Hi All I have just been dealing with a bug where I was drawing a contour plot and my entire plot was being filled with one contour level. I have fought my way through the code and it turned out to be a perfect storm of a bug which begins with the notcrossed function returning a PL_NEAR_PARALLEL status for two lines which are actually near perpendicular (and cross) which then causes the top left corner of my plot to be incorrectly labelled as inside a fill region. However because the fill region is actually outside the plot plplot sees no intersections with the plot boundaries so checks if the top left corner of the plot is inside the fill region. In this case it sees that it is flagged as inside so assumes the whole plot must be inside and fills the whole plot.
I have fixed my code, but I actually don't understand the exixting logic inside notcrossed(). This might be because it is an error or it might be because I just don't get it. So before I push my change I just wanted to check if whoever authored this function is still around? Phil ------------------------------------------------------------------------------ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
