SF.net SVN: matplotlib:[6214] trunk/matplotlib

[<md...@us...>]

Revision: 6214
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6214&view=rev
Author:   mdboom
Date:     2008-10-15 19:44:58 +0000 (Wed, 15 Oct 2008)

Log Message:
-----------
Fix bug in clipping in the simplifier

Modified Paths:
--------------
    trunk/matplotlib/src/agg_py_path_iterator.h

Added Paths:
-----------
    trunk/matplotlib/examples/pylab_examples/simplification_clipping_test.py

Added: trunk/matplotlib/examples/pylab_examples/simplification_clipping_test.py
===================================================================
--- trunk/matplotlib/examples/pylab_examples/simplification_clipping_test.py	                        (rev 0)
+++ trunk/matplotlib/examples/pylab_examples/simplification_clipping_test.py	2008-10-15 19:44:58 UTC (rev 6214)
@@ -0,0 +1,11 @@
+from pylab import *
+
+t = arange(0.0, 2.0, 0.01)
+s = sin(2*pi*t)
+plot(t, s, linewidth=1.0)
+
+ylim((-0.20, -0.28))
+
+title('Should see four lines extending from bottom to top')
+grid(True)
+show()

Modified: trunk/matplotlib/src/agg_py_path_iterator.h
===================================================================
--- trunk/matplotlib/src/agg_py_path_iterator.h	2008-10-15 18:48:00 UTC (rev 6213)
+++ trunk/matplotlib/src/agg_py_path_iterator.h	2008-10-15 19:44:58 UTC (rev 6214)
@@ -281,6 +281,10 @@
                  (*y < -1.0 && m_lasty < -1.0) ||
                  (*y > m_height && m_lasty > m_height)))
             {
+                if (!m_clipped)
+                {
+                    queue_push(agg::path_cmd_line_to, m_lastx, m_lasty);
+                }
                 m_lastx = *x;
                 m_lasty = *y;
                 m_clipped = true;
@@ -451,7 +455,7 @@
     bool          m_simplify;
     double        m_width, m_height;
 
-    static const int m_queue_size = 6;
+    static const int m_queue_size = 7;
     int  m_queue_read;
     int  m_queue_write;
     item m_queue[m_queue_size];


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