Rendering different objects and fov's

[andrewjworz]

I am creating a virtual forest, and I am wondering if there is any way I can do these two things:

1) First, I would like to switch the field of view after an event occurs. For example, I would like to load the scene,take some screen shots, and after I'm finished with the original fov, I would like to switch to a different field of view with a something like a "yield viztask.waitKeyDown()" event. How can I do this? Can this be done without using multiple scenes?

2) I would also like to initially load the virtual forest with planar-billboards, move the viewpoint through the world, and then substitute the planar billboard object with a 3d object based on some rule relating to my position in the world. For example, if a tree billboard is within 5 meters of the viewpoint, then render the tree as its corresponding 3d object rather than as a billboard. If the billboard is greater than 5 meters, rendering the tree as a billboard is okay. Is is possible to do this? If so, can you please outline the steps I will have to take. Can this be done without using multiple scenes?

-Andy

[Jeff]

1) Yes, this is possible:
import viz
import viztask

viz.go()
gallery = viz.add('gallery.ive')

def changeFOV():
yield viztask.waitKeyDown(' ')
viz.fov(60)

viztask.schedule( changeFOV() )

2) You can check the distance between the viewpoint and each billboard using the vizmat.Distance command. The check can be done within a timer function on some regular interval. Based on the distance you can swap a new model in.

If you have access to Vizard 4 this can be accomplished using proximity sensors.

[sleiN13]

Those proximity sensors sound like a interesting feature, I can;t find any documentation about it in the vizard 4 help files. Do you have some examples of it's use?

[farshizzo]

Those proximity sensors sound like a interesting feature, I can;t find any documentation about it in the vizard 4 help files. Do you have some examples of it's use?

It's in the latest version. Go to Help -> Check for Updates to download the new version.