def render_scale_diagram(self, render=None, px_per_mm=2):
fork_path = self._fork_path()
if render is None:
inf = array([self.left_cs.tube_top[0], 0])
sup = array([fork_path[-1][0], self.head_tube.tube_top[1]])
r = Render(inf, sup, px_per_mm)
else:
r = render
for tube in (self.seat_tube, self.top_tube, self.head_tube,
self.down_tube):
r.draw_tube(tube)
for mitre in (self.tt_ht, self.dt_ht, self.dt_st, self.tt_st):
r.draw_mitre(mitre)
# Draw the lower stack
path = self._lower_stack_path()
r.polyline(self._lower_stack_path(), "black")
# The fork
r.polyline(fork_path, "darkblue")
# And the centreline
start = array([self.right_drop.end[0], self.bb_drop])
end = array([fork_path[-1][0], self.bb_drop])
r.polyline((start, end), "black")
# The chainstays
r.draw_tube(self.right_cs)
r.draw_tube(self.right_ss)
# The CS dropout
do_top = self.right_drop.end + \
self.right_ss.vecn * self.right_drop.ss_length
r.polyline((self.right_drop.start, self.right_drop.end, do_top),
"purple")
# The wheels
r.draw_wheel(self.right_cs.top + self.right_drop.vec,
self.wheel_diameter, self.tyre_height)
r.draw_wheel(fork_path[1], self.wheel_diameter, self.tyre_height)
# And finally the BB shell
r.circle(array([0, 0]), self.bb_tube.radius, "brown")
r.draw_point(self.dt_bb_mitre_corner[INSIDE], "red")
r.draw_point(self.dt_bb_mitre_corner[OUTSIDE], "cyan")
return r
def render_scale_diagram(self, px_per_mm=2):
f = self.frame
left_cs = f.left_cs.transform(self.projection)
right_cs = f.right_cs.transform(self.projection)
bb = f.bb_tube.transform(self.projection)
inf = left_cs.top
sup = bb.top
r = Render(inf, sup, px_per_mm)
r.draw_tube(bb)
r.draw_tube(left_cs)
r.draw_tube(right_cs)
self._draw_tyre(r)
self._draw_dropouts(r)
self._draw_chainrings(r)
r.draw_mitre(self.cs_bb)
return r
