def draw(self):
# Adjust for margin
gl.glTranslatef(self.cfg.window_margin_x, self.cfg.window_margin_y, 0.0)
# Adjust for axis bar
gl.glTranslatef((20.0 if self.cfg.show_axis else 0), (20.0 if self.cfg.show_axis else 0), 0.0)
# Adjust for status bar
gl.glTranslatef(0.0, (self.cfg.status_height if self.cfg.show_status_bar else 0), 0.0)
# Draw base plane
self._draw_background()
# Adjust for view
gl.glTranslatef(self.live_tx, self.live_ty, self.live_tz)
# Scale to fit window
gl.glScalef(*self.cfg._update_scaling())
# Compute centre point
cx = float((self.cfg.plot_width / 2.0) - (self.live_tx / self.cfg.scale_x))
cy = float((self.cfg.plot_height / 2.0) - (self.live_ty / self.cfg.scale_y))
#cz = float(glCfg.plot_depth / 2.0)
# Scale according to zoom factors about centre point
gl.glTranslatef(cx, cy, 0.0)
gl.glScalef(self.live_zoom_x, self.live_zoom_y, self.live_zoom_z)
gl.glTranslatef(-cx, -cy, 0.0)
# Rotate about X axis
#glRotatef(-90.0, 10.0, 0.0, 0.0)
# Draw axis
if self.cfg.show_axis:
self._draw_axis()
# Draw plot elements as lines
self._draw_plot()
if self.cfg.show_marker:
self._draw_marker()
if self.cfg.show_status_bar:
self._draw_status_bar()
def _draw_background(self):
gl.glPushMatrix()
# Scale to fit window
gl.glScalef(*self.cfg._update_scaling())
width = int(self.cfg.plot_width)
height = int(self.cfg.plot_height)
depth = -1
log.debug('Drawing background; width=%d, height=%d, depth=%d', width, height, depth)
gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL)
gl.glColor4f(*self.cfg.bg_colour_4f)
gl.glBegin(gl.GL_QUADS)
gl.glVertex3i(0, 0, depth)
gl.glVertex3i(0, height, depth)
gl.glVertex3i(width, height, depth)
gl.glVertex3i(width, 0, depth)
gl.glEnd()
gl.glPopMatrix()