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root/Development/ray/src/common/xf.c

Comparing ray/src/common/xf.c (file contents):
Revision 1.1 by greg, Thu Feb 2 10:34:41 1989 UTC vs.
Revision 1.2 by greg, Fri Mar 24 16:59:48 1989 UTC

#	Line 13 | Line 13 | static char SCCSid[] = "$SunId$ LBL";
13
14		#define  PI             3.14159265358979323846
15
16	+	#define  checkarg(a,n)  if (strcmp(av[i],a) || i+n >= ac) return(i)
17
18	+
19		int
20		xf(xfmat, xfsca, ac, av)                /* get transform specification */
21		double  xfmat[4][4];
#	Line 33 | Line 35 | char  *av[];
35		switch (av[i][1]) {
36
37		case 't':                       /* translate */
38	+	checkarg("-t",3);
39		m4[3][0] = atof(av[++i]);
40		m4[3][1] = atof(av[++i]);
41		m4[3][2] = atof(av[++i]);
#	Line 41 | Line 44 | char  *av[];
44		case 'r':                       /* rotate */
45		switch (av[i][2]) {
46		case 'x':
47	+	checkarg("-rx",1);
48		theta = PI/180.0 * atof(av[++i]);
49		m4[1][1] = m4[2][2] = cos(theta);
50		m4[2][1] = -(m4[1][2] = sin(theta));
51		break;
52		case 'y':
53	+	checkarg("-ry",1);
54		theta = PI/180 * atof(av[++i]);
55		m4[0][0] = m4[2][2] = cos(theta);
56		m4[0][2] = -(m4[2][0] = sin(theta));
57		break;
58		case 'z':
59	+	checkarg("-rz",1);
60		theta = PI/180 * atof(av[++i]);
61		m4[0][0] = m4[1][1] = cos(theta);
62		m4[1][0] = -(m4[0][1] = sin(theta));
#	Line 61 | Line 67 | char  *av[];
67		break;
68
69		case 's':                       /* scale */
70	+	checkarg("-s",1);
71		*xfsca *=
72		m4[0][0] =
73		m4[1][1] =
#	Line 70 | Line 77 | char  *av[];
77		case 'm':                       /* mirror */
78		switch (av[i][2]) {
79		case 'x':
80	+	checkarg("-mx",0);
81		*xfsca *=
82		m4[0][0] = -1.0;
83		break;
84		case 'y':
85	+	checkarg("-my",0);
86		*xfsca *=
87		m4[1][1] = -1.0;
88		break;
89		case 'z':
90	+	checkarg("-mz",0);
91		*xfsca *=
92		m4[2][2] = -1.0;
93		break;
#	Line 116 | Line 126 | char  *av[];
126		switch (av[i][1]) {
127
128		case 't':                       /* translate */
129	+	checkarg("-t",3);
130		m4[3][0] = -atof(av[++i]);
131		m4[3][1] = -atof(av[++i]);
132		m4[3][2] = -atof(av[++i]);
#	Line 124 | Line 135 | char  *av[];
135		case 'r':                       /* rotate */
136		switch (av[i][2]) {
137		case 'x':
138	+	checkarg("-rx",1);
139		theta = -PI/180.0 * atof(av[++i]);
140		m4[1][1] = m4[2][2] = cos(theta);
141		m4[2][1] = -(m4[1][2] = sin(theta));
142		break;
143		case 'y':
144	+	checkarg("-ry",1);
145		theta = -PI/180.0 * atof(av[++i]);
146		m4[0][0] = m4[2][2] = cos(theta);
147		m4[0][2] = -(m4[2][0] = sin(theta));
148		break;
149		case 'z':
150	+	checkarg("-rz",1);
151		theta = -PI/180.0 * atof(av[++i]);
152		m4[0][0] = m4[1][1] = cos(theta);
153		m4[1][0] = -(m4[0][1] = sin(theta));
#	Line 144 | Line 158 | char  *av[];
158		break;
159
160		case 's':                       /* scale */
161	+	checkarg("-s",1);
162		*xfsca *=
163		m4[0][0] =
164		m4[1][1] =
#	Line 153 | Line 168 | char  *av[];
168		case 'm':                       /* mirror */
169		switch (av[i][2]) {
170		case 'x':
171	+	checkarg("-mx",0);
172		*xfsca *=
173		m4[0][0] = -1.0;
174		break;
175		case 'y':
176	+	checkarg("-my",0);
177		*xfsca *=
178		m4[1][1] = -1.0;
179		break;
180		case 'z':
181	+	checkarg("-mz",0);
182		*xfsca *=
183		m4[2][2] = -1.0;
184		break;

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