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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
import math
from PyQt5 import QtGui
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
class Particule(QGraphicsItem):
def __init__(self,root):
super().__init__()
self.x = 0
self.y = 0
self.setRayon(2)
self.setVitesseInitiale(5)
self.setVxVyInit(45)
self.setMasse(0.001)
self.noIdentifiant = root.count
def boundingRect(self):
return QRectF(-self.rayon, -self.rayon, 2 * self.rayon, 2 * self.rayon)
def paint(self, painter, option, widget):
painter.setBrush(Qt.green)
painter.drawEllipse(-self.rayon, -self.rayon, 2 * self.rayon, 2 * self.rayon)
def setMasse(self,masse):
self.masse=masse
def getMasse(self):
return self.masse
def getX(self):
return self.mapToScene(0, 0).x()
def getY(self):
return self.mapToScene(0, 0).y()
def getVx(self):
return self.vx
def getVy(self):
return self.vy
def setVx(self,vx):
self.vx = vx
def setVy(self,vy):
self.vy = vy
def getRayon(self):
return self.rayon
def setRayon(self,rayon):
self.rayon = rayon
def setVitesseInitiale(self,vitesse):
self.vitesse = vitesse
def setVitesse(self,vx,vy):
self.vx , self.vy = vx , vy
def setVxVyInit(self,angle):
self.vx = int(math.cos(angle * math.pi / 180) * self.vitesse)
self.vy = int(math.sin(angle * math.pi / 180) * self.vitesse)
def bouge(self):
self.x , self.y = self.getX() , self.getY()
self.y = self.y + self.vy
self.x = self.x + self.vx
self.setY(self.y)
self.setX(self.x)
self.testCollision()
def testCollision(self):
zoneDanger = self.scene().items(QRectF(self.mapToScene(-2 * self.rayon-abs(self.vx), -2 * self.rayon-abs(self.vy)),
self.mapToScene(2 * self.rayon + abs(self.vx), 2 * self.rayon + abs(self.vy))))
for item in zoneDanger:
if item is self:
continue
if type(self) is type(item):
if (self.getX()-item.getX())*(self.getX()-item.getX()) + (self.getY()-item.getY())*(self.getY()-item.getY()) < (self.getRayon() + item.getRayon())*(self.getRayon() + item.getRayon()):
v1x = self.getVx()
v1y = self.getVy()
v2x = item.getVx()
v2y = item.getVy()
m1 = self.getMasse()
m2 = item.getMasse()
mu1 = m1 /(m1 + m2)
mu2 = m2 / (m1 + m2)
p = mu1 * m2 * math.sqrt((v1x * v1x + v1y * v1y + v2x * v2x + v2y * v2y) - 2 * v1x * v2x - 2 * v1y * v2y)
theta = qrand() % 360 /180 * math.pi
v3x = (p / m1 ) * math.cos(theta) + mu1 * v1x + mu2 * v2x
v3y = (p / m1 ) * math.sin(theta) + mu1 * v1y + mu2 * v2y
v4x = (p / m2 ) * math.cos(math.pi + theta) + mu1 * v1x + mu2 * v2x
v4y = (p / m2 ) * math.sin(math.pi + theta) + mu1 * v1y + mu2 * v2y
self.setVitesse(v3x, v3y)
item.setVitesse(v4x, v4y)
root.collision +=1
else:
item.rebondit(self)
class Bord(QGraphicsItem):
def __init__(self):
super().__init__()
self.largeur = 10
self.hauteur = 100
def setLargeur(self,largeur):
self.largeur = largeur
def setHauteur(self,hauteur):
self.hauteur = hauteur
def getHauteur(self):
return self.hauteur
def getLargeur(self):
return self.largeur
def boundingRect(self):
return QRectF(0, 0, self.largeur, self.hauteur)
def paint(self, painter, option, widget):
painter.setBrush(Qt.black)
painter.drawRect(0, 0, self.largeur, self.hauteur)
def getX(self):
return self.mapToScene(0, 0).x()
def getY(self):
return self.mapToScene(0, 0).y()
def setDirection(self,direction):
self.direction = direction
def getDirection(self):
return self.direction
def rebondit(self,particule):
if self.collidesWithItem(particule):
if self.direction == "Gauche":
particule.setVx(-particule.getVx())
particule.setX(int(self.getX() - particule.getRayon() - 1))
elif self.direction == "Droite":
particule.setVx(-particule.getVx())
particule.setX(int(self.getX()+self.getLargeur()+particule.getRayon()+1))
elif self.direction == "Bas":
particule.setVy(-particule.getVy())
particule.setY(int(self.getY()+self.getHauteur()+particule.getRayon()+1))
elif self.direction == "Haut":
particule.setVy(-particule.getVy())
particule.setY(int(self.getY() - particule.getRayon() - 1))
class BordG(Bord): #Bord Gauche
def __init__(self):
super().__init__()
self.setDirection("Droite")
class BordD(Bord): #Bord Droite
def __init__(self):
super().__init__()
self.setDirection("Gauche")
class BordB(Bord): #Bord Bas
def __init__(self):
super().__init__()
self.setDirection("Haut")
class BordH(Bord): #Bord Haut
def __init__(self):
super().__init__()
self.setDirection("Bas")
class Fenetre(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.count = 0
self.collision = 0
mainLayout = QHBoxLayout()
self.scene = QGraphicsScene(0, 0, 500, 400)
self.bordGauche = BordG()
self.bordGauche.setHauteur(420)
self.bordDroit = BordD()
self.bordDroit.setHauteur(420)
self.bordBas = BordB()
self.bordBas.setLargeur(520)
self.bordBas.setHauteur(10)
self.bordHaut = BordH()
self.bordHaut.setLargeur(520)
self.bordHaut.setHauteur(10)
self.scene.addItem(self.bordHaut)
self.scene.addItem(self.bordGauche)
self.scene.addItem(self.bordDroit)
self.scene.addItem(self.bordBas)
self.bordGauche.setPos(-10 , -10)
self.bordDroit.setPos(500 , -10)
self.bordBas.setPos(-10 , 400)
self.bordHaut.setPos(-10,-10)
self.graphicsView = QGraphicsView(self.scene)
mainLayout.addWidget(self.graphicsView)
self.setLayout(mainLayout)
self.dicoParticules=dict()
for i in range(10):
self.dicoParticules[i] = Particule(self)
self.dicoParticules[i].setVxVyInit(qrand() %45 + 10)
self.scene.addItem(self.dicoParticules[i])
self.AugmenteCount()
self.timer = QTimer()
self.timer.timeout.connect(self.timerEvent)
self.timer.start(1000 / 33)
def keyPressEvent(self, event):
key = event.key()
if key == Qt.Key_H:
self.AugmenteCount()
self.dicoParticules[self.count]=Particule(self)
self.dicoParticules[self.count].setVxVyInit(qrand() %45 + 10)
self.scene.addItem(self.dicoParticules[self.count])
def AugmenteCount(self):
self.count +=1
def timerEvent(self):
for i in self.dicoParticules:
self.dicoParticules[i].bouge()
if __name__ == '__main__':
app = QApplication(sys.argv)
root = Fenetre()
root.show()
sys.exit(app.exec_()) |
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