// This module implement some utility functions to work with
// the geojson-binary format defined at loaders.gl:
// https://github.com/visgl/loaders.gl/blob/master/modules/gis/docs/api-reference/geojson-to-binary.md
/**
 * Return the feature for an accesor
 */
export function binaryToFeatureForAccesor(data, index) {
    if (!data) {
        return null;
    }
    const featureIndex = 'startIndices' in data ? data.startIndices[index] : index;
    const geometryIndex = data.featureIds.value[featureIndex];
    if (featureIndex !== -1) {
        return getPropertiesForIndex(data, geometryIndex, featureIndex);
    }
    return null;
}
function getPropertiesForIndex(data, propertiesIndex, numericPropsIndex) {
    const feature = {
        properties: { ...data.properties[propertiesIndex] }
    };
    for (const prop in data.numericProps) {
        feature.properties[prop] = data.numericProps[prop].value[numericPropsIndex];
    }
    return feature;
}
// Custom picking color to keep binary indexes
export function calculatePickingColors(geojsonBinary, encodePickingColor) {
    const pickingColors = {
        points: null,
        lines: null,
        polygons: null
    };
    for (const key in pickingColors) {
        const featureIds = geojsonBinary[key].globalFeatureIds.value;
        pickingColors[key] = new Uint8ClampedArray(featureIds.length * 3);
        const pickingColor = [];
        for (let i = 0; i < featureIds.length; i++) {
            encodePickingColor(featureIds[i], pickingColor);
            pickingColors[key][i * 3 + 0] = pickingColor[0];
            pickingColors[key][i * 3 + 1] = pickingColor[1];
            pickingColors[key][i * 3 + 2] = pickingColor[2];
        }
    }
    return pickingColors;
}