Commit: 7674ebf3407b4ac8dcf1ba88a9a240b619c13ae5
Author: Lukas Tönne
Date:   Sun Jun 1 15:54:58 2014 +0200
https://developer.blender.org/rB7674ebf3407b4ac8dcf1ba88a9a240b619c13ae5

Fix T40447: Creating Rigid Bodies is rejected for meshes without polys.

This check prevents using empty (no faces) meshes as rigid bodies.
While the idea makes sense, it also prevents using modifier-constructed
meshes, where faces are added only by the modifiers.

Further the check is very easy to circumvent, by removing faces after
making the rigid body, or by assigning a different mesh datablock
afterward.

Suggested by Fabian Emmes (@der_fab).

===================================================================

M       source/blender/editors/physics/rigidbody_object.c

===================================================================

diff --git a/source/blender/editors/physics/rigidbody_object.c 
b/source/blender/editors/physics/rigidbody_object.c
index 7ba37bb..b46d79f 100644
--- a/source/blender/editors/physics/rigidbody_object.c
+++ b/source/blender/editors/physics/rigidbody_object.c
@@ -100,10 +100,6 @@ bool ED_rigidbody_object_add(Scene *scene, Object *ob, int 
type, ReportList *rep
                BKE_report(reports, RPT_ERROR, "Can't add Rigid Body to non 
mesh object");
                return false;
        }
-       if (((Mesh *)ob->data)->totpoly == 0) {
-               BKE_report(reports, RPT_ERROR, "Can't create Rigid Body from 
mesh with no polygons");
-               return false;
-       }
 
        /* Add rigid body world and group if they don't exist for convenience */
        if (rbw == NULL) {

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