If you need to get the Y position of a vertically scrolling container, create a text box. Then on the container scroll trigger, set a variable that evaluates the numerical callback value from the event (Y position). Then add a callback that changes the text property of the text box by reading from the variable.

This is prototype was created for the Net magazine article "Design Prototypes That Reel Real - with Proto.io. It includes a step-by-step written tutorial with screenshots here: http://www.creativebloq.com/web-design/design-prototypes-feel-real-protoio-21619311 It's a product concept for juxtaposing two photos and typing a caption about the connection between them. It should look like this. The tutorial starts with bringing in a range of external assets. Then it'll show how to design assets and customize native components within the tool. Interactions will be triggered by gestures, keyboard input, and automatically as the prototype loads, then choreographed along an animation timeline. Enjoy... TAGS text input capture staggered animation variable variables show captured text input on different screen

This prototype is basically just a Snapchat login very well designed, with most of the replicable elements of their app.

This prototype shows a common onboarding pattern with a series of 3 panels, each with a different background media (photo, looping video, and a GIF). TAGS: onboarding sync page controller looping video GIF

Done to explore setting colors with sliders and some Math expressions. Additional features, should anyone wish to build, would be to convert to HSV space, and to produce Hex color codes as well. To use colors, in the color controls of an element, replace the #XXXXXX hex code with this: rgb(255,125,45). Two swatches are provided, since color combinations are more interesting than single colors. Swatches are draggable.