94 lines
2.3 KiB
TypeScript
94 lines
2.3 KiB
TypeScript
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/**
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* Find or counts the intersections between two SVG paths.
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*
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* Returns a number in counting mode and a list of intersections otherwise.
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*
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* A single intersection entry contains the intersection coordinates (x, y)
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* as well as additional information regarding the intersecting segments
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* on each path (segment1, segment2) and the relative location of the
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* intersection on these segments (t1, t2).
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*
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* The path may be an SVG path string or a list of path components
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* such as `[ [ 'M', 0, 10 ], [ 'L', 20, 0 ] ]`.
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*
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* @example
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*
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* var intersections = findPathIntersections(
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* 'M0,0L100,100',
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* [ [ 'M', 0, 100 ], [ 'L', 100, 0 ] ]
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* );
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*
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* // intersections = [
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* // { x: 50, y: 50, segment1: 1, segment2: 1, t1: 0.5, t2: 0.5 }
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* // ];
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*
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* @param {String|Array<PathComponent>} path1
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* @param {String|Array<PathComponent>} path2
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* @param {Boolean} [justCount=false]
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*
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* @return {Array<Intersection>|Number}
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*/
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declare function findPathIntersections(path1: Path, path2: Path, justCount: true): number;
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declare function findPathIntersections(path1: Path, path2: Path, justCount: false): Intersection[];
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declare function findPathIntersections(path1: Path, path2: Path): Intersection[];
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declare function findPathIntersections(path1: Path, path2: Path, justCount?: boolean): Intersection[] | number;
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export = findPathIntersections;
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/**
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* A string in the form of 'M150,150m0,-18a18,18,0,1,1,0,36a18,18,0,1,1,0,-36z'
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* or something like:
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* [
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* ['M', 1, 2],
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* ['m', 0, -2],
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* ['a', 1, 1, 0, 1, 1, 0, 2 * 1],
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* ['a', 1, 1, 0, 1, 1, 0, -2 * 1],
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* ['z']
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* ]
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*/
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declare type Path = string | PathComponent[];
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declare type PathComponent = any[];
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declare interface Intersection {
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/**
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* Segment of first path.
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*/
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segment1: number;
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/**
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* Segment of first path.
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*/
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segment2: number;
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/**
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* The x coordinate.
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*/
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x: number;
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/**
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* The y coordinate.
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*/
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y: number;
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/**
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* Bezier curve for matching path segment 1.
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*/
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bez1: number[];
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/**
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* Bezier curve for matching path segment 2.
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*/
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bez2: number[];
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/**
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* Relative position of intersection on path segment1 (0.5 => in middle, 0.0 => at start, 1.0 => at end).
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*/
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t1: number;
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/**
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* Relative position of intersection on path segment2 (0.5 => in middle, 0.0 => at start, 1.0 => at end).
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*/
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t2: number;
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}
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