import { PathProps } from '../../kernel/components';
/**
 * sugar 组件共用的视觉 props
 */
export type PathVisualProps = Omit<PathProps, 'children'>;
/**
 * 从 sugar props 拣出视觉 props 透传给底层 `<Path>`
 *
 * @description `id` / `meta` / `animations` 透传给底层 `<Path>`；事件 `on<Event>` props 留在 sugar 元素上，
 *   仍按同一个 id 绑定
 */
export declare const pickPathVisual: (props: object) => PathVisualProps;
/** 校验点输入必须是字面 [x, y] 坐标 */
export declare const requireXY: (value: unknown, sugarName: string, propName: string) => [number, number];
/** 两点中点 */
export declare const midpoint: (a: [number, number], b: [number, number]) => [number, number];
/** sugar 形状的 box 输入 */
export type ShapeBox = {
    x: number;
    y: number;
    width: number;
    height: number;
} | {
    origin: [number, number];
    width: number;
    height: number;
};
/** box 的扩张 / 收缩控制 */
export type BoxAdjustmentProps = {
    inset?: number;
    outset?: number;
};
/** 归一化后的 box 坐标 */
export type NormalizedShapeBox = {
    left: number;
    top: number;
    right: number;
    bottom: number;
};
/** 把 box 对象转成归一化的四边 */
export declare const normalizeShapeBox: (value: ShapeBox, sugarName: string, propName: string) => NormalizedShapeBox;
/** 把两个对角点转成归一化的四边 */
export declare const normalizeCornerBox: (corner1: [number, number], corner2: [number, number]) => NormalizedShapeBox;
/** 对归一化 box 施加 inset / outset */
export declare const adjustShapeBox: (box: NormalizedShapeBox, props: BoxAdjustmentProps, sugarName: string) => NormalizedShapeBox;
/** box 中心 */
export declare const boxCenter: (box: NormalizedShapeBox) => [number, number];
/** box 尺寸 */
export declare const boxSize: (box: NormalizedShapeBox) => [number, number];
/** 轴对齐椭圆 / 圆上由极角求笛卡尔点 */
export declare const polarXY: (center: [number, number], radiusX: number, radiusY: number, angleDeg: number) => [number, number];
/** 轴对齐椭圆上的正多边形顶点 */
export declare const regularPolygonVertices: (center: [number, number], radiusX: number, radiusY: number, sides: number, rotateDeg: number) => Array<[number, number]>;
/** 圆上的星形顶点 */
export declare const starVertices: (center: [number, number], outerRadius: number, innerRadius: number, points: number, rotateDeg: number) => Array<[number, number]>;
/** circle / ellipse / arc 等 sugar 共用的角度输入 */
export type AngleInput = {
    startAngle?: number;
    endAngle?: number;
    sweepAngle?: number;
};
/** 解析两角规格（startAngle / endAngle / sweepAngle 任取两个） */
export declare const resolveAngles: (input: AngleInput, sugarName: string, required?: boolean) => {
    startAngle: number;
    endAngle: number;
} | undefined;
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