[gtk/matthiasc/lottie2: 24/24] Show offset in the interactive test

[Matthias Clasen <matthiasc src gnome org>]

commit b0c596ea750626a2ce0a3f6839958918f4211686
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Nov 26 02:26:20 2020 -0500

    Show offset in the interactive test

 tests/curve2.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/tests/curve2.c b/tests/curve2.c
index 2203def4a2..d05863d147 100644
--- a/tests/curve2.c
+++ b/tests/curve2.c
@@ -11,6 +11,7 @@ struct _DemoWidget
   GskPathMeasure *measure;
   double x, y;
   graphene_point_t point;
+  graphene_point_t point2;
   graphene_vec2_t tangent;
   double start, end;
 
@@ -34,6 +35,7 @@ motion (GtkEventControllerMotion *controller,
 {
   float distance;
   char *text;
+  float t;
 
   if (!self->track)
     return;
@@ -45,9 +47,11 @@ motion (GtkEventControllerMotion *controller,
                                            FLT_MAX,
                                            &distance,
                                            &self->point,
-                                           NULL,
+                                           &t,
                                            &self->tangent);
 
+  gsk_path_measure_get_point (self->measure, t, &self->point2, NULL);
+
   text = g_strdup_printf ("%.1f", distance);
   gtk_label_set_label (GTK_LABEL (self->label), text);
 
@@ -155,6 +159,7 @@ demo_widget_snapshot (GtkWidget   *widget,
 
       gsk_path_builder_add_circle (builder, &self->point, 5);
       gsk_path_builder_add_circle (builder, &p, 2.5);
+      gsk_path_builder_add_circle (builder, &self->point2, 5);
 
       path = gsk_path_builder_free_to_path (builder);