wNode:

The wNode is a point in the 3D space. It is the root of the wheel design. It can be added in the wheel degign panel using 'Add wNode' button . It has three parameters that define the position of the wNode in cylindrical coordinate system. Below are the parameters of wNode.

r: Radial component of the position of wNode. It defines how far is the wNode from wheel axis. A value r=0 means that wNode is on the center of wheel and a value r=1 means that wNode is on the outer perephery of the wheel.

l: Longitudinal component of the position of wNode. It defines how far is the wNode from the outer side of the wheel. A value l=0 means that wNode is on the outer of wheel and a value l=-0.75 means that wNode is on the inner side of the wheel.

Th: Angular component of the position of wNode. It defines the angle between line joining the wheel axle and wNode, and the vertical line. A wNode with Th=0 lies on the vertical line passing through the wheel center.