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Check if point (3D) is inside the ellipsoid - positioned, and rotated

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Ellipsoid

Usage

Check if point (3D) is inside the ellipsoid - which is repositioned (translated) by its center, and rotated by roll,pitch,yaw angles.

obj = PointInOrientedEllipsoid(center, point, A, B, C, roll, pitch, yaw)
  • param center {Vector3D}

    default value: new Vector3D(0, 0, 0)

  • param point {Point3D}

    default value: new Point3D(0, 0, 0)

  • param A {Number} axis length

    default value: 0

  • param B {Number} axis length

    default value: 0

  • param C {Number} axis length

    default value: 0

  • roll (in degress)

    default value: 0

  • pitch (in degrees)

    default value: 0

  • yaw (in degrees)

    default value: 0

return {Object}

  • center: {Point3D} the center of the ellipsoid

  • point: {Point3D} the point checked if it is inside the ellipsoid

  • polar: {Object} the point's polar coordinates

    • distance: the distance between center and point

    • phi: degrees in range [-180..180]

    • theta: degrees in range [-90..90]

  • result: {Number} if this value >= 1, the point is not inside the ellipsoid

  • inside: {Boolean}

  • rMatrix: {Matrix3D} rotation matrix, just for debug

  • R: {Matrix3D} rotation matrix, just for debug

Example

let obj = PointInOrientedEllipsoid(new Vector3D(10,-20,30), new Point(9,-19,29), 9, 3, 3, 0, 0, 0);

console.log(obj);  // we expect the following result:
                   // {
                   //     bool: true,
                   //     center: { x: 10, y: -20, z: 30 },
                   //     point: { x: 9, y: -19, z: 29 },
                   //     polar: {
                   //         distance: 35.81898937714463,
                   //         phi: -32.03551940773309, 
                   //         theta: 72.75854060106003 
                   //     },
                   //     result: 0.2345679012345679,
                   //     inside: true,
                   //     rMatrix: {Object: Matrix3D},
                   //     R: {Object: Matrix3D}
                   // }

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Check if point (3D) is inside the ellipsoid - positioned, and rotated

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