lidarShow-master（地面站）
作者：互联网
项目使用qt5.4编写，我使用5.2打开，遇到很多错误，需要把ui**.h文件，user文件都删除，编码全部用notepad更改成utf-8格式才能正常构件
数据解析
将接受到的字节码进行缓存；使用静态局部变量；
接收到一个完整的数据帧后，对其进行处理
判断数据帧的类型，判断是姿态信息还是激光雷达信息
使用信号将数据发送给主线程用于显示
将子线程（用于串口数据收发和数据解析）发出的信号与主线程的槽函数进行连接，在主线程对数据进行处理；
绘制雷达图
void radiaTrueShow::doRadar()
{
int i;
pix->fill(Qt::white);
QPainter painter(pix);
QPainterPath pathTemp;
painter.translate(ui->widget->rect().center().x(),ui->widget->rect().center().y()); //以矩形的中心为原点
QRect rect;
int lenght = ui->widget->rect().height()/20;
QBrush brush(Qt::green, Qt::Dense2Pattern); //画刷可以设置颜色和填充模式
painter.setBrush(brush);
painter.drawEllipse(-(lenght*10),-(lenght*10),lenght*20,lenght*20);
painter.setPen(Qt::white);
painter.setBrush(Qt::NoBrush);
for(i = 0;i<10;i++)//绘制同心圆
{
painter.drawEllipse(-(lenght*i),-(lenght*i),(lenght*i)*2,(lenght*i)*2);//绘制椭圆、圆(x,y,w,h),,,(x,y)为左上角坐标，w为长，h为宽
}
//绘制辐射线
painter.translate(-ui->widget->rect().center().x(),-ui->widget->rect().center().y());//变回原来的零点
painter.setPen(Qt::red);
painter.setBrush(Qt::NoBrush);
pathTemp.moveTo(ui->widget->rect().center());
pathTemp.lineTo(ui->widget->rect().center().x()+200,ui->widget->rect().center().y()+200);
painter.drawPath(pathTemp);
pathTemp.moveTo(ui->widget->rect().center());
pathTemp.lineTo(ui->widget->rect().center().x()-200,ui->widget->rect().center().y()+200);
painter.drawPath(pathTemp);
painter.setPen(Qt::red);
painter.drawText(20, 0, 100, 20,Qt::AlignHCenter | Qt::AlignTop, "雷达显示图");
//painter.drawText(x, y, width, height, alignment, text);其中(x,y,width,height)所确定的矩形，alignment确定文字在矩形中的位置。
painter.translate(ui->widget->rect().center().x(),ui->widget->rect().center().y());//变回图形中心
painter.drawText(lenght*0.707, lenght*0.707, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "1m");
painter.drawText(lenght*0.707*2, lenght*0.707*2, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "2m");
painter.drawText(lenght*0.707*3, lenght*0.707*3, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "3m");
painter.drawText(lenght*0.707*4, lenght*0.707*4, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "4m");
painter.drawText(lenght*0.707*5, lenght*0.707*5, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "5m");
painter.drawText(lenght*0.707*6, lenght*0.707*6, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "6m");
painter.drawText(lenght*0.707*7, lenght*0.707*7, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "7m");
painter.drawText(lenght*0.707*8, lenght*0.707*8, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "8m");
painter.drawText(lenght*0.707*9, lenght*0.707*9, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "9m");
painter.drawText(lenght*0.707*10, lenght*0.707*10, 20, 20,Qt::AlignHCenter | Qt::AlignTop, "10m");
if(init_ok==0) {//少去重复计算三角函数
init_ok=1;
painter.setPen(QPen(Qt::black, 2));
painter.setBrush(Qt::NoBrush);
for (int i=0; i<256; i++)
{//像素应该是向右向下为正，目前中心已经搞到了图形的中心, 这里激光雷达角度是从-y轴开始，顺时针转
pointf[i]->setX(0.0264*URGData[i]*qSin((1.40625*i)/360*2*3.14));
pointf[i]->setY(-0.0264*URGData[i]*qCos((1.40625*i)/360*2*3.14));
if(test)
{
pointf[0]->setX(0.0264*1000);//横坐标1 m 的位置
pointf[0]->setY(0);
}
painter.drawPoints(pointf[i],1);
}
painter.setPen(QPen(Qt::red, 3)); //目标yaw方向标红
painter.setBrush(Qt::VerPattern);
painter.drawLine(0,0, -80*qCos((draw_yaw-now_yaw_here+90)/360*2*3.14), -80*qSin((draw_yaw-now_yaw_here+90)/360*2*3.14));
painter.setPen(QPen(Qt::black, 3)); //目标roll方向标黑(目标命令左负右正)
painter.setBrush(Qt::VerPattern);
painter.drawLine(0,0,26.4*draw_roll, 0);
painter.setPen(QPen(Qt::blue, 3)); //目标pitch方向标蓝(目标命令前正后负)
painter.setBrush(Qt::NoBrush);
painter.drawLine(0,0,0, -26.4*draw_pitch);
update();
}
else {
painter.setPen(QPen(Qt::black, 2));
painter.setBrush(Qt::NoBrush);
if(receiveOk==1)
{
for(int i=0;i<256;i++)
{
// pointf[receiveNum[i]]->setX(0.0264*URGData[receiveNum[i]]*qCos((0.625+1.25*receiveNum[i]-45)/360*2*3.14));
// pointf[receiveNum[i]]->setY(-0.0264*URGData[receiveNum[i]]*qSin((0.625+1.25*receiveNum[i]-45)/360*2*3.14));
pointf[i]->setX(0.0264*URGData[i]*qSin((1.40625*i)/360*2*3.14));
pointf[i]->setY(-0.0264*URGData[i]*qCos((1.40625*i)/360*2*3.14));
}
receiveOk=0;
if(test)
{
pointf[0]->setX(0.0264*1000);
pointf[0]->setY(0);
}
}
for(int j=0;j<256;j++)
{
painter.drawPoints(pointf[j],1);
}
painter.setPen(QPen(Qt::red, 3)); //目标方向标红
painter.setBrush(Qt::VerPattern);
painter.drawLine(0,0, -80*qCos((draw_yaw-now_yaw_here+90)/360*2*3.14), -80*qSin((draw_yaw-now_yaw_here+90)/360*2*3.14));
painter.setPen(QPen(Qt::black, 3)); //目标roll方向标黑(目标命令左负右正)
painter.setBrush(Qt::VerPattern);
painter.drawLine(0,0,26.4*draw_roll, 0);
painter.setPen(QPen(Qt::blue, 3)); //目标pitch方向标蓝(目标命令前正后负)
painter.setBrush(Qt::NoBrush);
painter.drawLine(0,0,0,-26.4*draw_pitch);
update();
}
}
绘制航向仪表盘
全部手动绘制，作为自定义控件，在主窗口添加基础控件后提升为自定义控件；
绘制表盘上的字母
绘制中间的刻度尺
绘制波形曲线
使用QcustomPlot自定义控件；提升控件；
将数据存储到Excel表格
标签：20,Qt,lenght,地面站,master,rect,0.707,lidarShow,painter 来源： https://www.cnblogs.com/tangyuanjie/p/14304636.html