471 lines
24 KiB
Python
471 lines
24 KiB
Python
#!/usr/bin/env python3
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'''
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Copyright (C)2011 Mark Schafer <neon.mark(a)gmaildotcom>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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'''
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# Build a tabbed box for lasercutting with tight fit, and minimal material use options.
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# User defines:
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# - internal or external dimensions,
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# - number of tabs,
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# - amount lost to laser (kerf),
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# - include corner cubes or not,
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# - dimples, or perfect fit (accounting for kerf).
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# If zero kerf - will be perfectly packed for minimal laser cuts and material size.
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### Todo
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# add option to pack multiple boxes (if zero kerf) - new tab maybe?
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# add option for little circles at sharp corners for acrylic
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# annotations: - add overlap value as markup - Ponoko annotation color
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# choose colours from a dictionary
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### Versions
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# 0.1 February 2011 - basic lasercut box with dimples etc
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# 0.2 changes to unittouu for Inkscape 0.91
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# 0.3 Option to avoid half-sized tabs at corners. <juergen@fabmail.org>
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__version__ = "0.3"
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import inkex
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from inkex.paths import Path
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from lxml import etree
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class LasercutBox(inkex.Effect):
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def __init__(self):
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super().__init__()
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self.arg_parser.add_argument("-i", "--int_ext", type = inkex.Boolean, default=False, help="Are the Dimensions for External or Internal sizing.")
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self.arg_parser.add_argument("-x", "--width", type=float, default=50.0, help="The Box Width - in the X dimension")
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self.arg_parser.add_argument("-y", "--height", type=float, default=30.0, help="The Box Height - in the Y dimension")
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self.arg_parser.add_argument("-z", "--depth", type=float, default=15.0, help="The Box Depth - in the Z dimension")
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self.arg_parser.add_argument("-t", "--thickness", type=float, default=3.0, help="Material Thickness - critical to know")
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self.arg_parser.add_argument("-u", "--units", default="cm", help="The unit of the box dimensions")
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self.arg_parser.add_argument("-c", "--corners", type = inkex.Boolean, default=True, help="The corner cubes can be removed for a different look")
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self.arg_parser.add_argument("-H", "--halftabs", type = inkex.Boolean, default=True, help="Start/End with half-sized tabs - Avoid with very small tabs")
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self.arg_parser.add_argument("-p", "--ntab_W", type=int, default=11, help="Number of tabs in Width")
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self.arg_parser.add_argument("-q", "--ntab_H", type=int, default=11, help="Number of tabs in Height")
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self.arg_parser.add_argument("-r", "--ntab_D", type=int, default=6, help="Number of tabs in Depth")
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self.arg_parser.add_argument("-k", "--kerf_size", type=float,default=0.0, help="Kerf size - amount lost to laser for this material. 0 = loose fit")
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self.arg_parser.add_argument("-d", "--dimples", type=inkex.Boolean, default=False, help="Add dimples for press fitting wooden materials")
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self.arg_parser.add_argument("-s", "--dstyle", type=inkex.Boolean, default=False, help="Dimples can be triangles(cheaper) or half rounds(better)")
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self.arg_parser.add_argument("-g", "--linewidth", type=inkex.Boolean, default=False, help="Use the kerf value as the drawn line width")
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self.arg_parser.add_argument("-j", "--annotation", type=inkex.Boolean, default=True, help="Show Kerf value as annotation")
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#dummy for the doc tab - which is named
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self.arg_parser.add_argument("--tab", default="use", help="The selected UI-tab when OK was pressed")
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#internal useful variables
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self.stroke_width = 0.1 #default for visiblity
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self.line_style = {'stroke': '#0000FF', # Ponoko blue
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'fill': 'none',
