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Further math refactor and simplifications

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This commit is contained in:
Mark Tolmacs 2024-09-23 17:13:40 +02:00
parent 41885b4bb3
commit 0e2f8c958e
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18 changed files with 262 additions and 175 deletions
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29
packages/math/arc.ts
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@ -1,22 +1,29 @@
import { cartesian2Polar } from "./angle";
import type {
GlobalPoint,
LocalPoint,
SymmetricArc,
ViewportPoint,
} from "./types";
import type { GenericPoint, Radians, SymmetricArc } from "./types";
import { PRECISION } from "./utils";
/**
* Constructs a symmetric arc defined by the originating circle radius
* the start angle and end angle with 0 radians being the "northest" point
* of the circle.
*
* @param radius The radius of the circle this arc lies on
* @param startAngle The start angle with 0 radians being the "northest" point
* @param endAngle The end angle with 0 radians being the "northest" point
* @returns The constructed symmetric arc
*/
export function arc(radius: number, startAngle: Radians, endAngle: Radians) {
return { radius, startAngle, endAngle } as SymmetricArc;
}
/**
* Determines if a cartesian point lies on a symmetric arc, i.e. an arc which
* is part of a circle contour centered on 0, 0.
*/
export const isPointOnSymmetricArc = <
P extends GlobalPoint | LocalPoint | ViewportPoint,
>(
export function isPointOnSymmetricArc<P extends GenericPoint>(
{ radius: arcRadius, startAngle, endAngle }: SymmetricArc,
point: P,
): boolean => {
): boolean {
const [radius, angle] = cartesian2Polar(point);
return startAngle < endAngle
@ -24,4 +31,4 @@ export const isPointOnSymmetricArc = <
startAngle <= angle &&
endAngle >= angle
: startAngle <= angle || endAngle >= angle;
};
}