1 | #ifndef GIM_CONTACT_H_INCLUDED |
---|
2 | #define GIM_CONTACT_H_INCLUDED |
---|
3 | |
---|
4 | /*! \file gim_contact.h |
---|
5 | \author Francisco León |
---|
6 | */ |
---|
7 | /* |
---|
8 | ----------------------------------------------------------------------------- |
---|
9 | This source file is part of GIMPACT Library. |
---|
10 | |
---|
11 | For the latest info, see http://gimpact.sourceforge.net/ |
---|
12 | |
---|
13 | Copyright (c) 2006 Francisco Leon. C.C. 80087371. |
---|
14 | email: projectileman@yahoo.com |
---|
15 | |
---|
16 | This library is free software; you can redistribute it and/or |
---|
17 | modify it under the terms of EITHER: |
---|
18 | (1) The GNU Lesser General Public License as published by the Free |
---|
19 | Software Foundation; either version 2.1 of the License, or (at |
---|
20 | your option) any later version. The text of the GNU Lesser |
---|
21 | General Public License is included with this library in the |
---|
22 | file GIMPACT-LICENSE-LGPL.TXT. |
---|
23 | (2) The BSD-style license that is included with this library in |
---|
24 | the file GIMPACT-LICENSE-BSD.TXT. |
---|
25 | |
---|
26 | This library is distributed in the hope that it will be useful, |
---|
27 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
28 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files |
---|
29 | GIMPACT-LICENSE-LGPL.TXT and GIMPACT-LICENSE-BSD.TXT for more details. |
---|
30 | |
---|
31 | ----------------------------------------------------------------------------- |
---|
32 | */ |
---|
33 | |
---|
34 | |
---|
35 | #include "GIMPACT/gim_geometry.h" |
---|
36 | #include "GIMPACT/gim_radixsort.h" |
---|
37 | |
---|
38 | /*! \defgroup CONTACTS |
---|
39 | \brief |
---|
40 | Functions for managing and sorting contacts resulting from a collision query. |
---|
41 | <ul> |
---|
42 | <li> Contact lists must be create by calling \ref GIM_CREATE_CONTACT_LIST |
---|
43 | <li> After querys, contact lists must be destroy by calling \ref GIM_DYNARRAY_DESTROY |
---|
44 | <li> Contacts can be merge for avoid duplicate results by calling \ref gim_merge_contacts |
---|
45 | </ul> |
---|
46 | |
---|
47 | */ |
---|
48 | //! @{ |
---|
49 | /// Structure for collision results |
---|
50 | struct GIM_CONTACT |
---|
51 | { |
---|
52 | vec3f m_point; |
---|
53 | vec3f m_normal; |
---|
54 | GREAL m_depth;//Positive value indicates interpenetration |
---|
55 | void * m_handle1; |
---|
56 | void * m_handle2; |
---|
57 | GUINT m_feature1;//Face number |
---|
58 | GUINT m_feature2;//Face number |
---|
59 | }; |
---|
60 | //typedef struct _GIM_CONTACT GIM_CONTACT; |
---|
61 | |
---|
62 | #define CONTACT_DIFF_EPSILON 0.00001f |
---|
63 | |
---|
64 | #define GIM_CALC_KEY_CONTACT(pos,hash)\ |
---|
65 | {\ |
---|
66 | GINT _coords[] = {(GINT)(pos[0]*1000.0f+1.0f),(GINT)(pos[1]*1333.0f),(GINT)(pos[2]*2133.0f+3.0f)};\ |
---|
67 | GUINT _hash=0;\ |
---|
68 | GUINT *_uitmp = (GUINT *)(&_coords[0]);\ |
---|
69 | _hash = *_uitmp;\ |
---|
70 | _uitmp++;\ |
---|
71 | _hash += (*_uitmp)<<4;\ |
---|
72 | _uitmp++;\ |
---|
73 | _hash += (*_uitmp)<<8;\ |
---|
74 | hash = _hash;\ |
---|
75 | }\ |
---|
76 | |
---|
77 | ///Creates a contact list for queries |
---|
78 | #define GIM_CREATE_CONTACT_LIST(contact_array) GIM_DYNARRAY_CREATE(GIM_CONTACT,contact_array,100) |
---|
79 | |
---|
80 | #define GIM_PUSH_CONTACT(contact_array, point, normal, deep,handle1, handle2, feat1, feat2)\ |
---|
81 | {\ |
---|
82 | GIM_DYNARRAY_PUSH_EMPTY(GIM_CONTACT,contact_array);\ |
---|
83 | GIM_CONTACT * _last = GIM_DYNARRAY_POINTER_LAST(GIM_CONTACT,contact_array);\ |
---|
84 | VEC_COPY(_last->m_point,point);\ |
---|
85 | VEC_COPY(_last->m_normal,normal);\ |
---|
86 | _last->m_depth = deep;\ |
---|
87 | _last->m_handle1 = handle1;\ |
---|
88 | _last->m_handle2 = handle2;\ |
---|
89 | _last->m_feature1 = feat1;\ |
---|
90 | _last->m_feature2 = feat2;\ |
---|
91 | }\ |
---|
92 | |
---|
93 | ///Receive pointer to contacts |
---|
94 | #define GIM_COPY_CONTACTS(dest_contact, source_contact)\ |
---|
95 | {\ |
---|
96 | VEC_COPY(dest_contact->m_point,source_contact->m_point);\ |
---|
97 | VEC_COPY(dest_contact->m_normal,source_contact->m_normal);\ |
---|
98 | dest_contact->m_depth = source_contact->m_depth;\ |
---|
99 | dest_contact->m_handle1 = source_contact->m_handle1;\ |
---|
100 | dest_contact->m_handle2 = source_contact->m_handle2;\ |
---|
101 | dest_contact->m_feature1 = source_contact->m_feature1;\ |
---|
102 | dest_contact->m_feature2 = source_contact->m_feature2;\ |
---|
103 | }\ |
---|
104 | |
---|
105 | //! Merges duplicate contacts with minimum depth criterion |
---|
106 | void gim_merge_contacts(GDYNAMIC_ARRAY * source_contacts, |
---|
107 | GDYNAMIC_ARRAY * dest_contacts); |
---|
108 | |
---|
109 | |
---|
110 | //! Merges to an unique contact |
---|
111 | void gim_merge_contacts_unique(GDYNAMIC_ARRAY * source_contacts, |
---|
112 | GDYNAMIC_ARRAY * dest_contacts); |
---|
113 | |
---|
114 | //! @} |
---|
115 | #endif // GIM_CONTACT_H_INCLUDED |
---|