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'stroke-width': self.stroke_width,
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'stroke-linecap': 'butt',
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'stroke-linejoin': 'miter'}
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def annotation(self, x, y, text):
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""" Draw text at this location
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- change to path
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- use annotation color """
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pass
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def thickness_line(self, dimple, vert_horiz, pos_neg):
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""" called to draw dimples (also draws simple lines if no dimple)
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- pos_neg is 1, -1 for direction
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- vert_horiz is v or h """
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if dimple and self.kerf > 0.0: # we need a dimple
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# size is radius = kerf
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# short line, half circle, short line
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#[ 'C', [x1,y1, x2,y2, x,y] ] x1 is first handle, x2 is second
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lines = []
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radius = self.kerf
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if self.thick - 2 * radius < 0.2: # correct for large dimples(kerf) on small thicknesses
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radius = (self.thick - 0.2) / 2
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short = 0.1
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else:
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short = self.thick/2 - radius
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if vert_horiz == 'v': # vertical line
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# first short line
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lines.append(['v', [pos_neg*short]])
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# half circle
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if pos_neg == 1: # only the DH_sides need reversed tabs to interlock
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if self.dimple_tri:
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lines.append(['l', [radius, pos_neg*radius]])
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lines.append(['l', [-radius, pos_neg*radius]])
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else:
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lines.append(['c', [radius, 0, radius, pos_neg*2*radius, 0, pos_neg*2*radius]])
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else:
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if self.dimple_tri:
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lines.append(['l', [-radius, pos_neg*radius]])
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lines.append(['l', [radius, pos_neg*radius]])
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else:
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lines.append(['c', [-radius, 0, -radius, pos_neg*2*radius, 0, pos_neg*2*radius]])
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# last short line
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lines.append(['v', [pos_neg*short]])
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else: # horizontal line
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# first short line
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lines.append(['h', [pos_neg*short]])
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# half circle
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if self.dimple_tri:
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lines.append(['l', [pos_neg*radius, radius]])
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lines.append(['l', [pos_neg*radius, -radius]])
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else:
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lines.append(['c', [0, radius, pos_neg*2*radius, radius, pos_neg*2*radius, 0]])
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# last short line
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lines.append(['h', [pos_neg*short]])
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return lines
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# No dimple - so much easier
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else: # return a straight v or h line same as thickness
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if vert_horiz == 'v':
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return [ ['v', [pos_neg*self.thick]] ]
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else:
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return [ ['h', [pos_neg*self.thick]] ]
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def draw_WH_lid(self, startx, starty, masktop=False):
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""" Return an SVG path for the top or bottom of box
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- the Width * Height dimension """
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line_path = []
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line_path.append(['M', [startx, starty]])
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# top row of tabs
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if masktop and self.kerf ==0.0: # don't draw top for packing with no extra cuts
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line_path.append(['m', [self.boxW, 0]])
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else:
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if not self.ht: line_path.append(['l', [self.boxW/self.Wtabs/4 - self.pf/2, 0]])
