Revision: 26637
          
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=26637
Author:   aligorith
Date:     2010-02-06 12:28:22 +0100 (Sat, 06 Feb 2010)

Log Message:
-----------
Constraints API: ID-Loopers

Added a system for running a callback on all the ID-blocks referenced by 
constraints (like for modifiers). Also, added an API function which calls these 
on the constraints present in the given list.

These could be used for:
- the proxies + action/pyconstraint fix that campbell committed
- simplification of file loading code

Modified Paths:
--------------
    trunk/blender/source/blender/blenkernel/BKE_constraint.h
    trunk/blender/source/blender/blenkernel/intern/constraint.c

Modified: trunk/blender/source/blender/blenkernel/BKE_constraint.h
===================================================================
--- trunk/blender/source/blender/blenkernel/BKE_constraint.h    2010-02-06 
10:50:34 UTC (rev 26636)
+++ trunk/blender/source/blender/blenkernel/BKE_constraint.h    2010-02-06 
11:28:22 UTC (rev 26637)
@@ -30,6 +30,7 @@
 #ifndef BKE_CONSTRAINT_H
 #define BKE_CONSTRAINT_H
 
+struct ID;
 struct bConstraint;
 struct bConstraintTarget;
 struct ListBase;
@@ -57,6 +58,11 @@
 
 /* 
---------------------------------------------------------------------------- */
 
+/* Callback format for performing operations on ID-pointers for Constraints */
+typedef void (*ConstraintIDFunc)(struct bConstraint *con, struct ID **idpoin, 
void *userdata);
+
+/* ....... */
+
 /* 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).
@@ -80,6 +86,8 @@
        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);
+               /* run the provided callback function on all the ID-blocks 
linked to the constraint */
+       void (*id_looper)(struct bConstraint *con, ConstraintIDFunc func, void 
*userdata);
                /* 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) */
@@ -116,6 +124,7 @@
 void free_constraints(struct ListBase *list);
 void copy_constraints(struct ListBase *dst, const struct ListBase *src);
 void relink_constraints(struct ListBase *list);
+void id_loop_constraints(struct ListBase *list, ConstraintIDFunc func, void 
*userdata);
 void free_constraint_data(struct bConstraint *con);
 
 /* Constraint API function prototypes */

Modified: trunk/blender/source/blender/blenkernel/intern/constraint.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/constraint.c 2010-02-06 
10:50:34 UTC (rev 26636)
+++ trunk/blender/source/blender/blenkernel/intern/constraint.c 2010-02-06 
11:28:22 UTC (rev 26637)
@@ -648,6 +648,7 @@
        "bConstrNameConstraint", /* struct name */
        constrname_free, /* free data */
        constrname_relink, /* relink data */
+       constrname_id_looper, /* id looper */
        constrname_copy, /* copy data */
        constrname_new_data, /* new data */
        constrname_get_tars, /* get constraint targets */
@@ -774,6 +775,14 @@
        unit_m4(data->invmat);
 }
 
+static void childof_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bChildOfConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int childof_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -858,6 +867,7 @@
        "bChildOfConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       childof_id_looper, /* id looper */
        NULL, /* copy data */
        childof_new_data, /* new data */
        childof_get_tars, /* get constraint targets */
@@ -876,6 +886,14 @@
        data->reserved2 = UP_Z;
 }      
 
+static void trackto_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bTrackToConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int trackto_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1037,6 +1055,7 @@
        "bTrackToConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       trackto_id_looper, /* id looper */
        NULL, /* copy data */
        trackto_new_data, /* new data */
        trackto_get_tars, /* get constraint targets */
@@ -1058,6 +1077,17 @@
        data->flag= CONSTRAINT_IK_TIP|CONSTRAINT_IK_STRETCH|CONSTRAINT_IK_POS;
 }
 
+static void kinematic_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bKinematicConstraint *data= con->data;
+       
+       /* chain target */
+       func(con, (ID**)&data->tar, userdata);
+       
+       /* poletarget */
+       func(con, (ID**)&data->poletar, userdata);
+}
+
 static int kinematic_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1120,6 +1150,7 @@
        "bKinematicConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       kinematic_id_looper, /* id looper */
        NULL, /* copy data */
        kinematic_new_data, /* new data */
        kinematic_get_tars, /* get constraint targets */
@@ -1140,6 +1171,14 @@
        data->followflag = 0;
 }
 
