diff options
Diffstat (limited to 'gr-wxgui/src/python/plotter/plotter_base.py')
| -rw-r--r-- | gr-wxgui/src/python/plotter/plotter_base.py | 66 |
1 files changed, 32 insertions, 34 deletions
diff --git a/gr-wxgui/src/python/plotter/plotter_base.py b/gr-wxgui/src/python/plotter/plotter_base.py index 2fdd0f20ab..25811f09b2 100644 --- a/gr-wxgui/src/python/plotter/plotter_base.py +++ b/gr-wxgui/src/python/plotter/plotter_base.py @@ -88,9 +88,9 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex): """ attribList = (wx.glcanvas.WX_GL_DOUBLEBUFFER, wx.glcanvas.WX_GL_RGBA) wx.glcanvas.GLCanvas.__init__(self, parent, attribList=attribList); - self.use_persistence=False - self.persist_alpha=2.0/15 - self.clear_accum=True + 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() @@ -100,12 +100,12 @@ 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_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 set_persist_alpha(self,analog_alpha): + self.persist_alpha=analog_alpha def new_gl_cache(self, draw_fcn, draw_pri=50): """ @@ -141,7 +141,7 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex): """ self.lock() self._resized_flag = True - self.clear_accum=True + self.clear_accum=True self.unlock() def _on_paint(self, event): @@ -153,12 +153,14 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex): """ self.lock() self.SetCurrent() - #check if gl was initialized + + # check if gl was initialized if not self._gl_init_flag: GL.glClearColor(*BACKGROUND_COLOR_SPEC) for fcn in self._init_fcns: fcn() self._gl_init_flag = True - #check for a change in window size + + # check for a change in window size if self._resized_flag: self.width, self.height = self.GetSize() GL.glMatrixMode(GL.GL_PROJECTION) @@ -169,35 +171,31 @@ class plotter_base(wx.glcanvas.GLCanvas, common.mutex): GL.glViewport(0, 0, self.width, self.height) for cache in self._gl_caches: cache.changed(True) 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) + # clear buffer if needed + if self.clear_accum or not self.use_persistence: + GL.glClear(GL.GL_COLOR_BUFFER_BIT) + self.clear_accum=False + + # apply fading + if self.use_persistence: + GL.glEnable(GL.GL_BLEND) + GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA) - GL.glEnable(GL.GL_MULTISAMPLE) #Enable Multisampling anti-aliasing + GL.glBegin(GL.GL_QUADS) + GL.glColor4f(1,1,1,self.persist_alpha) + GL.glVertex2f(0, self.height) + GL.glVertex2f(self.width, self.height) + GL.glVertex2f(self.width, 0) + GL.glVertex2f(0, 0) + GL.glEnd() + GL.glDisable(GL.GL_BLEND) + # draw functions for fcn in self._draw_fcns: fcn[1]() - if self.use_persistence: - if self.clear_accum: - #GL.glClear(GL.GL_ACCUM_BUFFER_BIT) - try: - GL.glAccum(GL.GL_LOAD, 1.0) - except: - pass - 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) + # show result self.SwapBuffers() self.unlock() |