Deformables: enable double sided rendering, reduced the number of debug lines in regular rendering.

src/BulletSoftBody/btDeformableMultiBodyDynamicsWorld.cpp

@@ -378,6 +378,22 @@ void btDeformableMultiBodyDynamicsWorld::reinitialize(btScalar timeStep)
     btMultiBodyDynamicsWorld::getSolverInfo().m_timeStep = timeStep;
 }
 
+
+void btDeformableMultiBodyDynamicsWorld::debugDrawWorld()
+{
+
+	for (int i = 0; i < getSoftBodyArray().size(); i++)
+	{
+		btSoftBody* psb = (btSoftBody*)getSoftBodyArray()[i];
+		{
+			btSoftBodyHelpers::DrawFrame(psb, getDebugDrawer());
+			btSoftBodyHelpers::Draw(psb, getDebugDrawer(), getDrawFlags());
+		}
+	}
+
+	btMultiBodyDynamicsWorld::debugDrawWorld();
+}
+
 void btDeformableMultiBodyDynamicsWorld::applyRigidBodyGravity(btScalar timeStep)
 {
     // Gravity is applied in stepSimulation and then cleared here and then applied here and then cleared here again

src/BulletSoftBody/btDeformableMultiBodyDynamicsWorld.h

@@ -93,7 +93,9 @@ public:
     }
 
     virtual int stepSimulation(btScalar timeStep, int maxSubSteps = 1, btScalar fixedTimeStep = btScalar(1.) / btScalar(60.));
-    
+
+	virtual void debugDrawWorld();
+
     void setSolverCallback(btSolverCallback cb)
     {
         m_solverCallback = cb;
@@ -178,6 +180,7 @@ public:
     {
         m_lineSearch = lineSearch;
     }
+
 };
 
 #endif  //BT_DEFORMABLE_MULTIBODY_DYNAMICS_WORLD_H