# -*- coding: utf-8 -*-

# ***************************************************************************
# *                                                                         *
# *   Copyright (c) 2018 sliptonic <shopinthewoods@gmail.com>               *
# *                                                                         *
# *   This program is free software; you can redistribute it and/or modify  *
# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
# *   as published by the Free Software Foundation; either version 2 of     *
# *   the License, or (at your option) any later version.                   *
# *   for detail see the LICENCE text file.                                 *
# *                                                                         *
# *   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 Library General Public License for more details.                  *
# *                                                                         *
# *   You should have received a copy of the GNU Library General Public     *
# *   License along with this program; if not, write to the Free Software   *
# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
# *   USA                                                                   *
# *                                                                         *
# ***************************************************************************

import FreeCAD
import Part
import Path
import PathScripts.PathEngraveBase as PathEngraveBase
import PathScripts.PathLog as PathLog
import PathScripts.PathOp as PathOp
import PathScripts.PathOpTools as PathOpTools
import math

from PySide import QtCore

if False:
    PathLog.setLevel(PathLog.Level.DEBUG, PathLog.thisModule())
    PathLog.trackModule(PathLog.thisModule())
else:
    PathLog.setLevel(PathLog.Level.INFO, PathLog.thisModule())

# Qt tanslation handling
def translate(context, text, disambig=None):
    return QtCore.QCoreApplication.translate(context, text, disambig)

def toolDepthAndOffset(width, extraDepth, tool):
    '''toolDepthAndOffset(width, extraDepth, tool) ... return tuple for given parameters.'''
    angle = tool.CuttingEdgeAngle
    if 0 == angle:
        angle = 180
    tan = math.tan(math.radians(angle/2))

    toolDepth = 0 if 0 == tan else width / tan
    extraDepth = extraDepth
    depth = toolDepth + extraDepth
    toolOffset = tool.FlatRadius
    extraOffset = tool.Diameter/2 - width if 180 == angle else extraDepth / tan
    offset = toolOffset + extraOffset
    return (depth, offset)

class ObjectChamfer(PathEngraveBase.ObjectOp):
    '''Proxy class for Chamfer operation.'''

    def opFeatures(self, obj):
        return PathOp.FeatureTool | PathOp.FeatureHeights | PathOp.FeatureBaseEdges | PathOp.FeatureBaseFaces

    def initOperation(self, obj):
        PathLog.track(obj.Label)
        obj.addProperty('App::PropertyDistance',    'Width',      'Chamfer', QtCore.QT_TRANSLATE_NOOP('PathChamfer', 'The desired width of the chamfer'))
        obj.addProperty('App::PropertyDistance',    'ExtraDepth', 'Chamfer', QtCore.QT_TRANSLATE_NOOP('PathChamfer', 'The additional depth of the tool path'))
        obj.addProperty('App::PropertyEnumeration', 'Join',       'Chamfer', QtCore.QT_TRANSLATE_NOOP('PathChamfer', 'How to join chamfer segments'))
        obj.Join = ['Round', 'Miter']
        obj.setEditorMode('Join', 2) # hide for now

    def opExecute(self, obj):
        PathLog.track(obj.Label)
        (depth, offset) = toolDepthAndOffset(obj.Width.Value, obj.ExtraDepth.Value, self.tool)
        PathLog.track(obj.Label, depth, offset)

        self.basewires = []
        self.adjusted_basewires = []
        wires = []
        for base, subs in obj.Base:
            edges = []
            basewires = []
            for f in subs:
                sub = base.Shape.getElement(f)
                if type(sub) == Part.Edge:
                    edges.append(sub)
                elif sub.Wires:
                    basewires.extend(sub.Wires)
                else:
                    basewires.append(Part.Wire(sub.Edges))
            self.edges = edges
            for edgelist in Part.sortEdges(edges):
                basewires.append(Part.Wire(edgelist))

            self.basewires.extend(basewires)

            for w in self.adjustWirePlacement(obj, base, basewires):
                self.adjusted_basewires.append(w)
                wire = PathOpTools.offsetWire(w, base.Shape, offset, True)
                if wire:
                    wires.append(wire)

        self.wires = wires
        self.buildpathocc(obj, wires, [depth], True)

    def opRejectAddBase(self, obj, base, sub):
        '''The chamfer op can only deal with features of the base model, all others are rejected.'''
        return base != self.baseobject

    def opSetDefaultValues(self, obj):
        PathLog.track(obj.Label)
        obj.Width = '1 mm'
        obj.ExtraDepth = '0.1 mm'
        obj.Join = 'Round'

def Create(name):
    '''Create(name) ... Creates and returns a Chamfer operation.'''
    obj = FreeCAD.ActiveDocument.addObject("Path::FeaturePython", name)
    proxy = ObjectChamfer(obj)
    return obj

