The Y axis is up and down. Finally, the Z axis is in and out. All linear measurements are in meters and angle measurements are in radians. This may be a good time to brush up on degree to radian conversion. These are attributes that must be defined in order to be used.
Shapes are hollow.
This lesson will teach you how to draw the four basic predefined shapes in VRML without any complications, such as color or light. The four basic shape types in VRML are the cube, the sphere, the cylinder,and the cone. All of these are the typical shapes commonly thought of, except for the cube. The cube is a six sided box that does not necessarily have width, length, and height all equivalent.