there is an occasional glitch that sometimes shows up when the rotation angle is not zero.
The attached svg was drawn with the parameters:
lines of latitude = 10
lines of longitude = 16
tilt = 65
rotation = 40
one globe has the lines hidden, the other not hidden. In the hidden case, there is a line of longitude that does not pass through the North pole. Comparing the two drawings it looks like the foreground and background lines are interchanged at this longitude, a line that should have been hidden in the background has not been hidden. Will investigate this after Christmas.
there is an occasional glitch that sometimes shows up when the rotation angle is not zero.
The attached svg was drawn with the parameters:
lines of latitude = 10
lines of longitude = 16
tilt = 65
rotation = 40
one globe has the lines hidden, the other not hidden. In the hidden case, there is a line of longitude that does not pass through the North pole. Comparing the two drawings it looks like the foreground and background lines are interchanged at this longitude, a line that should have been hidden in the background has not been hidden. Will investigate this after Christmas.