boxespy/boxes/generators/drillstand.py

#!/usr/bin/env python3
# Copyright (C) 2013-2019 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 boxes

class DrillStand(Boxes):
    """Box for drills with each compartment of a different height"""

    description = """Note: `sh` gives the hight of the rows front to back. It though should have the same number of entries as `sy`. These heights are the one on the left side and increase throughout the row. To have each compartement a bit higher than the previous one the steps in `sh` should be a bit bigger than `extra_height`.

Assembly: Start with putting the slots of the inner walls together. Then add the front and the back wall. Be especially careful with adding the bottom. It is always assymetrical and flush with the right/lower side while being a little short on the left/higher side to not protrude into the side wall. Add the very left and right walls last.
"""

    ui_group = "Misc"

    def __init__(self):
        Boxes.__init__(self)

        self.addSettingsArgs(edges.StackableSettings, height=1.0, width=3)
        self.addSettingsArgs(edges.FingerJointSettings)

        self.buildArgParser(sx="25*6", sy="10:20:30", sh="25:40:60")
        self.argparser.add_argument(
            "--extra_height",  action="store", type=float, default=15.0,
            help="height difference left to right")

    def yWall(self, nr, move=None):
        t = self.thickness
        x, sx, y, sy, sh = self.x, self.sx, self.y, self.sy, self.sh        
        eh = self.extra_height * (sum(sx[:nr])+ nr*t - t)/x

        tw, th = sum(sy) + t * len(sy) + t, max(sh) + eh

        if self.move(tw, th, move, True):
            return

        self.moveTo(t)
        self.polyline(y, 90)
        self.edges["f"](sh[-1]+eh)
        self.corner(90)
        for i in range(len(sy)-1, 0, -1):
            s1 = max(sh[i]-sh[i-1], 0) + 4*t
            s2 = max(sh[i-1]-sh[i], 0) + 4*t
            
            self.polyline(sy[i], 90, s1, -90, t, -90, s2, 90)
        self.polyline(sy[0], 90)
        self.edges["f"](sh[0] + eh)
        self.corner(90)
        
        self.move(tw, th, move)

    def sideWall(self, extra_height=0.0, foot_height=0.0, move=None):
        t = self.thickness
        x, sx, y, sy, sh = self.x, self.sx, self.y, self.sy, self.sh
        eh = extra_height
        fh = foot_height

        tw, th = sum(sy) + t * len(sy) + t, max(sh) + eh

        if self.move(tw, th, move, True):
            return

        self.edges["š"](y+2*t)
        self.edgeCorner("š", "e")
        self.edge(fh)
        self.edges["F"](sh[-1]+eh)
        self.polyline(0, 90, t)
        for i in range(len(sy)-1, 0, -1):
            self.edge(sy[i])
            if sh[i] > sh[i-1]:
                self.fingerHolesAt(0.5*t, self.burn, sh[i]+eh, 90)
                self.polyline(t, 90, sh[i] - sh[i-1], -90)
            else:
                self.polyline(0, -90, sh[i-1] - sh[i], 90, t)
                self.fingerHolesAt(-0.5*t, self.burn, sh[i-1]+eh)
        self.polyline(sy[0], 90)
        self.edges["f"](sh[0]+eh)
        self.polyline(0, -90, t, 90, fh)
        self.edgeCorner("e", "š")
        
        self.move(tw, th, move)

    def xWall(self, nr, move=None):
        t = self.thickness
        x, sx, y, sy, sh = self.x, self.sx, self.y, self.sy, self.sh
        eh = self.extra_height

        tw, th = x + 2*t, sh[nr] + eh + t

        a = math.degrees(math.atan(eh / x))
        fa = 1 / math.cos(math.radians(a))

        if self.move(tw, th, move, True):
            return

        
        self.moveTo(t, eh+t, -a)

