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{ get, isBoolean } from '@antv/util';\nimport { DIRECTION } from '../constant';\nimport { Coordinate, Scale } from '../dependents';\nimport { AxisCfg, AxisOption, Point, Region } from '../interface';\nimport { getName } from './scale';\nimport { vec2 } from '@antv/matrix-util';\n\n/**\n * @ignore\n * get axis relative region ( 0 ~ 1) by direction when coordinate is rect\n * @param direction\n * @returns axis coordinate region\n */\nexport function getLineAxisRelativeRegion(direction: DIRECTION): Region {\n let start;\n let end;\n\n switch (direction) {\n case DIRECTION.TOP:\n start = { x: 0, y: 1 };\n end = { x: 1, y: 1 };\n break;\n case DIRECTION.RIGHT:\n start = { x: 1, y: 0 };\n end = { x: 1, y: 1 };\n break;\n case DIRECTION.BOTTOM:\n start = { x: 0, y: 0 };\n end = { x: 1, y: 0 };\n break;\n case DIRECTION.LEFT:\n start = { x: 0, y: 0 };\n end = { x: 0, y: 1 };\n break;\n default:\n start = end = { x: 0, y: 0 };\n }\n\n return { start, end };\n}\n\n/**\n * @ignore\n * get axis relative region ( 0 ~ 1) by direction when coordinate is polar\n * @param coordinate\n * @returns axis coordinate region\n */\nexport function getCircleAxisRelativeRegion(coordinate: Coordinate) {\n let start;\n let end;\n if (coordinate.isTransposed) {\n start = {\n x: 0,\n y: 0,\n };\n end = {\n x: 1,\n y: 0,\n };\n } else {\n start = {\n x: 0,\n y: 0,\n };\n end = {\n x: 0,\n y: 1,\n };\n }\n\n return { start, end };\n}\n\n/**\n * @ignore\n * get the axis region from coordinate\n * @param coordinate\n * @param direction\n * @returns the axis region (start point, end point)\n */\nexport function getAxisRegion(coordinate: Coordinate, direction: DIRECTION): Region {\n let region = { start: { x: 0, y: 0 }, end: { x: 0, y: 0 } };\n if (coordinate.isRect) {\n region = getLineAxisRelativeRegion(direction);\n } else if (coordinate.isPolar) {\n region = getCircleAxisRelativeRegion(coordinate);\n }\n\n const { start, end } = region;\n return {\n start: coordinate.convert(start),\n end: coordinate.convert(end),\n };\n}\n\n/**\n * @ignore\n * get axis factor\n * @param coordinate\n * @param direction\n * @returns factor\n */\nexport function getAxisFactor(coordinate: Coordinate, direction: DIRECTION): number {\n // rect coordinate, by direction\n if (coordinate.isRect) {\n return coordinate.isTransposed\n ? [DIRECTION.RIGHT, DIRECTION.BOTTOM].includes(direction)\n ? 1\n : -1\n : [DIRECTION.BOTTOM, DIRECTION.RIGHT].includes(direction)\n ? -1\n : 1;\n }\n\n // polar y axis, by angle\n if (coordinate.isPolar) {\n const startAngle = coordinate.x.start;\n return startAngle < 0 ? -1 : 1;\n }\n\n return 1;\n}\n\n/**\n * @ignore\n * whether the axis isVertical\n * @param region\n * @returns isVertical\n */\nexport function isVertical(region: Region): boolean {\n const { start, end } = region;\n\n return start.x === end.x;\n}\n\n/**\n * @ignore\n * get factor by region (real position)\n * @param region\n * @param center\n * @returns factor\n */\nexport function getAxisFactorByRegion(region: Region, center: Point): number {\n const { start, end } = region;\n\n const isAxisVertical = isVertical(region);\n\n // 垂直\n if (isAxisVertical) {\n // 左方,从下到上、右方,从上到下\n if ((start.y - end.y) * (center.x - start.x) > 0) {\n return 1;\n } else {\n return -1;\n }\n } else {\n // 下方,从左到右、上方,从右到做\n if ((end.x - start.x) * (start.y - center.y) > 0) {\n return -1;\n } else {\n return 1;\n }\n }\n}\n\n/**\n * @ignore\n * get the axis cfg from theme\n * @param theme view theme object\n * @param direction axis direction\n * @returns axis theme cfg\n */\nexport function getAxisThemeCfg(theme: object, direction: string): object {\n return get(theme, ['components', 'axis', direction], {});\n}\n\n/**\n * @ignore\n * get circle axis center and radius\n * @param coordinate\n */\nexport function getCircleAxisCenterRadius(coordinate: Coordinate) {\n // @ts-ignore\n const { x, y, circleCenter: center } = coordinate;\n const isReflectY = y.start > y.end;\n const start = coordinate.isTransposed\n ? coordinate.convert({\n x: isReflectY ? 0 : 1,\n y: 0,\n })\n : coordinate.convert({\n x: 0,\n y: isReflectY ? 0 : 1,\n });\n\n const startVector: [number, number] = [start.x - center.x, start.y - center.y];\n const normalVector: [number, number] = [1, 0];\n const startAngle =\n start.y > center.y ? vec2.angle(startVector, normalVector) : vec2.angle(startVector, normalVector) * -1;\n const endAngle = startAngle + (x.end - x.start);\n const radius = Math.sqrt((start.x - center.x) ** 2 + (start.y - center.y) ** 2);\n\n return {\n center,\n radius,\n startAngle,\n endAngle,\n };\n}\n\n/**\n * @ignore\n * 从配置中获取单个字段的 axis 配置\n * @param axes\n * @param field\n * @returns the axis option of field\n */\nexport function getAxisOption(axes: Record<string, AxisOption> | boolean, field: string) {\n if (isBoolean(axes)) {\n return axes === false ? false : {};\n }\n return get(axes, [field]);\n}\n\n/**\n * @ignore\n * 如果配置了 position，则使用配置\n * @param axisOption\n * @param def\n */\nexport function getAxisDirection(axisOption: AxisOption, def: DIRECTION): DIRECTION {\n return get(axisOption, 'position', def);\n}\n\n/**\n * 获取 axis 的 title 文本\n * @param scale\n * @param axisOption\n */\nexport function getAxisTitleText(scale: Scale, axisOption: AxisCfg): string {\n return get(axisOption, ['title', 'text'], getName(scale));\n}\n"]} |