mitchellhansen/Trac3r-python
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Seems to work fine now, added some more sample images

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MitchellHansen
2019-06-04 16:41:58 -07:00
parent aa8a92870c
commit dc85e7a58c
8 changed files with 70 additions and 51 deletions
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25
Svg2GcodeConverter.py
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@@ -19,9 +19,10 @@ def triangulate_lengths(settings, dest_xy):
return left_pulley_length, right_pulley_length
# http://paulbourke.net/geometry/circlesphere/
# https://math.stackexchange.com/questions/187107/calculate-coordinates-of-3rd-point-vertex-of-a-scalene-triangle-if-angles-and
# http://xaktly.com/MathNonRightTrig.html
def untriangulate_lengths(settings, x, y):
result = [0, 0]
r0 = x
r1 = y
@@ -30,6 +31,9 @@ def untriangulate_lengths(settings, x, y):
a = (pow(r0, 2) - pow(r1, 2) + pow(r2, 2)) / (2 * r2)
h = math.sqrt(pow(r0, 2) - pow(a, 2))
a = a + settings.left_pulley_x_offset
h = h - settings.pulley_y_droop
return a, h
@@ -96,8 +100,8 @@ class Svg2GcodeConverter:
max_x_dim = max(bounding_x_max, bounding_x_min)
max_y_dim = max(bounding_y_max, bounding_y_min)
scale_x = self.settings.canvas_x / max_x_dim
scale_y = self.settings.canvas_y / max_y_dim
scale_x = self.settings.canvas_x / max_x_dim
scale_y = self.settings.canvas_y / max_y_dim
scale = min(scale_x, scale_y)
print("Scaling to : {:.5f}\n".format(scale))
@@ -106,8 +110,6 @@ class Svg2GcodeConverter:
gcode = ""
gcode += self.gcode_preamble
current_position = (self.settings.canvas_x/2, self.settings.pulley_y_droop)
# Walk through the paths and create the GCODE
for path in paths:
@@ -155,11 +157,8 @@ class Svg2GcodeConverter:
for i in pos:
evals.append(curve.evaluate(i))
#gcode += "G1 X{:.3f} Y{:.3f}\n".format(start_x, start_y)
lengths = triangulate_lengths(self.settings, (start_x, start_y))
gcode += "; Setting down tip at beginning of line ({}, {})\n".format(start_x, start_y)
# gcode += "; Setting down tip at beginning of line ({}, {})\n".format(start_x, start_y)
gcode += "G1 X{:.3f} Y{:.3f}\n".format(lengths[0], lengths[1])
gcode += "G1 Z{:.3f} \n".format(0)
@@ -167,17 +166,17 @@ class Svg2GcodeConverter:
x = i[0][0]
y = i[1][0]
tmp_len = triangulate_lengths(self.settings, (x * scale, y * scale))
gcode += "; Continuing the line ({}, {})\n".format(x * scale, y * scale)
# gcode += "; Continuing the line ({}, {})\n".format(x * scale, y * scale)
gcode += "G1 X{:.3f} Y{:.3f}\n".format(tmp_len[0], tmp_len[1])
if isinstance(part, Line):
start_len = triangulate_lengths(self.settings, (start_x, start_y))
end_len = triangulate_lengths(self.settings, (end_x, end_y))
gcode += "; Setting down tip at beginning of line ({}, {})\n".format(start_x, start_y)
# gcode += "; Setting down tip at beginning of line ({}, {})\n".format(start_x, start_y)
gcode += "G1 X{:.3f} Y{:.3f}\n".format(start_len[0], start_len[1])
gcode += "G1 Z{:.3f} \n".format(0)
gcode += "; Moving tip to the end of the line ({}, {})\n".format(end_x, end_y)
# gcode += "; Moving tip to the end of the line ({}, {})\n".format(end_x, end_y)
gcode += "G1 X{:.3f} Y{:.3f}\n".format(end_len[0], end_len[1])
gcode += self.gcode_end