+static void followpath_id_looper (bConstraint *con, ConstraintIDFunc func, 
void *userdata)
+{
+       bFollowPathConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int followpath_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1283,6 +1322,7 @@
        "bFollowPathConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       followpath_id_looper, /* id looper */
        NULL, /* copy data */
        followpath_new_data, /* new data */
        followpath_get_tars, /* get constraint targets */
@@ -1331,6 +1371,7 @@
        "bLocLimitConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       NULL, /* id looper */
        NULL, /* copy data */
        NULL, /* new data */
        NULL, /* get constraint targets */
@@ -1388,6 +1429,7 @@
        "bRotLimitConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       NULL, /* id looper */
        NULL, /* copy data */
        NULL, /* new data */
        NULL, /* get constraint targets */
@@ -1447,6 +1489,7 @@
        "bSizeLimitConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       NULL, /* id looper */
        NULL, /* copy data */
        NULL, /* new data */
        NULL, /* get constraint targets */
@@ -1464,6 +1507,14 @@
        data->flag = LOCLIKE_X|LOCLIKE_Y|LOCLIKE_Z;
 }
 
+static void loclike_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bLocateLikeConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int loclike_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1529,6 +1580,7 @@
        "bLocateLikeConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       loclike_id_looper, /* id looper */
        NULL, /* copy data */
        loclike_new_data, /* new data */
        loclike_get_tars, /* get constraint targets */
@@ -1546,6 +1598,14 @@
        data->flag = ROTLIKE_X|ROTLIKE_Y|ROTLIKE_Z;
 }
 
+static void rotlike_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bChildOfConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int rotlike_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1631,6 +1691,7 @@
        "bRotateLikeConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       rotlike_id_looper, /* id looper */
        NULL, /* copy data */
        rotlike_new_data, /* new data */
        rotlike_get_tars, /* get constraint targets */
@@ -1648,6 +1709,14 @@
        data->flag = SIZELIKE_X|SIZELIKE_Y|SIZELIKE_Z;
 }
 
+static void sizelike_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bSizeLikeConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int sizelike_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1719,6 +1788,7 @@
        "bSizeLikeConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       sizelike_id_looper, /* id looper */
        NULL, /* copy data */
        sizelike_new_data, /* new data */
        sizelike_get_tars, /* get constraint targets */
@@ -1729,6 +1799,14 @@
 
 /* ----------- Copy Transforms ------------- */
 
+static void translike_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bTransLikeConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int translike_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -1772,6 +1850,7 @@
        "bTransLikeConstraint", /* struct name */
        NULL, /* free data */
        NULL, /* relink data */
+       translike_id_looper, /* id looper */
        NULL, /* copy data */
        NULL, /* new data */
        translike_get_tars, /* get constraint targets */
@@ -1833,6 +1912,19 @@
        return 0;
 }
 
+static void pycon_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bPythonConstraint *data= con->data;
+       bConstraintTarget *ct;
+       
+       /* targets */
+       for (ct= data->targets.first; ct; ct= ct->next)
+               func(con, (ID**)&ct->tar, userdata);
+               
+       /* script */
+       func(con, (ID**)&data->text, userdata);
+}
+
 /* Whether this approach is maintained remains to be seen (aligorith) */
 static void pycon_get_tarmat (bConstraint *con, bConstraintOb *cob, 
bConstraintTarget *ct, float ctime)
 {
@@ -1894,6 +1986,7 @@
        "bPythonConstraint", /* struct name */
        pycon_free, /* free data */
        pycon_relink, /* relink data */
+       pycon_id_looper, /* id looper */
        pycon_copy, /* copy data */
        pycon_new_data, /* new data */
        pycon_get_tars, /* get constraint targets */
@@ -1921,11 +2014,22 @@
 /* only for setting the ID as extern */
 static void actcon_copy_data (bConstraint *con, bConstraint *srccon)
 {
-       bActionConstraint *src= srccon->data;
+       //bActionConstraint *src= srccon->data;
        bActionConstraint *dst= con->data;
        id_lib_extern((ID *)dst->act); /* would be better solved with something 
like modifiers_foreachIDLink */
 }
 
+static void actcon_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bActionConstraint *data= con->data;
+       
+       /* target */
+       func(con, (ID**)&data->tar, userdata);
+       
+       /* action */
+       func(con, (ID**)&data->act, userdata);
+}
+
 static int actcon_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -2065,6 +2169,7 @@
        "bActionConstraint", /* struct name */
        NULL, /* free data */
        actcon_relink, /* relink data */
+       actcon_id_looper, /* id looper */
        actcon_copy_data, /* copy data */
        actcon_new_data, /* new data */
        actcon_get_tars, /* get constraint targets */
@@ -2083,6 +2188,14 @@
        data->lockflag = LOCK_Z;
 }      
 
+static void locktrack_id_looper (bConstraint *con, ConstraintIDFunc func, void 
*userdata)
+{
+       bLockTrackConstraint *data= con->data;
+       
+       /* target only */
+       func(con, (ID**)&data->tar, userdata);
+}
+
 static int locktrack_get_tars (bConstraint *con, ListBase *list)
 {
        if (con && list) {
@@ -2418,6 +2531,7 @@

@@ Diff output truncated at 10240 characters. @@

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