New BinTray generator

boxes/generators/bintray.py

@@ -0,0 +1,137 @@
+#!/usr/bin/env python3
+# Copyright (C) 2013-2014 Florian Festi
+#
+#   This program is free software: 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
+#   (at your option) any later version.
+#
+#   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from boxes import *
+import math
+
+class BinFrontEdge(edges.BaseEdge):
+    char = "B"
+    def __call__(self, length, **kw):
+        f = self.settings.front
+        a1 = math.degrees(math.atan(f/(1-f)))
+        a2 = 45 + a1
+        for i, l in enumerate(self.settings.sy):
+            self.corner(-a1)
+            self.edges["e"](l* (f**2+(1-f)**2)**0.5)
+            self.corner(a2)            
+            self.edges["f"](l*f*2**0.5)
+            self.corner(-45)
+            if i < len(self.settings.sy)-1:
+                self.edge(self.thickness)
+
+    def margin(self):
+        return max(self.settings.sy) * 0.5*2**0.5
+        
+class BinTray(Boxes):
+    """A Type tray variant to be used up right with sloped walls in front"""
+
+    def __init__(self):
+        Boxes.__init__(self)
+        self.buildArgParser("sx", "sy", "h", "outside")
+        self.addSettingsArgs(edges.FingerJointSettings, finger=2.0, space=2.0,
+                             surroundingspaces=0.5)
+        self.argparser.add_argument(
+            "--front", action="store", type=float, default=0.4,
+            help="fraction of bin height covert with slope")
+
+    def xSlots(self):
+        posx = -0.5 * self.thickness
+        for x in self.sx[:-1]:
+            posx += x + self.thickness
+            posy = 0
+            for y in self.sy:
+                self.fingerHolesAt(posx, posy, y)
+                posy += y + self.thickness
+
+    def ySlots(self):
+        posy = -0.5 * self.thickness
+        for y in self.sy[:-1]:
+            posy += y + self.thickness
+            posx = 0
+            for x in self.sx:
+                self.fingerHolesAt(posy, posx, x)
+                posx += x + self.thickness
+
+    def xHoles(self):
+        posx = -0.5 * self.thickness
+        for x in self.sx[:-1]:
+            posx += x + self.thickness
+            self.fingerHolesAt(posx, 0, self.hi)
+            
+    def frontHoles(self, i):
+        def CB():
+            posx = -0.5 * self.thickness
+            for x in self.sx[:-1]:
+                posx += x + self.thickness
+                self.fingerHolesAt(posx, 0, self.sy[i]*self.front*2**0.5)
+        return CB
+
+    def yHoles(self):
+        posy = -0.5 * self.thickness
+        for y in self.sy[:-1]:
+            posy += y + self.thickness
+            self.fingerHolesAt(posy, 0, self.hi)
+
+    def render(self):
+        if self.outside:
+            self.sx = self.adjustSize(self.sx)
+            self.sy = self.adjustSize(self.sy)
+            self.h = self.adjustSize(self.h, e2=False)
+
+        x = sum(self.sx) + self.thickness * (len(self.sx) - 1)
+        y = sum(self.sy) + self.thickness * (len(self.sy) - 1)
+        h = self.h
+        hi = self.hi = h
+        t = self.thickness
+
+        self.open()
+
+        self.addPart(BinFrontEdge(self, self))
+
+        # outer walls
+        self.rectangularWall(x, h, "Ffef", callback=[self.xHoles],  move="right")
+        self.rectangularWall(y, h, "FFBF", callback=[self.yHoles, ], move="up")
+        self.rectangularWall(y, h, "FFBF", callback=[self.yHoles, ])
+        self.rectangularWall(x, h, "Ffef", callback=[self.xHoles, ], move="left")
+        self.rectangularWall(y, h, "FFBF", move="up only")
+
+        # floor
+        self.rectangularWall(x, y, "ffff", callback=[self.xSlots, self.ySlots],move="right")
+        # Inner walls
+        for i in range(len(self.sx) - 1):
+            e = [edges.SlottedEdge(self, self.sy, "f", slots=0.5 * hi), "f", "B", "f"]
+            self.rectangularWall(y, hi, e, move="up")
+
+        for i in range(len(self.sy) - 1):
+            e = [edges.SlottedEdge(self, self.sx, "f"), "f",
+                 edges.SlottedEdge(self, self.sx[::-1], "e", slots=0.5 * hi), "f"]
+            self.rectangularWall(x, hi, e, move="up")
+
+        # Front walls
+        for i in range(len(self.sy)):
+            self.rectangularWall(x, self.sy[i]*self.front*2**0.5, "eFeF", callback=[self.frontHoles(i)], move="up")
+
+        self.close()
+
+
+def main():
+    b = BinTray()
+    b.parseArgs()
+    b.render()
+
+
+if __name__ == '__main__':
+    main()