smig/excalidraw
1
0
Fork 0
mirror of https://github.com/excalidraw/excalidraw.git synced 2025-05-03 10:00:07 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Prefer arrow functions (#2344)

Browse source
This commit is contained in:
Lipis 2020-11-06 22:06:39 +02:00 • committed by GitHub
parent e05acd6fd9
commit a20f3240fd
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
19 changed files with 304 additions and 336 deletions
Download patch file Download diff file Expand all files Collapse all files

48
src/galines.ts
View file

@ -15,48 +15,38 @@ import { Line, Point } from "./ga";
*/
// Returns line with direction (x, y) through origin
export function vector(x: number, y: number): Line {
return GA.normalized([0, 0, -y, x, 0, 0, 0, 0]);
}
export const vector = (x: number, y: number): Line =>
GA.normalized([0, 0, -y, x, 0, 0, 0, 0]);
// For equation ax + by + c = 0.
export function equation(a: number, b: number, c: number): Line {
return GA.normalized([0, c, a, b, 0, 0, 0, 0]);
}
export const equation = (a: number, b: number, c: number): Line =>
GA.normalized([0, c, a, b, 0, 0, 0, 0]);
export function through(from: Point, to: Point): Line {
return GA.normalized(GA.join(to, from));
}
export const through = (from: Point, to: Point): Line =>
GA.normalized(GA.join(to, from));
export function orthogonal(line: Line, point: Point): Line {
return GA.dot(line, point);
}
export const orthogonal = (line: Line, point: Point): Line =>
GA.dot(line, point);
// Returns a line perpendicular to the line through `against` and `intersection`
// going through `intersection`.
export function orthogonalThrough(against: Point, intersection: Point): Line {
return orthogonal(through(against, intersection), intersection);
}
export const orthogonalThrough = (against: Point, intersection: Point): Line =>
orthogonal(through(against, intersection), intersection);
export function parallel(line: Line, distance: number): Line {
export const parallel = (line: Line, distance: number): Line => {
const result = line.slice();
result[1] -= distance;
return (result as unknown) as Line;
}
};
export function parallelThrough(line: Line, point: Point): Line {
return orthogonal(orthogonal(point, line), point);
}
export const parallelThrough = (line: Line, point: Point): Line =>
orthogonal(orthogonal(point, line), point);
export function distance(line1: Line, line2: Line): number {
return GA.inorm(GA.meet(line1, line2));
}
export const distance = (line1: Line, line2: Line): number =>
GA.inorm(GA.meet(line1, line2));
export function angle(line1: Line, line2: Line): number {
return Math.acos(GA.dot(line1, line2)[0]);
}
export const angle = (line1: Line, line2: Line): number =>
Math.acos(GA.dot(line1, line2)[0]);
// The orientation of the line
export function sign(line: Line): number {
return Math.sign(line[1]);
}
export const sign = (line: Line): number => Math.sign(line[1]);