I am going to answer my own question. > Is there maybe another way? Can I say "draw the line, erase the line > within the area of this elliptical 'circle', draw this elliptical > 'circle'", in that sequence?
Yes. "unfill" is not useful. It actually fills with the background colour, which looks wrong when opacity is <100, and it obscures other things behind it. "clip" is a useful function, but it can only apply slipping to show items *within* a path, not outside it. The answer is to clip showing the whole drawing area (a box from -infinity->infinity in x and y planes), and part way around, come in to the inner path (an ellipse in my case), and traverse it in the opposite direction to the direction that the drawing area was traversed. Then go back out to the edge of the drawing area on exactly the same path as was used to come in to the inner path. Circles are natively drawn from the right side, anticlockwise, to make sure to traverse the outer edges of the drawing area clockwise: ________________ | ___ | | (___)----| |________________| That was a fun learning exercise. Results will be on the wiki once I am happy with my symbol. _______________________________________________ Therion mailing list [email protected] https://mailman.speleo.sk/listinfo/therion