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for i in range(int(self.Wtabs)):
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line_path.append(['h', [self.boxW/self.Wtabs/4 - self.pf/2]])
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#line_path.append(['v', [0, -thick]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'v', -1):
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line_path.append(l)
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line_path.append(['h', [self.boxW/self.Wtabs/2 + self.pf]])
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line_path.append(['v', [self.thick]])
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line_path.append(['h', [self.boxW/self.Wtabs/4 - self.pf/2]])
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if not self.ht: line_path.append(['l', [self.boxW/self.Wtabs/4 - self.pf/2, 0]])
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# right hand vertical drop
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if not self.ht: line_path.append(['l', [0, self.boxH/self.Htabs/4 - self.pf/2]])
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for i in range(int(self.Htabs)):
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line_path.append(['v', [self.boxH/self.Htabs/4 - self.pf/2]])
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line_path.append(['h', [self.thick]])
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line_path.append(['v', [self.boxH/self.Htabs/2 + self.pf]])
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#line_path.append(['h', [-thick, 0]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'h', -1):
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line_path.append(l)
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line_path.append(['v', [self.boxH/self.Htabs/4 - self.pf/2]])
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if not self.ht: line_path.append(['l', [0, self.boxH/self.Htabs/4 - self.pf/2]])
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# bottom row (in reverse)
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if not self.ht: line_path.append(['l', [-self.boxW/self.Wtabs/4 + self.pf/2, 0]])
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for i in range(int(self.Wtabs)):
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line_path.append(['h', [-self.boxW/self.Wtabs/4 + self.pf/2]])
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line_path.append(['v', [self.thick]])
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line_path.append(['h', [-self.boxW/self.Wtabs/2 - self.pf]])
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#line_path.append(['v', [0, -thick]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'v', -1):
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line_path.append(l)
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line_path.append(['h', [-self.boxW/self.Wtabs/4 + self.pf/2]])
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if not self.ht: line_path.append(['l', [-self.boxW/self.Wtabs/4 + self.pf/2, 0]])
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# up the left hand side
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if not self.ht: line_path.append(['l', [0, -self.boxH/self.Htabs/4 + self.pf/2]])
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for i in range(int(self.Htabs)):
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line_path.append(['v', [-self.boxH/self.Htabs/4 + self.pf/2]])
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#line_path.append(['h', [-thick, 0]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'h', -1):
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line_path.append(l)
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line_path.append(['v', [-self.boxH/self.Htabs/2 - self.pf]])
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line_path.append(['h', [self.thick]])
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line_path.append(['v', [-self.boxH/self.Htabs/4 + self.pf/2]])
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if not self.ht: line_path.append(['l', [0, -self.boxH/self.Htabs/4 + self.pf/2]])
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return line_path
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def draw_WD_side(self, startx, starty, mask=False, corners=True):
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""" Return an SVG path for the long side of box
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- the Width * Depth dimension """
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# Draw side of the box (placed below the lid)
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line_path = []
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# top row of tabs
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if corners:
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line_path.append(['M', [startx - self.thick, starty]])
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line_path.append(['v', [-self.thick]])
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line_path.append(['h', [self.thick]])
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else:
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line_path.append(['M', [startx, starty]])
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line_path.append(['v', [-self.thick]])
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#
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if self.kerf > 0.0: # if fit perfectly - don't draw double line
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if not self.ht: line_path.append(['l', [self.boxW/self.Wtabs/4 + self.pf/2, 0]])
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for i in range(int(self.Wtabs)):
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line_path.append(['h', [self.boxW/self.Wtabs/4 + self.pf/2]])
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line_path.append(['v', [self.thick]])
