Function progress

src/layout/points.ts:63–98

(params, data)

            return dimLen && {
                progress(params, data) {
                    const segCount = params.end - params.start;
                    const points = useTypedArray && createFloat32Array(segCount * dimLen);

                    const tmpIn: ParsedValueNumeric[] = [];
                    const tmpOut: number[] = [];

                    for (let i = params.start, offset = 0; i < params.end; i++) {
                        let point;

                        if (dimLen === 1) {
                            const x = store.get(dimIdx0, i) as ParsedValueNumeric;
                            // NOTE: Make sure the second parameter is null to use default strategy.
                            point = coordSys.dataToPoint(x, null, tmpOut);
                        }
                        else {
                            tmpIn[0] = store.get(dimIdx0, i) as ParsedValueNumeric;
                            tmpIn[1] = store.get(dimIdx1, i) as ParsedValueNumeric;
                            // Let coordinate system to handle the NaN data.
                            point = coordSys.dataToPoint(tmpIn, null, tmpOut);
                        }

                        if (useTypedArray) {
                            points[offset++] = point[0];
                            points[offset++] = point[1];
                        }
                        else {
                            data.setItemLayout(i, point.slice());
                        }
                    }

                    if (useTypedArray) {
                        data.setLayout('points', points);
                        data.setLayout('pointsRange', {start: params.start, end: params.end});
                    }
                }
            };
        }
    };