[Plplot-devel] bug fix in plot3d

[Gary B. <gb...@cs...>]

Plot3d had a bug in its handling of an end condition. The problem was 
actually in plnxtvhi_draw and only happened when the view parameters 
were just right. I discovered it by spinning plots around. You can see 
what I changed in the CVS diff. It used to say

		} else if (j >= n) {
		    su1 = u[n - 1];
		    sv1 = v[n - 1];
		    su2 = u[n];
		    sv2 = -1;

which  got garbage past the end of the u vector. Now it says


		} else if (j >= n) {
		    su1 = u[n - 1];
		    sv1 = v[n - 1];
		    su2 = u[n - 1];
		    sv2 = -1;

gb