hello, i want to create a limitation for zoom in and zoom out and orbit in the viewer for users. what should I do and if I should write a code, then where should I write? would you please help me? thank you

Because the camera animation of acute3d viewer is too stiff, I hope to use Maya and 3DMAX camera data to control the animation. But I have studied the anim.txt file generated by acute3d viewer, and I can only guess a few parameters. Who can tell me how…