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line_path.append(['h', [self.boxW/self.Wtabs/2 - self.pf]])
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#line_path.append(['v', [0, -thick]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'v', -1):
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line_path.append(l)
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line_path.append(['h', [self.boxW/self.Wtabs/4 + self.pf/2]])
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if not self.ht: line_path.append(['l', [self.boxW/self.Wtabs/4 + self.pf/2, 0]])
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if corners: line_path.append(['h', [self.thick]])
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else: # move to skipped drawn lines
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if corners:
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line_path.append(['m', [self.boxW + self.thick, 0]])
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else:
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line_path.append(['m', [self.boxW, 0]])
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#
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line_path.append(['v', [self.thick]])
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if not corners: line_path.append(['h', [self.thick]])
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# RHS
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if not self.ht: line_path.append(['l', [0, self.boxD/self.Dtabs/4 + self.pf/2]])
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for i in range(int(self.Dtabs)):
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line_path.append(['v', [self.boxD/self.Dtabs/4 + self.pf/2]])
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#line_path.append(['h', [-thick, 0]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'h', -1):
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line_path.append(l)
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line_path.append(['v', [self.boxD/self.Dtabs/2 - self.pf]])
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line_path.append(['h', [self.thick]])
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line_path.append(['v', [self.boxD/self.Dtabs/4 + self.pf/2]])
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if not self.ht: line_path.append(['l', [0, self.boxD/self.Dtabs/4 + self.pf/2]])
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#
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if corners:
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line_path.append(['v', [self.thick]])
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line_path.append(['h', [-self.thick]])
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else:
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line_path.append(['h', [-self.thick]])
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line_path.append(['v', [self.thick]])
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# base
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if not self.ht: line_path.append(['l', [-self.boxW/self.Wtabs/4 - self.pf/2, 0]])
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for i in range(int(self.Wtabs)):
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line_path.append(['h', [-self.boxW/self.Wtabs/4 - self.pf/2]])
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#line_path.append(['v', [0, -thick]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'v', -1):
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line_path.append(l)
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line_path.append(['h', [-self.boxW/self.Wtabs/2 + self.pf]])
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line_path.append(['v', [self.thick]])
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line_path.append(['h', [-self.boxW/self.Wtabs/4 - self.pf/2]])
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if not self.ht: line_path.append(['l', [-self.boxW/self.Wtabs/4 - self.pf/2, 0]])
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#
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if corners:
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line_path.append(['h', [-self.thick]])
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line_path.append(['v', [-self.thick]])
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else:
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line_path.append(['v', [-self.thick]])
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line_path.append(['h', [-self.thick]])
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# LHS
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if not self.ht: line_path.append(['l', [0, -self.boxD/self.Dtabs/4 - self.pf/2]])
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for i in range(int(self.Dtabs)):
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line_path.append(['v', [-self.boxD/self.Dtabs/4 - self.pf/2]])
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line_path.append(['h', [self.thick]])
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line_path.append(['v', [-self.boxD/self.Dtabs/2 + self.pf]])
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#line_path.append(['h', [-thick, 0]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'h', -1):
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line_path.append(l)
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line_path.append(['v', [-self.boxD/self.Dtabs/4 - self.pf/2]])
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if not self.ht: line_path.append(['l', [0, -self.boxD/self.Dtabs/4 - self.pf/2]])
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#
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if not corners: line_path.append(['h', [self.thick]])
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return line_path
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def draw_HD_side(self, startx, starty, corners, mask=False):
