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

feat: Orthogonal (elbow) arrows for diagramming (#8299)

Browse source 
Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>
This commit is contained in:
Márk Tolmács 2024-08-01 18:39:03 +02:00 • committed by GitHub
parent a133a70e87
commit 15e019706d
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
69 changed files with 5415 additions and 1144 deletions
Download patch file Download diff file Expand all files Collapse all files

18
packages/utils/geometry/geometry.ts
View file

@ -16,10 +16,22 @@ const DEFAULT_THRESHOLD = 10e-5;
*/
// the two vectors are ao and bo
export const cross = (a: Point, b: Point, o: Point) => {
export const cross = (
a: Readonly<Point>,
b: Readonly<Point>,
o: Readonly<Point>,
) => {
return (a[0] - o[0]) * (b[1] - o[1]) - (a[1] - o[1]) * (b[0] - o[0]);
};
export const dot = (
a: Readonly<Point>,
b: Readonly<Point>,
o: Readonly<Point>,
) => {
return (a[0] - o[0]) * (b[0] - o[0]) + (a[1] - o[1]) * (b[1] - o[1]);
};
export const isClosed = (polygon: Polygon) => {
const first = polygon[0];
const last = polygon[polygon.length - 1];
@ -36,7 +48,9 @@ export const close = (polygon: Polygon) => {
// convert radians to degress
export const angleToDegrees = (angle: number) => {
return (angle * 180) / Math.PI;
const theta = (angle * 180) / Math.PI;
return theta < 0 ? 360 + theta : theta;
};
// convert degrees to radians