Hullforms must meet several high-level requirements for NPT (non-procedural thickening) and ACIS detailing. The following table summarizes the requirements for hullform models used in Smart 3D.
Source |
Description |
Checking and Repairing |
---|---|---|
Smart 3D |
Inward-pointing normals |
You can visually check the normals in the graphic view. To view the normals, you can use the Show Normals Command. In addition, you can use the Process Geometry Data Command to check and repair the normals. To check the normals, use the Outward Normals option on the Check Settings Dialog, and to repair the normals, use the Orient Normals option on the Repair Settings Dialog. |
Smart 3D |
Single lump sheet-body |
You can visually check the sheet-body in the graphic view. In addition, you can use the Process Geometry Data Command to check for multi-lump bodies. On the Check Settings Dialog, use the Multi-lump Bodies option. |
Smart 3D |
Double-sided sheet-body |
You can visually check the sheet-body in the graphic view. If the sheet-body is double-sided, you can see both sides of it when you rotate it. If it is not double-sided, one side disappears when you rotate it. Convexity errors should be avoided, but are allowable in early design. Use the Process Geometry Data Command to check the continuity. On the Options Dialog, you can set the Acis check level. |
NPT |
Non-planar patch edges aligned |
You can visually check the patch edges in the graphic view. You can also use the Process Geometry Data Command. The Check Settings Dialog provides the Non-Aligned Edges option. |
NPT |
Uniform control point mesh size for non-planar patches |
You can visually check the control point mesh in the graphic view. You can also use the Process Geometry Data Command. The Check Settings Dialog provides the Non-Uniform Control Points option. |
NPT |
Only planar "trimmed" patches supported |
You can visually check the patches in the graphic view. You can also use the Process Geometry Data Command. The Check Settings Dialog provides the Trimmed Non-Planar Surfaces option. |