Ycad - Java CAD library SVN Repo

1) Changes to view transform.
2) Add display transform.
3) Deactivate drawing of extent, limit, vport lines.

Add constructor with arguments to generate point.

Add constructor with arguments to generate line.

Add note.

Change variable accessability.

1) Add world constants.
2) Add set, normalize, angle methods.

Redo for 3D.

1) Add 3D transform and use vport.
2) Redo matrix code.
3) Add drawCross().
4) Change drawing of indicators and extent lines.
5) Draw box around limit and vport area.

Change use of scale variable.

1) Default xtruDir to (0,0,1).
2) Add 3D transform.