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""" Return an SVG path for the short side of box
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- the Height * Depth dimension """
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line_path = []
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# top row of tabs
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line_path.append(['M', [startx, starty]])
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if not(mask and corners and self.kerf == 0.0):
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line_path.append(['h', [self.thick]])
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else:
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line_path.append(['m', [self.thick, 0]])
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if not self.ht: line_path.append(['l', [self.boxD/self.Dtabs/4 - self.pf/2, 0]])
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for i in range(int(self.Dtabs)):
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line_path.append(['h', [self.boxD/self.Dtabs/4 - self.pf/2]])
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line_path.append(['v', [-self.thick]])
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line_path.append(['h', [self.boxD/self.Dtabs/2 + self.pf]])
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#line_path.append(['v', [0, thick]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'v', 1):
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line_path.append(l)
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line_path.append(['h', [self.boxD/self.Dtabs/4 - self.pf/2]])
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if not self.ht: line_path.append(['l', [self.boxD/self.Dtabs/4 - self.pf/2, 0]])
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line_path.append(['h', [self.thick]])
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#
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if not self.ht: line_path.append(['l', [0, self.boxH/self.Htabs/4 + self.pf/2]])
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for i in range(int(self.Htabs)):
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line_path.append(['v', [self.boxH/self.Htabs/4 + self.pf/2]])
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#line_path.append(['h', [-thick, 0]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'h', -1):
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line_path.append(l)
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line_path.append(['v', [self.boxH/self.Htabs/2 - self.pf]])
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line_path.append(['h', [self.thick]])
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line_path.append(['v', [self.boxH/self.Htabs/4 + self.pf/2]])
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if not self.ht: line_path.append(['l', [0, self.boxH/self.Htabs/4 + self.pf/2]])
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line_path.append(['h', [-self.thick]])
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#
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if not self.ht: line_path.append(['l', [-self.boxD/self.Dtabs/4 + self.pf/2, 0]])
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for i in range(int(self.Dtabs)):
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line_path.append(['h', [-self.boxD/self.Dtabs/4 + self.pf/2]])
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#line_path.append(['v', [0, thick]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'v', 1): # this is the weird +1 instead of -1 dimple
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line_path.append(l)
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line_path.append(['h', [-self.boxD/self.Dtabs/2 - self.pf]])
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line_path.append(['v', [-self.thick]])
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line_path.append(['h', [-self.boxD/self.Dtabs/4 + self.pf/2]])
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if not self.ht: line_path.append(['l', [-self.boxD/self.Dtabs/4 + self.pf/2, 0]])
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line_path.append(['h', [-self.thick]])
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#
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if self.kerf > 0.0: # if fit perfectly - don't draw double line
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if not self.ht: line_path.append(['l', [0, -self.boxH/self.Htabs/4 - self.pf/2]])
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for i in range(int(self.Htabs)):
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line_path.append(['v', [-self.boxH/self.Htabs/4 - self.pf/2]])
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line_path.append(['h', [self.thick]])
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line_path.append(['v', [-self.boxH/self.Htabs/2 + self.pf]])
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#line_path.append(['h', [-thick, 0]]) # replaced with dimpled version
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for l in self.thickness_line(self.dimple, 'h', -1):
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line_path.append(l)
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line_path.append(['v', [-self.boxH/self.Htabs/4 - self.pf/2]])
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if not self.ht: line_path.append(['l', [0, -self.boxH/self.Htabs/4 - self.pf/2]])
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return line_path
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###--------------------------------------------
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### The main function called by the inkscape UI
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def effect(self):
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# document dimensions (for centering)
