lerp static method
Implementation
static M3ESpacing lerp(M3ESpacing a, M3ESpacing b, double t) => M3ESpacing(
xs: a.xs + (b.xs - a.xs) * t,
sm: a.sm + (b.sm - a.sm) * t,
md: a.md + (b.md - a.md) * t,
lg: a.lg + (b.lg - a.lg) * t,
xl: a.xl + (b.xl - a.xl) * t,
xxl: a.xxl + (b.xxl - a.xxl) * t,
);