Just a small footnote: so long as the angles of intersection are all right angles, there's no real problem. See the second example at
http://cs.sru.edu/~ddailey/svg/knot2.svg cheers D From: [email protected] [mailto:[email protected]] On Behalf Of David Dailey Sent: Thursday, March 15, 2012 5:45 PM To: [email protected] Subject: [svg-developers] more on knots and traffic jams A while back, some of us had discussions about traffic jams and knots. I had posted something that was sorta cute, Israel Eisenberg and G. Wade Johnson came up with some improvements as I recall. Well here's another version, borrowing some of each: http://cs.sru.edu/~ddailey/svg/knot1.svg The moving vehicle has a mask applied to it that has bridge/tunnels that blink from bridge to tunnel. The problem is the non-rectangular crossing. Is there any way to bevel the end of a stroke? The problem of multiple vehicles having different speeds is still a huge one. I've been thinking that it would be fun to have a construct, sort of like a <diagram> (owing some of its definitional construct to the Venn and Euler diagrams - see http://theory.cs.uvic.ca/~cos/venn/VennEJC.html ) . It would allow the identification of simple overs and unders in a collection of edges of four-regular graphs such that bridge/tunnels as well as up and down path segments could automatically be constructed from paths, and accordingly motivate traffic flow diagrams, Celtic knots, and Borromean rings. Maybe we'll build one. BTW, try making some of the diagrams in the above survey of Venn diagrams. You'll find a good sampling of large realms of 2D content that SVG is quite ill prepared, at present, to handle very well! Along those lines, feComposite and feBlend (with feImage inside) are remarkably ill supported by extant browsers! Try any colors other than the six primaries in the example at http://cs.sru.edu/~ddailey/svg/Vplay1.svg to see bit of what I mean. Cheers David [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ ----- To unsubscribe send a message to: [email protected] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ----Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/svg-developers/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
