1ed53b153c
* build: enable consistent type imports eslint rule * change to warn * fix the warning in example and excalidraw-app * fix packages * enable type annotations and throw error for the rule
43 lines
977 B
TypeScript
43 lines
977 B
TypeScript
import * as GA from "./ga";
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import * as GALine from "./galines";
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import type { Point, Line } from "./ga";
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import { join } from "./ga";
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export const from = ([x, y]: readonly [number, number]): Point => [
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0,
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0,
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0,
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0,
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y,
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x,
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1,
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0,
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];
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export const toTuple = (point: Point): [number, number] => [point[5], point[4]];
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export const abs = (point: Point): Point => [
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0,
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0,
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0,
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0,
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Math.abs(point[4]),
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Math.abs(point[5]),
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1,
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0,
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];
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export const intersect = (line1: Line, line2: Line): Point =>
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GA.normalized(GA.meet(line1, line2));
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// Projects `point` onto the `line`.
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// The returned point is the closest point on the `line` to the `point`.
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export const project = (point: Point, line: Line): Point =>
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intersect(GALine.orthogonal(line, point), line);
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export const distance = (point1: Point, point2: Point): number =>
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GA.norm(join(point1, point2));
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export const distanceToLine = (point: Point, line: Line): number =>
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GA.joinScalar(point, line);
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