Z-rules noding options.
When one line is attached to another or two lines are noded together, VrOne may offer options for the action to be taken on the elevations of the two node points. The four Z rules are as follows.
When two lines are nodded, the elevation of each node point is computed from the point in front and behind the node point. When one line is attached to another, the elevation is taken from the input device. This option does not modify the current elevations.
Means the two elevations from each line.
Z from 1st line
Sets the elevation of the node point from the second line to the elevation of the node point from the first line.
Z from 2nd line
Sets the elevation of the node point from the first line to the elevation of the node point from the second line.
Consider the following two crossing lines. The table below shows the elevations for each line at the intersection point based on each Z Rule.