def getLengthDecreaing(self):
length_list = []
for i, poly in enumerate(self.polys):
bottom_pt, top_pt = LPAssistant.getBottomPoint(
poly), LPAssistant.getTopPoint(poly)
length_list.append([i, top_pt[1] - bottom_pt[1]])
return length_list
def getNFP(self, j, i):
# j是固定位置，i是移动位置
row = j * 192 + i * 16 + self.poly_status[j][2] * 4 + self.poly_status[
i][2]
bottom_pt = LPAssistant.getBottomPoint(self.polys[j])
delta_x, delta_y = bottom_pt[0], bottom_pt[1]
nfp = GeoFunc.getSlide(json.loads(self.fu_pre["nfp"][row]), delta_x,
delta_y)
return nfp
def getPrerequisite(self, i, orientation, **kw):
# 获得全部NFP以及拆分情况
self.all_nfps,self.all_points_target,self.all_edges_target = [],[],[]
offline = kw['offline']
for j, item in enumerate(self.polys):
# 两个相等的情况，跳过否则会计算错误
if j == i:
self.all_nfps.append([])
self.all_points_target.append([])
self.all_edges_target.append([])
continue
# 预处理的情况
points_target, edges_target, nfp = [], [], []
if offline == True:
row = j * 192 + i * 16 + self.poly_status[j][
2] * 4 + orientation
bottom_pt = LPAssistant.getBottomPoint(self.polys[j])
delta_x, delta_y = bottom_pt[0], bottom_pt[1]
nfp = GeoFunc.getSlide(json.loads(self.fu_pre["nfp"][row]),
delta_x, delta_y)
else:
nfp = LPAssistant.deleteOnline(
self.NFPAssistant.getDirectNFP(
self.polys[j], self.polys[i])) # NFP可能有同一直线上的点
# 计算对应目标函数
for pt_index in range(len(nfp)):
edges_target.append(
LPAssistant.getTargetFunction(
[nfp[pt_index - 1], nfp[pt_index]]))
points_target.append([nfp[pt_index][0], nfp[pt_index][1]])
# 添加上去
self.all_nfps.append(nfp)
self.all_edges_target.append(edges_target)
self.all_points_target.append(points_target)
# 获取IFR
self.target_poly = self.all_polygons[i][orientation]
self.ifr = PackingUtil.getInnerFitRectangle(self.target_poly,
self.cur_length,
self.width)
self.IFR = Polygon(self.ifr)
self.final_IFR = Polygon(self.ifr)