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## Copyright (C) 2008 James Vasile <james@hackervisions.org>
## This is a freed work; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## any later version.
## This is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
## License for more details. You should have received a copy of the
## GNU General Public License along with the work; if not, write
## to the Free Software Foundation, Inc., 51 Franklin Street, 5th
## Floor, Boston, MA 02110-1301 USA
from brlcad import *
class stepper_motor(Shape):
'''Vertex is center point box, along the center of the cylinder.
TODO: implement mounting holes'''
def __init__(self, vertex, base_height, base_width,
mount_hole_rad,
motor_height, motor_rad,
spindle_height, spindle_rad, **kwargs):
x, y, z = vertex
by = base_height
my = motor_height
bw = float(base_width) / 2
self.vertex = vertex
Shape.__init__(self, [
Comment('Stepper Motor'),
Cylinder((x, y+by, z), (0,motor_height,0), motor_rad),
Cylinder((x, y+by+my, z), (0,spindle_height,0), spindle_rad),
Box_rounded_edge_corners(x-bw,x+bw, y,y+by, z-bw,z+bw, bw/10),
], basename='stepper', suffix='', group=True, **kwargs)
class Threaded_rod():
'''Threaded rod. Horrible detail right now'''
def __init__(self, name, vertex, length_vector, major_diameter, minor_diameter, tpi):
'''If tpi is < 1, it's pitch in whatever the current units is,
otherwise it's teeth per current units'''
## Pitch
if tpi < 1:
pitch = tpi
else:
pitch = 1/tpi
## Major and minor radii
major = float(major_diameter) / 2
minor = float(minor_diameter) / 2
## Mock it up as a cylinder in a cylinder
## Todo: improve mock up to use major diameter disks around a minor diameter core
return Script(
Cylinder('unique_name_token', vertex, length_vector, major),
Cylinder('unique_name_token', vertex, length_vector, minor)
)
class Threaded_hole():
'''Threaded hole. Horrible detail.'''
def __init__(self, name, vertex, length_vector, major_diameter, minor_diameter, tpi):
'''If tpi is < 1, it's pitch in whatever the current units is,
otherwise it's teeth per current units'''
## Pitch
if tpi < 1:
pitch = tpi
else:
pitch = 1/tpi
## Major and minor radii
major = float(major_diameter) / 2
minor = float(minor_diameter) / 2
## Mock it up as a cylinder in a cylinder
## Todo: improve mock up to use major diameter disks around a minor diameter core
return Script(
Cylinder('unique_name_token', vertex, length_vector, major),
Cylinder('unique_name_token', vertex, length_vector, minor)
)
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