== Limit Distance Constraint ==

Added a new constraint, "Limit Distance". This constraint defines a 'virtual sphere' around the target which the owner can be made to stay inside, outside, or on the surface of it. 

This constraint is best used when applied using the Ctrl-Alt-C hotkey, as the radius is set correctly that way. 
One usage, is to prevent the target of an IK-chain from straying away from the chain. Care should be taken to not use a member of the IK-chain as the target though.

Description of Variables:
* 'Dist' - Radius of virtual sphere
* 'R' - Click on this to recalculate the 'Dist' value (note: like the 'R' button in the StretchTo constraint, this is currently buggy)
' Mode' - This menu gives different options for how the limiting sphere should act. The mode names are self explanatory.
* 'Soft' and 'SoftDistance' - currently not functional (so settings are hidden). These are used to define a smaller radius around the sphere of influence where a non-linear relationship between input and resulting locations occurs to prevent the owner 'crashing' into the sphere.

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 8481e7c0a3a..f3a3a3478ac 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -1752,6 +1752,13 @@ static void lib_link_constraints(FileData *fd, ID *id, ListBase *conlist)
 				data->tar = newlibadr(fd, id->lib, data->tar);
 			}
 			break;
+		case CONSTRAINT_TYPE_DISTLIMIT:
+			{
+				bDistLimitConstraint *data;
+				data= ((bDistLimitConstraint*)con->data);
+				data->tar = newlibadr(fd, id->lib, data->tar);
+			}
+			break;
 		case CONSTRAINT_TYPE_NULL:
 			break;
 		}
@@ -1765,6 +1772,7 @@ static void direct_link_constraints(FileData *fd, ListBase *lb)
 	link_list(fd, lb);
 	for (cons=lb->first; cons; cons=cons->next) {
 		cons->data = newdataadr(fd, cons->data);
+		
 		if (cons->type == CONSTRAINT_TYPE_PYTHON) {
 			bPythonConstraint *data= cons->data;
 			link_list(fd, &data->targets);
@@ -7807,6 +7815,12 @@ static void expand_constraints(FileData *fd, Main *mainvar, ListBase *lb)
 				expand_doit(fd, mainvar, data->tar);
 			}
 			break;
+		case CONSTRAINT_TYPE_DISTLIMIT:	
+			{
+				bDistLimitConstraint *data = (bDistLimitConstraint*)curcon->data;
+				expand_doit(fd, mainvar, data->tar);
+			}
+			break;
 		default:
 			break;
 		}