1 /**********
2 *
3 * This file is part of the TINA Open Source Image Analysis Environment
4 * henceforth known as TINA
5 *
6 * TINA is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation.
9 *
10 * TINA is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with TINA; if not, write to the Free Software Foundation, Inc.,
17 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 **********
20 *
21 * Program : TINA
22 * File : $Source: /home/tina/cvs/tina-libs/tina/geometry/geomCurve_cone.c,v $
23 * Date : $Date: 2005/01/09 17:49:25 $
24 * Version : $Revision: 1.2 $
25 * CVS Id : $Id: geomCurve_cone.c,v 1.2 2005/01/09 17:49:25 paul Exp $
26 *
27 * Author : Legacy TINA
28 *
29 * Notes : functions for manipulating generic cones
30 *
31 *********
32 */
33
34 #include "geomCurve_cone.h"
35
36 #if HAVE_CONFIG_H
37 #include <config.h>
38 #endif
39
40 #include <math.h>
41 #include <string.h>
42 #include <tina/sys/sysDef.h>
43 #include <tina/sys/sysPro.h>
44 #include <tina/math/mathDef.h>
45 #include <tina/math/mathPro.h>
46 #include <tina/geometry/geom_CurveDef.h>
47 #include <tina/geometry/geomCurve_conic3.h>
48 #ifdef _PCC
49 #include <memory.h>
50 #endif
51
52 Cone *cone_alloc(int type)
53 {
54 Cone *cone = ts_ralloc(Cone);
55
56 cone->type = type;
57 cone->label = new_label();
58 cone->c1 = cone->c2 = NULL;
59 cone->offset = 0;
60 cone->props = NULL;
61 return (cone);
62 }
63
64 Cone *cone_make(Conic3 * c1, Conic3 * c2, double offset, int type)
65 {
66 Cone *cone = ts_ralloc(Cone);
67
68 cone->type = type;
69 cone->label = new_label();
70 cone->c1 = c1;
71 cone->c2 = c2;
72 cone->offset = offset;
73 cone->props = NULL;
74 return (cone);
75 }
76
77 void cone_free(Cone * cone)
78 {
79 if (cone == NULL)
80 return;
81 proplist_freelist(cone->props);
82 conic3_free(cone->c1);
83 conic3_free(cone->c2);
84 rfree((void *) cone);
85 }
86
87 Cone *cone_copy(Cone * cone)
88 {
89 Cone *copy;
90 List *proplist_copy();
91
92 if (cone == NULL)
93 return (NULL);
94
95 copy = ts_ralloc(Cone);
96 (void) memcpy((char *) copy, (char *) cone, sizeof(Cone));
97 copy->c1 = conic3_copy(cone->c1);
98 copy->c2 = conic3_copy(cone->c2);
99 copy->props = proplist_copy(cone->props);
100 return (copy);
101 }
102
103 Vec3 cone_point(Cone * cone, double u, double t)
104
105 /* cone parameters */
106 {
107 Vec3 p1 = {Vec3_id};
108 Vec3 p2 = {Vec3_id};
109
110 p1 = conic3_point(cone->c1, t);
111 p2 = conic3_point(cone->c2, t + cone->offset);
112
113 return (vec3_sum(vec3_times(1 - u, p1), vec3_times(u, p2)));
114 }
115
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