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docW = self.svg.unittouu(self.document.getroot().get('width'))
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docH = self.svg.unittouu(self.document.getroot().get('height'))
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# extract fields from UI
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self.boxW = self.svg.unittouu(str(self.options.width) + self.options.units)
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self.boxH = self.svg.unittouu(str(self.options.height) + self.options.units)
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self.boxD = self.svg.unittouu(str(self.options.depth) + self.options.units)
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self.thick = self.svg.unittouu(str(self.options.thickness) + self.options.units)
|
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self.kerf = self.svg.unittouu(str(self.options.kerf_size) + self.options.units)
|
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if self.kerf < 0.01: self.kerf = 0.0 # snap to 0 for UI error when setting spinner to 0.0
|
|
self.Wtabs = self.options.ntab_W
|
|
self.Htabs = self.options.ntab_H
|
|
self.Dtabs = self.options.ntab_D
|
|
self.dimple = self.options.dimples
|
|
line_width = self.options.linewidth
|
|
corners = self.options.corners
|
|
self.dimple_tri = self.options.dstyle
|
|
self.annotation = self.options.annotation
|
|
self.ht = self.options.halftabs
|
|
if not self.ht:
|
|
self.Wtabs += 0.5
|
|
self.Htabs += 0.5
|
|
self.Dtabs += 0.5
|
|
|
|
# Correct for thickness in dimensions
|
|
if self.options.int_ext: # external so add thickness
|
|
self.boxW -= self.thick*2
|
|
self.boxH -= self.thick*2
|
|
self.boxD -= self.thick*2
|
|
# adjust for laser kerf (precise measurement)
|
|
self.boxW += self.kerf
|
|
self.boxH += self.kerf
|
|
self.boxD += self.kerf
|
|
|
|
# Precise fit or dimples (if kerf > 0.0)
|
|
if self.dimple == False: # and kerf > 0.0:
|
|
self.pf = self.kerf
|
|
else:
|
|
self.pf = 0.0
|
|
|
|
# set the stroke width and line style
|
|
sw = self.kerf
|
|
if self.kerf == 0.0: sw = self.stroke_width
|
|
ls = self.line_style
|
|
if line_width: # user wants drawn line width to be same as kerf size
|
|
ls['stroke-width'] = sw
|
|
line_style = str(inkex.Style(ls))
|
|
|
|
###---------------------------
|
|
### create the inkscape object
|
|
box_id = self.svg.get_unique_id('box')
|
|
self.box = g = etree.SubElement(self.svg.get_current_layer(), 'g', {'id':box_id})
|
|
|
|
#Set local position for drawing (will transform to center of doc at end)
|
|
lower_pos = 0
|
|
left_pos = 0
|
|
# Draw Lid (using SVG path definitions)
|
|
line_path = self.draw_WH_lid(left_pos, lower_pos)
|
|
# Add to scene
|
|
line_atts = { 'style':line_style, 'id':box_id+'-lid', 'd':str(Path(line_path)) }
|
|
etree.SubElement(g, inkex.addNS('path','svg'), line_atts)
|
|
|
|
# draw the side of the box directly below
|
|
if self.kerf > 0.0:
|
|
lower_pos += self.boxH + (3*self.thick)
|
|
else: # kerf = 0 so don't draw extra lines and fit perfectly
|
|
lower_pos += self.boxH + self.thick # at lower edge of lid
|
|
left_pos += 0
|
|
# Draw side of the box (placed below the lid)
|
|
line_path = self.draw_WD_side(left_pos, lower_pos, corners=corners)
|
|
# Add to scene
|
|
line_atts = { 'style':line_style, 'id':box_id+'-longside1', 'd':str(Path(line_path)) }
|
|
etree.SubElement(g, inkex.addNS('path','svg'), line_atts)
|
|
|
|
# draw the bottom of the box directly below
|
|
if self.kerf > 0.0:
|
|
lower_pos += self.boxD + (3*self.thick)
|
|
else: # kerf = 0 so don't draw extra lines and fit perfectly
|
|
lower_pos += self.boxD + self.thick # at lower edge
|
|
left_pos += 0
|
|
# Draw base of the box
|
|
line_path = self.draw_WH_lid(left_pos, lower_pos, True)
|
|
# Add to scene
|
|
line_atts = { 'style':line_style, 'id':box_id+'-base', 'd':str(Path(line_path)) }
|
|
etree.SubElement(g, inkex.addNS('path','svg'), line_atts)
|
|
|
|
# draw the second side of the box directly below
|
|
if self.kerf > 0.0:
|
|
lower_pos += self.boxH + (3*self.thick)
|
|
else: # kerf = 0 so don't draw extra lines and fit perfectly
|
|
lower_pos += self.boxH + self.thick # at lower edge of lid
|
|
left_pos += 0
|
|
# Draw side of the box (placed below the lid)
|
|
line_path = self.draw_WD_side(left_pos, lower_pos, corners=corners)
|
|
# Add to scene
|
|
line_atts = { 'style':line_style, 'id':box_id+'-longside2', 'd':str(Path(line_path)) }
|
|
etree.SubElement(g, inkex.addNS('path','svg'), line_atts)
|
|
|
|
# draw next on RHS of lid
|
|
if self.kerf > 0.0:
|
|
left_pos += self.boxW + (2*self.thick) # adequate space (could be a param for separation when kerf > 0)
|
|
else:
|
|
left_pos += self.boxW # right at right edge of lid
|
|
lower_pos = 0
|
|
# Side of the box (placed next to the lid)
|
|
line_path = self.draw_HD_side(left_pos, lower_pos, corners)
|
|
# Add to scene
|
|
line_atts = { 'style':line_style, 'id':box_id+'-endface2', 'd':str(Path(line_path)) }
|
|
etree.SubElement(g, inkex.addNS('path','svg'), line_atts)
|
|
|
|
# draw next on RHS of base
|
|
if self.kerf > 0.0:
|
|
lower_pos += self.boxH + self.boxD + 6*self.thick
|
|
else:
|
|
lower_pos += self.boxH +self.boxD + 2*self.thick
|
|
# Side of the box (placed next to the lid)
|
|
line_path = self.draw_HD_side(left_pos, lower_pos, corners, True)
|
|
# Add to scene
|
|
line_atts = { 'style':line_style, 'id':box_id+'-endface1', 'd':str(Path(line_path)) }
|
|
etree.SubElement(g, inkex.addNS('path','svg'), line_atts)
|
|
|
|
|
|
###----------------------------------------
|
|
# Transform entire drawing to center of doc
|
|
lower_pos += self.boxH*2 + self.boxD*2 + 2*self.thick
|
|
left_pos += self.boxH + 2*self.thick
|
|
g.set( 'transform', 'translate(%f,%f)' % ( (docW-left_pos)/2, (docH-lower_pos)/2))
|
|
|
|
# The implementation algorithm has added intermediate short lines and doubled up when using h,v with extra zeros
|
|
#self.thin(g) # remove short straight lines
|
|
|
|
if __name__ == '__main__':
|
|
LasercutBox().run() |