Method _processFlatCoordsArray

src/chart/lines/LinesSeries.ts:256–304

(data: LinesSeriesOption['data'])

    }

    _processFlatCoordsArray(data: LinesSeriesOption['data']) {
        let startOffset = 0;
        if (this._flatCoords) {
            startOffset = this._flatCoords.length;
        }
        // Stored as a typed array. In format
        // Points Count(2) | x | y | x | y | Points Count(3) | x |  y | x | y | x | y |
        if (isNumber(data[0])) {
            const len = data.length;
            // Store offset and len of each segment
            const coordsOffsetAndLenStorage = new Uint32Arr(len) as Uint32Array;
            const coordsStorage = new Float64Arr(len) as Float64Array;
            let coordsCursor = 0;
            let offsetCursor = 0;
            let dataCount = 0;
            for (let i = 0; i < len;) {
                dataCount++;
                const count = data[i++] as number;
                // Offset
                coordsOffsetAndLenStorage[offsetCursor++] = coordsCursor + startOffset;
                // Len
                coordsOffsetAndLenStorage[offsetCursor++] = count;
                for (let k = 0; k < count; k++) {
                    const x = data[i++] as number;
                    const y = data[i++] as number;
                    coordsStorage[coordsCursor++] = x;
                    coordsStorage[coordsCursor++] = y;

                    if (i > len) {
                        if (__DEV__) {
                            throw new Error('Invalid data format.');
                        }
                    }
                }
            }

            return {
                flatCoordsOffset: new Uint32Array(coordsOffsetAndLenStorage.buffer, 0, offsetCursor),
                flatCoords: coordsStorage,
                count: dataCount
            };
        }

        return {
            flatCoordsOffset: null,
            flatCoords: null,
            count: data.length
        };
    }

    getInitialData(option: LinesSeriesOption, ecModel: GlobalModel) {
        if (__DEV__) {