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#-*- coding: utf-8 -*- | |
import copy | |
import json | |
import monotonic | |
class MyEncoder(json.JSONEncoder): | |
def default(self, obj): | |
return obj.__dict__ | |
class CutLayer(object): | |
q = 0 | |
cut_length = 0 | |
in_planes = [] | |
out_planes = [] | |
count_items = 0 | |
def __copy__(self): | |
copy_object = CutLayer() | |
return copy_object | |
def __deepcopy__(self, memodict={}): | |
copy_object = CutLayer() | |
copy_object.q = self.q | |
copy_object.cut_length = self.cut_length | |
copy_object.in_planes = self.in_planes | |
copy_object.out_planes = self.out_planes | |
copy_object.count_items = self.count_items | |
return copy_object | |
def __init__(self, *args, **kwargs): | |
super(CutLayer, self).__init__() | |
self.q = kwargs.get('q', 0) | |
self.cut_length = kwargs.get('cut_length', 0) | |
self.in_planes = kwargs.get('in_planes', []) | |
self.out_planes = kwargs.get('out_planes', []) | |
self.count_items = 0 | |
for i in self.in_planes: | |
self.count_items += i.count | |
def __str__(self): | |
return '<%s> in_pl %dшт, out_pl %dшт' % (self.__class__.__name__, len(self.in_planes), len(self.out_planes)) | |
def __repr__(self): | |
return json.dumps(self.__dict__) | |
class Plane(object): | |
id = None | |
width = 0 | |
height = 0 | |
count = 0 | |
count_in = 0 | |
direction = 0 # horizontal | |
area = 0 | |
x = 0 | |
y = 0 | |
def __copy__(self): | |
copy_object = Plane() | |
return copy_object | |
def __deepcopy__(self, memodict={}): | |
copy_object = Plane() | |
copy_object.id = self.id | |
copy_object.width = self.width | |
copy_object.height = self.height | |
copy_object.count = self.count | |
copy_object.count_in = self.count_in | |
copy_object.direction = self.direction | |
copy_object.area = self.area | |
copy_object.x = self.x | |
copy_object.y = self.y | |
return copy_object | |
def __init__(self, *args, **kwargs): | |
super(Plane, self).__init__() | |
self.id = kwargs.get('id', None) | |
self.width = kwargs.get('width', 0) | |
self.height = kwargs.get('height', 0) | |
self.count = kwargs.get('count', 0) | |
self.count_in = kwargs.get('count_in', 0) | |
self.direction = kwargs.get('direction', 0) | |
self.area = self.width * self.height * self.count | |
self.x = self.x | |
self.y = self.y | |
def __str__(self): | |
return '<%s> %d x %d - %dшт %s' % (self.__class__.__name__, self.width, self.height, self.count, | |
'вер' if self.direction else | |
'гор') | |
def __repr__(self): | |
return json.dumps(self.__dict__) | |
def check_inside(width, height, planes): | |
# check bounding planes | |
out_planes = [] | |
in_planes = [] | |
for plane in planes: | |
pl = copy.deepcopy(plane) | |
if (pl.width > width) or (pl.height > height): | |
# not inside | |
out_planes.append(pl) | |
else: | |
in_planes.append(pl) | |
return in_planes, out_planes | |
def get_min_rest(width, height, cut_width, plane): | |
if plane.count > 1: | |
# horizontal | |
max_width = plane.count * plane.width + (plane.count - 1) * cut_width | |
if max_width > width: | |
cnw = (width + cut_width) // (plane.width + cut_width) | |
width_rest = width - (cnw * plane.width + (cnw - 1) * cut_width) | |
else: | |
width_rest = width - max_width | |
cnw = plane.count | |
# vertical | |
max_height = plane.count * plane.height + (plane.count - 1) * cut_width | |
if max_height > height: | |
cnh = (height + cut_width) // (plane.height + cut_width) | |
height_rest = height - (cnh * plane.height + (cnh - 1) * cut_width) | |
else: | |
height_rest = height - max_height | |
cnh = plane.count | |
if (height_rest < width_rest): | |
plane.direction = 1 # vertical direction | |
plane.count_in = cnh | |
return height_rest | |
else: | |
plane.direction = 0 # horizontal direction | |
plane.count_in = cnw | |
return width_rest | |
else: | |
plane.count_in = plane.count | |
plane.direction = 0 | |
return min((width - plane.width), (height - plane.height)) | |
def order_planes(width, height, cut_width, planes): | |
planes.sort(key=lambda plane: get_min_rest(width, height, cut_width, plane)) | |
def make_cut_layer(x, y, width, height, cut_width, planes, layer_type="default"): | |
in_planes, out_planes = check_inside(width, height, planes) | |
res = CutLayer() | |
current_plane = None | |
q = 0 | |
if len(in_planes) > 0: | |
order_planes(width, height, cut_width, in_planes) | |
cut_lenght = 0 | |
current_plane = in_planes.pop(0) | |
tmp_x = x | |
tmp_y = y #height - y if layer_type == "tabletop" else y | |
if (current_plane.count > 1): | |
for i in range(0, current_plane.count_in, 1): | |
tmp_plane = Plane(**{'id': current_plane.id, | |
'width': current_plane.width, | |
'height': current_plane.height, | |
'count': 1}) | |
tmp_plane.x = tmp_x | |
tmp_plane.y = tmp_y - current_plane.height if layer_type == "tabletop" else tmp_y | |
