Tips and Frequently Asked Questions
Q: How do I bring up the main menu and documentation?
A: Simply double-tap the screen with one finger.
- On the iPad this brings up the Help screen, which also includes all the control buttons.
- On the iPhone or iPod touch, a double-tap brings up the shortcuts menu, which includes an Instructions button. The Instructions appear on four small pages that explain and include each button, along with tips on moving through Augmented Reality.
Invisibility 3D is a universal iOS app for any iPad, iPhone or iPod touch. Through the rest of these FAQ we’ll use ‘iPad’ to refer to whichever device you’re running it on.
TAKE A TABLE PHOTO
Q: What’s the best way to take a photo to use as a table texture?
A: If possible, hold the iPad 2 feet above the table, and shoot the camera straight down. The app creates a square texture from the photo, using only the top or left square of the photo you took; you’ll see the square frame around the image as you take the picture. Make sure stray objects and body parts aren’t in the square before you snap it. The app makes a seamless repeating pattern from the image; the higher above the table you hold the camera, the wider the area will be before you see a feature repeat.
ADJUST THE TEXTURE
Q: I’m at a table with a pattern like wood grain where orientation matters. How do I line up the augmented reality texture with the real wood grain I see in the live video?
A: Simply pinch the image after you take the picture – twist and move it until it’s the right orientation, size and position to match. Thanks to Pantomime’s gyro stability, once the texture is lined up it will stay that way as you turn the iPad – until, with another 2-finger twist, you rotate it or the whole Augmented reality world again.
Q: What’s “Adjust Table Texture”?
A: If you’re already in Augmented Reality, the Adjust Table Texture button appears in the menu where Show Augmented Reality used to be. It turns off Augmented Reality so when you pinch, turn and slide you’re adjusting the texture image (see previous Q) rather than moving the iPad in the 3D world.
Q: I’ve pressed Show Augmented Reality, but now I can’t find the virtual ball or anything else except the virtual floor.
A: (First make sure you’re still in Augmented Reality – when you double-tap to bring up the menu, if instead of an “Adjust Table Texture” button you see a “Show Augmented Reality” button, press it.)
When you first tap Show Augmented Reality, your iPad is in the middle of a red game court, near a red hoop structure, a hole in the floor, and a blue translucent ramp.
If you don’t see those, you’ll want to look around: hold the iPad up 90 degrees so you can see horizontally through it, turning left, right, or all the way around. You can physically turn the iPad to look behind you, or twist with two fingers (or thumbs) – the standard iOS gesture for rotation. Once you see the ball and the other structures in the distance at the horizon, pull the virtual world toward you by stroking downward on the screen.
TIP: If you see you’re in the middle of the game court and you can hear collisions but can’t see the ball, turn around – the ball is probably rolling down the ramp right behind you and bouncing against your iPad’s virtual backside.
Q: After I’ve done “Rub Away Your Screen” or “Rub Through Your iPad”, how do I make the home screen, circuit insides and blue acid to completely disappear, so Augmented Reality gestures are recognized instead?
A: Simply press and hold anywhere on the screen for up to 2 seconds. The acid melts through each remaining layer to make it translucent and then fully transparent. You’ll see and hear each layer dissolve (up to four splashes of acid) before they’re all gone. The next time you stroke the screen you’ll be gliding in Augmented Reality again.
Power User Tip: When you “Rub Through Your iPad”, you can make the interior circuit board translucent or transparent, or rub away just that layer independent of the front ‘home screen’ layer, by rubbing or pressing with two fingers instead of one.
MOVING THROUGH AUGMENTED REALITY
Q: How do I move around in the virtual world?
A: Invisibility 3D with Pantomime™ introduces a style of 3D navigation that’s new to computers and mobile devices. But actually it’s very similar to the way we move our bodies through real 3D space when we Walk on the ground. Unless you’re gripping the iPad by the screen to Paddle (see below), Pantomime assumes it’s supported on a flat surface; the virtual world and the real world meet where the iPad is in contact with the table. Pantomime knows whether the iPad is resting on one corner, on one edge, or on its back – in fact, you’ll hear a footfall sound whenever you shift its support and take a virtual step.
So to keep the virtual reality world and the real world together, keep each contact point or edge fixed on the table as you move. As you turn the iPad around that point or edge, any way you lean it, tip it, turn it, or rock it, you’ll see 3D Augmented Reality magic.
To walk the iPad through the virtual world, think of its corners as feet: leave one corner fixed on the table, as you lift another corner and move it toward your goal; then set that corner down and lift the other, and continue toward your destination.
The other, simple way to move around is Gliding – moving the entire 3D virtual world by stroking the screen with a finger, like scrolling with momentum. Stroke left or right to move the world horizontally; stroke down and up to pull it nearer and push it farther.
Q: How do I use the iPad as a paddle?
A: First, move to the spot you’d like to be paddling from; the center of the game court is a good spot for hitting the ball. Then grip the iPad with one hand, putting your thumb firmly on the screen. You should see a violet indicator where your thumb is, confirming that you’re paddling rather than gliding or walking.
Invisibility 3D estimates where your wrist is with respect to the paddle, and keeps your wrist at one spot in the virtual world until you release the paddle grip. Now instead of swinging the iPad around it’s edges or corners, you’re swinging it around your wrist. So for best effect, swing from your wrist – keeping your wrist itself roughly in one place. You’ll see the iPad swing through the virtual space, and you’ll have extra leverage since now you’re swinging around a point outside the iPad – just like a real paddle.