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from random import random from time import time from PyQt5.QtCore import QPropertyAnimation, QObject, pyqtProperty, QEasingCurve,\ Qt, QRectF, pyqtSignal from PyQt5.QtGui import QColor, QPainterPath, QPainter from PyQt5.QtWidgets import QWidget __Author__ = """By: Irony QQ: 892768447 Email: 892768447@qq.com""" __Copyright__ = 'Copyright (c) 2018 Irony' __Version__ = 1.0 try : import pointtool # @UnusedImport @UnresolvedImport getDistance = pointtool.getDistance findClose = pointtool.findClose except : import math def getDistance(p1, p2): return math. pow (p1.x - p2.x, 2 ) + math. pow (p1.y - p2.y, 2 ) def findClose(points): plen = len (points) for i in range (plen): closest = [ None , None , None , None , None ] p1 = points[i] for j in range (plen): p2 = points[j] dte1 = getDistance(p1, p2) if p1 ! = p2: placed = False for k in range ( 5 ): if not placed: if not closest[k]: closest[k] = p2 placed = True for k in range ( 5 ): if not placed: if dte1 < getDistance(p1, closest[k]): closest[k] = p2 placed = True p1.closest = closest class Target: def __init__( self , x, y): self .x = x self .y = y class Point(QObject): valueChanged = pyqtSignal() def __init__( self , x, ox, y, oy, * args, * * kwargs): super (Point, self ).__init__( * args, * * kwargs) self .__x = x self ._x = x self .originX = ox self ._y = y self .__y = y self .originY = oy # 5个闭合点 self .closest = [ 0 , 0 , 0 , 0 , 0 ] # 圆半径 self .radius = 2 + random() * 2 # 连线颜色 self .lineColor = QColor( 156 , 217 , 249 ) # 圆颜色 self .circleColor = QColor( 156 , 217 , 249 ) def initAnimation( self ): # 属性动画 if not hasattr ( self , 'xanimation' ): self .xanimation = QPropertyAnimation( self , b 'x' , self , valueChanged = self .valueChanged.emit, easingCurve = QEasingCurve.InOutSine) self .yanimation = QPropertyAnimation( self , b 'y' , self , valueChanged = self .valueChanged.emit, easingCurve = QEasingCurve.InOutSine, finished = self .updateAnimation) self .updateAnimation() def updateAnimation( self ): self .xanimation.stop() self .yanimation.stop() duration = ( 1 + random()) * 1000 self .xanimation.setDuration(duration) self .yanimation.setDuration(duration) self .xanimation.setStartValue( self .__x) self .xanimation.setEndValue( self .originX - 50 + random() * 100 ) self .yanimation.setStartValue( self .__y) self .yanimation.setEndValue( self .originY - 50 + random() * 100 ) self .xanimation.start() self .yanimation.start() @pyqtProperty ( float ) def x( self ): return self ._x @x .setter def x( self , x): self ._x = x @pyqtProperty ( float ) def y( self ): return self ._y @y .setter def y( self , y): self ._y = y class Window(QWidget): def __init__( self , * args, * * kwargs): super (Window, self ).__init__( * args, * * kwargs) self .setMouseTracking( True ) self .resize( 800 , 600 ) self .points = [] self .target = Target( self .width() / 2 , self .height() / 2 ) self .initPoints() def paintEvent( self , event): super (Window, self ).paintEvent(event) painter = QPainter() painter.begin( self ) painter.setRenderHint(QPainter.Antialiasing) painter.fillRect( self .rect(), Qt.black) self .animate(painter) painter.end() def mouseMoveEvent( self , event): super (Window, self ).mouseMoveEvent(event) # 鼠标移动时更新xy坐标 self .target.x = event.x() self .target.y = event.y() self .update() def initPoints( self ): t = time() self .points.clear() # 创建点 stepX = self .width() / 20 stepY = self .height() / 20 for x in range ( 0 , self .width(), int (stepX)): for y in range ( 0 , self .height(), int (stepY)): ox = x + random() * stepX oy = y + random() * stepY point = Point(ox, ox, oy, oy) point.valueChanged.connect( self .update) self .points.append(point) print (time() - t) t = time() # 每个点寻找5个闭合点 findClose( self .points) print (time() - t) def animate( self , painter): for p in self .points: # 检测点的范围 value = abs (getDistance( self .target, p)) if value < 4000 : # 其实就是修改颜色透明度 p.lineColor.setAlphaF( 0.3 ) p.circleColor.setAlphaF( 0.6 ) elif value < 20000 : p.lineColor.setAlphaF( 0.1 ) p.circleColor.setAlphaF( 0.3 ) elif value < 40000 : p.lineColor.setAlphaF( 0.02 ) p.circleColor.setAlphaF( 0.1 ) else : p.lineColor.setAlphaF( 0 ) p.circleColor.setAlphaF( 0 ) # 画线条 if p.lineColor.alpha(): for pc in p.closest: if not pc: continue path = QPainterPath() path.moveTo(p.x, p.y) path.lineTo(pc.x, pc.y) painter.save() painter.setPen(p.lineColor) painter.drawPath(path) painter.restore() # 画圆 painter.save() painter.setPen(Qt.NoPen) painter.setBrush(p.circleColor) painter.drawRoundedRect(QRectF( p.x - p.radius, p.y - p.radius, 2 * p.radius, 2 * p.radius), p.radius, p.radius) painter.restore() # 开启动画 p.initAnimation() if __name__ = = '__main__' : import sys import cgitb sys.excepthook = cgitb.enable( 1 , None , 5 , '') from PyQt5.QtWidgets import QApplication app = QApplication(sys.argv) w = Window() w.show() sys.exit(app.exec_()) |
运行结果如下:
以上就是利用PyQt5模拟实现网页鼠标移动特效的详细内容,更多关于PyQt5鼠标特效的资料请关注服务器之家其它相关文章!
原文链接:https://blog.csdn.net/Vertira/article/details/123555880