Differences between projected line

[Anonymous]

Hi everybody,

When I project a line in an assembly, sometimes the color of the projected line in yellow with a specific sign and sometimes it is in blue with fix constraint (see photos I have attached). I do not know why?

Is there anybody who knows the reason and the differences between these two types of projected line?

thanks

[johnsonshiue]

Hi! The line color depends on the color theme selected in Tools -> App Options -> Colors. When you see a "Project" constraint, it means there is association between the projected line and the source geometry. In some cases, projecting an edge does not lead to "Project" constraints. For example, project work geometry from an assembly to a part. You will get "Fixed" constraint instead of "Project" constraint.

Many thanks!