# HG changeset patch
# User Pantxo Diribarne <pantxo.diribarne@gmail.com>
# Date 1443257048 -7200
# Node ID 7395fdd45d5f70d5afdb15370ada162cf2cb20ce
# Parent  63d14a5700396edc3da1b6437196a4a86e56666a
Fix selection of one pixel high(wide) images (bug #46049)

* gl-select.cc (opengl_selector::draw_image): make pixel size default to 1 when the corresponding image dimension is 1.

diff -r 63d14a570039 -r 7395fdd45d5f libgui/graphics/gl-select.cc
--- a/libgui/graphics/gl-select.cc	Sat Sep 26 11:42:19 2015 +0200
+++ b/libgui/graphics/gl-select.cc	Sat Sep 26 10:44:08 2015 +0200
@@ -207,11 +207,11 @@
 {
   Matrix xd = props.get_xdata ().matrix_value ();
   octave_idx_type nc = props.get_cdata ().columns ();
-  double x_pix_size = (xd(1) - xd(0)) / (nc - 1);
+  double x_pix_size = (nc == 1 ? 1 : (xd(1) - xd(0)) / (nc - 1));
 
   Matrix yd = props.get_ydata ().matrix_value ();
   octave_idx_type nr = props.get_cdata ().rows ();
-  double y_pix_size = (yd(1) - yd(0)) / (nr - 1);
+  double y_pix_size = (nr == 1 ? 1 : (yd(1) - yd(0)) / (nr - 1));
 
   ColumnVector p1(3, 0.0), p2(3, 0.0), p3(3, 0.0), p4(3, 0.0);
   p1(0) = xd(0) - x_pix_size/2;