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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | 8410x 33640x 33640x 8410x | import type { Types } from '@cornerstonejs/core';
import { vec3 } from 'gl-matrix';
type Sphere = {
center: Types.Point3 | vec3;
radius: number;
};
/**
* Checks if a point is inside a sphere. Note: this is similar to the
* `pointInEllipse` function, but since we don't need checks for the
* ellipse's rotation in different views, we can use a simpler equation
* which would be faster (no if statements).
*
* @param sphere - Sphere object with center and radius
* @param pointLPS - the point to check in world coordinates
* @returns boolean
*/
export default function pointInSphere(
sphere: Sphere,
pointLPS: Types.Point3
): boolean {
const { center, radius } = sphere;
const [x, y, z] = pointLPS;
const [x0, y0, z0] = center;
return (x - x0) ** 2 + (y - y0) ** 2 + (z - z0) ** 2 <= radius ** 2;
}
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