framer-motion
Version:
A simple and powerful JavaScript animation library
46 lines (44 loc) • 1.14 kB
JavaScript
const namedEdges = {
start: 0,
center: 0.5,
end: 1,
};
function resolveEdge(edge, length, inset = 0) {
let delta = 0;
/**
* If we have this edge defined as a preset, replace the definition
* with the numerical value.
*/
if (edge in namedEdges) {
edge = namedEdges[edge];
}
/**
* Handle unit values
*/
if (typeof edge === "string") {
const asNumber = parseFloat(edge);
if (edge.endsWith("px")) {
delta = asNumber;
}
else if (edge.endsWith("%")) {
edge = asNumber / 100;
}
else if (edge.endsWith("vw")) {
delta = (asNumber / 100) * document.documentElement.clientWidth;
}
else if (edge.endsWith("vh")) {
delta = (asNumber / 100) * document.documentElement.clientHeight;
}
else {
edge = asNumber;
}
}
/**
* If the edge is defined as a number, handle as a progress value.
*/
if (typeof edge === "number") {
delta = length * edge;
}
return inset + delta;
}
export { namedEdges, resolveEdge };