Axes is a visual representation of the three axes.
NewAxes returns a pointer to a new Axes object.
Grid is a visual representation of a grid.
NewGrid creates and returns a pointer to a new grid helper with the specified size and step.
Normals is the visual representation of the normals of a target object.
NewNormals creates a normals helper for the specified IGraphic, with the specified size, color, and lineWidth.
Update should be called in the render loop to update the normals based on the target object.