| Name | Description |
|---|---|
| Command | |
| LineTool | tool used to draw line |
| Matrix4 | Matrix used to transform between ucs coordinate and world coordinate. |
| SlabProfile | SlabProfile class contains Geometry information of Slab, and contains methods used to edit slab's Shape. |
| SlabShapeEditingForm | window form contains one picture box to show the profile of slab geometry. user can add vertex and crease. User can edit slab shape via vertex and crease too. |
| Vector4 | Vector4 is a homogeneous coordinate class used to store vector and contain method to handle the vector |