        for i in range(len(sx)-1):
            self.edges["f"](fa*sx[i])
            h = min(sh[nr - 1], sh[nr])
            s1 = h - 3.95*t + self.extra_height * (sum(sx[:i+1]) + i*t)/x
            s2 = h - 3.95*t + self.extra_height * (sum(sx[:i+1]) + i*t + t)/x

            self.polyline(0, 90+a, s1, -90, t, -90, s2, 90-a)
        self.edges["f"](fa*sx[-1])
        self.polyline(0, 90+a)
        self.edges["f"](sh[nr]+eh)
        self.polyline(0, 90, x, 90)
        self.edges["f"](sh[nr])
        self.polyline(0, 90+a)

        self.move(tw, th, move)

    def xOutsideWall(self, h, edges="fFeF", move=None):
        t = self.thickness
        x, sx, y, sy, sh = self.x, self.sx, self.y, self.sy, self.sh
        
        edges = [self.edges.get(e, e) for e in edges]
        eh = self.extra_height

        tw = x + edges[1].spacing() + edges[3].spacing()
        th = h + eh + edges[0].spacing() + edges[2].spacing()

        a = math.degrees(math.atan(eh / x))
        fa = 1 / math.cos(math.radians(a))

        if self.move(tw, th, move, True):
            return

        
        self.moveTo(edges[3].spacing(), eh+edges[0].margin(), -a)

        self.edge(t*math.tan(math.radians(a)))
        if isinstance(edges[0], boxes.edges.FingerHoleEdge):
            with self.saved_context():
                self.moveTo(0, 0, a)
                self.fingerHolesAt(
                    0, 1.5*t, x*fa - t*math.tan(math.radians(a)), -a)
            self.edge(x*fa - t*math.tan(math.radians(a)))
        elif isinstance(edges[0], boxes.edges.FingerJointEdge):
            edges[0](x*fa - t*math.tan(math.radians(a)))
        else:
            raise ValueError("Only edges h and f supported: ")
        self.corner(a)
        self.edgeCorner(edges[0], edges[1], 90)
        edges[1](eh+h)
        self.edgeCorner(edges[1], edges[2], 90)
        edges[2](x)
        self.edgeCorner(edges[2], edges[3], 90)
        edges[3](h)
        self.edgeCorner(edges[3], edges[0], 90)

        self.moveTo(0, self.burn+edges[0].startwidth(), 0)
        
        for i in range(1, len(sx)):
            posx = sum(sx[:i]) + i*t - 0.5 * t
            length = h + self.extra_height * (sum(sx[:i]) + i*t - t)/x
            self.fingerHolesAt(posx, h, length, -90)

        self.move(tw, th, move)

    def bottomCB(self):
        t = self.thickness
        x, sx, y, sy, sh = self.x, self.sx, self.y, self.sy, self.sh        
        eh = self.extra_height

        a = math.degrees(math.atan(eh / x))
        fa = 1 / math.cos(math.radians(a))

        posy = -0.5 * t
        for i in range(len(sy)-1):
            posy += sy[i] + t
            posx = -t * math.tan(math.radians(a)) # left side is clipped
            for j in range(len(sx)):
                self.fingerHolesAt(posx, posy, fa*sx[j], 0)
                posx += fa*sx[j] + fa*t

    def render(self):
        t = self.thickness
        sx, sy, sh = self.sx, self.sy, self.sh
        self.x = x = sum(sx) + len(sx)*t - t
        self.y = y = sum(sy) + len(sy)*t - t

        bottom_angle = math.atan(self.extra_height / x) # radians

        self.xOutsideWall(sh[0], "hFeF", move="up")
        for i in range(1, len(sy)):
            self.xWall(i, move="up")
        self.xOutsideWall(sh[-1], "hfef", move="up")

        self.rectangularWall(x/math.cos(bottom_angle)-t*math.tan(bottom_angle), y, "fefe", callback=[self.bottomCB], move="up")
        
        self.sideWall(foot_height=self.extra_height+2*t, move="right")
        for i in range(1, len(sx)):
            self.yWall(i, move="right")
        self.sideWall(self.extra_height, 2*t, move="right")