def _draw(self):
# Update ticks prior to drawing if required
if self._ticks_need_updating:
self._update_xticks()
self._update_yticks()
self._ticks_need_updating = False
# Prepare for plotting
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glLoadMatrixd(self._gl_mview_xylims)
# Clip everything in the pane
gl.glScissor(*self._gl_scissor_xylims)
gl.glEnable(gl.GL_SCISSOR_TEST)
# Clear region defined by scissor-clipping
gl.glClearColor(*self._bgcolour)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
for line in self.lines:
line.draw()
# Unclip to draw borders (all settings should be restored)
gl.glDisable(gl.GL_SCISSOR_TEST)
# Draw border in figure space (line never needs updating)
gl.glLoadMatrixd(self._figure._gl_mview_xylims)
self._edge_line.draw()
# Draw tick text in pixel space
gl.glPopMatrix()
for t in self._gl_xticks.values() + self._gl_yticks.values():
t['glt'].draw()
def _DrawGL(self):
"""
Default _DrawGL. This should be overridden by subclasses of GLPanel
This function should not be called explicitly.
To initiate a redraw call Repaint().
"""
gl.glClearColor(0,0,0,0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
def _draw(self):
"""Draw the OpenGL scene (only called by event handlers)"""
## Clear figure area
gl.glClearColor(*self._bgcolour)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
## Delegate drawing to the axes
for ax in self._axes:
ax._draw()
## Clear draw flag, until changed again
self._needs_draw = False