[JAVA3D] Render problem

[Chaohui Zhu]

Hello, all,    I met with a problem which confusing me for the whole day. If somebody met before, please help me to solve this problem.    In my program, there exists one BranchGroup, several Shapes are added to this BranchGroup, and the BranchGroup are attached to the Canvas3D. So these Shapes can be displayed normally. The problem is: If I change part of these shapes, the canvas3D still display the same result, it seems that it don't change the result.  How can I get the correct result?      Can anyone help me?       Best regards,       Chaohui