shrink-wrap constraint, improve and remove some limitations.

- ability to change the space the axis is projected in (so you can choose worldspace or -space, was always local-space before).
- support projecting on a negative axis, without this some very simple clamping is not possible if the direction happened not to be positive.
- add distance limit (same as modifier), without this single meshes surrounding an object would make the constraint impossible to use in some cases (it would snap to the wrong side).

note: this removes the ability to project on multiple axes at once but this option only added up directions and didnt project on multiple axes as you might expect.

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/makesdna/DNA_constraint_types.h b/source/blender/makesdna/DNA_constraint_types.h
index f1b7a7c3cc3..29e49a970d8 100644
--- a/source/blender/makesdna/DNA_constraint_types.h
+++ b/source/blender/makesdna/DNA_constraint_types.h
@@ -407,8 +407,10 @@ typedef struct bShrinkwrapConstraint {
 	struct Object		*target;
 	float		dist;			/* distance to kept from target */
 	short		shrinkType;		/* shrink type (look on MOD shrinkwrap for values) */
-	char		projAxis;		/* axis to project over UP_X, UP_Y, UP_Z */
-	char 		pad[9];
+	char		projAxis;		/* axis to project/constrain */
+	char		projAxisSpace;	/* space to project axis in */
+	float		projLimit;		/* distance to search */
+	char 		pad[4];
 } bShrinkwrapConstraint;
 
 /* Follow Track constraints */