Telos4/MuesliMix
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finished implementation of segments with cuts at big or small circles

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This commit is contained in:
Simon Pirkelmann 2019-09-15 20:26:41 +02:00
parent 6ac2c864c5
commit e91578347c
2 changed files with 125 additions and 58 deletions
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83
prototype/circles.py
View File

@ -370,8 +370,8 @@ class PlateLayout:
f_lines = f.readlines()
f.close()
circle_found = False
circle_def_start = None
circle_def_end = None
for k in range(len(f_lines)):
current_line = f_lines[k]
@ -388,12 +388,14 @@ class PlateLayout:
f_lines[k] = gear_data[0:index+1] + gear_data[-2:]
# find begin and end of center circle definition
if '<circle' in current_line:
circle_found = True
circle_def_start = k
if circle_def_start is not None and circle_def_end is None and '/>' in current_line:
circle_def_end = k
if circle_found and 'r=' in current_line:
# adjust center hole radius
f_lines[k] = ' r="{}mm"\n'.format(self.target_center_hole_radius)
# remove center circle
del f_lines[circle_def_start:circle_def_end + 1]
# delete last line with </svg> command
f_lines.remove(f_lines[-1])
@ -406,7 +408,7 @@ class PlateLayout:
if output_all:
f_lines = self.output_whole(f_lines)
else:
f_lines = self.output_segment(f_lines, 2)
f_lines = self.output_segment(f_lines, 2, split_at_big_circles=False)
f_lines.append('</svg>\n')
@ -418,9 +420,12 @@ class PlateLayout:
pass
def output_segment(self, f_lines, k):
def output_segment(self, f_lines, k, split_at_big_circles=True):
# k = which segment?
k_next = (k + 1) % self.N
k_next_next = (k + 2) % self.N
if split_at_big_circles:
# center hole
a = self.tube_1_angles[k]
@ -467,7 +472,6 @@ class PlateLayout:
f_lines += svg_segment_border_outer(self.tube_1_angles[k_next], self.target_plate_radius, self.plate_module,
self.tube_1_coords[k_next], self.target_radius_1)
# find outmost points for segment cut lines
# in addition we rotate the points by 0.9 degrees because we also rotated the gear path
# by this amount above
@ -480,6 +484,67 @@ class PlateLayout:
vunit2 = np.array([np.cos(a2), np.sin(a2)])
outer_point_2 = vunit2 * r_pitch_minus_module
else:
# center hole
a = self.tube_2_angles[k]
a = a / 360.0 * 2.0 * np.pi
vunit = np.array([np.cos(a), np.sin(a)])
p1 = vunit * self.target_center_hole_radius
a2 = self.tube_2_angles[k_next]
a2 = a2 / 360.0 * 2.0 * np.pi
vunit2 = np.array([np.cos(a2), np.sin(a2)])
p2 = vunit2 * self.target_center_hole_radius
f_lines += svg_arc(p1, p2, self.target_center_hole_radius, 0, 1)
# small circles arcs
f_lines += svg_half_circle(k, 'small circle', self.tube_2_coords[k], self.target_radius_2,
self.tube_2_angles[k])
f_lines += svg_half_circle(k_next, 'small circle', self.tube_2_coords[k_next], self.target_radius_2,
self.tube_2_angles[k_next], orientation_flag=0)
# big circle
f_lines += svg_circle(k, 'big circle', self.tube_1_coords[k_next], self.target_radius_1)
# gear pos for big circle
f_lines += svg_gear_marking(self.tube_1_tangents[k_next], self.tube_1_coords[k_next])
# cutout rectangle for big circles
f_lines += svg_rectangle(k, 'cut', self.tube_1_cuts[k_next])
f_lines += svg_rectangle(k, 'cut', self.tube_1_cuts[k_next_next])
# gear pos for small circle
f_lines += svg_gear_marking(self.tube_2_tangents[k_next], self.tube_2_coords[k_next])
# cutout rectangle for small circles
f_lines += svg_rectangle(k_next, 'cut', self.tube_2_cuts[k_next])
# first segment border
f_lines += svg_segment_border_inner(self.tube_2_angles[k], self.target_center_hole_radius,
self.tube_2_coords[k], self.target_radius_2, puzzle_scale=0.5, placement=0.25)
f_lines += svg_segment_border_outer(self.tube_2_angles[k], self.target_plate_radius, self.plate_module,
self.tube_2_coords[k], self.target_radius_2)
# second segment border
f_lines += svg_segment_border_inner(self.tube_2_angles[k_next], self.target_center_hole_radius,
self.tube_2_coords[k_next], self.target_radius_2, puzzle_scale=0.5, placement=0.25)
f_lines += svg_segment_border_outer(self.tube_2_angles[k_next], self.target_plate_radius, self.plate_module,
self.tube_2_coords[k_next], self.target_radius_2)
# find outmost points for segment cut lines
# in addition we rotate the points by 0.9 degrees because we also rotated the gear path
# by this amount above
r_pitch_minus_module = self.target_plate_radius - self.plate_module
a1 = (self.tube_2_angles[k] - 0.9) / 360.0 * 2.0 * np.pi
vunit1 = np.array([np.cos(a1), np.sin(a1)])
outer_point_1 = vunit1 * r_pitch_minus_module
a2 = (self.tube_2_angles[k_next] - 0.9) / 360.0 * 2.0 * np.pi
vunit2 = np.array([np.cos(a2), np.sin(a2)])
outer_point_2 = vunit2 * r_pitch_minus_module
# truncate gear path
for j in range(len(f_lines)):
current_line = f_lines[j]