current_plane.count -= 1 | |
if current_plane.direction == 0: # horizontal | |
tmp_x = tmp_x + current_plane.width + cut_width | |
else: # vertical | |
if layer_type == "tabletop": | |
tmp_y = tmp_y - current_plane.height - cut_width | |
else: | |
tmp_y = tmp_y + current_plane.height + cut_width | |
res.in_planes.append(tmp_plane) | |
# вернуть остаток | |
if current_plane.count > 0: | |
in_planes.append(copy.deepcopy(current_plane)) | |
# set current plane size as summ of planes | |
if current_plane.direction == 0: # horizontal | |
current_plane.width = tmp_x - x - cut_width | |
else: | |
if layer_type == "tabletop": | |
current_plane.height = y - tmp_y + cut_width | |
else: | |
current_plane.height = tmp_y - y - cut_width | |
else: | |
# SET LAYER POSITION TO PLANE | |
current_plane.x = tmp_x | |
current_plane.y = tmp_y - current_plane.height if layer_type == "tabletop" else tmp_y | |
res.in_planes.append(copy.deepcopy(current_plane)) | |
# make sub layers | |
# HORIZONTAL CUT | |
# A Layer | |
x_A = x | |
y_A = y - current_plane.height - cut_width if layer_type == "tabletop" else y + current_plane.height + cut_width | |
width_A = width | |
height_A = height - current_plane.height - cut_width | |
# B Layer | |
x_B = x + current_plane.width + cut_width | |
y_B = y | |
width_B = width - current_plane.width - cut_width | |
height_B = current_plane.height | |
layer_A_H = make_cut_layer(x_A, y_A, width_A, height_A, cut_width, copy.deepcopy(in_planes), layer_type) | |
layer_B_H = make_cut_layer(x_B, y_B, width_B, height_B, cut_width, layer_A_H.out_planes, layer_type) | |
# VERTICAL CUT | |
# A Layer | |
x_C = x | |
y_C = y - current_plane.height - cut_width if layer_type == "tabletop" else y + current_plane.height + cut_width | |
width_C = current_plane.width | |
height_C = height - current_plane.height - cut_width | |
# B Layer | |
x_D = x + current_plane.width + cut_width | |
y_D = y | |
width_D = width - current_plane.width - cut_width | |
height_D = height | |
layer_C_V = make_cut_layer(x_C, y_C, width_C, height_C, cut_width, copy.deepcopy(in_planes), layer_type) | |
layer_D_V = make_cut_layer(x_D, y_D, width_D, height_D, cut_width, layer_C_V.out_planes, layer_type) | |
res.out_planes.extend(out_planes) | |
# "COMPARE HORIZONTAL CUT %s" % (layer_A_H.q + layer_B_H.q) | |
# "COMPARE VERTICAL CUT %s" % (layer_C_V.q + layer_D_V.q) | |
if (min(layer_A_H.q, layer_B_H.q)) < (min(layer_C_V.q, layer_D_V.q)): | |
# "horizontal cut better" | |
res.q = layer_A_H.q + layer_B_H.q | |
res.in_planes.extend(layer_A_H.in_planes) | |
res.in_planes.extend(layer_B_H.in_planes) | |
res.out_planes.extend(layer_B_H.out_planes) | |
else: | |
# "vertical result better" | |
res.q = layer_C_V.q + layer_D_V.q | |
res.in_planes.extend(layer_C_V.in_planes) | |
res.in_planes.extend(layer_D_V.in_planes) | |
res.out_planes.extend(layer_D_V.out_planes) | |
else: | |
# End cutting | |
# check - width - height | |
if width < 0: | |
width = width + cut_width | |
if height < 0: | |
height = height + cut_width | |
res.q = width * height | |
res.out_planes = out_planes | |
return res | |
def cut_lay(x, y, width, height, cut_width, in_planes, layer_type="default"): | |
iterator = 0 | |
cut_layers = [] | |
while in_planes and iterator < 100: | |
y_pos = height if layer_type == "tabletop" else 0 | |
cut_layer = make_cut_layer(0, y_pos, width, height, cut_width, in_planes, layer_type) | |
cut_layers.append(cut_layer) | |
in_planes = cut_layer.out_planes | |
iterator += 1 | |
return cut_layers | |
def cutting(x, y, width, height, cut_width, in_planes, layer_type="default"): | |
cut_layers = [] | |
#order_planes(width, height, cut_width, in_planes) | |
new_planes = [] | |
new_planes_item = [] | |
area_layer = height * width | |
area_item = 0 | |
while in_planes: | |
area_item += in_planes[0].area | |
if area_item <= area_layer: | |
new_planes_item.append(in_planes.pop(0)) | |
else: | |
new_planes.append(new_planes_item) | |
area_item = 0 | |
new_planes_item = [] | |
if not in_planes and new_planes_item: | |
new_planes.append(new_planes_item) | |
# with open('data1.json', 'w') as f: | |
# json.dump(new_planes[1], f, cls=MyEncoder, ensure_ascii=False, indent=True) | |
print('Листов %d' % len(new_planes)) | |
for i, planes in enumerate(new_planes): | |
print('Кроим %d лист с %d деталей' % (i, get_cnt_planes(planes))) | |
start = monotonic.time.time() | |
cut_lay_item = cut_lay(x, y, width, height, cut_width, planes, layer_type) | |
cnt_t = monotonic.time.time() - start | |
cut_layers.extend(cut_lay_item) | |
print('\t\t\t %f сек' % cnt_t) | |
if i == 2: | |
break | |
return cut_layers | |
def get_cnt_planes(planes): | |
cnt = 0 | |
for i in planes: | |
cnt += i.count | |
return cnt |
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