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 _resize(self, width, height):
"""Resize the OpenGL scene (only called by event handlers)"""
gl.glViewport(0, 0, width, height)
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glLoadIdentity()
width = width or 1
height = height or 1
gl.glOrtho(0, width, 0, height, -1, 1)
gl.glMatrixMode(gl.GL_MODELVIEW)
self.set_rect([0, 0, width, height])
def _ResizeGL(self, width, height):
"""
Default _ResizeGL. This should be overridden by subclasses of GLPanel
This function should not be called directly.
To inform the GLPanel that it needs to resize call __OnSize().
"""
gl.glViewport(0, 0, width, height)
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glLoadIdentity()
gl.glOrtho(-1,1,-1,1,-1,1)
gl.glMatrixMode(gl.GL_MODELVIEW)
def _draw(self):
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPushMatrix()
gl.glMultMatrixd(self._gl_mview_offset_scale)
super(GLLineOffsetScale, self)._draw()
gl.glPopMatrix()