Loading overlay
Matt Perry
In this tutorial, we're going to build the Loading overlay example step-by-step.
This example is rated advanced difficulty, which means we assume you're already quite familiar with Motion (and JavaScript in general).
Here's a live demo of the example we're going to be creating:
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Introduction
The Line reveal example creates a dramatic loading animation where a thin vertical line extends from the center of the screen, then expands horizontally to reveal content beneath.
This example combines several Motion APIs: useSpring for smooth progress, useTransform to map progress to clip-path coordinates, useMotionTemplate to compose values into a CSS polygon, useMotionValueEvent to detect completion, and the animate function for the horizontal expansion.
