[goffice] Pie: reduce angle mod 360.

[Morten Welinder <mortenw src gnome org>]

commit 155e9f438f7c3fe2dab9e2d25b16a96bef9d1587
Author: Morten Welinder <terra gnome org>
Date:   Mon Apr 13 20:24:58 2015 -0400

    Pie: reduce angle mod 360.

 plugins/plot_pie/gog-pie.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/plugins/plot_pie/gog-pie.c b/plugins/plot_pie/gog-pie.c
index 80e4f7c..81f54fc 100644
--- a/plugins/plot_pie/gog-pie.c
+++ b/plugins/plot_pie/gog-pie.c
@@ -194,9 +194,13 @@ gog_pie_plot_set_property (GObject *obj, guint param_id,
        GogPiePlot *pie = GOG_PIE_PLOT (obj);
 
        switch (param_id) {
-       case PLOT_PROP_INITIAL_ANGLE:
-               pie->initial_angle = g_value_get_double (value);
+       case PLOT_PROP_INITIAL_ANGLE: {
+               double a = g_value_get_double (value);
+               a = fmod (a, 360);
+               if (a < 0) a += 360;
+               pie->initial_angle = a;
                break;
+       }
        case PLOT_PROP_DEFAULT_SEPARATION: {
                double f = g_value_get_double (value);
                pie->default_separation = CLAMP (f, 0., 5.);
@@ -306,7 +310,7 @@ gog_pie_plot_class_init (GogPlotClass *plot_klass)
                g_param_spec_double ("initial-angle",
                        _("Initial angle"),
                        _("Degrees clockwise from 12 O'Clock."),
-                       0, G_MAXFLOAT, 0.,
+                       -G_MAXFLOAT, G_MAXFLOAT, 0.,
                        GSF_PARAM_STATIC | G_PARAM_READWRITE | GO_PARAM_PERSISTENT));
        g_object_class_install_property (gobject_klass, PLOT_PROP_DEFAULT_SEPARATION,
                g_param_spec_double ("default-separation",