/
layout.py
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layout.py
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# -*- coding: utf-8 -*-
from __future__ import division
from collections import defaultdict
from operator import attrgetter
from PyQt4 import QtGui,QtCore
from shape import Point,Line
from diagram import VD
from show import IOData,drawDisplay,traverse
from pointToLine import pair
import copy
import time
def savevd(lines,range_points,self,convex):
line = []
for l in traverse(lines):
p1 = copy.deepcopy(l.p1)
p2 = copy.deepcopy(l.p2)
t = Line(p1,p2)
t.avail = l.avail
line.append(t)
return VD(line,range_points,self,convex = convex)
class Canvas(QtGui.QWidget):
edge_painter = (Line(Point(0,0),Point(610,0)),Line(Point(0,0),Point(0,610)),Line(Point(610,0),Point(610,610)),Line(Point(0,610),Point(610,610)))
def __init__(self,parent = None):
super(Canvas, self).__init__()
self.IOData = IOData(self)
self.drawDisplay = drawDisplay(self)
self.parent = parent
self.points = set()
#used to output original points include duplicate
self._points = []
self.lines = []
self.vd = [[],0]
self.tangent = [[],0]
self.hp = [[],0]
self.isstep_by_step = False
self.debug_message = [[],0]
self.msg = ""
self.vertex = []
self.setMouseTracking(True)
def mousePressEvent(self,event):
p = Point(event.x(),event.y())
self._points.append(p)
if p not in self.points:
self.points.add(p)
self.drawDisplay.display_points(p)
self.update()
def mouseMoveEvent(self, event):
self.parent.mouse_location.setText("("+event.x().__str__()+","+event.y().__str__()+")")
def paintEvent(self, event):
qp = QtGui.QPainter()
qp.begin(self)
#print 'paintEvent'
self.drawDisplay.drawPoints(qp)
self.drawDisplay.drawLines(qp)
qp.end()
def Voronoi(self,range_points):
if (range_points[1]-range_points[0]+1) == 2:
#print 'len = 2'
lower = range_points[0]
upper = range_points[1]
line = [Line.biSector(self.points[lower],self.points[upper])]
line[0]._p1 = self.points[lower]
line[0]._p2 = self.points[upper]
#hash table for point mapping to related biSector
self.points[lower].related.append(pair(line[0],self.points[upper]))
self.points[upper].related.append(pair(line[0],self.points[lower]))
#Line.intersect_with_edge(line,Canvas.edge_painter,'colinear')
vd = VD(line,range_points,self)
return vd
elif (range_points[1]-range_points[0]+1) == 3:
#print 'len = 3'
def clip():
lower = range_points[0]
upper = range_points[1]
lines = []
dis = []
t = 0
mid = []
for i in range(lower,upper):
for j in range(i+1,upper+1):
lines.append(Line.biSector(self.points[i],self.points[j]))
self.points[i].related.append(pair(lines[-1],self.points[j]))
self.points[j].related.append(pair(lines[-1],self.points[i]))
lines[-1]._p1 = self.points[i]
lines[-1]._p2 = self.points[j]
mid.append(((self.points[i]+self.points[j])/2,t))
dis.append((t,(self.points[i].x-self.points[j].x)**2+(self.points[i].y-self.points[j].y)**2,Line(self.points[i],self.points[j])))
t = t+1
circumcenter = Line.intersect(lines[0],lines[1])
if circumcenter is not None:
tmp_lines = None
dis.sort(key = lambda x : x[1])
triangle = 'acute'
if dis[0][1]+dis[1][1] == dis[2][1]:
triangle = 'right'
tmp_lines = dis[0:2]
elif dis[0][1]+dis[1][1]<dis[2][1]:
triangle = 'obtuse'
#print triangle
s = dis[2][0]
t = 0
for i in range(lower,upper):
for j in range(i+1,upper+1):
ab = (Line(self.points[i],self.points[j]))
hl = Line(lines[t].p1,circumcenter)
result = Line.intersect(hl,ab)
#do not determine the longest side of right triangle in the same way
if not (triangle == 'right' and t == s):
if result is None:
#reverse policy for longest side of obtuse
