1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): 2007 - Joshua Leung (major recode)
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef BKE_CONSTRAINT_H
#define BKE_CONSTRAINT_H
struct bConstraint;
struct bConstraintTarget;
struct ListBase;
struct Object;
struct Scene;
struct bPoseChannel;
/* ---------------------------------------------------------------------------- */
/* special struct for use in constraint evaluation */
typedef struct bConstraintOb {
struct Scene *scene; /* for system time, part of deglobalization, code nicer later with local time (ton) */
struct Object *ob; /* if pchan, then armature that it comes from, otherwise constraint owner */
struct bPoseChannel *pchan; /* pose channel that owns the constraints being evaluated */
float matrix[4][4]; /* matrix where constraints are accumulated + solved */
float startmat[4][4]; /* original matrix (before constraint solving) */
short type; /* type of owner */
short rotOrder; /* rotation order for constraint owner (as defined in eEulerRotationOrders in BLI_arithb.h) */
} bConstraintOb;
/* ---------------------------------------------------------------------------- */
/* Constraint Type-Info (shorthand in code = cti):
* This struct provides function pointers for runtime, so that functions can be
* written more generally (with fewer/no special exceptions for various constraints).
*
* Callers of these functions must check that they actually point to something useful,
* as some constraints don't define some of these.
*
* Warning: it is not too advisable to reorder order of members of this struct,
* as you'll have to edit quite a few ($NUM_CONSTRAINT_TYPES) of these
* structs.
*/
typedef struct bConstraintTypeInfo {
/* admin/ident */
short type; /* CONSTRAINT_TYPE_### */
short size; /* size in bytes of the struct */
char name[32]; /* name of constraint in interface */
char structName[32]; /* name of struct for SDNA */
/* data management function pointers - special handling */
/* free any data that is allocated separately (optional) */
void (*free_data)(struct bConstraint *con);
/* adjust pointer to other ID-data using ID_NEW(), but not to targets (optional) */
void (*relink_data)(struct bConstraint *con);
/* copy any special data that is allocated separately (optional) */
void (*copy_data)(struct bConstraint *con, struct bConstraint *src);
/* set settings for data that will be used for bConstraint.data (memory already allocated using MEM_callocN) */
void (*new_data)(void *cdata);
/* target handling function pointers */
/* for multi-target constraints: return that list; otherwise make a temporary list (returns number of targets) */
int (*get_constraint_targets)(struct bConstraint *con, struct ListBase *list);
/* for single-target constraints only: flush data back to source data, and the free memory used */
void (*flush_constraint_targets)(struct bConstraint *con, struct ListBase *list, short nocopy);
/* evaluation */
/* set the ct->matrix for the given constraint target (at the given ctime) */
void (*get_target_matrix)(struct bConstraint *con, struct bConstraintOb *cob, struct bConstraintTarget *ct, float ctime);
/* evaluate the constraint for the given time */
void (*evaluate_constraint)(struct bConstraint *con, struct bConstraintOb *cob, struct ListBase *targets);
} bConstraintTypeInfo;
/* Function Prototypes for bConstraintTypeInfo's */
bConstraintTypeInfo *constraint_get_typeinfo(struct bConstraint *con);
bConstraintTypeInfo *get_constraint_typeinfo(int type);
/* ---------------------------------------------------------------------------- */
/* Useful macros for testing various common flag combinations */
/* Constraint Target Macros */
#define VALID_CONS_TARGET(ct) ((ct) && (ct->tar))
/* ---------------------------------------------------------------------------- */
/* Constraint function prototypes */
void unique_constraint_name(struct bConstraint *con, struct ListBase *list);
void free_constraints(struct ListBase *list);
void copy_constraints(struct ListBase *dst, struct ListBase *src);
void relink_constraints(struct ListBase *list);
void free_constraint_data(struct bConstraint *con);
struct bConstraint *constraints_get_active(struct ListBase *list);
/* Constraints + Proxies function prototypes */
void extract_proxylocal_constraints(struct ListBase *dst, struct ListBase *src);
short proxylocked_constraints_owner(struct Object *ob, struct bPoseChannel *pchan);
/* Constraint Evaluation function prototypes */
struct bConstraintOb *constraints_make_evalob(struct Scene *scene, struct Object *ob, void *subdata, short datatype);
void constraints_clear_evalob(struct bConstraintOb *cob);
void constraint_mat_convertspace(struct Object *ob, struct bPoseChannel *pchan, float mat[][4], short from, short to);
void get_constraint_target_matrix(struct bConstraint *con, int n, short ownertype, void *ownerdata, float mat[][4], float ctime);
void solve_constraints(struct ListBase *conlist, struct bConstraintOb *cob, float ctime);
#endif
|
