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# 定义创建按钮的函数
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import cv2
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# 定义类
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class drawButton:
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# 定义类属性
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w = 200
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h = 60
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angerLine = 15 # 角点线段长度
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thick = 3 # 角点线段厚度
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# 矩形框颜色
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colorBG = (255,255,0) # 底色
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colorBL = (255,0,255) # 边界
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colorBA = (0,255,255) # 角点边线颜色
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# 初始化
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def __init__(self, classnames:list):
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# 分配属性
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self.classnames = classnames
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self.len = len(classnames)
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# 美化角点
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def drawAnger(self, img, x, y):
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cv2.line(img, (x,y), (x,y+self.angerLine), self.colorBA, self.thick)
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cv2.line(img, (x,y), (x+self.angerLine,y), self.colorBA, self.thick)
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cv2.line(img, (x+self.w,y), (x+self.w,y+self.angerLine), self.colorBA, self.thick)
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cv2.line(img, (x+self.w,y), (x+self.w-self.angerLine,y), self.colorBA, self.thick)
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cv2.line(img, (x,y+self.h), (x,y+self.h-self.angerLine), self.colorBA, self.thick)
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cv2.line(img, (x,y+self.h), (x+self.angerLine,y+self.h), self.colorBA, self.thick)
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cv2.line(img, (x+self.w,y+self.h), (x+self.w,y+self.h-self.angerLine), self.colorBA, self.thick)
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cv2.line(img, (x+self.w,y+self.h), (x+self.w-self.angerLine,y+self.h), self.colorBA, self.thick)
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# 定义绘图方法
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def drawRec_alone(self, img, x, y, name):
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# 透明矩形参数设置
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alphaReserve = 0.5 # 透明度
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BChannel, GChannel, RChannel = self.colorBG # 设置矩形颜色
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yMin, yMax = y, y+self.h # 矩形框的y坐标范围
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xMin, xMax = x, x+self.w # 矩形框的y坐标范围
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# 绘制透明矩形
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img[yMin:yMax, xMin:xMax, 0] = img[yMin:yMax, xMin:xMax, 0] * alphaReserve + BChannel * (1 - alphaReserve)
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img[yMin:yMax, xMin:xMax, 1] = img[yMin:yMax, xMin:xMax, 1] * alphaReserve + GChannel * (1 - alphaReserve)
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img[yMin:yMax, xMin:xMax, 2] = img[yMin:yMax, xMin:xMax, 2] * alphaReserve + RChannel * (1 - alphaReserve)
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# 矩形框边界
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cv2.rectangle(img, (x,y), (x+self.w, y+self.h), self.colorBL, 2)
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# 美化角点
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self.drawAnger(img, x, y)
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# 显示文本
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cv2.putText(img, name, (x+20, y+40), cv2.FONT_HERSHEY_COMPLEX, 1.3, (255,255,255), 3)
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# 绘制多个按钮框，保存每个按钮的左上坐标
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def drawRec_many(self, img):
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self.recList = [] # 存放每个矩形框的左上角坐标
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# 每个分类绘制一个矩形框
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for i in range(self.len):
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# 分类名
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name = self.classnames[i]
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# 每个矩形框的左上角坐标
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recx = 10
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recy = 100*i+50
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# 保存在列表中
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self.recList.append([[recx, recy], # 左上角
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[recx+self.w, recy], # 右上角
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[recx+self.w, recy+self.h], # 右下角
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[recx, recy+self.h] # 左下角
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])
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# 每一个分类画一个矩形框
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# 10代表x位置，y=110*i+50，矩形框之间纵向间隔50
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self.drawRec_alone(img, recx, recy, name)
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# filepath = 'C:\\GameDownload\\Deep Learning\\kings.jpg'
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# img = cv2.imread(filepath)
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# img = cv2.resize(img, (1280,720))
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# draw = drawButton(['person', 'bus', 'car', 'mot', 'tree'])
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# draw.drawRec_many(img)
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# print(draw.recList)
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# cv2.imshow('img', img)
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# cv2.waitKey(0)
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# cv2.destroyAllWindows()
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