== Constraints System - Recode 2 ==

Once again, I've recoded the constraints system. This time, the goals were:
* To make it more future-proof by 'modernising' the coding style. The long functions filled with switch statements, have given way to function-pointers with smaller functions for specific purposes.
* To make it support constraints which use multiple targets more readily that it did. In the past, it was assumed that constraints could only have at most one target.

As a result, a lot of code has been shuffled around, and modified. Also, the subversion number has been bumped up.

Known issues:
* PyConstraints, which were the main motivation for supporting multiple-targets, are currently broken. There are some bimport() error that keeps causing problems. I've also temporarily removed the doDriver support, although it may return in another form soon. 
* Constraints BPy-API is currently has a few features which currently don't work yet
* Outliner currently only displays the names of the constraints instead of the fancy subtarget/target/constraint-name display it used to do. What gets displayed here needs further investigation, as the old way was certainly not that great (and is not compatible with the new system too) 

1 files changed, 6 insertions, 4 deletions

diff --git a/source/blender/python/BPY_extern.h b/source/blender/python/BPY_extern.h
index 0e662c38d31..e4986727ab1 100644
--- a/source/blender/python/BPY_extern.h
+++ b/source/blender/python/BPY_extern.h
@@ -46,8 +46,10 @@ struct SpaceScript; /* DNA_space_types.h */
 struct Script; /* BPI_script.h */
 struct ScrArea; /* DNA_screen_types.h */
 struct bScreen; /* DNA_screen_types.h */
+struct bConstraint; /* DNA_constraint_types.h */
 struct bPythonConstraint; /* DNA_constraint_types.h */
-struct bConstraintOb; /* BKE_constraint.h */
+struct bConstraintOb; /* DNA_constraint_types.h */
+struct bConstraintTarget; /* DNA_constraint_types.h*/
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -71,10 +73,10 @@ extern "C" {
 	void BPy_Set_DrawButtonsList(void *list);
 	void BPy_Free_DrawButtonsList(void);
 	
-	void BPY_pyconstraint_eval(struct bPythonConstraint *con, float ownermat[][4], float targetmat[][4]);
-	void BPY_pyconstraint_driver(struct bPythonConstraint *con, struct bConstraintOb *cob, struct Object *target, char subtarget[]);
+	void BPY_pyconstraint_eval(struct bPythonConstraint *con, struct bConstraintOb *cob, struct ListBase *targets);
 	void BPY_pyconstraint_settings(void *arg1, void *arg2);
-	int BPY_pyconstraint_targets(struct bPythonConstraint *con, float targetmat[][4]);
+	void BPY_pyconstraint_target(struct bPythonConstraint *con, struct bConstraintTarget *ct);
+	void BPY_pyconstraint_update(struct Object *owner, struct bConstraint *con);
 	int BPY_is_pyconstraint(struct Text *text);
 	
 	void BPY_start_python( int argc, char **argv );