init onMouseMove update

src/delaunay.ts

@@ -70,13 +70,13 @@ export class DelaunayDiagram {
   }
 
   private concatSeriesDatapoints(series: ScatterData[]): number[][] {
-    // return type row: [ 0:x, 1:y, 2?:custom value, last:serieIdx ]
+    // return type row: [ 0:x, 1:y, 2?:custom value, last-1:serieIdx, last:pointIdx ]
     const datapointsList = _.map(series, serie => {
       const serieIdx = this.getSerieIdxByTarget(serie.target);
       const datapointsWithOptions = _.map(serie.datapoints, row => _.concat(row, serieIdx));
       return datapointsWithOptions;
     });
-    return _.union(...datapointsList);
+    return _.concat(...datapointsList);
   }
 
   private getSerieIdxByTarget(target: string): number {

src/index.ts

@@ -1,5 +1,5 @@
 import { ChartwerkPod, VueChartwerkPodMixin, TickOrientation, TimeFormat, yAxisOrientation, CrosshairOrientation } from '@chartwerk/core';
-import { ScatterData, ScatterOptions, PointType, LineType } from './types';
+import { ScatterData, ScatterOptions, PointType, LineType, Datapoint } from './types';
 
 import { DelaunayDiagram } from './delaunay';
 
@@ -150,12 +150,12 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
       .attr('height', (d: number[]) => this.series[_.last(d)].pointSize || DEFAULT_POINT_SIZE);
   }
 
-  getSeriesColorFromDataRow(values: number[], rowIdx: number): string {
-    const seriesIdx = _.last(values);
-    if(this.series[seriesIdx].colorFormatter) {
-      return this.series[seriesIdx].colorFormatter(values, rowIdx);
+  getSeriesColorFromDataRow(datapoint: Datapoint): string {
+    const serieIdx = datapoint.serieIdx;
+    if(this.series[serieIdx].colorFormatter) {
+      return this.series[serieIdx].colorFormatter(datapoint);
     }
-    return this.getSerieColor(seriesIdx);
+    return this.getSerieColor(serieIdx);
   }
 
   onPanningEnd(): void {
@@ -173,23 +173,18 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
     this.crosshair.selectAll('.crosshair-point').style('display', 'none');
   }
 
-  highlight(pointIdx: number): void {
+  highlight(datapoint: Datapoint): void {
     this.unhighlight();
 
-    const datapoint = this._delaunayDiagram.getDataRowByIndex(pointIdx);
-    if(datapoint === undefined || datapoint === null) {
-      return;
-    }
-
-    const serieIdx = _.last(datapoint);
+    const serieIdx = datapoint.serieIdx;
     const serieOrientation = this.series[serieIdx].yOrientation;
     const size = this.getCrosshairCircleBackgroundSize(serieIdx);
     this.crosshair.selectAll(`.crosshair-point-${serieIdx}`)
-      .attr('cx', this.xScale(datapoint[0]))
-      .attr('cy', this.getYScale(serieOrientation)(datapoint[1]))
-      .attr('x', this.xScale(datapoint[0]) - size / 2)
-      .attr('y', this.getYScale(serieOrientation)(datapoint[1]) - size / 2)
-      .attr('fill', this.getSeriesColorFromDataRow(datapoint, pointIdx))
+      .attr('cx', this.xScale(datapoint.x))
+      .attr('cy', this.getYScale(serieOrientation)(datapoint.y))
+      .attr('x', this.xScale(datapoint.x - size / 2))
+      .attr('y', this.getYScale(serieOrientation)(datapoint.y) - size / 2)
+      .attr('fill', this.getSeriesColorFromDataRow(datapoint))
       .style('display', null);
   }
 
@@ -208,7 +203,7 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
     const eventX = this.xScale(values.x);
     const eventY = this.yScale(values.y);
     this.moveCrosshairLine(eventX, eventY);
-    const datapoints = this.findAndHighlightDatapoints(values.x, values.y);
+    const datapoints = this.findDatapoint(values.x, values.y);
 
     if(this.options.eventsCallbacks === undefined || this.options.eventsCallbacks.sharedCrosshairMove === undefined) {
       console.log('Shared crosshair move, but there is no callback');
@@ -246,21 +241,36 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
     }
   }
 
-  findAndHighlightDatapoints(eventX: number, eventY: number): { values: any[], pointIdx: number } | null {
+  highlightDatapoint(datapoint?: Datapoint): void {
+    if(_.isNil(datapoint)) {
+      return;
+    }
+    this.highlight(datapoint); 
+  }
+
+  findDatapoint(eventX: number, eventY: number): Datapoint | null {
     if(this.series === undefined || this.series.length === 0) {
       return null;
     }
-  
+    
     const pointIndex = this._delaunayDiagram.findPointIndex(eventX, eventY);
-    if(pointIndex === undefined) {
-      this.unhighlight();
+    const datapoint = this._delaunayDiagram.getDataRowByIndex(pointIndex);
+    if(_.isNil(datapoint)) {
+      // TODO: maybe throw an error?
       return null;
     }
-    this.highlight(pointIndex);
+    const serieIdx = _.last(datapoint);
+    let seriePointIdx = pointIndex
+    for(let i = 0; i < serieIdx; i++) {
+      seriePointIdx -= this.series[serieIdx].datapoints.length;
+    }
 
     return {
-      values: this._delaunayDiagram.data[pointIndex],
-      pointIdx: pointIndex,
+      x: datapoint[0],
+      y: datapoint[1],
+      rawValues: datapoint,
+      serieIdx,
+      pointIdx: seriePointIdx,
     };
   }
 
@@ -282,7 +292,8 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
     this.crosshair.style('display', 'none');
   }
 
-  onMouseMove(): void {
+  // @ts-ignore
+  onMouseMove(d: any): void {
     const mousePosition = d3.mouse(this.chartContainer.node());
     const eventX = mousePosition[0];
     const eventY = mousePosition[1];
@@ -298,7 +309,8 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
     this.moveCrosshairLine(eventX, eventY);
 
     // TOOD: it should be two different methods
-    const highlighted = this.findAndHighlightDatapoints(eventX, eventY);
+    const datapoint = this.findDatapoint(eventX, eventY);
+    this.highlightDatapoint(datapoint);
     if(this.options.eventsCallbacks === undefined || this.options.eventsCallbacks.mouseMove === undefined) {
       console.log('Mouse move, but there is no callback');
       return;
@@ -309,7 +321,7 @@ export class ChartwerkScatterPod extends ChartwerkPod<ScatterData, ScatterOption
       y: d3.event.clientY,
       xval: this.xScale.invert(eventX),
       yval: this.xScale.invert(eventY),
-      highlighted,
+      highlighted: datapoint,
       chartX: eventX,
       chartWidth: this.width
     });

src/types.ts

@@ -27,4 +27,4 @@ export enum LineType {
   DASHED = 'dashed'
 }
 
-export type ColorFormatter = (datapoint: number[], pointIdx) => string;
+export type ColorFormatter = (datapoint: Datapoint) => string;