Minor debugging, precision, and performance updates

[grits] / src / gis-opengl.c

diff --git a/src/gis-opengl.c b/src/gis-opengl.c
index 49fd84af54087c9af9aefcbf84b4ea13f4aa1c4d..b07820612d1d6f7b25d53b2e7ee8d7278a0f74e9 100644 (file)
--- a/src/gis-opengl.c
+++ b/src/gis-opengl.c
@@ -523,9 +523,12 @@ static void gis_opengl_set_height_func(GisViewer *_self, GisTile *tile,
                RoamTriangle *tri = cur->data;
                RoamPoint *points[] = {tri->p.l, tri->p.m, tri->p.r, tri->split};
                for (int i = 0; i < G_N_ELEMENTS(points); i++) {
-                       points[i]->height_func = height_func;
-                       points[i]->height_data = user_data;
-                       roam_point_update_height(points[i]);
+                       if (tile->edge.n >= points[i]->lat && points[i]->lat >= tile->edge.s &&
+                           tile->edge.e >= points[i]->lon && points[i]->lon >= tile->edge.w) {
+                               points[i]->height_func = height_func;
+                               points[i]->height_data = user_data;
+                               roam_point_update_height(points[i]);
+                       }
                }
        }
        g_list_free(triangles);