<html> <head> <style></style> </head> <body class='hmmessage'> Thanks! I decided to draw a circle on the line AB, close to B. That would determine the direction. However, I have problem drawing the circle while drawing the line. Consider the following block from the while loop:         cairo_move_to (cr, *firstIter, *(firstIter+1));         cairo_line_to (cr, *secondIter, *(secondIter+1));         // here I calculate the coordinates of the wished circles...         cairo_stroke(cr); Note that placing cairo_arc(cr, rectOrigin[0], rectOrigin[1], circleRad*0.5, 0, 2*M_PI); instead of comment above leads to unwanted results. What would be the way to draw these circles (given their origins) while drawing lines? Thanks From: jeremy@emperorlinux.com To: cairo@cairographics.org Date: Wed, 24 Nov 2010 23:42:45 -0500 Subject: Re: [cairo] Drawing an arrow <pre>On Tue, 2010-11-23 at 16:27 +0000, necko necko wrote: > A set of 2D coordinates needs be connected by lines, but some of these > lines need be arrows; > meaning, the sequence > > cairo_move_to (cr, A.x, A.y); > cairo_line_to (cr, B.x, B.y); > > that draws a line from A to B, needs to be replaced with an arrow from > A to B. > Any help on how to achieve this is highly welcome. > Thanks It turns out, Behdad has already provided some code that does something very similar to this! I include the code in Cairocks, the function is called "map_path_onto" and I got it from some of his code... somewhere. Please see the attached image for a demonstration. I only use a simple arc as the path, but you could just as well use anything. Weee! :) > -- > cairo mailing list > cairo@cairographics.org > <a href="http://lists.cairographics.org/mailman/listinfo/cairo" target="_blank">http://lists.cairographics.org/mailman/listinfo/cairo</a> </pre> -- cairo mailing list cairo@cairographics.org http://lists.cairographics.org/mailman/listinfo/cairo </body> </html>