X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=gtk2_ardour%2Fdiamond.cc;h=57b86250f9539eddce5fe7ab808c7540bfd20e53;hb=6fbaa5403bcefba3186fb5490017e110210122e3;hp=31761597cdc6029f9a4bb97eee71fd2b0f72a09b;hpb=68653307e666b8daabd2931ce0731d400d947707;p=ardour.git

diff --git a/gtk2_ardour/diamond.cc b/gtk2_ardour/diamond.cc
index 31761597cd..57b86250f9 100644
--- a/gtk2_ardour/diamond.cc
+++ b/gtk2_ardour/diamond.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2007 Paul Davis 
+    Copyright (C) 2007 Paul Davis
     Author: Dave Robillard
 
     This program is free software; you can redistribute it and/or modify
@@ -24,12 +24,62 @@ using namespace Gnome::Art;
 
 Diamond::Diamond(Group& group, double height)
 	: Polygon(group)
+	, _x (0)
+	, _y (0)
+	, _h (height)
 {
-	Points points;
-	points.push_back(Point(0, height*2));
-	points.push_back(Point(height, height));
-	points.push_back(Point(0, 0));
-	points.push_back(Point(-height, height));
-	property_points() = points;
+	points = gnome_canvas_points_new (4);
+	g_object_set (gobj(), "points", points, NULL);
+	move_to (0, 0);
 }
 
+Diamond::~Diamond ()
+{
+	gnome_canvas_points_free (points);
+}
+
+void
+Diamond::set_height (double height)
+{
+	_h = height;
+	move_to (_x, _y);
+}
+
+void
+Diamond::move_to (double x, double y)
+{
+	_x = x;
+	_y = y;
+
+	points->coords[0] = _x;
+	points->coords[1] = _y + (_h * 2.0);
+
+	points->coords[2] = _x + _h;
+	points->coords[3] = _y + _h;
+
+	points->coords[4] = _x;
+	points->coords[5] = _y;
+
+	points->coords[6] = _x - _h;
+	points->coords[7] = _y + _h;
+
+	g_object_set (gobj(), "points", points, NULL);
+}
+
+void
+Diamond::move_by (double dx, double dy)
+{
+	points->coords[0] += dx;
+	points->coords[1] += dy;
+
+	points->coords[2] += dx;
+	points->coords[3] += dy;
+
+	points->coords[4] += dx;
+	points->coords[5] += dy;
+
+	points->coords[6] += dx;
+	points->coords[7] += dy;
+
+	g_object_set (gobj(), "points", points, NULL);
+}