@ginden/blinkstick-v2/dist/animations/common/pulse.js

Improved Blickstick API for Node.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.pulse = pulse;
const simple_frame_1 = require("../frame/simple-frame");
const clamp_1 = require("../../utils/clamp");
const tsafe_1 = require("tsafe");
const assert_fps_below_100_1 = require("../helpers/assert-fps-below-100");
/**
 * @summary Pulses a color and backs off to black.
 * @category Animation
 */
function pulse([r, g, b], { overMs, ...opts }) {
    (0, tsafe_1.assert)(overMs > 0, 'overMs must be greater than 0');
    const { steps = overMs / 34 } = opts;
    (0, assert_fps_below_100_1.assertFpsBelow100)(overMs, steps);
    return {
        *[Symbol.iterator]() {
            const stepDuration = (overMs / (steps * 2)) | 0;
            for (let i = 0; i < steps; i++) {
                const brightness = i * (255 / steps);
                yield simple_frame_1.SimpleFrame.fromProperties({
                    rgb: [(0, clamp_1.clampRgb)(r * brightness), (0, clamp_1.clampRgb)(g * brightness), (0, clamp_1.clampRgb)(b * brightness)],
                    duration: stepDuration | 0,
                });
            }
            for (let i = steps - 1; i >= 0; i--) {
                const brightness = i * (255 / steps);
                yield simple_frame_1.SimpleFrame.fromProperties({
                    rgb: [(0, clamp_1.clampRgb)(r * brightness), (0, clamp_1.clampRgb)(g * brightness), (0, clamp_1.clampRgb)(b * brightness)],
                    duration: stepDuration | 0,
                });
            }
        },
    };
}
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