API Reference > geometry-core > CartesianGeometry > Ray3d > perpendicularPartOfVectorToTarget perpendicularPartOfVectorToTarget Method Construct a vector from ray.origin to target point. return the part of the vector that is perpendicular to ray.direction. i.e. return the shortest vector from the ray to the point. perpendicularPartOfVectorToTarget(targetPoint: Readonly<WritableXYAndZ>, result?: Vector3d): Vector3d Parameter Type Description targetPoint Readonly<WritableXYAndZ> result Vector3d Returns - Vector3d Defined in geometry3d/Ray3d.ts Line 299 Last Updated: 11 June, 2024