hunched-ego/dist/PostureOverlay.js

A React Native library for posture-based screen dimming

"use strict";
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
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})();
Object.defineProperty(exports, "__esModule", { value: true });
const react_1 = __importStar(require("react"));
const react_native_1 = require("react-native");
const react_native_sensors_1 = require("react-native-sensors");
const operators_1 = require("rxjs/operators");
const postureUtils_1 = require("./postureUtils");
const PostureOverlay = ({ goodAngleThreshold = 30, badAngleThreshold = 60, maxOpacity = 1, overlayColor = '#000', }) => {
    const [opacity] = (0, react_1.useState)(new react_native_1.Animated.Value(0));
    (0, react_1.useEffect)(() => {
        let latestAngle = 0;
        let currentTargetOpacity = 0; // Track the last target to avoid redundant animations
        const subscription = react_native_sensors_1.accelerometer
            .pipe((0, operators_1.map)(({ x, y, z }) => (0, postureUtils_1.getZAxisAngle)(x, y, z)))
            .subscribe((angle) => {
            latestAngle = angle;
        });
        const interval = setInterval(() => {
            let targetOpacity = 0;
            if (latestAngle >= goodAngleThreshold) {
                targetOpacity = 0;
            }
            else if (latestAngle <= badAngleThreshold) {
                targetOpacity = maxOpacity;
            }
            else {
                const ratio = (goodAngleThreshold - latestAngle) / (goodAngleThreshold - badAngleThreshold);
                targetOpacity = ratio * maxOpacity;
            }
            // Only animate if the target opacity changes
            if (targetOpacity !== currentTargetOpacity) {
                currentTargetOpacity = targetOpacity;
                react_native_1.Animated.spring(opacity, {
                    toValue: targetOpacity,
                    tension: 8, // Controls stiffness
                    friction: 4, // Controls bounciness / damping
                    useNativeDriver: true,
                }).start();
            }
            console.log(`Angle: ${latestAngle}, Target Opacity: ${targetOpacity}`);
        }, 250); // Reduced interval for smoother updates
        return () => {
            subscription.unsubscribe();
            clearInterval(interval);
        };
    }, [goodAngleThreshold, badAngleThreshold, maxOpacity]);
    return (react_1.default.createElement(react_native_1.Animated.View, { style: [
            react_native_1.StyleSheet.absoluteFill,
            { backgroundColor: overlayColor, opacity, zIndex: 9999 },
        ], pointerEvents: "none" }));
};
exports.default = PostureOverlay;
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