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changeset 18295:2ed9498e4a74

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Change diagonal of FaceColor interpolation for patch objects to match Matlab. * gl-render.cc (draw_patch): Reverse order of vertices passed to OpenGL for FaceColor tesselator.
author Rik <rik@octave.org>
date Thu, 16 Jan 2014 21:44:07 -0800
parents 4718af222d9d
children c8d6ca222bcc
files libinterp/corefcn/gl-render.cc
diffstat 1 files changed, 8 insertions(+), 8 deletions(-) [+]
line wrap: on
line diff
--- a/libinterp/corefcn/gl-render.cc	Thu Jan 16 17:54:59 2014 +0000
+++ b/libinterp/corefcn/gl-render.cc	Thu Jan 16 21:44:07 2014 -0800
@@ -2337,6 +2337,14 @@
               tess.begin_polygon (true);
               tess.begin_contour ();
 
+              // Add vertices in reverse order for Matlab compatibility
+              for (int j = count_f(i)-1; j > 0; j--)
+                {
+                  vertex_data::vertex_data_rep *vv = vdata[i+j*fr].get_rep ();
+
+                  tess.add_vertex (vv->coords.fortran_vec (), vv);
+                }
+
               if (count_f(i) > 0)
                 {
                   vertex_data::vertex_data_rep *vv = vdata[i].get_rep ();
@@ -2367,14 +2375,6 @@
                   tess.add_vertex (vv->coords.fortran_vec (), vv);
                 }
 
-              // Add remaining vertices.
-              for (int j = 1; j < count_f(i); j++)
-                {
-                  vertex_data::vertex_data_rep *vv = vdata[i+j*fr].get_rep ();
-
-                  tess.add_vertex (vv->coords.fortran_vec (), vv);
-                }
-
               tess.end_contour ();
               tess.end_polygon ();
             }