Check Tab - Surface Patches Dialog

The Check tab is used to:

• Check the fitted surface against the data points used to generate it.

• Check the accuracy of adjacent boundaries.

• Check the accuracy of an offset surface.

• Check for possible problems in the surface if it is to be used with AVEVA Marine productions modules

  

To check the surface fit to the points

1. Select Points.

2. Select the sets of orthogonal curves to compare using the Sections, Buttocks and Waterlines check boxes.

3. From the list of patches select the individual patches required or use the All check box to select them all and then click the Check button.

   • The Show Points toggle check box can be used to display the points being checked.

   • The Output to file check box can be used to direct the output to a file.

   The patches will be displayed in the graphics window as they are checked, and information on the maximum distance, the mean difference and the standard deviation will be displayed in the Output Window.

To check the accuracy of adjacent patches

4. Select the Boundary radio button.

5. From the list of patches select the individual patches required or use the All check box to select them all and then click the Check button.

   By default, the system compares adjacent patch boundaries to a tolerance of 0.000001 meters. This is the tolerance required by AVEVA Initial Design Surface.

6. To change the tolerance enter the required value in the Tolerance edit box.

   Any adjacent boundaries that do not match will be highlighted in the graphics display window.

   While patches are being checked a Progress dialog will appear giving an indication of the completion of calculation.

7. Selecting the Surface option allows the user to check patches of the currently selected offset surface against the OUTER surface.

8. Selecting the Intersect option allows the user to highlight possible problems when using the surface in AVEVA Marine production modules. Selected patches are intersected at stored orthogonal curve positions. The intersections are drawn with any disconnected curve sections highlighted. These disconnected curve sections are also listed in the Output Window. The disconnected sections highlight possible gaps when generating intersections in the production modules.