Basics and Cosmos

[travis]

The core focus of C4 is to make building beautiful interactive experiences and interfaces. C4 is centered around Apple’s Core Animation (CA) framework, and makes programming interactivity, animations and media way faster and way easier than working directly with CA.

Another core focus of our project is to provide you with lots of great content for learning and building great experiences.

To get started with C4, you'll have to install some software:

Install C4

If you're new to C4 you should start with the following:

Basics Tutorial

If you want to dive right into a great tutorial, you should check out Cosmos:

Cosmos Tutorial

The Cosmos tutorial is an end-to-end walkthrough on design, prototyping and shipping a real app.

If you have any questions about getting started, or either of the tutorials linked above please reply here.

[travis]

Here's an example of how to create a circle and add it to the canvas:

let circle = C4Circle(center: canvas.center, radius: 50)
canvas.add(circle)

From Circles

And, here's how you can create an animation to change the color of that circle:

C4ViewAnimation(duration: 1.0) { () -> Void in
    let randomColor = C4Color(red: random01(), green: random01(), blue: random01(), alpha: 1.0)
    circle.fillColor = randomColor
}.animate()

Learn more about Animations

[Ollstar]

Really liking the parallax background in the Cosmos tutorial.

[hanajo]

Hi there,

I found out about C4 via Creative Applications. I'm very excited to start, but I came upon an issue right out of the gate. I keep getting the following error when I try to run the code.

http://cl.ly/2P3p2E042a0X

"Use of unresolved identifier: Circle"

This has happened with all the snippets I've pasted in—it seems like it points out any shape words that are capitalized.

Would love some help on how to resolve this. I tried to Google it but didn't find anything helpful. Do you know what's going on here? Am I supposed to install something else or did I set up my file incorrectly?

Thanks!

[travis]

Hey Hanajo,

You absolutely caught a mistake on our end. The installer was for the 1.0.3 version.

Please re-download and install C4 again, I've just updated the proper link.

http://www.c4ios.com/C4Installer_1_1_0.pkg

T