Discussion :

[rabeh.ram]

Bonjour;
avec PYQT5 et dans QGraphicsView comment créer une animation sur spécifique point(x,y) comme l'image ci-dessous
je fait le partie d'affichage des points a partir un fichier : poitns_file.txt (attaché a discusion ) sur mon code et il reste que le partie d'animation sur un point

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
from math import sqrt
import pandas as pd
 
class Viewer(QGraphicsView):
    photoClicked = pyqtSignal(QPoint)
    rectChanged = pyqtSignal(QRect)
 
    def __init__(self, parent):
        super(Viewer, self).__init__(parent)
        self.rubberBand = QRubberBand(QRubberBand.Rectangle, self)
        self.setMouseTracking(True)
        self.origin = QPoint()
        self.changeRubberBand = False
 
        self._zoom = 0
        self._empty = True
        self._scene = QGraphicsScene(self)
 
        self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
        self.setResizeAnchor(QGraphicsView.AnchorUnderMouse)
        self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.setFrameShape(QFrame.NoFrame)
        self.area = float()
        self.setPoints()
        self.fitInView()
 
    def setPoints(self):
        self._zoom = 0
        df = pd.read_csv('points_file.txt', sep=" ", header=None)
        df.columns = ["pt_name", "x", "y"]
        rad = 75
        for i in range(df.shape[0]):
            pt2 = QGraphicsEllipseItem(float(df["x"].iloc[i]), float(df["y"].iloc[i]), rad, rad)  # add point
            pt2.setBrush(QBrush(Qt.green))
 
 
        maxX = max(df['x'])
        minX = min(df['x'])
        maxY = max(df['y'])
        minY = min(df['y'])
        distance = sqrt((maxX-minX)**2+(maxY-minY)**2)
        self.setScene(self._scene)
        self.setDragMode(self.ScrollHandDrag)
 
    def fitInView(self, scale=True):
        rect = QRectF(self.area)
        if not rect.isNull():
            self.setSceneRect(rect)
            unity = self.transform().mapRect(QRectF(0, 0, 1, 1))
            self.scale(1 / unity.width(), 1 / unity.height())
            viewrect = self.viewport().rect()
            scenerect = self.transform().mapRect(rect)
            factor = min(viewrect.width() / scenerect.width(),
                         viewrect.height() / scenerect.height())
            self.scale(factor, factor)
            self._zoom = 0
 
 
    def wheelEvent(self, event):
            if event.angleDelta().y() > 0:
                factor = 1.25
                self._zoom += 1
            else:
                factor = 0.8
                self._zoom -= 1
            if self._zoom > 0:
                self.scale(factor, factor)
            elif self._zoom == 0:
                self.fitInView()
            else:
                self._zoom = 0
 
class Window(QWidget):
    def __init__(self):
        super(Window, self).__init__()
        self.viewer = Viewer(self)
        self.btnLoad = QToolButton(self)
        self.btnLoad.setText('Fit Into View')
        self.btnLoad.clicked.connect(self.fitPoints)
 
        VBlayout = QVBoxLayout(self)
        VBlayout.addWidget(self.viewer)
        HBlayout = QHBoxLayout()
        HBlayout.setAlignment(Qt.AlignLeft)
        HBlayout.addWidget(self.btnLoad)
 
        VBlayout.addLayout(HBlayout)
        self.viewer.fitInView()
 
    def fitPoints(self):
        self.viewer.fitInView()
 
 
if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    window = Window()
    window.setGeometry(500, 300, 800, 600)
    window.show()
    sys.exit(app.exec_())