kdxcxs
5 years ago
commit
ccf53cde75
3 changed files with 91 additions and 0 deletions
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*.gif |
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/venv |
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# coding:utf-8 |
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from tkinter import Tk,Canvas |
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import math,threading,time |
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class TkCube(object): |
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def __init__(self): |
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self.points = [[-1,1,-1], # LeftFrontDown |
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[1,1,-1], # RFD |
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[-1,-1,-1], # LBD |
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[1,-1,-1], # RBD |
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[-1,1,1], # LFU |
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[1,1,1], # RFU |
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[-1,-1,1], # LBU |
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[1,-1,1]] # RBU |
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self.pit = [[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0]] # point in 2d |
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self.angle = 0 |
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self.speed = 1 # π/s |
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self.fps = 60 |
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self.dist = [5,4] # distance between the cube's center and focal point/canvas |
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self.st = 1/self.fps # sleep time |
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self.apf = math.pi * self.speed / self.fps # angle per frame |
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# init canvas |
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self.tkroot = Tk() |
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self.cvs = [Canvas(self.tkroot,bg='white',width=800,height=600),Canvas(self.tkroot,bg='white',width=800,height=600)] |
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self.cvs[0].pack() |
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self.showingCv = 0 |
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self.hiddenCv = 1 |
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def rotate(self): |
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self.angle += self.apf |
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if self.angle > 2*math.pi: |
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self.angle -= 2*math.pi |
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radius = math.sqrt(2) # 点旋转的半径 |
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for pair in [[0,4,-math.pi/4], |
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[1,5,math.pi/4], |
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[2,6,math.pi*3/4], |
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[3,7,-math.pi*3/4]]: # rotate in pairs |
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center = [radius*math.sin(self.angle+pair[2]),radius*math.cos(self.angle+pair[2])] |
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# x |
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self.points[pair[0]][0] = center[0] |
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self.points[pair[1]][0] = center[0] |
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# y |
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self.points[pair[0]][1] = center[1] |
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self.points[pair[1]][1] = center[1] |
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def draw(self): |
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# project points into 2D canvas 投影到2D |
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for pt in range(8): |
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rate = self.dist[1]/(self.dist[0]+self.points[pt][1]) |
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scale = 200 |
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self.pit[pt][0] = self.points[pt][0]*rate*scale |
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self.pit[pt][1] = self.points[pt][2]*rate*scale |
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self.cvs[self.hiddenCv].delete('all') |
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# for dcp,nps in [[1,[0,3,5]], # drawing central point:以1,2,4,7四个点为中心,分别连接相邻的三个点即可绘成正方体 |
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# [2,[0,3,6]], |
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# [4,[0,5,6]], |
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# [7,[3,5,6]]]: |
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# 不知道为什么上面的画不出正确的正方体,底面是对角线不是楞┑( ̄Д  ̄)┍ |
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for dcp,nps in [[1,[0,2,5]], # drawing central point:以1,2,4,7四个点为中心,分别连接相邻的三个点即可绘成正方体 |
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[2,[1,3,6]], |
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[0,[3]], |
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[4,[0,5,7]], |
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[7,[3,4,6]], |
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[6,[5]]]: |
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for np in nps: # nearby point |
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self.cvs[self.hiddenCv].create_line(self.pit[dcp][0]+400,self.pit[dcp][1]+300,self.pit[np][0]+400,self.pit[np][1]+300) # 因为坐标原点在左上角,让x和y分别加400和300让画面在窗口中心 |
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# 切换canvas |
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self.cvs[self.showingCv].pack_forget() |
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self.cvs[self.hiddenCv].pack() |
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self.showingCv,self.hiddenCv = self.hiddenCv,self.showingCv |
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def run(self): |
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while True: |
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# self.rotateThread = threading.Thread(target=self.rotate) |
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# self.rotateThread.run() |
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# self.drawThread = threading.Thread(target=self.draw) |
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# self.drawThread.run() |
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self.rotate() |
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self.draw() |
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# print(self.points) |
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time.sleep(self.st) |
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def start(self): |
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self.runThread = threading.Thread(target=self.run) |
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self.runThread.start() |
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self.tkroot.mainloop() |
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if __name__ == '__main__': |
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tc = TkCube() |
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tc.start() |
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# PlayWith3D |
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A project about [my](cx@kdxcxs.com) 3D exploring journey |
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