New generator: ShutterBox

A box with a rolling shutter made out of flex

boxes/generators/shutterbox.py

@@ -0,0 +1,158 @@
+#!/usr/bin/env python3
+# Copyright (C) 2013-2016 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 *
+
+class ShutterBox(Boxes):
+    """Box with a rolling shutter made of flex"""
+
+    ui_group = "Box"
+
+    description = "Beware of the rolling shutter effect! Use wax on sliding surfaces."
+
+    def side(self, l, h, r, move=None):
+        t = self.thickness
+
+        if self.move(l+2*t, h+2*t, move, True):
+            return
+
+        self.moveTo(t, t)
+
+        self.ctx.save()
+
+        n = self.n
+        a = 90. / n
+        ls = 2*math.sin(math.radians(a/2)) * (r-2.5*t)
+
+        #self.hole(l-r, r, r-2.5*t)
+        self.fingerHolesAt(0, 2*t, l-r, 0)
+        self.moveTo(l-r, 2.5*t, a/2)
+        for i in range(n):
+            self.fingerHolesAt(0, -0.5*t, ls, 0)
+            self.moveTo(ls, 0, a)
+        if h - 2*r > 2*t:
+            self.moveTo(0, 0, -a/2)
+            self.fingerHolesAt(0, -0.5*t, h - 2*r, 0)
+        self.ctx.restore()
+
+        self.edges["f"](l)
+        self.corner(90)
+        self.edges["f"](h-r)
+        self.polyline(0, -90, t, 90, 0, (90, r+t), l-r, 90, t)
+        self.edges["f"](h)
+
+        self.move(l+2*t, h+2*t, move)
+
+    def cornerRadius(self, r, two=False, move=None):
+        s = self.spacing
+        if self.move(r, r+s, move, True):
+            return
+        for i in range(2 if two else 1):
+            self.polyline(r, 90, r, 180, 0, (-90, r), 0 ,-180)
+            self.moveTo(r, r+s, 180)
+        self.move(r, r+s, move)
+
+    def rails(self, l, r, move=None):
+        t = self.thickness
+        s = self.spacing
+        tw, th = l+2.5*t+3*s, r+1.5*t+3*s
+
+        if self.move(tw, th, move, True):
+            return
+
+        self.moveTo(2.5*t+s, 0)
+        self.polyline(l-r, (90, r+t), 0, 90, t, 90, 0, (-90, r), l-r, 90, t, 90)
+        self.moveTo(-t-s, t+s)
+        self.polyline(l-r, (90, r+t), 0, 90, t, 90, 0, (-90, r), l-r, 90, t, 90)
+        self.moveTo(0.5*t, t+s)
+        self.polyline(l-r, (90, r-1.5*t), 0, 90, t, 90, 0, (-90, r-2.5*t), l-r, 90, t, 90)
+        self.moveTo(-t-s, t+s)
+        self.polyline(l-r, (90, r-1.5*t), 0, 90, t, 90, 0, (-90, r-2.5*t), l-r, 90, t, 90)
+
+        self.move(tw, th, move)
+
+    def door(self, l, h, move=None):
+        t = self.thickness
+        if self.move(l, h, move, True):
+            return
+        self.fingerHolesAt(t, t, h-2*t)
+        self.edge(2*t)
+        self.edges["X"](l-2*t, h)
+        self.polyline(0, 90, h, 90, l, 90, h, 90)
+        self.move(l, h, move)
+
+    def __init__(self):
+        Boxes.__init__(self)
+
+        self.addSettingsArgs(edges.FingerJointSettings)
+        self.addSettingsArgs(edges.FlexSettings, distance=.75, connection=2.)
+
+        self.buildArgParser(x=100, y=100, h=100)
+        self.argparser.add_argument(
+            "--radius",  action="store", type=float, default=0.0,
+            help="radius of the corners")
+
+
+    def render(self):
+        x, y, h, r = self.x, self.y, self.h, self.radius
+
+        self.n = n = 3
+
+        if not r:
+            self.radius = r = h / 2
+        self.radius = r = min(r, h/2)
+
+        t = self.thickness
+        # Initialize canvas
+        self.open()
+        self.ctx.save()
+        self.side(x, h, r, move="right")
+        self.side(x, h, r, move="right")
+        self.rectangularWall(y, h, "fFEF", move="right")
+        self.rectangularWall(y, h-r, "fFeF", move="right")
+
+        self.cornerRadius(r, two=True, move="right")
+        self.rails(x, r, move="right")
+        self.ctx.restore()
+        self.side(x, h, r, move="up only")
+
+        self.rectangularWall(x, y, "FFFF", move="right")
+        self.door(x-r+0.5*math.pi*r + 3*t, y-0.2*t, move="right")
+
+        self.rectangularWall(2*t, y-2.2*t, edges="eeef", move="right")
+
+
+        a = 90. / n
+        ls = 2*math.sin(math.radians(a/2)) * (r-2.5*t)
+
+        edges.FingerJointSettings(t, angle=a).edgeObjects(self, chars="aA")
+        edges.FingerJointSettings(t, angle=a/2).edgeObjects(self, chars="bB")
+
+        self.rectangularWall(x-r, y, "fbfe", move="right")
+
+        self.rectangularWall(ls, y, "fafB", move="right")
+
+        for i in range(n-2):
+            self.rectangularWall(ls, y, "fafA", move="right")
+
+
+        if h - 2*r > 2*t:
+            self.rectangularWall(ls, y, "fbfA", move="right")
+            self.rectangularWall(h - 2*r, y, "fefB", move="right")
+        else:
+            self.rectangularWall(ls, y, "fefA", move="right")
+
+        self.close()