if not (triangle == 'obtuse' and t == s):
lines[t].p1 = circumcenter
else:
lines[t].p2 = circumcenter
else:
if not (triangle == 'obtuse' and t == s):
lines[t].p2 = circumcenter
else:
lines[t].p1 = circumcenter
t = t+1
#now determine the longest side of right triangle
if triangle == 'right':
t = dis[2][0]
if Line.intersect(Line(lines[t].p1,circumcenter),tmp_lines[0][2]) != None or Line.intersect(Line(lines[t].p1,circumcenter),tmp_lines[1][2]) != None:
lines[t].p1,lines[t].p2 = circumcenter,lines[t].p2
else:
lines[t].p1,lines[t].p2 = circumcenter,lines[t].p1
#create circumcenter related points
circumcenter.iscircumcenter = True
lines[0].connected.append(lines[1])
lines[0].connected.append(lines[2])
lines[1].connected.append(lines[0])
lines[1].connected.append(lines[2])
lines[2].connected.append(lines[0])
lines[2].connected.append(lines[1])
else:
mid.sort(key = lambda s: attrgetter('x','y')(s[0]))
t = mid[1][1]
del_line = lines[t]
for i in range(lower,upper+1):
u = self.points[i].related
for j in range(0,len(u)):
if u[j].line is del_line:
del u[j]
break
del lines[t]
#Line.intersect_with_edge(lines,Canvas.edge_painter,'colinear')
return lines
lines = []+clip()
return VD(lines,range_points,self)
elif (range_points[1]-range_points[0]+1) == 1:
return VD([],range_points,self)
else:
mid = int((range_points[1]+range_points[0])/2)
VDL = self.Voronoi((range_points[0],mid))
if self.isstep_by_step == True:
#vdl = VD(copy.deepcopy(VDL.lines),copy.deepcopy(VDL.range_points),self)
vdl = savevd(VDL.lines,VDL.range_points,self,VDL.convex)
vdl.pos = 'left'
vdl.color = QtCore.Qt.blue
self.vd[0].append(vdl)
VDR = self.Voronoi((mid+1,range_points[1]))
if self.isstep_by_step == True:
#vdr = VD(copy.deepcopy(VDR.lines),copy.deepcopy(VDR.range_points),self)
vdr = savevd(VDR.lines,VDR.range_points,self,VDR.convex)
vdr.pos = 'right'
vdr.color = QtCore.Qt.red
vdr.other = vdl
vdl.other = vdr
self.vd[0].append(vdr)
merge_vd = VD.merge(VDL,VDR,self.tangent)
self.debug_message[0].append(self.msg)
self.msg = ""
return merge_vd
def prepare(self):
pset = self.points
self.points = []
for p in pset:
self.points.append(p)
self.points.sort(key= attrgetter('x','y'))
def Run(self):
if self.isstep_by_step == False:
self.prepare()
ans = self.Voronoi((0,len(self.points)-1))
Line.intersect_with_edge(ans.lines,Canvas.edge_painter)
self.lines = ans.lines
self.vertex = ans.convex.vertex
self.drawDisplay.display_output()
self.update()
else:
#current state is step_by_step, switch to run all vd
while True:
self.parent.step_button.setEnabled(False)
self.repaint()
if self.vd[1] == len(self.vd[0])-1:
self.drawDisplay.display_output()
time.sleep(1)
self.vd[1] = self.vd[1]+1
if self.vd[1] >= len(self.vd[0]):
break
self.vd = [[],0]
self.hp = [[],0]
self.isstep_by_step = False
def step_by_step(self):
self.parent.step_button.setEnabled(True)
if not self.isstep_by_step == True:
self.isstep_by_step = True
self.prepare()
final = self.Voronoi((0,len(self.points)-1))
#for run after step
self.lines = final.lines
self.vertex = final.convex.vertex
Line.intersect_with_edge(final.lines,Canvas.edge_painter)
#final_vd = VD(copy.deepcopy(final.lines),copy.deepcopy(final.range_points),self)
final_vd = savevd(final.lines,final.range_points,self,final.convex)
final_vd.pos = 'final'
final_vd.color = QtCore.Qt.black
self.vd[0].append(final_vd)
self.repaint()
if self.vd[1] == len(self.vd[0])-1:
self.drawDisplay.display_output()
self.vd[1] = self.vd[1]+1
if self.vd[1] >= len(self.vd[0]):
self.parent.step_button.setEnabled(False)
self.vd = [[],0]
self.hp = [[],0]
self.isstep_by_step = False