pyqt5绘制坐标系
def paintEvent(self, event):
painter = QPainter()
painter.begin(self)
# 绘制图像
image = self.pix
if image.width()>0:
rect = QRect(0, 0, image.width(), image.height())
painter.drawImage(rect, image)
if self.is_draw_origin_point:
point_pen = QPen(QColor(220,0,0),10)
painter.setPen(point_pen)
painter.drawPoint(self.origin_x,self.origin_y)
if self.is_draw_vectorX_point:
point_pen_x = QPen(self.x_color,10)
painter.setPen(point_pen_x)
painter.drawPoint(self.vectorX_x,self.vectorX_y)
if self.is_draw_vectorY_point:
point_pen = QPen(self.y_color,10)
painter.setPen(point_pen)
painter.drawPoint(self.vectorY_x,self.vectorY_y)
if self.is_draw_axis:
point_pen_x = QPen(self.x_color,5)
painter.setPen(point_pen_x)
painter.drawLine(self.origin_x,self.origin_y,self.vectorX_x,self.vectorX_y)
painter.drawLine(self.vectorX_x-10,self.vectorX_y-10,self.vectorX_x,self.vectorX_y)
painter.drawLine(self.vectorX_x-10,self.vectorX_y+10,self.vectorX_x,self.vectorX_y)
point_pen_y = QPen(self.y_color,5)
painter.setPen(point_pen_y)
painter.drawLine(self.origin_x,self.origin_y,self.vectorY_x,self.vectorY_y)
painter.drawLine(self.vectorY_x-10,self.vectorY_y-10,self.vectorY_x,self.vectorY_y)
painter.drawLine(self.vectorY_x+10,self.vectorY_y-10,self.vectorY_x,self.vectorY_y)
#######################
标签：vectorX,vectorY,point,self,pyqt5,绘制,坐标系,painter,10 From： https://www.cnblogs.com/herd/p/16923151.html