Teleportation

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來自 University of London 的課程

3D Interaction Design in Virtual Reality

40 個評分

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University of London

3D Interaction Design in Virtual Reality

40 個評分

課程 3（共 5 門，Specialization Virtual Reality）

This course will teach you about one of the most important aspects of VR, how you interact with a VR world. Virtual Reality is completely different from an on screen app or game. You are completely immersed in a VR world, so it doesn't make sense to interact only through buttons or menus. You will get the most out of VR if you can interact with the world just as you would with the real world: with your natural body movements. You will learn about the basic concepts and technologies of VR Interaction. You will then get hands on, learning about how to move around in VR and how to interact with the objects in your world. The course will finish with some advice from experts on VR interaction design and you will do a project where you will get real experience of developing VR Interaction.

從本節課中

Moving around in VR

Welcome to Week 2! This week, we'll cover moving around in VR. We'll look at physical navigation, such as walk-in-place, and virtual navigation, such as teleportation. You will end the week by beginning your project, and submitting your work in progress.

Introduction to Navigation in VR3:21

Real Walking4:35

Redirected Walking3:37

Walk-in-Place3:17

Virtual Navigation3:14

Teleporting5:22

Teleportation4:50

Travel in VR | Quality Factors3:56

與講師見面

Dr Sylvia Xueni Pan
Lecturer, Department of Computing
Goldsmiths, University of London
Dr Marco Gillies
Senior Lecturer
Computing Department, Goldsmiths, University of London

So, we've learnt about various ways of getting about in virtual reality.

And one of the ways that works well even if you've

got relatively low cost hardware like mobile VR or you've got to control is your gaze.

One thing that still works well is teleportation.

So it can be quite intuitive,

it's not very realistic,

but it works and it doesn't cause nausea so badly.

So, I'm going to show you how to set this up.

So I've got this scene that I've created a while ago,

so there's lots of stuff here and I've got the basic interaction scripts.

So, if I look at the TV it plays a sound.

Now, I'm going to do something similar for teleporting.

So what I'm going to do is create a teleport target.

So I'm going to create a 3D object and I'm going to do a cylinder,

and I'm going to make that a very flat

cylinder and maybe a little bit smaller.

I'm going to position it in front of the door so I can move over to the door.

So that's it.

That's when it's on the ground.

I'm going to move it over there to the door.

So this is going to be my teleport target.

This is where I'm going to teleport to,

when I actually teleport.

So, luckily for something to be interactive

it needs a collider and all of the primitives,

the built in objects like cylinder,

box sphere or have a collider already.

So that's fine. Now I'm going to add my scripts.

So as we saw previously,

anything that is interactive has to have VR interactive item.

And then my script via

action harness which will trigger actions and interacts with the selection radio.

I'm going to select.

There's only one selection radio that's touched the camera,

I'm going to select that.

I don't need to set the interactive item because that's

already on the subject and I'm not going to require a click.

So you don't have to click for this to happen.

And then I'm going to do the component that actually does the

teleporting via teleport target.

This has two variables I need to set.

First, is the camera or second is the camera.

But that's the easy one. I'll set the camera,

so it needs some information from the main camera.

This is mostly for it to fade in and out,

and I'll show you that when it's working.

But is also that needs to transform to teleport.

Now, we can't directly move the camera because say with an Oculus Rift,

Unity controls the camera directly from the head mounted display.

So you can't move the camera about because it will just get moved

back to where the head mounted display is.

That's why my main camera is underneath another transform called camera base.

So if the camera is inside another game object,

another transform, then we can move that transform.

So you can move camera base.

So I'm just going to drag camera base onto here.

So we're going to move camera base around and that is going to move our actual camera.

So if I run the projects again.

Here we are, we are in environments and I can look at my teleport target.

The screen fades out nicely and here I am in front of

the door from a different perspective in the room.

So that is a very easy way to move around.

It doesn't really cause nausea.

It works just with gaze-based VR and it's easy to implement with these scripts.

So lots of good stuff there.

But do remember, it's not so realistic we don't teleport in

real life and in particular it's a bit limiting.

So we can only teleport certain teleport targets.

I would add a few more than the ones that are here.

And also it can be a little bit disorienting.

So as you saw, you're settling in a new place and that

it can take you like a second or two to work out where you are after you've teleported.

So those are things to bear in mind when using teleporting

but particularly for mobile VR,

it's a really great way of navigating around virtual reality.

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