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6.6 KiB
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// 画布半径\n // 画布圆心\n const center = { x: 0.5, y: 0.5 };\n // 每隔分面间隔的弧度\n const avgAngle = Math.PI * 2 / count;\n\n // 当前分面所在的弧度\n const angle = -1 * Math.PI / 2 + avgAngle * index;\n // TODO 没看懂\n const facetR = r / (1 + 1 / Math.sin(avgAngle / 2));\n // 分面的中心点\n const middle = getAnglePoint(center, r - facetR, angle);\n const startAngle = Math.PI * 5 / 4; // 右上角\n const endAngle = Math.PI * 1 / 4; // 左下角\n\n return {\n start: getAnglePoint(middle, facetR, startAngle),\n end: getAnglePoint(middle, facetR, endAngle)\n };\n }\n\n protected afterEachView(view: View, facet: CircleData) {\n this.processAxis(view, facet);\n }\n\n protected beforeEachView(view: View, facet: CircleData) {\n }\n\n protected generateFacets(data: Datum[]): CircleData[] {\n const { fields, type } = this.cfg;\n const [field] = fields;\n if (!field) {\n throw new Error('No `fields` specified!');\n }\n\n const values = this.getFieldValues(data, field);\n const count = values.length;\n\n const rst = [];\n values.forEach((value: any, index: number) => {\n const conditions = [{ field, value, values }];\n const facetData = filter(data, this.getFacetDataFilter(conditions));\n\n const facet: CircleData = {\n type,\n data: facetData,\n region: this.getRegion(count, index),\n\n columnValue: value,\n columnField: field,\n columnIndex: index,\n columnValuesLength: count,\n\n rowValue: null,\n rowField: null,\n rowIndex: 0,\n rowValuesLength: 1,\n };\n rst.push(facet);\n });\n return rst;\n }\n\n protected getXAxisOption(x: string, axes: any, option: AxisCfg, facet: CircleData): object {\n // 不做任何处理\n return option;\n }\n\n\n /**\n * 设置 y 坐标轴的文本、title 是否显示\n * @param y\n * @param axes\n * @param option\n * @param facet\n */\n protected getYAxisOption(y: string, axes: any, option: AxisCfg, facet: CircleData): object {\n // 不做任何处理\n return option;\n }\n\n /**\n * facet title\n */\n private renderTitle() {\n each(this.facets, (facet: CircleData) => {\n const { columnValue, view } = facet;\n\n const config = deepMix({\n position: [ '50%', '0%' ] as [string, string],\n content: columnValue,\n }, getFactTitleConfig(DIRECTION.TOP), this.cfg.title);\n\n view.annotation().text(config);\n });\n }\n}\n"]} |