262 lines
8.7 KiB
Python
262 lines
8.7 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2019年3月19日
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@author: Irony
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@site: https://pyqt5.com https://github.com/892768447
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@email: 892768447@qq.com
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@file: CircleLine
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@description:
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"""
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from math import floor, pi, cos, sin
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from random import random, randint
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from time import time
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from PyQt5.QtCore import QTimer, Qt
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from PyQt5.QtGui import QColor, QPainter, QPainterPath, QPen
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from PyQt5.QtWidgets import QWidget
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__Author__ = 'Irony'
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__Copyright__ = 'Copyright (c) 2019'
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# 最小和最大半径、半径阈值和填充圆的百分比
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radMin = 10
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radMax = 80
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filledCircle = 30 # 填充圆的百分比
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concentricCircle = 60 # 同心圆百分比
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radThreshold = 25 # IFF special, over this radius concentric, otherwise filled
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# 最小和最大移动速度
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speedMin = 0.3
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speedMax = 0.6
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# 每个圆和模糊效果的最大透明度
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maxOpacity = 0.6
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colors = [
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QColor(52, 168, 83),
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QColor(117, 95, 147),
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QColor(199, 108, 23),
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QColor(194, 62, 55),
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QColor(0, 172, 212),
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QColor(120, 120, 120)
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]
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circleBorder = 10
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backgroundLine = colors[0]
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backgroundColor = QColor(38, 43, 46)
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backgroundMlt = 0.85
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lineBorder = 2.5
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# 最重要的是：包含它们的整个圆和数组的数目
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maxCircles = 8
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points = []
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# 实验变量
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circleExp = 1
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circleExpMax = 1.003
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circleExpMin = 0.997
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circleExpSp = 0.00004
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circlePulse = False
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# 生成随机整数 a<=x<=b
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def randint(a, b):
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return floor(random() * (b - a + 1) + a)
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# 生成随机小数
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def randRange(a, b):
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return random() * (b - a) + a
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# 生成接近a的随机小数
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def hyperRange(a, b):
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return random() * random() * random() * (b - a) + a
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class Circle:
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def __init__(self, background, width, height):
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self.background = background
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self.x = randRange(-width / 2, width / 2)
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self.y = randRange(-height / 2, height / 2)
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self.radius = hyperRange(radMin, radMax)
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self.filled = (False if randint(
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0, 100) > concentricCircle else 'full') if self.radius < radThreshold else (
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False if randint(0, 100) > concentricCircle else 'concentric')
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self.color = colors[randint(0, len(colors) - 1)]
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self.borderColor = colors[randint(0, len(colors) - 1)]
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self.opacity = 0.05
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self.speed = randRange(speedMin, speedMax) # * (radMin / self.radius)
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self.speedAngle = random() * 2 * pi
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self.speedx = cos(self.speedAngle) * self.speed
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self.speedy = sin(self.speedAngle) * self.speed
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spacex = abs((self.x - (-1 if self.speedx < 0 else 1) *
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(width / 2 + self.radius)) / self.speedx)
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spacey = abs((self.y - (-1 if self.speedy < 0 else 1) *
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(height / 2 + self.radius)) / self.speedy)
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self.ttl = min(spacex, spacey)
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class CircleLineWindow(QWidget):
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def __init__(self, *args, **kwargs):
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super(CircleLineWindow, self).__init__(*args, **kwargs)
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geometry = QApplication.instance().desktop().availableGeometry()
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self.screenWidth = geometry.width()
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self.screenHeight = geometry.height()
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self._canDraw = True
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self._firstDraw = True
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self._timer = QTimer(self, timeout=self.update)
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def init(self):
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points.clear()
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# 链接的最小距离
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self.linkDist = min(self.screenWidth, self.screenHeight) / 2.4
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# 初始化点
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for _ in range(maxCircles * 3):
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points.append(Circle('', self.screenWidth, self.screenHeight))
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self.update()
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def resizeEvent(self, event):
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super(CircleLineWindow, self).resizeEvent(event)
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self.init()
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def showEvent(self, event):
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super(CircleLineWindow, self).showEvent(event)
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self._canDraw = True
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def hideEvent(self, event):
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super(CircleLineWindow, self).hideEvent(event)
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# 窗口最小化要停止绘制, 减少cpu占用
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self._canDraw = False
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def paintEvent(self, event):
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super(CircleLineWindow, self).paintEvent(event)
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if not self._canDraw:
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return
