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else:
return surface
if 'x_center' not in df_shapes or 'y_center' not in df_shapes:
# No center points have been computed for shapes.
return surface
cairo_context = cairo.Context(surface)
df_shapes = df_shapes.copy()
# Scale shapes to leave shape edges uncovered.
df_shapes[['x', 'y']] = (df_shapes[['x_center', 'y_center']] +
df_shapes[['x_center_offset',
'y_center_offset']].values *
shape_scale)
for path_id, df_path_i in (df_shapes.groupby(self.canvas
.shape_i_columns)[['x',
'y']]):
# Use attribute lookup for `x` and `y`, since it is considerably
# faster than `get`-based lookup using columns name strings.
vertices_x = df_path_i.x.values
vertices_y = df_path_i.y.values
cairo_context.move_to(vertices_x[0], vertices_y[0])
for x, y in itertools.izip(vertices_x[1:], vertices_y[1:]):
cairo_context.line_to(x, y)
cairo_context.close_path()
# Draw filled shape to indicate actuated electrode state.
cairo_context.set_source_rgba(*fill)
cairo_context.fill()
return surface"
4314,"def render_shapes(self, df_shapes=None, clip=False):
'''
Render static electrode shapes (independent of actuation state).
If video is enabled, draw white outline for each electrode (no fill).
If video is disabled, draw white outline for each electrode and fill
blue.
See also :meth:`render_electrode_state_shapes()`.
'''
surface = self.get_surface()
if df_shapes is None:
if hasattr(self.canvas, 'df_canvas_shapes'):
df_shapes = self.canvas.df_canvas_shapes
else:
return surface
cairo_context = cairo.Context(surface)
for path_id, df_path_i in (df_shapes
.groupby(self.canvas
.shape_i_columns)[['x', 'y']]):
# Use attribute lookup for `x` and `y`, since it is considerably
# faster than `get`-based lookup using columns name strings.
vertices_x = df_path_i.x.values
vertices_y = df_path_i.y.values
cairo_context.move_to(vertices_x[0], vertices_y[0])
for x, y in itertools.izip(vertices_x[1:], vertices_y[1:]):
cairo_context.line_to(x, y)
cairo_context.close_path()
if self.enabled:
# Video is enabled.
# Draw white border around electrode.
line_width = 1
if path_id not in self.electrode_channels.index:
# on off on off
dashes = [10, 10]
color = (1, 0, 1)
line_width *= 2
else:
dashes = []
color = (1, 1, 1)
cairo_context.set_dash(dashes)
cairo_context.set_line_width(line_width)
cairo_context.set_source_rgb(*color)
cairo_context.stroke()
else:
# Video is enabled. Fill electrode blue.
color = ((0, 0, 1) if path_id in self.electrode_channels.index
else (1, 0, 1))
cairo_context.set_source_rgb(*color)
cairo_context.fill_preserve()
# Draw white border around electrode.
cairo_context.set_line_width(1)
cairo_context.set_source_rgba(1, 1, 1)
cairo_context.stroke()
return surface"
4315,"def render_registration(self):
'''
Render pinned points on video frame as red rectangle.
'''
surface = self.get_surface()
if self.canvas is None or self.df_canvas_corners.shape[0] == 0:
return surface
corners = self.df_canvas_corners.copy()