@tamagui/react-native-web-lite
Version:
React Native for Web
54 lines (53 loc) • 1.79 kB
JavaScript
function stiffnessFromOrigamiValue(oValue) {
return (oValue - 30) * 3.62 + 194;
}
function dampingFromOrigamiValue(oValue) {
return (oValue - 8) * 3 + 25;
}
function fromOrigamiTensionAndFriction(tension, friction) {
return {
stiffness: stiffnessFromOrigamiValue(tension),
damping: dampingFromOrigamiValue(friction)
};
}
function fromBouncinessAndSpeed(bounciness, speed) {
function normalize(value, startValue, endValue) {
return (value - startValue) / (endValue - startValue);
}
function projectNormal(n, start, end) {
return start + n * (end - start);
}
function linearInterpolation(t, start, end) {
return t * end + (1 - t) * start;
}
function quadraticOutInterpolation(t, start, end) {
return linearInterpolation(2 * t - t * t, start, end);
}
function b3Friction1(x) {
return 7e-4 * x ** 3 - 0.031 * x ** 2 + 0.64 * x + 1.28;
}
function b3Friction2(x) {
return 44e-6 * x ** 3 - 6e-3 * x ** 2 + 0.36 * x + 2;
}
function b3Friction3(x) {
return 45e-8 * x ** 3 - 332e-6 * x ** 2 + 0.1078 * x + 5.84;
}
function b3Nobounce(tension) {
return tension <= 18 ? b3Friction1(tension) : tension > 18 && tension <= 44 ? b3Friction2(tension) : b3Friction3(tension);
}
let b = normalize(bounciness / 1.7, 0, 20);
b = projectNormal(b, 0, 0.8);
const s = normalize(speed / 1.7, 0, 20), bouncyTension = projectNormal(s, 0.5, 200), bouncyFriction = quadraticOutInterpolation(b, b3Nobounce(bouncyTension), 0.01);
return {
stiffness: stiffnessFromOrigamiValue(bouncyTension),
damping: dampingFromOrigamiValue(bouncyFriction)
};
}
var SpringConfig_default = {
fromOrigamiTensionAndFriction,
fromBouncinessAndSpeed
};
export {
SpringConfig_default as default
};
//# sourceMappingURL=SpringConfig.js.map