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painter = QPainter(self)
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painter.setRenderHint(QPainter.Antialiasing)
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painter.setRenderHint(QPainter.SmoothPixmapTransform)
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painter.save()
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painter.fillRect(self.rect(), backgroundColor)
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painter.restore()
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self.draw(painter)
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def draw(self, painter):
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if circlePulse:
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if circleExp < circleExpMin or circleExp > circleExpMax:
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circleExpSp *= -1
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circleExp += circleExpSp
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painter.translate(self.screenWidth / 2, self.screenHeight / 2)
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if self._firstDraw:
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t = time()
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self.renderPoints(painter, points)
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if self._firstDraw:
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self._firstDraw = False
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# 此处有个比例关系用于设置timer的时间，如果初始窗口很小，没有比例会导致动画很快
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t = (time() - t) * 1000
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# 比例最大不能超过1920/800
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t = int(min(2.4, self.screenHeight / self.height()) * t) - 1
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print('start timer(%d msec)' % t)
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# 开启定时器
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self._timer.start(t)
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def drawCircle(self, painter, circle):
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# circle.radius *= circleExp
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if circle.background:
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circle.radius *= circleExp
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else:
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circle.radius /= circleExp
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radius = circle.radius
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r = radius * circleExp
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# 边框颜色设置透明度
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c = QColor(circle.borderColor)
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c.setAlphaF(circle.opacity)
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painter.save()
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if circle.filled == 'full':
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# 设置背景刷
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painter.setBrush(c)
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painter.setPen(Qt.NoPen)
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else:
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# 设置画笔
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painter.setPen(
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QPen(c, max(1, circleBorder * (radMin - circle.radius) / (radMin - radMax))))
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# 画实心圆或者圆圈
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painter.drawEllipse(circle.x - r, circle.y - r, 2 * r, 2 * r)
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painter.restore()
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if circle.filled == 'concentric':
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r = radius / 2
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# 画圆圈
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painter.save()
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painter.setBrush(Qt.NoBrush)
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painter.setPen(
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QPen(c, max(1, circleBorder * (radMin - circle.radius) / (radMin - radMax))))
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painter.drawEllipse(circle.x - r, circle.y - r, 2 * r, 2 * r)
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painter.restore()
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circle.x += circle.speedx
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circle.y += circle.speedy
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if (circle.opacity < maxOpacity):
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circle.opacity += 0.01
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circle.ttl -= 1
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def renderPoints(self, painter, circles):
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for i, circle in enumerate(circles):
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if circle.ttl < -20:
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# 重新初始化一个
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circle = Circle('', self.screenWidth, self.screenHeight)
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circles[i] = circle
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self.drawCircle(painter, circle)
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circles_len = len(circles)
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for i in range(circles_len - 1):
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for j in range(i + 1, circles_len):
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deltax = circles[i].x - circles[j].x
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deltay = circles[i].y - circles[j].y
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dist = pow(pow(deltax, 2) + pow(deltay, 2), 0.5)
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# if the circles are overlapping, no laser connecting them
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if dist <= circles[i].radius + circles[j].radius:
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continue
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# otherwise we connect them only if the dist is < linkDist
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if dist < self.linkDist:
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xi = (1 if circles[i].x < circles[j].x else -
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1) * abs(circles[i].radius * deltax / dist)
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yi = (1 if circles[i].y < circles[j].y else -
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1) * abs(circles[i].radius * deltay / dist)
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xj = (-1 if circles[i].x < circles[j].x else 1) * \
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abs(circles[j].radius * deltax / dist)
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yj = (-1 if circles[i].y < circles[j].y else 1) * \
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abs(circles[j].radius * deltay / dist)
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path = QPainterPath()
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path.moveTo(circles[i].x + xi, circles[i].y + yi)
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path.lineTo(circles[j].x + xj, circles[j].y + yj)
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# samecolor = circles[i].color == circles[j].color
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c = QColor(circles[i].borderColor)
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c.setAlphaF(min(circles[i].opacity, circles[j].opacity)
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* ((self.linkDist - dist) / self.linkDist))
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painter.setPen(QPen(c, (
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lineBorder * backgroundMlt if circles[i].background else lineBorder) * (
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(self.linkDist - dist) / self.linkDist)))
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painter.drawPath(path)
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if __name__ == '__main__':
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import sys
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from PyQt5.QtWidgets import QApplication
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app = QApplication(sys.argv)
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w = CircleLineWindow()
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w.resize(800, 600)
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w.show()
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sys.exit(app.exec_())
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