == EDOM || errno == ERANGE)
                goto computerr;
        scalecolor(r->pcol, bval);
        return(0);
computerr:
        objerror(m, WARNING, "compute error");
        return(0);
}


int
p_cdata(                        /* interpolate color data */
        OBJREC  *m,
        RAY  *r
)
{
        double  col[3];
        COLOR  cval;
        double  pt[MAXDIM];
        int  nv;
        DATARRAY  *dp;
        MFUNC  *mf;
        int  i;

        if (m->oargs.nsargs < 8)
                objerror(m, USER, "bad # arguments");
        dp = getdata(m->oargs.sarg[3]);
        i = (1 << (nv = dp->nd)) - 1;
        mf = getfunc(m, 6, i<<7, 0);
        setfunc(m, r);
        errno = 0;
        for (i = 0; i < nv; i++) {
                pt[i] = evalue(mf->ep[i]);
                if (errno == EDOM || errno == ERANGE)
                        goto computerr;
        }
        col[0] = datavalue(dp, pt);
        for (i = 1; i < 3; i++) {
                dp = getdata(m->oargs.sarg[i+3]);
                if (dp->nd != nv)
                        objerror(m, USER, "dimension error");
                col[i] = datavalue(dp, pt);
        }
        errno = 0;
        for (i = 0; i < 3; i++)
                if (fundefined(m->oargs.sarg[i]) < 3)
                        colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i);
                else
                        colval(cval,i) = funvalue(m->oargs.sarg[i], 3, col);
        if (errno == EDOM || errno == ERANGE)
                goto computerr;
        multcolor(r->pcol, cval);
        return(0);
computerr:
        objerror(m, WARNING, "compute error");
        return(0);
}


int
p_pdata(                        /* interpolate picture data */
        OBJREC  *m,
        RAY  *r
)
{
        double  col[3];
        COLOR  cval;
        double  pt[2];
        DATARRAY  *dp;
        MFUNC  *mf;
        int  i;

        if (m->oargs.nsargs < 7)
                objerror(m, USER, "bad # arguments");
        mf = getfunc(m, 4, 0x3<<5, 0);
        setfunc(m, r);
        errno = 0;
        pt[1] = evalue(mf->ep[0]);      /* y major ordering */
        pt[0] = evalue(mf->ep[1]);
        if (errno == EDOM || errno == ERANGE)
                goto computerr;
        dp = getpict(m->oargs.sarg[3]);
        for (i = 0; i < 3; i++)
                col[i] = datavalue(dp+i, pt);
        errno = 0;
        for (i = 0; i < 3; i++)
                if (fundefined(m->oargs.sarg[i]) < 3)
                        colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i);
                else
                        colval(cval,i) = funvalue(m->oargs.sarg[i], 3, col);
        if (errno == EDOM || errno == ERANGE)
                goto computerr;
        multcolor(r->pcol, cval);
        return(0);

