#!/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 LaserClamp(Boxes):
    """A clamp to hold down material to a knife table"""

    ui_group = "Misc"

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

        self.addSettingsArgs(edges.FingerJointSettings, surroundingspaces=0)
        self.argparser.add_argument(
            "--minheight",  action="store", type=float, default=25.,
            help="minimal clamping height in mm")
        self.argparser.add_argument(
            "--maxheight",  action="store", type=float, default=50.,
            help="maximal clamping height in mm")
        self.argparser.add_argument(
            "--extraheight",  action="store", type=float, default=0.,
            help="extra height to make operation smoother in mm")

    def topPart(self, l, move=None):
        t = self. thickness

        tw, th = 10*t, l+4*t

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

        self.moveTo(4*t, 0)
        self.rectangularHole(t, 2*t+l/2, 1.1*t, l)
        self.polyline(2*t, (90, t), l+t, -90, 2*t, 90, 0,
                      (90, 2*t), 3*t, (90, t),
                      0, (-90, t), 0, 90, 0, (-180, 0.5*t), 0, 90, 0,
                      (180, t), t, (-90, t),
                      l-2*t, (90, t))
        self.move(tw, th, move)

    def bottomPart(self, h_min, h_extra, move=None):
        t = self. thickness

        tw, th = 10*t, h_min+4*t

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

        ls = t/2*(2**.5)
        self.moveTo(2*t, 0)
        self.fingerHolesAt(3*t, 2*t, h_min+h_extra, 90)
        if h_extra:
            self.polyline(4*t, (90,t), h_extra-2*t, (-90, t), 0, (90, 2*t), 0, 45)
        else:
            self.polyline(6*t, (90, 2*t), 0, 45)
        self.polyline(*[ls, 90, ls, -90]*3)
        self.polyline(0, -45, h_min, (90, t), 2*t, (90, t),
                      h_min+h_extra-1*t, (-90, t), t, (180, t),
                      0, 90, 0, (-180, 0.5*t), 0 , 90)

        self.move(tw, th, move)

    def render(self):
        t = self. thickness
        h_max, h_min, h_extra = self.maxheight, self.minheight,self.extraheight
        self.open()

        if h_extra and h_extra < 2*t:
            h_extra = 2*t
        
        self.topPart(h_max+h_extra, move="right")
        self.bottomPart(h_min, h_extra, move="right")
        self.bottomPart(h_min, h_extra, move="right")
        self.rectangularWall(1.1*t, h_min+h_extra, "efef")
        self.close()