<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=gb2312"> <META content="MSHTML 6.00.6000.16674" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Garamond color=#000080 size=4> <DIV><FONT face=Garamond color=#000080 size=4>Hi, All,</FONT></DIV> <DIV><FONT face=Garamond color=#000080 size=4></FONT> </DIV> <DIV><FONT face=Garamond color=#000080 size=4>I'm startting to use Cairo to draw roads in a city. Each road can be represented as a polyline with multiple points. To draw a simple road, just create a path with these points and then stroke the path. But if I want to draw both directions of a road, how to create two parallel paths according to the polyline? Is there any facility provided in Cairo doing that?</FONT></DIV> <DIV><FONT face=Garamond color=#000080 size=4></FONT> </DIV> <DIV><FONT face=Garamond color=#000080 size=4>Thanks in advance!</FONT></DIV> <DIV><FONT face=Garamond color=#000080 size=4></FONT> </DIV> <DIV><FONT face=Garamond color=#000080 size=4>Regards,</FONT></DIV> <DIV><FONT face=Garamond color=#000080 size=4>Archee</FONT></DIV></FONT></DIV></BODY></HTML>