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main.py
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main.py
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import logging
import threading
import time
import numpy as np
from vpython import *
import sys
import time
import copy
import threading
import multiprocessing
import matplotlib.pyplot as plt
import random
import math
from util import *
NUM_TRHEAD = 8
M = 0.1
K = 5000;
KC = 100000;
g = vector(0,0,-9.81)
DT = 0.0005
FPS = 20
TIME = 5
OMEGA = 10
BREATH = True
EVAL = 0
DRAW = True
NUM_SYS = 5
MUs = 0.1
MUk = 0.8
DAMP = 0.9999
T = 0
SIDE = 0.1
def dist(a,b):
c = a-b
return np.sqrt(c.x*c.x + c.y*c.y+c.z*c.z)
class Mass(object):
def __init__(self):
self.mass = M
self.pos = vector(0,0,0)
self.v = vector(0,0,0)
self.a = vector(0,0,0)
class Spring(object):
def __init__(self):
self.k = 1
self.l = 0.1
self.l0 = self.l
self.idx1 = 1
self.idx2 = 1
self.A = 0.1
self.B = 0.1
self.w = OMEGA
self.C = 0
class System(object):
def __init__(self,dir_name):
self.ss = []
self.ms = []
self.Fs = []
self.balls = [] #used for drawing
self.cylinders= [] #used for drawing
self.EVAL = 0
self.frame = 0
self.triangles = []
self.triangle_idxs = []
# loc_set = set()
# permitted_spring= set()
# for loc in locs:
# points = (0,1)
# m_in_cube = []
# for x in points:
# for y in points:
# for z in points:
# vec = vector(x,y,z)*SIDE
# trans = vector(loc[0],loc[1],loc[2])*SIDE
# vec = vec + trans
# loc_set.add((vec.x,vec.y,vec.z))
# print(vec.x,vec.y,vec.z)
# m_in_cube.append(vec)
# #work on springs
# for l1 in m_in_cube:
# for l2 in m_in_cube:
# if not (l1.x == l2.x and l1.y == l2.y and l1.z == l2.z):
# tup1 = (l1.x ,l1.y ,l1.z, l2.x ,l2.y ,l2.z)
# tup2 = (l2.x ,l2.y ,l2.z, l1.x ,l1.y ,l1.z)
# if not (tup1 in permitted_spring and tup2 in permitted_spring):
# permitted_spring.add((l1.x ,l1.y ,l1.z, l2.x ,l2.y ,l2.z))
# for loc in loc_set:
# m = Mass()
# m.pos = vector(loc[0],loc[1],loc[2])
# self.ms.append(m)
# if DRAW:
# ball = sphere (color = color.green, radius = 0.01, pos = m.pos,remain=1, visible=False)
# self.balls.append(ball)
# for i in range(0,len(self.ms)):
# for j in range(i,len(self.ms)):
# if i==j:
# continue
# # if not close(dist(self.ms[i].pos,self.ms[j].pos)):
# # continue
# l1 = self.ms[i].pos
# l2 = self.ms[j].pos
# tup = (l1.x ,l1.y ,l1.z, l2.x ,l2.y ,l2.z)
# if not tup in permitted_spring:
# continue
# s = Spring()
# s.k = K
# s.l = dist(self.ms[i].pos,self.ms[j].pos)
# s.idx1 = i
# s.idx2 = j
# self.ss.append(s)
# vec2 = self.ms[i].pos
# vec1 = self.ms[j].pos
# if DRAW:
# c = cylinder(pos=vec2, axis=vec1-vec2, radius=0.002,remain = 1,visible=False)
# self.cylinders.append(c)
file_name = dir_name+"/"+"model.txt"
with open(file_name) as f:
content = f.readlines()
content = [x.strip().split() for x in content]
pos = 0
num_m = int(content[0][0])
num_s = int(content[1][0])
num_rect = int(content[2][0])
print(num_rect)
pos +=3
for i in range(0,num_m):
c = [float(x) for x in content[pos] ]
loc = vector(c[0],c[1],c[2])
pos = pos+1
m = Mass()
m.pos = loc
self.ms.append(m)
if DRAW:
ball = sphere (color = color.green, radius = 0.01, pos = m.pos,remain=1, visible=False)
self.balls.append(ball)
for i in range(0,num_s):
idxs = [int(x) for x in content[pos] ]
pos = pos+1
s = Spring()
s.l = dist(self.ms[idxs[0]].pos,self.ms[idxs[1]].pos)
s.idx1 = idxs[0]
s.idx2 = idxs[1]
self.ss.append(s)
vec2 = self.ms[idxs[0]].pos
vec1 = self.ms[idxs[0]].pos
if DRAW:
c = cylinder(pos=vec2, axis=vec1-vec2, radius=0.002,remain = 1,visible=False)
self.cylinders.append(c)
for i in range(0,num_rect):
