@snap/camera-kit/dist/session/screenRegions.js

Camera Kit Web

import { isRecord } from "../common/typeguards";
const REGION_TYPE_MAPPING = {
    roundButton: "round_button",
    topBar: "top_bar",
    keyboard: "keyboard",
    safeRender: "safe_render",
    captureExitButton: "capture_exit_button",
};
export function isScreenRegions(value) {
    if (!isRecord(value))
        return false;
    for (const [key, rect] of Object.entries(value)) {
        if (!(key in REGION_TYPE_MAPPING))
            return false;
        if (!isNormalizedRectLike(rect))
            return false;
    }
    return true;
}
const EPS = 1e-6;
const isFiniteNumber = (v) => typeof v === "number" && Number.isFinite(v);
function isNormalizedRectLike(obj) {
    if (!isRecord(obj))
        return false;
    const x = obj.x;
    const y = obj.y;
    const width = obj.width;
    const height = obj.height;
    if (![x, y, width, height].every(isFiniteNumber))
        return false;
    if (width < 0 || height < 0)
        return false;
    const x2 = x + width;
    const y2 = y + height;
    if (x < -EPS || y < -EPS)
        return false;
    if (x > 1 + EPS || y > 1 + EPS)
        return false;
    if (x2 > 1 + EPS || y2 > 1 + EPS)
        return false;
    return true;
}
export function prepareScreenRegionsUpdate(newRegions) {
    const mappedRegions = {};
    for (const [regionType, region] of Object.entries(newRegions)) {
        const lensCoreRegionType = REGION_TYPE_MAPPING[regionType];
        mappedRegions[lensCoreRegionType] = {
            normalizedRect: {
                origin: {
                    x: region.x,
                    y: region.y,
                },
                size: {
                    width: region.width,
                    height: region.height,
                },
            },
        };
    }
    return mappedRegions;
}
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