Create drawings from models (Creo Elements/Direct Annotation) > Hidden lines calculation
  
Hidden lines calculation
You can specify whether or not hidden lines should be calculated in views. The figure shows the different results of calculating hidden-line geometry.
Item
Description
1
Hidden line geometry is not calculated (Hidden Lines Mode is Not Calculated). Instead, Creo Elements/Direct Annotation treats hidden-line geometry as standard geometry and displays it as solid geometry.
2 to 5
Hidden line geometry is calculated (Hidden Lines Mode is Visible). Some of the line type options to display hidden lines are the following:
2–Dashed line type.
3–Phantom line type.
4–Invisible line type.
5–Solid line type.