Joe Blau

Design Engineer

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iOS Touch Visualizer

 Visualize Touches, Pans and Long Presses

I was working on a project with my co-founder this weekend and my task was to record a simple video that helps onboard users. One of the concepts we are using in our app is something we call Full Screen Gesture Controls. These are similar to what was demonstrated by Matthaeus Krenn in his New Car UI Video. In his video, he was able to physically show you his fingers moving across the screen, but what if you’re doing a live demo and people can’t see your hands?

That’s where Touch Visualizer comes in as an way to visualize three types of interactions with the screen.

  1. Touches: Visualized by a circle which expands and fades out
  2. Pans: Visualized by a circle with contracts and fades out into a tiny dot
  3. Long Presses: Visualized by a morphing circle

You can also customize the colors of the fill, stroke, opacity and fade out duration. Here is a

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Flappy Block

 Flappy Bird Clone using the iOS7 Physics Engine

#FlappyBird — Need anything else be said? The game is so simple, yet it mixes the right amount of frustration and entertainment that was in the early 90’s nintendo games like Double Dragon 3, and Teenage Mutant Ninja Turtles. With Dong Nguyen announcing that he was taking the game down, I wanted to figure out how hard it would be to replicate the game’s physics and interactions with the new iOS7 physics engine. I’m writing this because it’s apparent that a lot of developers don’t even know that iOS 7 has a built in physics engine – UIKit Dynamics.

 Physical Interaction 1: Flap

Flapping requires three steps. The first step is to create a gesture which recognizes a tap.

UITapGestureRecognizer *singleTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTapGesture:)];

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