This function allows the user to trim elements using one or multiple closed or open trim lines. The trim process is performed in accordance with the defined vector / direction. The user can determine to keep the trimmed elements or not. The trimmed elements will be included in a new part named TRIMOUT. The Element Trimming dialog box is illustrated in Figure 5.3.19.
Figure 5.3.19 Element Trimming dialog box
l INNER BOUNDARY
This function allows the user to select one or multiple closed inner trim boundary line.
l OUTER BOUNDARY
This function allows the user to select one or multiple closed outer trim boundary line. If the open outer trim boundary line is selected, only one line can be trimmed each time.
l REMOVE
This function allows the user to remove the selected trim lines. Click this button to display a dialog box as illustrated in Figure 5.3.20. In the list of this dialog box, the user can remove the unnecessary trim lines.
Figure 5.3.20 Selected Line List
l LOCATION
This function allows the user to move the location of local coordinates without changing the projection direction.
l USER DEFINE
This function allows the user to define the projection direction. The user must define a vector (projection direction) for trim line. Clicking on this button, the program will pop up a Define Vector dialog box. Detailed operation about defining vector refers to Section 6.1.1.5 Edit Surface.
l KEEP TRIMMED
This function allows the user to keep the trimmed elements. If this option is not selected, the program will delete the trimmed elements.
l RATIO
This function allows the user to set the trimming ratio. The range of trimming is from 0.2 to 0.45, which restricts the size of small elements generated during trimming. Large elements are generated with large ratio and small elements are generated with small ratio. The default is 0.4.
After selecting one or multiple trim lines for element trimming, when the user selects trim lines again, the program will pop up a DYNAFORM Question dialog box as shown in Figure 5.3.21. The user can click YES to continue the trimming of blank, but the previous trimming operation cannot be restored. If NO is selected, the user cannot trim the element unless re-entering the Element Trimming dialog box.
Figure 5.3.21 DYNAFORM Question dialog box