idxs = [int(x) for x in content[pos]]
pos = pos+1
a = vertex( pos=self.ms[idxs[0]].pos,color= vec(0,102/255,204/255))
b = vertex( pos=self.ms[idxs[1]].pos,color= vec(0,128/255,1))
c = vertex( pos=self.ms[idxs[2]].pos,color= vec(153/255,1,1))
# random.seed(0)
# a = vertex( pos=self.ms[idxs[0]].pos,color= vec(random.uniform(0, 1),102/255,204/255))
# b = vertex( pos=self.ms[idxs[1]].pos,color= vec(0,random.uniform(0, 1),1))
# c = vertex( pos=self.ms[idxs[2]].pos,color= vec(153/255,1,random.uniform(0, 1)))
T = triangle( v0=a, v1=b, v2=c )
self.triangle_idxs.append(idxs)
self.triangles.append(T)
print(content[pos-1])
# --------------------------reading frame by frame -------------------------------------
self.status = []
file_name = dir_name+"/"+"status.txt"
with open(file_name) as f:
content = f.readlines()
content = [x.strip().split() for x in content]
pos = 0
for i in range(0,int(len(content)/num_m)):
step = []
for j in range(num_m):
c = [float(x) for x in content[pos] ]
loc = vector(c[0],c[1],c[2])
step.append(loc)
pos+=1
#print(step)
self.status.append(step)
# print("read")
# for i in range(num_m*num_m*num_m):
# print(i)
# a = vertex( pos=vec(0,0,0), color= vec(1,0,0))
# b = vertex( pos=vec(0,0,0),color= vec(0,1,0) )
# c = vertex( pos=vec(0,0,0),color= vec(0,0,1) )
# T = triangle( v0=a, v1=b, v2=c )
# self.triangles.append(T)
# def rotate(self,angle, axis):
# for i in range(0,len(self.ms)):
# self.ms[i].pos=rotate(self.ms[i].pos,angle,axis)
# def translate(self, dirc):
# for i in range(0,len(self.ms)):
# self.ms[i].pos= self.ms[i].pos + dirc
def step(self,time = 0):
return
def draw(self):
ms,ss = self.ms, self.ss
for i in range(0,len(self.balls)):
self.balls[i].pos = ms[i].pos
self.balls[i].visible = False
for i in range(0,len(self.cylinders)):
s = ss[i]
vec1 = ms[s.idx1].pos
vec2 = ms[s.idx2].pos
#rod = cylinder(pos=vec2, axis=vec1-vec2, radius=0.005,remain = 1)
self.cylinders[i].pos = vec2
self.cylinders[i].axis = vec1-vec2
self.cylinders[i].visible = True
strain = abs(mag(vec1-vec2)-s.l0)/s.l0
#print(strain)
#self.cylinders[i].color = vector(min((mag(vec1-vec2)-s.l0)/s.l0,1) , 1, 1)
def draw_frame(self):
scene.width = 1920
scene.height = 1080
step = self.status[self.frame]
ms,ss = self.ms, self.ss
for i in range(0,len(self.balls)):
self.balls[i].pos = ms[i].pos = self.status[self.frame][i]
self.balls[i].visible = False
for i in range(0,len(self.cylinders)):
s = ss[i]
vec1 = ms[s.idx1].pos
vec2 = ms[s.idx2].pos
#rod = cylinder(pos=vec2, axis=vec1-vec2, radius=0.005,remain = 1)
self.cylinders[i].pos = vec2
self.cylinders[i].axis = vec1-vec2
self.cylinders[i].visible = False
strain = abs(mag(vec1-vec2)-s.l0)/s.l0
for i in range(0,len(self.triangles)):
idxs= self.triangle_idxs[i]
self.triangles[i].v0.pos = ms[idxs[0]].pos
self.triangles[i].v1.pos = ms[idxs[1]].pos
self.triangles[i].v2.pos = ms[idxs[2]].pos
#print("drawing")
idx = 0
num_m = len(ms)
# for i in range(num_m):
# for j in range(num_m):
# for k in range(num_m):
# print(i,j,k)
# self.triangles[idx].v0.pos = ms[i].pos
# self.triangles[idx].v1.pos = ms[j].pos
# self.triangles[idx].v2.pos = ms[k].pos
# self.triangles[idx].visible = True;
# idx = idx +1
self.frame += 1
if __name__ == "__main__":
if DRAW:
a=1
draw_world()
s = System("./")
# a = vertex( pos=vec(0,0,0) , color= vec(1,0,0))
# b = vertex( pos=vec(0,0,0),color= vec(0,1,0) )
# c = vertex( pos=vec(0,0,0),color= vec(0,0,1) )
# T = triangle( v0=a, v1=b, v2=c )
# T.visible = False
#s.draw()
#exit()
i = 0
scene.width = 1920
scene.height = 1080
while True:
s.draw_frame()
# s2.draw_frame()
# s3.draw_frame()