Fix a drawing error in contour plots. [#458]

GNOME · Jan 11, 2020 · 3d376f3 · 3d376f3
1 parent 05fdede
commit 3d376f3
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,8 @@
+2020-01-11  Jean Brefort  <jean.brefort@normalesup.org>
+
+	* plugins/plot_surface/gog-contour.c (gog_contour_view_render): fix a
+	drawing error in contour plots. Fix #458
+
 2019-12-13  Jean Brefort  <jean.brefort@normalesup.org>
 
 	* goffice/graph/gog-series-labels.c (gog_series_labels_update):

diff --git a/NEWS b/NEWS
@@ -3,6 +3,7 @@ goffice 0.10.47:
 Jean:
 	* Fix crash if a XY plot series has data labels but no valid data. [#426]
 	* Fix criticals related to data labels. [#428]
+	* Fix a drawing error in contour plots. [#458]
 
 Morten:
 	* Fix library namespace issue.

diff --git a/plugins/plot_surface/gog-contour.c b/plugins/plot_surface/gog-contour.c
@@ -918,7 +918,11 @@ gog_contour_view_render (GogView *view, GogViewAllocation const *bbox)
 						}
 					} else {
 						k = 0;
-						for (s = 0; s < 8; s++) {
+						if (xl[0] < 0)
+							go_path_move_to (path, x[0], y[0]);
+						else
+							go_path_move_to (path, xl[0], yl[0]);
+						for (s = 1; s < 8; s++) {
 							if (xl[s] < 0.) {
 								if (s == 7)
 									break;