computerr:
        objerror(m, WARNING, "compute error");
        return(0);
}
Revision:	2.9
Committed:	Tue Jul 8 18:25:00 2014 UTC (9 years, 9 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R4, rad5R2, rad4R2P2, rad5R0, rad5R1, rad4R2, rad4R2P1, rad5R3
Changes since 2.8:	+13 -13 lines
Log Message:	Eliminated unnecessary "extern" and "register" modifiers
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.9	static const char RCSid[] = "$Id: p_data.c,v 2.8 2004/03/30 16:13:01 schorsch Exp $";
3	greg	1.1	#endif
4			/*
5			* p_data.c - routine for stored patterns.
6	greg	2.5	*/
7
8	greg	2.6	#include "copyright.h"
9	greg	1.1
10			#include "ray.h"
11			#include "data.h"
12	greg	2.2	#include "func.h"
13	schorsch	2.8	#include "rtotypes.h"
14	greg	2.2
15	greg	1.1	/*
16			* A stored pattern can either be brightness or
17			* color data. Brightness data is specified as:
18			*
19			* modifier brightdata name
20			* 4+ func dfname vfname v0 v1 .. xf
21			* 0
22			* n A1 A2 ..
23			*
24			* Color data is specified as:
25			*
26			* modifier colordata name
27			* 8+ rfunc gfunc bfunc rdfname gdfname bdfname vfname v0 v1 .. xf
28			* 0
29			* n A1 A2 ..
30			*
31			* Color picture data is specified as:
32			*
33			* modifier colorpict name
34			* 7+ rfunc gfunc bfunc pfname vfname vx vy xf
35			* 0
36			* n A1 A2 ..
37			*
38			* Vfname is the name of the file where the variable definitions
39			* can be found. The list of real arguments can be accessed by
40			* definitions in the file. The dfnames are the data file
41			* names. The dimensions of the data files and the number
42			* of variables must match. The funcs take a single argument
43			* for brightdata, and three for colordata and colorpict to produce
44			* interpolated values from the file. The xf is a transformation
45			* to get from the original coordinates to the current coordinates.
46			*/
47
48
49	greg	2.9	int
50	schorsch	2.8	p_bdata( /* interpolate brightness data */
51	greg	2.9	OBJREC *m,
52	schorsch	2.8	RAY *r
53			)
54	greg	1.1	{
55			double bval;
56			double pt[MAXDIM];
57			DATARRAY *dp;
58	greg	2.9	MFUNC *mf;
59			int i;
60	greg	1.1
61			if (m->oargs.nsargs < 4)
62			objerror(m, USER, "bad # arguments");
63	greg	2.2	dp = getdata(m->oargs.sarg[1]);
64			i = (1 << dp->nd) - 1;
65			mf = getfunc(m, 2, i<<3, 0);
66			setfunc(m, r);
67	greg	1.2	errno = 0;
68	greg	2.2	for (i = dp->nd; i-- > 0; ) {
69			pt[i] = evalue(mf->ep[i]);
70	greg	2.7	if (errno == EDOM \|\| errno == ERANGE)
71	greg	2.2	goto computerr;
72	greg	1.1	}
73			bval = datavalue(dp, pt);
74			errno = 0;
75	greg	2.2	bval = funvalue(m->oargs.sarg[0], 1, &bval);
76	greg	2.7	if (errno == EDOM \|\| errno == ERANGE)
77	greg	1.1	goto computerr;
78			scalecolor(r->pcol, bval);
79	greg	2.4	return(0);
80	greg	1.1	computerr:
81			objerror(m, WARNING, "compute error");
82	greg	2.4	return(0);
83	greg	1.1	}
84
85
86	greg	2.9	int
87	schorsch	2.8	p_cdata( /* interpolate color data */
88	greg	2.9	OBJREC *m,
89	schorsch	2.8	RAY *r
90			)
91	greg	1.1	{
92			double col[3];
93			COLOR cval;
94			double pt[MAXDIM];
95	greg	2.2	int nv;
96	greg	1.1	DATARRAY *dp;
97	greg	2.9	MFUNC *mf;
98			int i;
99	greg	1.1
100			if (m->oargs.nsargs < 8)
101			objerror(m, USER, "bad # arguments");
102	greg	2.2	dp = getdata(m->oargs.sarg[3]);
103			i = (1 << (nv = dp->nd)) - 1;
104			mf = getfunc(m, 6, i<<7, 0);
105			setfunc(m, r);
106			errno = 0;
107			for (i = 0; i < nv; i++) {
108			pt[i] = evalue(mf->ep[i]);
109	greg	2.7	if (errno == EDOM \|\| errno == ERANGE)
110	greg	1.1	goto computerr;
111			}
112	greg	2.2	col[0] = datavalue(dp, pt);
113			for (i = 1; i < 3; i++) {
114			dp = getdata(m->oargs.sarg[i+3]);
115	greg	1.1	if (dp->nd != nv)
116	greg	2.2	objerror(m, USER, "dimension error");
117	greg	1.1	col[i] = datavalue(dp, pt);
118			}
119			errno = 0;
120	greg	2.3	for (i = 0; i < 3; i++)
121			if (fundefined(m->oargs.sarg[i]) < 3)
122			colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i);
123			else
124			colval(cval,i) = funvalue(m->oargs.sarg[i], 3, col);
125	greg	2.7	if (errno == EDOM \|\| errno == ERANGE)
126	greg	1.1	goto computerr;
127			multcolor(r->pcol, cval);
128	greg	2.4	return(0);
129	greg	1.1	computerr:
130			objerror(m, WARNING, "compute error");
131	greg	2.4	return(0);
132	greg	1.1	}
133
134
135	greg	2.9	int
136	schorsch	2.8	p_pdata( /* interpolate picture data */
137	greg	2.9	OBJREC *m,
138	schorsch	2.8	RAY *r
139			)
140	greg	1.1	{
141			double col[3];
142			COLOR cval;
143			double pt[2];
144			DATARRAY *dp;
145	greg	2.9	MFUNC *mf;
146			int i;
147	greg	1.1
148			if (m->oargs.nsargs < 7)
149			objerror(m, USER, "bad # arguments");
150	greg	2.2	mf = getfunc(m, 4, 0x3<<5, 0);
151			setfunc(m, r);
152	greg	1.4	errno = 0;
153	greg	2.2	pt[1] = evalue(mf->ep[0]); /* y major ordering */
154			pt[0] = evalue(mf->ep[1]);
155	greg	2.7	if (errno == EDOM \|\| errno == ERANGE)
156	greg	1.4	goto computerr;
157	greg	2.2	dp = getpict(m->oargs.sarg[3]);
158	greg	1.1	for (i = 0; i < 3; i++)
159			col[i] = datavalue(dp+i, pt);
160			errno = 0;
161	greg	2.3	for (i = 0; i < 3; i++)
162			if (fundefined(m->oargs.sarg[i]) < 3)
163			colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i);
164			else
165			colval(cval,i) = funvalue(m->oargs.sarg[i], 3, col);
166	greg	2.7	if (errno == EDOM \|\| errno == ERANGE)
167	greg	1.1	goto computerr;
168			multcolor(r->pcol, cval);
169	greg	2.4	return(0);
170	greg	1.1
171			computerr:
172			objerror(m, WARNING, "compute error");
173	greg	2.4	return(0);
174	greg	1.1	}