Expose Bullet rotational spring settings in the UI.

Bullet spring constraint already supports rotational springs, but
they are not exposed in blender UI, likely due to a simple oversight.
Supporting them is as simple as adding a few DNA/RNA properties
with appropriate UI and passing them on to Bullet.

Reviewers: sergof

Reviewed By: sergof

Differential Revision: https://developer.blender.org/D2331

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_270.c b/source/blender/blenloader/intern/versioning_270.c
index 14e02c9ffb6..8e855eb56b8 100644
--- a/source/blender/blenloader/intern/versioning_270.c
+++ b/source/blender/blenloader/intern/versioning_270.c
@@ -53,6 +53,7 @@
 #include "DNA_actuator_types.h"
 #include "DNA_view3d_types.h"
 #include "DNA_smoke_types.h"
+#include "DNA_rigidbody_types.h"
 
 #include "DNA_genfile.h"
 
@@ -1438,5 +1439,20 @@ void blo_do_versions_270(FileData *fd, Library *UNUSED(lib), Main *main)
 				}
 			}
 		}
+
+		if (!DNA_struct_elem_find(fd->filesdna, "RigidBodyCon", "float", "spring_stiffness_ang_x")) {
+			Object *ob;
+			for (ob = main->object.first; ob; ob = ob->id.next) {
+				RigidBodyCon *rbc = ob->rigidbody_constraint;
+				if (rbc) {
+					rbc->spring_stiffness_ang_x = 10.0;
+					rbc->spring_stiffness_ang_y = 10.0;
+					rbc->spring_stiffness_ang_z = 10.0;
+					rbc->spring_damping_ang_x = 0.5;
+					rbc->spring_damping_ang_y = 0.5;
+					rbc->spring_damping_ang_z = 0.5;
+				}
+			}
+		}
 	}
 }