14
prototype/svg_utils.py
View File

@ -63,7 +63,7 @@ def svg_puzzle(p, size, angle):
return text
def svg_line_puzzle(start, end, puzzle_scale=1.0, linewidth=0.50):
def svg_line_puzzle(start, end, puzzle_scale=1.0, linewidth=0.50, placement=0.5):
# draws a line from start to end with a simple jigsaw puzzle style cutout in the middle
# the size of the cutout can be controlled with the puzzle_scale parameter
# compute points
@ -89,7 +89,8 @@ def svg_line_puzzle(start, end, puzzle_scale=1.0, linewidth=0.50):
angle = math.atan2(v[1], v[0]) # angle of v
# midpoint between start and end
p = np.mean([start, end], axis=0)
p = (1.0 - placement) * start + placement * end
#p = np.mean([start, end], axis=0)
v1 = np.array([np.cos(angle), np.sin(angle)])
v2 = np.array([v1[1], -v1[0]])
@ -198,18 +199,19 @@ def svg_gear_marking(tangent_coord, circle_midpoint, marking_length=5.0):
return text
def svg_segment_border_inner(angle, center_hole_radius, circle_pos, circle_radius):
def svg_segment_border_inner(angle, center_hole_radius, circle_pos, circle_radius, puzzle_scale=1.0, placement=0.5):
a = angle
a = a / 360.0 * 2.0 * np.pi
r1 = np.linalg.norm(np.array(circle_pos)) - circle_radius
vunit = np.array([np.cos(a), np.sin(a)])
p1 = vunit * center_hole_radius
p2 = vunit * r1
text = svg_line_puzzle(p1, p2)
text = svg_line_puzzle(p1, p2, puzzle_scale=puzzle_scale, placement=placement)
return text
def svg_segment_border_outer(angle, plate_pitch_radius, plate_gear_module, circle_pos, circle_radius):
def svg_segment_border_outer(angle, plate_pitch_radius, plate_gear_module, circle_pos, circle_radius, puzzle_scale=1.0,
placement=0.5):
a = angle
a = a / 360.0 * 2.0 * np.pi
vunit = np.array([np.cos(a), np.sin(a)])
@ -217,6 +219,6 @@ def svg_segment_border_outer(angle, plate_pitch_radius, plate_gear_module, circl
p3 = vunit * r2
r3 = plate_pitch_radius - plate_gear_module
p4 = vunit * r3
text = svg_line_puzzle(p3, p4)
text = svg_line_puzzle(p3, p4, puzzle_scale=puzzle_scale, placement=placement)
return text