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svg magic for outputting only part of the plate

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This commit is contained in:
Simon Pirkelmann 2019-09-12 10:54:10 +02:00
parent 0bf09ea2fa
commit affa70ede6
1 changed files with 54 additions and 9 deletions
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63
prototype/circles.py
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@ -3,6 +3,9 @@ import matplotlib.pyplot as plt
import math
import operator
# scale in inkscape
# 1 unit = 0.283 mm
scale = 1000.0/282.222
def svg_circle(id, name, c, r):
# create circle object in svg notation
@ -16,6 +19,40 @@ def svg_circle(id, name, c, r):
return text
def svg_half_circle(id, name, c, r, angle):
# draws half a circle centered at c with radius r
# angle specifies how the half circle should be rotated
# for the default angle of zero, it draws the top half of the circle
# convert angle to radians
angle = angle/360.0 * 2.0 * np.pi
# compute starting point
v = np.array([np.cos(angle), np.sin(angle)])
begin = c + r * v # in millimeters
begin *= scale # in pixel units
# compute end point
end = c - r * v # in millimeters
end *= scale # in pixel units
radius_scaled = r * scale
text = [' <g id="mygroup">\n '
' <path \n '
' id="path666" \n '
' style="fill:none;stroke:#ff0000;stroke-width:0.60000002" \n'
' d="M {} {} A {} {} {} 1 1 {} {}"'
' />\n'
' <path \n'
' id="path667" \n'
' style="fill:none;stroke:#ff0000;stroke-width:0.60000002"\n '
' d="M 0 0 L 1000 1000"'
' />\n'
' </g>\n'.format(begin[0], begin[1], radius_scaled, radius_scaled, 0, end[0], end[1])]
return text
def svg_rectangle(id, name, c, width, heigth, angle):
x = np.sqrt(c[0]**2 + c[1]**2) - width/2
@ -194,7 +231,7 @@ class PlateLayout:
# compute coordinates and various measurements for fixed radii of plate and tubes
self.target_plate_radius = 160.0
self.target_center_hole_radius = 7.5
self.target_radius_1 = 50.2
self.target_radius_1 = 50.5
self.target_radius_2 = 20.0
teeth = 200
@ -430,20 +467,28 @@ class PlateLayout:
text = svg_circle(0, 'plate', (0,0), self.target_plate_radius)
f_lines = f_lines + text
output_all = False
if output_all:
N = len(self.tube_1_coords.items())
else:
N = 1
# output big circles as svg
for k, c in self.tube_1_coords.items():
text = svg_circle(k, 'big circle', c, self.target_radius_1)
for k, c in self.tube_1_coords.items()[0:N]:
#text = svg_circle(k, 'big circle', c, self.target_radius_1)
angle = self.tube_1_angles[k]
text = svg_half_circle(k, 'big circle', c, self.target_radius_1, angle)
f_lines = f_lines + text
pass
# output small circles as svg
for k, c in self.tube_2_coords.items():
for k, c in self.tube_2_coords.items()[0:N]:
text = svg_circle(k, 'small circle', c, self.target_radius_2)
f_lines = f_lines + text
pass
# gear markings for big cirlces and small circles
for k, c in self.tube_1_tangents.items():
for k, c in self.tube_1_tangents.items()[0:N]:
circle_midpoint = self.tube_1_coords[k]
v = np.array(c[0]) - np.array(circle_midpoint)
v = v/np.linalg.norm(v)
@ -457,7 +502,7 @@ class PlateLayout:
f_lines = f_lines + text
pass
for k, c in self.tube_2_tangents.items():
for k, c in self.tube_2_tangents.items()[0:N]:
circle_midpoint = self.tube_2_coords[k]
v = np.array(c[0]) - np.array(circle_midpoint)
v = v/np.linalg.norm(v)
@ -472,19 +517,19 @@ class PlateLayout:
pass
# output cuts for big circles
for k, c in self.tube_1_cuts.items():
for k, c in self.tube_1_cuts.items()[0:N]:
text = svg_rectangle(k, 'cut', c['center'], c['length'], c['width'], c['angle_deg'])
f_lines = f_lines + text
pass
# output cuts for small circles
for k, c in self.tube_2_cuts.items():
for k, c in self.tube_2_cuts.items()[0:N]:
text = svg_rectangle(k, 'cut', c['center'], c['length'], c['width'], c['angle_deg'])
f_lines = f_lines + text
pass
# lines for manufacturing out of multiple pieces
for k, a in self.tube_1_angles.items():
for k, a in self.tube_1_angles.items()[0:N]:
a = a/360.0 * 2.0 * np.pi
r1 = np.linalg.norm(np.array(self.tube_1_coords[k])) - self.target_radius_1
vunit = np.array([np.cos(a), np.sin(a)])