I use debugNP.show(), but I showed nothing.

Scripting Issues
1 
#!/usr/bin/python
#coding:utf8

import sys, os.path

from direct.showbase.ShowBase import ShowBase
from pandac.PandaModules import *
from panda3d.bullet import *

class MyApp(ShowBase):

	def __init__(self):
		ShowBase.__init__(self)

		# 禁用摄像机控制任务。
		self.disableMouse()
		self.camera.setPos(0,-7,1.1)

		debugNode = BulletDebugNode('Debug')
		debugNP = render.attachNewNode(debugNode)
		debugNP.show()

		# 建立 Bullet 的 World
		world = BulletWorld()
		world.setDebugNode(debugNP.node())
		
		# 建立 Bullet 需要的碰撞对象
		shape = BulletSphereShape(3)
		node = BulletRigidBodyNode('Joint')
		node.addShape(shape)
		np = render.attachNewNode(node)
		np.setPos(0,0,0)
		world.attachRigidBody(node)

rootDir = os.path.abspath(os.path.dirname(sys.argv[0]))
loadPrcFile(os.path.join(rootDir, "Config.prc"))	

app = MyApp()
app.run()

But I showed nothing.

2

The debug node creates updates it’s geoemetry each simulation frame, that is each time you call world.doPhysics. No calls to doPhysics --> no debug geometry.

3

Thank You ！