Function createViewCoordSys

src/chart/graph/createView.ts:40–98

(ecModel: GlobalModel, api: ExtensionAPI)

}

export default function createViewCoordSys(ecModel: GlobalModel, api: ExtensionAPI) {
    const viewList: View[] = [];
    ecModel.eachSeriesByType('graph', function (seriesModel: GraphSeriesModel) {

        injectCoordSysByOption({
            targetModel: seriesModel,
            coordSysType: 'view',
            coordSysProvider: createViewCoordSys,
            isDefaultDataCoordSys: true,
        });

        function createViewCoordSys() {
            const data = seriesModel.getData();
            const positions = data.mapArray(function (idx) {
                const itemModel = data.getItemModel<GraphNodeItemOption>(idx);
                return [+itemModel.get('x'), +itemModel.get('y')];
            });

            let min: number[] = [];
            let max: number[] = [];

            bbox.fromPoints(positions, min, max);

            // If width or height is 0
            if (max[0] - min[0] === 0) {
                max[0] += 1;
                min[0] -= 1;
            }
            if (max[1] - min[1] === 0) {
                max[1] += 1;
                min[1] -= 1;
            }
            const aspect = (max[0] - min[0]) / (max[1] - min[1]);
            // FIXME If get view rect after data processed?
            const viewRect = getViewRect(seriesModel, api, aspect);
            // Position may be NaN (e.g., in force layout), use view rect instead
            if (isNaN(aspect)) {
                min = [viewRect.x, viewRect.y];
                max = [viewRect.x + viewRect.width, viewRect.y + viewRect.height];
            }

            const bbWidth = max[0] - min[0];
            const bbHeight = max[1] - min[1];

            const viewCoordSys = createViewCoordSysSimply(
                seriesModel,
                api,
                min[0], min[1], bbWidth, bbHeight,
                viewRect
            );

            viewList.push(viewCoordSys);

            return viewCoordSys;
        }
    });

    return viewList;