tweak pybullet examples a bit (mac OSX OpenGL runs in mainloop, with python interpreter,

so it needs some 'ping' command
bump up pybullet to version 1.4.6

examples/pybullet/examples/mimicJointConstraint.py

@@ -23,6 +23,7 @@ p.changeConstraint(c,gearRatio=-1, maxForce=10000)
 
 p.setRealTimeSimulation(1)
 while(1):
+	p.setGravity(0,0,-10)
 	time.sleep(0.01)
 #p.removeConstraint(c)
-	
+	

examples/pybullet/examples/quadruped.py

@@ -187,6 +187,7 @@ t = 0.0
 t_end = t + 15
 ref_time = time.time()
 while (t<t_end):
+	p.setGravity(0,0,-10)
 	if (useRealTime):
 		t = time.time()-ref_time
 	else:

examples/pybullet/examples/vr_kuka_setup.py

@@ -1,6 +1,8 @@
 import pybullet as p
+import time
 #p.connect(p.UDP,"192.168.86.100")
 
+
 cid = p.connect(p.SHARED_MEMORY)
 if (cid<0):
 	p.connect(p.GUI)
@@ -80,6 +82,12 @@ p.configureDebugVisualizer(p.COV_ENABLE_RENDERING, 1)
 p.setGravity(0.000000,0.000000,0.000000)
 p.setGravity(0,0,-10)
 
-p.stepSimulation()
+##show this for 10 seconds
+#now = time.time()
+#while (time.time() < now+10):
+#	p.stepSimulation()
+p.setRealTimeSimulation(1)
 
+while (1):
+	p.setGravity(0,0,-10)
 p.disconnect()