def _draw_powerline_arrow(self, pos_or_x, pos_or_y, pos_ex_x, pos_ex_y,
watts_value, line_name, line_color):
cx, cy = pltu.middle_from_points(pos_or_x, pos_or_y, pos_ex_x,
pos_ex_y)
dx, dy = pltu.norm_from_points(pos_or_x, pos_or_y, pos_ex_x, pos_ex_y)
sym = self._plotly_tri_from_line_dir_and_sign(dx, dy, watts_value)
marker_dict = dict(size=self._line_arrow_radius,
color=line_color,
showscale=False,
symbol=sym)
sub_offx = dx * self._sub_radius
sub_offy = dy * self._sub_radius
or_offx = dx * self._line_arrow_len
or_offy = dy * self._line_arrow_len
arrx_or = pos_or_x + sub_offx + or_offx
arrx_ex = pos_or_x + sub_offx
arry_or = pos_or_y + sub_offy + or_offy
arry_ex = pos_or_y + sub_offy
trace_name = self._line_prefix + self._arrow_prefix + line_name
return go.Scatter(x=[arrx_or, arrx_ex],
y=[arry_or, arry_ex],
hoverinfo='skip',
showlegend=False,
marker=marker_dict,
name=trace_name)
def _draw_powerline_txt(self, pos_or_x, pos_or_y, pos_ex_x, pos_ex_y,
text):
pos_x, pos_y = pltu.middle_from_points(pos_or_x, pos_or_y, pos_ex_x,
pos_ex_y)
off_x, off_y = pltu.orth_norm_from_points(pos_or_x, pos_or_y, pos_ex_x,
pos_ex_y)
txt_x = pos_x + off_x * (self._load_radius / 2)
txt_y = pos_y + off_y * (self._load_radius / 2)
ha = self._h_textpos_from_dir(off_x, off_y)
va = self._v_textpos_from_dir(off_x, off_y)
self.ax.text(txt_x,
txt_y,
text,
color=self._gen_txt_color,
fontsize='small',
horizontalalignment=ha,
verticalalignment=va)
