X-Git-Url: https://git.gag.com/?p=debian%2Fgnuradio;a=blobdiff_plain;f=gr-wxgui%2Fsrc%2Fpython%2Fplotter%2Fplotter_base.py;fp=gr-wxgui%2Fsrc%2Fpython%2Fplotter%2Fplotter_base.py;h=b856215e9ba458069b72bf8e77a8a8815c6c29f0;hp=dede5a0ad51b8d5abbf231c02ef40634d66acd77;hb=8a9ddbb0675f9bfcc6e03b457fba6c79474a3693;hpb=82d471b9b4a8b389b5da44b19c69c36420828382

diff --git a/gr-wxgui/src/python/plotter/plotter_base.py b/gr-wxgui/src/python/plotter/plotter_base.py
index dede5a0a..b856215e 100644
--- a/gr-wxgui/src/python/plotter/plotter_base.py
+++ b/gr-wxgui/src/python/plotter/plotter_base.py
@@ -1,5 +1,5 @@
 #
-# Copyright 2008, 2009 Free Software Foundation, Inc.
+# Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
 #
 # This file is part of GNU Radio
 #
@@ -87,7 +87,10 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex):
 		@param parent the parent widgit
 		"""
 		attribList = (wx.glcanvas.WX_GL_DOUBLEBUFFER, wx.glcanvas.WX_GL_RGBA)
-		wx.glcanvas.GLCanvas.__init__(self, parent, attribList=attribList)
+		wx.glcanvas.GLCanvas.__init__(self, parent, attribList=attribList);
+                self.use_persistence=False
+                self.persist_alpha=2.0/15
+                self.clear_accum=True
 		self._gl_init_flag = False
 		self._resized_flag = True
 		self._init_fcns = list()
@@ -97,6 +100,13 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex):
 		self.Bind(wx.EVT_SIZE, self._on_size)
 		self.Bind(wx.EVT_ERASE_BACKGROUND, lambda e: None)
 
+        def set_use_persistence(self,enable):
+                self.use_persistence=enable 
+                self.clear_accum=True
+
+        def set_persist_alpha(self,analog_alpha):
+                self.persist_alpha=analog_alpha
+
 	def new_gl_cache(self, draw_fcn, draw_pri=50):
 		"""
 		Create a new gl cache.
@@ -131,6 +141,7 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex):
 		"""
 		self.lock()
 		self._resized_flag = True
+                self.clear_accum=True
 		self.unlock()
 
 	def _on_paint(self, event):
@@ -160,7 +171,30 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex):
 			self._resized_flag = False
 		#clear, draw functions, swap
 		GL.glClear(GL.GL_COLOR_BUFFER_BIT)
+
+                if False:
+                  GL.glEnable (GL.GL_LINE_SMOOTH)
+                  GL.glEnable (GL.GL_POLYGON_SMOOTH)
+                  GL.glEnable (GL.GL_BLEND)
+                  GL.glBlendFunc (GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
+                  GL.glHint (GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST) #GL.GL_DONT_CARE)
+                  GL.glHint(GL.GL_POLYGON_SMOOTH_HINT, GL.GL_NICEST)
+                  #GL.glLineWidth (1.5)
+
+                  GL.glEnable(GL.GL_MULTISAMPLE) #Enable Multisampling anti-aliasing
+
+
 		for fcn in self._draw_fcns: fcn[1]()
+
+                if self.use_persistence:
+                  if self.clear_accum:
+                    #GL.glClear(GL.GL_ACCUM_BUFFER_BIT)
+                    GL.glAccum(GL.GL_LOAD, 1.0)
+                    self.clear_accum=False
+
+                  GL.glAccum(GL.GL_MULT, 1.0-self.persist_alpha)
+                  GL.glAccum(GL.GL_ACCUM, self.persist_alpha)
+                  GL.glAccum(GL.GL_RETURN, 1.0)
 		self.SwapBuffers()
 		self.unlock()