Method _updateEffectSymbol

src/chart/helper/EffectLine.ts:66–110

(lineData: SeriesData, idx: number)

    }

    private _updateEffectSymbol(lineData: SeriesData, idx: number) {
        const itemModel = lineData.getItemModel<LineDrawModelOption>(idx);
        const effectModel = itemModel.getModel('effect');
        let size = effectModel.get('symbolSize');
        const symbolType = effectModel.get('symbol');
        if (!zrUtil.isArray(size)) {
            size = [size, size];
        }

        const lineStyle = lineData.getItemVisual(idx, 'style');
        const color = effectModel.get('color') || (lineStyle && lineStyle.stroke);
        let symbol = this.childAt(1) as ECSymbolOnEffectLine;

        if (this._symbolType !== symbolType) {
            // Remove previous
            this.remove(symbol);

            symbol = createSymbol(
                symbolType, -0.5, -0.5, 1, 1, color
            ) as ECSymbolOnEffectLine;
            symbol.z2 = 100;
            symbol.culling = true;

            this.add(symbol);
        }

        // Symbol may be removed if loop is false
        if (!symbol) {
            return;
        }

        // Shadow color is same with color in default
        symbol.setStyle('shadowColor', color as ColorString);
        symbol.setStyle(effectModel.getItemStyle(['color']));

        symbol.scaleX = size[0];
        symbol.scaleY = size[1];

        symbol.setColor(color);

        this._symbolType = symbolType;
        this._symbolScale = size;

        this._updateEffectAnimation(lineData, effectModel, idx);
    }

    private _updateEffectAnimation(
        lineData: SeriesData,