Hello
So if I define a XYZ start and XYZ end point of a line, and the first Z=0 and the second Z=.046, the depth of cut will linearly interpolate a gradual change in Z along the length of the line with the engrave MOP.
Yes, you can edit the Z coordinate of polyline points with the (collection) property.
For a straight line, you can draw the line on XY plane then rotate it 90°.(saying Y will become Z)
You can also draw a pointlist, explode this point list, then select the points you want to move, and move them all at a time in Z with the nummove plugin ; when each point is where you want, select all points > edit/join to get an unique pointlist, then Ctrl+P to convert the pointlist to a polyline that can be engraved.
This ability of an engrave mop to follow Z position is very useful.
It is often used by plugins like Curved surface, Texturize, profil to helix, etc.
http://www.atelier-des-fougeres.fr/Cambam/Aide/Plugins/curved_surface.htmlhttp://www.atelier-des-fougeres.fr/Cambam/Aide/Plugins/Texturize.htmlhttp://www.atelier-des-fougeres.fr/Cambam/Aide/Plugins/Spiral2helix.html++
David