progress: function()

in src/layout/barGrid.ts [499:589]
78 lines of code
22 McCabe index (conditional complexity)

                progress: function (params, data) {
                    const count = params.count;
                    const largePoints = isLarge && createFloat32Array(count * 3);
                    const largeBackgroundPoints = isLarge && drawBackground && createFloat32Array(count * 3);
                    const largeDataIndices = isLarge && createFloat32Array(count);
                    const coordLayout = cartesian.master.getRect();
                    const bgSize = isValueAxisH ? coordLayout.width : coordLayout.height;

                    let dataIndex;
                    const store = data.getStore();

                    let idxOffset = 0;

                    while ((dataIndex = params.next()) != null) {
                        const value = store.get(stacked ? stackedDimIdx : valueDimIdx, dataIndex);
                        const baseValue = store.get(baseDimIdx, dataIndex) as number;
                        let baseCoord = valueAxisStart;
                        let stackStartValue;

                        // Because of the barMinHeight, we can not use the value in
                        // stackResultDimension directly.
                        if (stacked) {
                            stackStartValue = +value - (store.get(valueDimIdx, dataIndex) as number);
                        }

                        let x;
                        let y;
                        let width;
                        let height;

                        if (isValueAxisH) {
                            const coord = cartesian.dataToPoint([value, baseValue]);
                            if (stacked) {
                                const startCoord = cartesian.dataToPoint([stackStartValue, baseValue]);
                                baseCoord = startCoord[0];
                            }
                            x = baseCoord;
                            y = coord[1] + columnOffset;
                            width = coord[0] - baseCoord;
                            height = columnWidth;

                            if (Math.abs(width) < barMinHeight) {
                                width = (width < 0 ? -1 : 1) * barMinHeight;
                            }
                        }
                        else {
                            const coord = cartesian.dataToPoint([baseValue, value]);
                            if (stacked) {
                                const startCoord = cartesian.dataToPoint([baseValue, stackStartValue]);
                                baseCoord = startCoord[1];
                            }
                            x = coord[0] + columnOffset;
                            y = baseCoord;
                            width = columnWidth;
                            height = coord[1] - baseCoord;

                            if (Math.abs(height) < barMinHeight) {
                                // Include zero to has a positive bar
                                height = (height <= 0 ? -1 : 1) * barMinHeight;
                            }
                        }

                        if (!isLarge) {
                            data.setItemLayout(dataIndex, { x, y, width, height });
                        }
                        else {
                            largePoints[idxOffset] = x;
                            largePoints[idxOffset + 1] = y;
                            largePoints[idxOffset + 2] = isValueAxisH ? width : height;

                            if (largeBackgroundPoints) {
                                largeBackgroundPoints[idxOffset] = isValueAxisH ? coordLayout.x : x;
                                largeBackgroundPoints[idxOffset + 1] = isValueAxisH ? y : coordLayout.y;
                                largeBackgroundPoints[idxOffset + 2] = bgSize;
                            }

                            largeDataIndices[dataIndex] = dataIndex;
                        }

                        idxOffset += 3;
                    }

                    if (isLarge) {
                        data.setLayout({
                            largePoints,
                            largeDataIndices,
                            largeBackgroundPoints,
                            valueAxisHorizontal: isValueAxisH
                        });
                    }
                }