Rotates a 3D vertex around the Y-axis (in the XZ plane) by a given angle in radians.
The vertex to rotate, represented as an object with x, y, and z coordinates.
The angle of rotation in radians.
A new Vertex3d object representing the rotated vertex.
Vertex3d
Rotates a 3D vertex around the Y-axis (in the XZ plane) by a given angle in radians.